JPH0360812A - Device for controlling meandering of rolled stock - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention [Object of the Invention] (Industrial Application Field) The present invention generally relates to a meandering control device for a rolled material, and is particularly suitable for controlling the meandering of a rolled material rolled in a tandem rolling mill. This invention relates to an apparatus for meandering rolled material.

(Prior Art) FIG. 3 is a block diagram showing a conventional meandering control device for rolled material.

In FIG. 3, a rolling mill 102 receives a given rolled material 10.
Rolling is performed according to the amount. An operator side tension detector 103 and a drive side tension detector 104 installed on the exit side of the rolling mill 102 detect the tension on both sides of the rolled material 101 rolled by the rolling mill 102 and serve as a subtractor. Output to 111. That is, the operator side tension detector 103 detects the tension on the operator side of the rolled material 101 and outputs a detection signal 103A.

On the other hand, the drive side tension detector 104
Detects the tension on the drive side of 01 and outputs the detection signal 1.
Outputs 04A.

The subtracter 111 reads the detection signal 103A and the detection signal 104A, and calculates a difference value 103A between the rain detection signals.
-104A is calculated, and the tension bias 111A is determined and output.

The tension deviation limit device 112 receives the tension deviation signal 111A output from the compensator 111, performs dead band processing, and outputs a tension deviation 112A after the dead band processing. Here, if the tension deviation signal 112A after the tension deviation signal 111A is subjected to ΔTi1 dead band processing is ΔT, ΔT is given by the formula described below.

However, L, TUI,: Dead band upper limit value Tl, l: Dead band lower limit value Proportional integrator: 13 receives the tension deviation signal 112A output from the tension deviation limit device 112, performs proportional integration processing, and then outputs the signal 113A. Output. This signal 113A
is a rolling mill 102 for correcting meandering of rolled material]01;
The rolling position leveling amount signal (that is, the deviation amount between the operator side rolling position reference value 117A and the drive side rolling position reference value 118A of the rolling mill 1.02) is obtained.

The lower limit leveling amount upper and lower limit device 114 receives the end position leveling amount signal 113A output from the proportional integrator 113, limits it to the upper and lower limits, and outputs the lower limit leveling amount signal 114A.

The above-mentioned rolling position leveling amount signal 113A has a mechanical upper limit value and a lower limit value for the rolling position leveling amount of the rolling mill 102, so the rolling position leveling amount upper and lower limit limit device 114 limits the upper and lower limits. There is a need.

The subtractor 115 outputs the upper and lower limit lower limit position leveling amount signal 114A output from the upper and lower limit device 114 for the lower limit position leveling amount, and the operator side lower position reference value output from the operator side lower position reference value setting device 117. 117A, and by subtracting the signal 114A from this reference value, an operator side pressure position reference value 115A after leveling amount correction is output.

The adder 116 outputs the lower limit position leveling amount signal 114A outputted from the upper and lower limit device 114 for lower limit position leveling, and the drive side lower position reference value output from the drive side lower position reference value setting device 118. By adding 118A, leveling children's sleeves positive rear drive side pressure position reference ft1tl1
Outputs 6A.

The operator side side pressure down position control device 109 receives the leveling amount corrected operator side pressure down position reference value 115A output from the subtractor 115, and calculates the reference value 115A.
A, the operator side rolling position of the rolling mill 102 is controlled by outputting to the operator side rolling drive device 107. An operator side rolling load subdetector 105 that is in contact with the rolling mill 102 is attached to the operator side bending drive device 107 .

In the same manner as described above, the drive side side reduction position control device 110 also receives the leveling amount corrected drive side reduction position reference value 116A output from the adder 116, and controls the drive side reduction position control device 1 according to the reference value 116A.
08, the drive side rolling position of the rolling mill 102 is controlled.

A drive side rolling 6:1 double detector 106 that is in contact with the rolling mill 102 is attached to the drive side rolling down drive device 108 .

In the meandering control device for a rolling mill having the above configuration, the operator side tension detection signal 103A output from the operator side tension detector 103 is greater than the drive side tension detection signal 104A output from the drive side tension detector 104. is also large, it is determined that the elongation of the rolled material 101 on the operator side of the rolling mill 102 is smaller than the elongation of the rolled material 101 on the drive side of the rolling mill 102 (that is, the elongation of the rolled material 101 on the operator side of the rolling mill 102 ). Then, the operator side rolling position reference value 115A after leveling amount correction of the rolling mill 102 is decreased (
That is, by tightening the roll on the operator side of the rolling mill 102, the elongation on the operator side of the rolled material 101 becomes equal to the elongation on the drive side (i.e.,
The operator side tension detection signal 103A and the drive side tension detection signal 104A become equal, and the rolling mill 1
The elongation of the rolled material 101 on the operator side is increased until the meandering amount of 01 becomes O). This eliminates the meandering of the rolled material 101 described above.

(Problems to be Solved by the Invention) By the way, in the conventional rolling material meandering control device having the above-described configuration, the rolling material 10 on the exit side of the rolling mill 102
The deviation between the tension on the operator side of No. 1 and the tension on the drive side of the rolled material 101 (i.e., tension deviation) is 0.
The difference between the tension on the operator side of the rolled material 101 and the tension on the drive side of the rolled material 101 is such that (
Proportional-integral control was performed in which the ilIli difference No. 18 difference part No. 8 tension deviation signal) was set to -manpower, and the leveling amount of the rolling mill 102 was set to one output. Therefore, until the tension deviation reaches O, the leveling amount of the rolling mill 102 increases until it reaches the mechanical upper limit of the rolling mill 102 itself. In this way, if the leveling amount of the rolling mill 102 increases, the rolling mill 1
Since the difference value between the operator side rolling load of 02 and the drive side rolling Qm also increases, the rolled material 1
There was a problem that it adversely affected the plate thickness accuracy, shape, etc. of 01.

That is, in the conventional rolling material meandering control device, only the deviation signal (i.e., tension deviation signal) between the tension detection signal No. 13 on the operator side of the rolled material 101 and the tension detection signal on the drive side is manually operated. , since it is a proportional-integral control system of single force-output with the leveling amount of the rolling mill 102 as the control output, there is a problem that the rolling load difference between the operator side and the drive side of the rolling mill 102 cannot be controlled. There is.

Therefore, the present invention has been made to solve the above-mentioned problems, and its purpose is to prevent the operator of the rolling mill from maintaining tension even if the tension layer 1 between the operator side and the drive side of the rolled material continues. In order to prevent the differential value of the rolling load between the side side and the drive side from becoming excessive, we have developed a meandering control device for rolled material that can achieve optimal meandering control within a range that does not adversely affect the plate thickness accuracy and shape of the rolled material. It is about providing.

[Structure of the invention]

(Means for Solving the Problems) In order to achieve the above object, a meandering control device for a rolled material according to the present invention provides a meandering control device for a rolled material according to the present invention, which uses a tension detection signal on one side of the rolling direction (A) rolled in a rolling mill and a tension deviation signal output means that receives a tension detection signal on the other side in the moving direction of the material, calculates and outputs a deviation between these tension detection signals; and a rolling load detection signal on one side in the rolling material moving direction of the rolling mill; A rolling Q serious difference signal output means receives the rolling load detection signal on the other side of the rolling material moving direction of the rolling mill, and calculates and outputs the deviation between these rolling F; quadruple detection signals; Based on these two deviation signals, the reduction leveling amount for controlling the meandering of the rolled material within a range that does not affect the thickness of the rolled material is determined, and the rolling mill is adjusted based on this determined value. The present invention is configured to include an adjusting means for adjusting the leveling amount.

Further, the adjusting means receives the tension deviation signal outputted from the tension deviation f≦ number outputting means and the rolling load deviation signal outputted from the rolling load deviation signal outputting means, and adjusts the adjustment means based on these width difference signals. The present invention is configured with a fuzzy control means that determines the leveling amount by using a fuzzy control method and adjusts the leveling amount of the rolling mill using the determined value.

(Function) As is already clear from the above, the reason why the conventional rolling material meandering control device had a negative effect on the plate thickness accuracy and shape of the rolled material is that The reason is that a one-person power-output proportional-integral control system was constructed to manipulate the leveling amount of the rolling mill with the sole purpose of reducing the side tension difference to zero.

Therefore, in the present invention, when there is a deviation in the tension between the operator side and the drive side of the rolled material, we respond to the deviation in the rolling load between the operator side and the drive side of the rolling mill when the tension deviation occurs. The meandering control of the rolled material was determined by determining the leveling amount by using a fuzzy control method, and by directly controlling the position control system using the leveling amount determined.

That is, (a) If the tension on the operator side of the rolled material is greater than the tension on the drive side and the rolling load on the operator side of the rolling mill is greater than the pre-rolling load on the drive side,
Using a fuzzy control method, the rolling leveling amount is set so as to slightly tighten the rolling position on the operator side of the rolling mill.

(b) If the tension on the operator side of the rolled material is greater than the tension on the drive side and the rolling load on the drive side of the rolling mill is greater than the rolling load on the operator side,
Using a fuzzy control method, a rolling leveling effect is set that greatly tightens the rolling α position on the operator side of the rolling mill.

(c) If the tension on the drive side of the rolled material is greater than the tension on the operator side and the rolling load on the operator side of the rolling mill is greater than the rolling load on the drive side,
Using a fuzzy control method, a rolling leveling amount is set so as to greatly tighten the rolling position on the drive side of the rolling mill.

(d) If the tension on the drive side of the rolled material is greater than the tension on the operator side and the rolling load on the drive side of the rolling mill is greater than the rolling load on the operator side,
Using a fuzzy control method, the rolling leveling amount is set to slightly tighten the rolling position on the drive side of the rolling mill.

As is clear from the above content, optimal rolling is achieved by using a wide range of fuzzy control based on the tension deviation between the drive side and operator side of the rolled material and the rolling load deviation between the drive side and operator side of the rolling mill. Since the amount of leveling is determined, it is possible to realize a meandering control device for a rolled material that can optimally control the meandering of a rolled material without adversely affecting plate thickness accuracy and shape.

(Example) An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of a rolling side meandering control device according to an embodiment of the present invention. The meandering control device for a rolled material according to an embodiment of the present invention illustrated in FIG. 1 is similar to the conventional meandering control device for a rolled material illustrated in FIG. It is a device used to control the

In FIG. 1, a rolling mill 2 receives a given amount of material to be rolled and rolls it. An operator side tension detector 3 and a drive side tension detector 4 installed on the exit side of the rolling mill 2 detect the tension on both sides of the rolled material 1 rolled by the rolling mill 2 and perform a subtracter. Output to 11. That is, the operator side tension detector 3 detects the tension on the operator side of the rolled material 1 and outputs a detection signal 3A.

On the other hand, the drive side tension detector 4 is 1 Ohen + 11
Detects the tension on the drive side of the
Output.

The subtracter 11 has the detection f≦No. 3A and the first;
4A, calculates the difference value 3A4A between the rain detection signals, and calculates and outputs the tension deviation signal 11A.

The tension deviation limit device 12 receives the tension deviation signal 11A output from the multiplier 11, processes the tension deviation signal 11A, and outputs the tension deviation signal 12A after dead band processing. Car mlc+ No. 11A ΔTi1
If the tension (-difference signal 12A) after dead band processing is ΔT, ΔT is given by the above equation (1).

The operator side rolling load detector 5 detects the rolling load on the operator side in the axis h° direction of the rolling rollers constituting the rolling mill 2 and outputs a detection signal 5A. The container 5 is disposed on the operator side lowering drive device 7. Similarly, the drive side rolling load detector 6 detects the rolling load on the drive side in the axial direction of the rolling rollers constituting the rolling mill 2 and outputs a detection signal 6A. The container 6 is disposed on a drive side rolling down drive device 8.

The subtractor 13 calculates the operator side Enobu load detection signal 5A output from the operator side rolling filler weight detector 5 and the drive side rolling load output from the drive side 1-roll load detector 6. It reads the detection signal 6A, calculates a difference value 5A-6A between both detection signals 18, and outputs a rolling load deviation signal 13A.

The rolling load deviation limiter 14 receives the rolling load deviation signal 13A output from the subtracter 3, performs dead band processing, and outputs a rolling load deviation signal 14A after dead band processing.

The fuzzy control device 15 includes the rolling load deviation limit device 1
4 and the tension width difference signal 12A after dead band processing output from the tension deviation limit/sort device 12.

Based on 12A, a rolling leveling amount signal 15A of the rolling mill 2 is calculated using a fuzzy inference method. Note that both signals 14A are generated by the fuzzy control device 15.

The fuzzy inference method used to calculate the rolling leveling amount 15A of the rolling mill 2 based on 12A will be described later. Note that the rolling leveling amount signal 15A output from the fuzzy control device 15 is the rolling leveling amount of the rolling mill 2 for correcting the meandering of the rolled material 1 (that is, the rolling mill 2 operator side rolling position reference value 17A and the drive (deviation amount from the side pressure position reference value 18A). The lowering position leveling amount upper limit device 16 is as follows:
In response to the head signal 15A output from the fuzzy inference device 15, the upper F limit is applied, and a lower position leveling amount signal 16A with the upper F limit is output. There is a mechanical upper limit value and a lower limit value for the rolling position leveling amount of the rolling mill 2.
In order to do this, the roll-down position leveling amount signal 15A output from the fuzzy inference device 15 needs to be limited to upper and lower limits by the roll-down position leveling amount upper and lower limit device 16.

One subtractor receives the leveling amount signal 16A at the position α outputted from the upper and lower limit device 16 for the leveling amount at the lower position.
and the operator side pressure down position reference value 17A outputted from the operator side pressure down position reference value setting device 17, and calculate the difference value 17A-16A between both signals, and set the operator side pressure down position base 1 after leveling amount correction. ．． [t
Find and output fl19A.

Similarly, the adder 20 receives the lowering device leveling amount signal 16A outputted from the lowering position leveling amount upper/lower limit device 16 and the drive side pressure position base 1 (i!! Press down position reference value 1
Read 8A and add both No. 16 (16A + 18A)
L. After leveling amount correction, the drive side lowering position reference value 2OA is determined and output.

The operator side rolling position control device 9 receives the leveling amount corrected operator side rolling position reference value 19A output from the calculator 19, and outputs it to the operator side rolling drive device 7 according to the reference value 19A, thereby controlling rolling. Controls the position of operator side pressure down of machine 2.

Similarly, the drive side lowering position control device 10 receives the leveling amount corrected drive side lowering position reference value 2OA output from the adder 20 and outputs it to the drive side lowering drive device 8 in accordance with the normal reference value 2OA. The drive side rolling position of the rolling mill 2 is controlled by this.

Next, in the above configuration, the fuzzy control device 15 receives the rolling Qm deviation signal 14A after dead band processing output from the rolling load deviation limit device 14 and the tension deviation after dead band processing output from the tension deviation limit device 12. A fuzzy control method for calculating the rolling reduction leveling ff1l5A of the rolling mill 2 based on the signals 14A and 12A in response to the signal 12A will be described.

FIG. 2 shows the fuzzy control rules and membership functions applied to this fuzzy control. Reference numerals All, A12. A21. A22゜A31. A32. A
41. A42. Bl, B2°B3. B4 represents the membership function, and the symbols R1, R2, R3, R
4 represents fuzzy control rules. In this fuzzy control, an inference method using the min arithmetic method is applied. Here, the inputs (premises) for the inference are the tension deviation of 12A and the rolling GJ weight deviation of 14A, and the output (conclusion) is the rolling mill leveling ffi 15A, and the manual labor (previous Wl
) and the output (conclusion) are fuzzy control rules R1, R2, R3, and R4.

(Premise) Here, it is assumed that ΔT-ΔT1 and Δp-ΔP1.

(Fuzzy control rule) R1: If ΔT-All and ΔP-AI2, then ΔL-B
It is l.

R2: If △T-A21 and △P-A22, then △L-8
It is 2.

R3: If ΔT-A31 and ΔP 薯A32, then ΔL-B
It is 3.

R4: If △T-A41 and △P-A42, then △L-B
It is 4.

(Conclusion) Therefore, ΔL−ΔL1 is obtained.

However, A], 1. A12 A21. A22. A31゜A32
．． A41. A42. Bl, B2. B3゜B4: Membership functions R1, R2, R3, R4: Fuzzy control rules ΔT, ΔT
1: Tension deviation signal 12A ΔP, ΔP1: Rolling load deviation signal 14A ΔL, ΔL1:
Roll down leveling amount signal 15A Next, the above-mentioned fuzzy control rule and membership function will be explained.

(B) Fuzzy control rule R1 Membership function All is the drive side tension detection signal 3A detected by the operator side tension detector 3 and the drive side tension detection signal 4A detected by the drive side tension detector 4. Indicates a greater degree. The horizontal axis is the tension deviation signal 11 (from the operator side tension detection signal 3A to the drive side tension detection f6
4A), and the vertical axis represents the degree of conformity.

The membership function A12 is either the operator side rolling load detection signal 5A detected by the operator side rolling load detector 5 or the drive side rolling load detector 6.
When the drive side rolling load detection signal 6A is larger than the drive side rolling load detection signal 6A detected by , it indicates the degree to which the operator side rolling load can be eaten. The horizontal axis is the rolling deviation signal 13
A (a value obtained by subtracting the drive side rolling Gj weight detection signal 6A from the operator side rolling direction weight detection signal 5A), and the vertical axis shows the degree of conformity.

The membership function B1 is a rolling level f that slightly tightens the rolling position on the operator side of the rolling mill 2.
This is a membership function for setting f1l5A.

Compare the goodness of fit of membership function All to a certain tension deviation ΔT1 and the goodness of fit to a certain rolling load deviation ΔP1 of membership function A 1.2, and cut the membership function 8 amount at the smaller goodness of fit. . The ΔL drift of the center of gravity of the cut membership function 81 is inferred by the fuzzy control rule R1.

This is the rolling leveling 115A of the rolling mill 2 (the direction in which the rolling position on the operator side is tightened is positive).

(b) Fuzzy control rule R2 Membership function A21 indicates the degree to which the operator side tension detection signal 3A described above is larger than the drive side tension detection signal 4A.

The horizontal axis indicates the tension deviation signal 11A (a value obtained by subtracting the drive side tension detection signal 4A from the operator side tension detection signal 3A), and the vertical axis indicates the degree of conformity.

Membership function A22 indicates adaptation that allows the operator side rolling load to be varied when the drive side rolling load detection signal 6A is larger than the operator side rolling load detection signal 5A.

The horizontal axis is the rolling load deviation (from the operator side rolling load detection signal 5A to the drive side rolling load detection signal 6A).
The vertical axis shows the degree of fitness.

The membership function 82 is a membership function for setting a rolling leveling ff1l 5A that greatly tightens the rolling position on the operator side of the rolling mill 2.

The degree of conformity of the membership function A21 to a certain tension deviation ΔT1 and the degree of conformity of the membership function A22 to a certain rolling load deviation ΔP1 are compared, and the membership function 82 is cut at the smaller degree of conformity. △L of the center of gravity of the cut membership function B2
The coordinates are the pressure level m15A of the ratio machine 2 inferred by the fuzzy control rule R2 (the direction in which the pressure position on the operator side is tightened is positive).

(C) Fuzzy control rule R3 Membership function A31 indicates the degree to which the drive side tension detection signal 4A described above is larger than the operator side tension detection signal 3A.

The horizontal axis shows the tension deviation signal 1]A (the value obtained by subtracting the drive side tension detection signal 4A from the operator side tension detection signal 3A), and the vertical axis shows the degree of conformity.

The membership function A32 indicates the degree to which the drive side rolling load can be eaten when the operator side rolling load detection signal 5A is larger than the drive side rolling load detection signal 6A. The horizontal axis shows the rolling load deviation (the value obtained by subtracting the drive side rolling load detection signal 6A from the operator side rolling Gj weight detection signal 5A), and the vertical axis shows the degree of conformity.

The membership function 83 is a rolling leveling m that greatly tightens the rolling position on the drive side side of the rolling mill 2.
This is a membership function for setting 15A.

The degree of conformity of the membership function A31 to a certain tension difference ΔT1 is compared with the degree of conformity of the membership function A32 to a certain rolling load deviation ΔP1, and the membership function 83 is cut at the smaller degree of conformity. ΔL of the center of gravity of the cut membership function 83
The coordinates are the rolling leveling ff115A of the rolling mill 2 inferred by the fuzzy control rule R3 (the direction in which the rolling position on the operator side is tightened is positive).

(2) Fuzzy control rule R4 The membership function A41 determines the degree to which the drive side tension detection signal 4A described above is more sensitive than the operator side tension detection signal 3A.

The horizontal axis indicates the tension deviation signal 11A (a value obtained by subtracting the drive side tension detection signal 4A from the operator side tension detection signal 3A), and the vertical axis indicates the degree of conformity.

The membership function A42 indicates the degree to which the drive side rolling load can be varied when the drive side rolling load detection signal 6A is larger than the operator side rolling load detection signal 5A. The horizontal axis is the rolling load deviation signal 13A (operator side rolling load detection signal 5A).
(the value obtained by subtracting the drive side rolling load detection signal 6A from the drive side rolling load detection signal 6A), and the vertical axis indicates the degree of conformity.

Membership function B4 is a rolling level m 1 that slightly tightens the rolling position on the drive side of the rolling mill 2.
5 This is a membership function for setting A.

The suitability of the membership function A41 for a certain tension deviation ΔT1 is compared with the suitability of the membership function A42 for a certain rolling load deviation ΔP1, and the membership function 84 is cut at the smaller one. The ΔL polar coordinate of the center of gravity of the cut membership function 84 is the rolling mill leveling m15A inferred by the fuzzy control rule R4 (the direction in which the rolling position on the operator side is tightened is positive).

Membership functions Bl, B2. B3. ΔL polar coordinate of the center of gravity of the figure of membership function Bo created by superimposing B4 Rolling level of rolling mill 2 inferred by fuzzy control rules R1, R2, R3, R4 ff115A
This is the setting value.

Using FIG. 2 as an example, the process of determining the pressure leveling amount ΔL when the tension deviation ΔT is ΔT1 and the rolling load deviation ΔP is ΔP1 will be described.

(E) When the tension deviation ΔT inferred by the fuzzy control R1 is ΔT1, the fitness determined by the membership function All is ω].

When the rolling load deviation ΔP is ΔP1, the fitness determined by the membership function A12 is ω2.

In this example, since ω1 minus ω2, the membership function 81
is cut at ω1, so the shaded part of B1 is the reduction leveling f inferred by fuzzy control R1.
This is a membership function that means f115A.

(v) When the tension deviation ΔT inferred by the fuzzy control R2 is ΔT1, the fitness determined by the membership function A21 is ω3.

When the rolling load deviation ΔP is ΔP1, the fitness determined by the membership function A22 is ω4.

In this example, since ω4 minus ω3, the membership function B
2 is cut at ω4, so the shaded part of B2 becomes the membership function meaning the reduction leveling amount 15 A inferred by the fuzzy system HR2.

(g) When the tension deviation ΔT inferred by the fuzzy control R3 is ΔT1, the appropriate angle determined by the membership function A31 is zero. Therefore, the fuzzy control R
There is no membership function meaning the roll leveling ff115A inferred by 3.

(H) When the tension deviation ΔT inferred by the fuzzy control R4 is ΔT1, the fitness determined by the membership function A41 is zero. Therefore,
Rolling down leveling amount 1 inferred by fuzzy control R4
There is no membership function that means 5A.

Therefore, in this example, the diagonal part of the membership function B1 which means the amount of reduction leveling 15A inferred by the fuzzy system &I [rule R1] and the membership function which means the amount of reduction leveling 15A inferred by the fuzzy control rule R2 ΔL polar coordinates of the center of gravity of the shape of the membership function BO created by overlapping the shaded part of function B2, tension deviation ΔT - ΔT1, and rolling 1.1 serious injury difference Δ
This is the rolling leveling m 15 A setting value of the rolling mill 2 for correcting the meandering of the rolled material 1 when P-ΔP1.

Note that the membership functions All illustrated in FIG.
A12. A21. A22. A31A32. A41. A4
2. Bl, B2. B2S3 is to be adjusted when the meandering control device for a rolling mill according to this embodiment is applied to a plant, and the shape of the figure shown in FIG. 2 is variable.

Furthermore, the membership functions All, A illustrated in FIG.
21. A31. A41 is a membership function that means tension deviation, and its number can be added when applying the meandering control device for a rolling mill according to this embodiment to a plant.

Furthermore, the membership function A12. shown in FIG.
A22. A32. A42 is a membership function that means rolling Zf heavy industry, but its number can also be added when the rolling mill meandering control device according to this embodiment is applied to a plant.

〔Effect of the invention〕

As described above, according to the present invention, the signal representing the deviation between the tension detection signal on one side in the moving direction of the rolled material and the tension detection signal on the other side in the moving direction of the rolled material, and the rolled material of the rolling mill In response to the rolling signal on one side of the moving direction (signal indicating the deviation from the Enobu GI heavy detection signal on the other side of the rolling material moving direction of the rolling machine), rolling is performed based on these width difference signals. We determined the amount of pressure leveling to control the meandering of the rolled material within a range that does not affect the thickness of the material, and adjusted the amount of rolling leveling of the Lg machine using this value. Even if the tension deviation between the operator side and the drive side of the rolling mill persists, the rolling load difference between the operator side and the drive side of the rolling mill does not become excessive. It is possible to provide a meandering control device for a rolled material that can achieve optimal meandering control of a rolled material within a range that does not adversely affect thickness accuracy and shape.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of a meandering control device for a rolled material according to an embodiment of the present invention, and FIG. 2 is a fuzzy control included in the meandering control device for a rolled material according to an embodiment of the present invention. FIG. 3, which is an explanatory diagram of the operation of the apparatus, is a block diagram showing the configuration of a conventional meandering control apparatus for rolled material. DESCRIPTION OF SYMBOLS 1... Rolled material, 2... Rolling machine, 3... Operator side side tension detector, 3A... Operator side side tension detection signal, 4... Drive side side force detector, 4
A...Drive side tension detection signal, 5...Operator side rolling load detector, 5A...Operator side rolling load detection signal, 6...Drive side rolling load detector, 6A...Drive side pressure 'd (';7
Heavy detection signal, 7... Operator side side lowering drive device, 8... Drive side side lowering drive device, 9... Operator side side lowering device control device, ]0... Dry side side lowering position control device, 11...Subtractor, 11A
...Tension deviation signal, 12...Tension deviation limit device, 12A...Tension deviation No. 78 after dead band processing,
13... Subtractor, 13A... Rolling load deviation No. 18,
14... Rolling load limit device, 14A... Rolling load deviation signal after dead band processing, 15... Fuzzy control device, 15A... Rolling leveling amount, 16...
Lowering position leveling amount upper and lower limit device, 16A...
・Lowering position leveling amount with upper and lower limits, 17・
・・Operator side pressure down position reference value setter, 17A・
... Operator side pressure down position reference value, 18... Drive side pressure down position reference value setter, 18A... Drive side pressure down position reference value, 19... Subtractor, 19A.
... Operator side lower position reference value after leveling amount correction, 20... Adder, 2OA... Drive side end position reference value after leveling amount correction.

Claims (1)

[Claims] 1. Receive a tension detection signal on one side in the moving direction of the rolled material rolled in a rolling mill and a tension detection signal on the other side in the moving direction of the rolled material, and detect the tension detection signal between these tension detection signals. a tension deviation signal output means for determining and outputting a deviation; and receiving a rolling load detection signal on one side of the rolling mill in the direction of movement of the rolled material and a rolling load detection signal on the other side of the rolling mill in the direction of movement of the rolled material; A rolling load deviation signal output means for determining and outputting the deviation between the load detection signals, and a range that does not affect the thickness of the rolled material based on the deviation signals outputted from both the means. 1. A meandering control device for a rolled material, comprising: an adjusting means for determining a rolling leveling amount for controlling the meandering of a rolled material, and adjusting the rolling leveling amount of a rolling mill using the determined value. 2. The adjustment means receives the tension deviation signal output from the tension deviation signal output means and the rolling load deviation signal output from the rolling load deviation signal output means, and performs fuzzy control based on these two deviation signals. Claim 1: Fuzzy control means that determines the leveling amount by a method and adjusts the leveling amount of the rolling mill using the determined value.
The meandering control device described.