JPH0543149A - Speed command computation - Google Patents

Abstract

(57) [Abstract] [Purpose] In an elevator system, one deceleration start position signal is used to give a speed command for maintaining the same riding comfort even if the speed at the deceleration start time is different. [Structure] In order to obtain the same deceleration when traveling at high speed or low speed by one deceleration start signal, at low speed, deceleration is started after traveling a fixed distance L ₂ . This L
The equation of ₂ is represented by (Vh ² −Ve ² ) · L ₁ / Vh. L
₁ ; deceleration distance, Vh; high speed, Ve; low speed

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a speed command calculation method for starting deceleration using a position detector, which is applied to, for example, an elevator.

[0002]

2. Description of the Related Art FIG. 3 is a characteristic diagram showing a conventional example.
This is a calculation method that detects the position detector Ls and immediately starts deceleration calculation. That is, from the speed-time characteristics of FIG. 3, in a system having a speed v _h and a speed v _e lower than that, separate position detectors Ls ₁ and Ls ₂ are provided, respectively, and deceleration start is performed by these. ing.

[0003]

However, in such a method, each position detector is required, and further, an arithmetic unit attached thereto is added, which is not a preferable method. The present invention was created in view of the above points,
It is an object of the invention to provide a speed command calculation method which is simple and inexpensive.

[0004]

Means for Solving the Problems That is, the means for achieving its purpose, running at a high speed operating speed v _h, performed immediately decelerating operation if it detects a signal of the position detector, allowed to start deceleration . Running at a high speed operating speed v _h lower low-speed driving speed v _e, without decelerating immediately if it detects a signal of the position detector, the distance at a low speed operating speed v _e (v _h
² -v _e ² ) × L ₁ / v _h ² is the method of performing deceleration calculation and decelerating after traveling.

[0005]

[Action] its action, the rate of 2 - from the time characteristics, the distance to the target stop position from the position detector Ls is L _1, fast operating speed v _h, the position detected in the traveling at a low speed operating speed v _e When the signal from the device Ls is detected, the distance (S ₂ + S ₃ ), that is, [= (v _h ² -v _e ² ) L ₁ / v _h ² ]
_This is a method in which the vehicle is driven with _e , deceleration calculation is performed immediately after that, and deceleration is started. An embodiment of the present invention will be described in detail below with reference to the drawings.

[0006]

FIG. 1 is a speed-time characteristic diagram showing an embodiment of the present invention, in which a pulse generator output PG is measured from a signal input of a position detector Ls and a distance [(v _h ² -v _e ² ) L ₁ / v _h ² )
Speed v until the number of PGs corresponding to the distance traveled is measured
Driving at _e , the remaining distance to the target stop position [L ₁ = (v
Deceleration calculation is performed by _h ² -v _e ² ) L ₁ / v _h ² ], and deceleration is performed to the stop target position. L ₁ is the position detector Ls from the stop target position
Is the distance to.

[0007]

As described above, according to the present invention, when deceleration is performed in a system having two different speeds,
Since only one position detector is needed, the speed command calculation method is extremely useful because it shortens the adjustment time of the position detector and reduces the cost.

[0008]

[Brief description of drawings]

FIG. 1 is a speed / time characteristic diagram showing an embodiment of the present invention.

FIG. 2 is a characteristic diagram illustrating the operation of FIG.

FIG. 3 is a characteristic diagram showing a conventional example.

[0009]

[Explanation of symbols]

v _h High-speed operation speed v _e Low-speed operation speed S ₁ to ₄ Distance L _s Position detector L ₁ Distance from stop target position to position detector Ls ₁ Position detector Ls ₂ Position detector

Claims (1)

[Claims] _{1. A} position detector L at a distance L ₁ from a target stop position.
_{When S} is installed and the vehicle is traveling at a high operating speed v _h , the device that starts deceleration immediately by the signal from the detector L _S , the low operating speed v _e lower than the high operating speed v _h
If you are driving in
After traveling L ₂ = (v _h ² -v _e ² ) × L ₁ / v _h ² ,
Speed command calculation method to start deceleration.