JPH04363701A - Automatic adjusting method - Google Patents

Abstract

PURPOSE:To select and adjust variable elements whose adjustment effect is the largest. CONSTITUTION:When a measured value is out of a standardized range, the data of the measured value change due to the fine rotation of each element to be adjusted are collected while an input signal and a measuring instrument are switched (procedure S3). An evaluation function corresponding to the rotation of each element is calculated based on the measured value data and the measured value change data (procedure S4). Then, the element whose improvement index is the largest is selected (procedure S5). The input signal and the measuring instrument are switched to a measuring point where the evaluation function due to the rotation of the selected element is the largest (procedure S6). The selected element is rotated until a decided improvement effect is shown while monitoring the measured value (procedure S7).

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic adjustment method, and more particularly to an automatic adjustment method for a plurality of variable resistors mounted on a circuit board whose output signals interfere with each other.

0002

[Prior Art] As a conventional technology, for example,
Publication No. 0-17503 (simultaneously adjusting three elements to be adjusted by three rotating mechanisms), JP-A-62-1376
No. 04 (simultaneously adjusting three elements to be adjusted by three rotating mechanisms), JP-A-62-166704 (sequentially adjusting three elements to be adjusted by one rotating mechanism,
There is an automatic adjustment method described (iteration).

[0003] The technique disclosed in Japanese Patent Application Laid-Open No. 166704/1983 reduces the time it takes for the element to be adjusted to move below the rotating mechanism and the time required to align the driver of the rotating mechanism with the groove of the element to be adjusted. The purpose is to shorten the latter.

[0004] The technique disclosed in Japanese Patent Application Laid-Open No. 17503/1983 allows two or more adjustment operations to be performed simultaneously, and allows a plurality of mutually related adjustments and independent adjustments to be performed. To shorten the adjustment time and to reduce the delay in adjustment time even if the circuit response delay and dead time are large by making the adjustment system a numerical control system using a microcomputer and predicting the amount of adjustment required. With the goal.

[0005] The technique disclosed in Japanese Patent Application Laid-open No. 137604/1983 relates to a method for predicting the amount of adjustment required, and the Newton method and the bisection method are explained in detail. , the secant method, etc. can be used.

A conventional automatic adjustment method will be explained in detail with reference to the drawings. FIG. 2 is a flowchart showing a conventional example. The automatic adjustment method shown in FIG. 2 includes: Step S1
1 Signals generated from the input signal generator (white signal, color bar signal, dropout signal for video boards, sine wave for audio boards)
is selected by an input signal selector based on the adjustment item and supplied to the circuit board to be adjusted. - Step S12: The output of the output signal processing circuit group is supplied to the microprocessor, and a predictive calculation is performed based on the difference between this output value and a value preset as a target value to determine the amount of rotation of the first adjusted element. - Step S13 This amount of rotation is applied to (the memory of) the first controller of the pulse motor controller group to rotate the first adjusted element. - Step S14 While the first adjusted element is rotating, the microprocessor determines the amount of rotation of the second adjusted element and provides it to (the memory of) the second controller of the pulse motor controller group, Rotating the second adjusted element. - Step S15 While the first and second adjusted elements are rotating, the microprocessor calculates the rotation amount of the third adjusted element, and calculates the rotation amount of the third adjusted element, and controls the third controller (of the pulse motor controller group).
memory) and rotate the third adjusted element.

[0007] Since the processing speed of the microprocessor is sufficiently faster than the response of the pulse motor, multiple motors are rotating at the same time, making it possible to simultaneously adjust multiple adjustment points. can.

[0008]

The conventional automatic adjustment method described above has the disadvantage that when adjusting a plurality of variable elements that interfere with each other, it is not possible to uniquely select the variable element to be adjusted.

[0009]

[Means for Solving the Problems] The automatic adjustment method of the present invention includes (A) a procedure for performing measurements while sequentially switching input signals and measuring instruments, and importing measurement data; (B) ensuring that all measured values are within the standard range; (C) In the procedure (B) above, if all the measured values are within the standard range, the adjustment is finished. (D) In the procedure (B) above, the measurement value is within the specified range. If it is outside the standard range, the procedure is to collect data on changes in measured values due to minute rotations of each adjusted element while switching input signals and measuring instruments. (E) Based on measured value data and measured value change data, Procedure for calculating the evaluation function corresponding to the rotation of the adjusted element, (F) Procedure for selecting the adjusted element with the largest improvement index, (G) Measurement with the largest evaluation function due to the rotation of the selected adjusted element (H) While monitoring the measured value, rotate the selected element to be adjusted until it shows a predetermined improvement effect, and if the predetermined improvement value is not reached, repeat the steps described above. Steps to return to step (A),
It consists of:

0010

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be explained in detail with reference to the drawings.

FIG. 1 is a flow chart showing one embodiment of the present invention. The automatic adjustment method shown in Figure 1 consists of (A) step S1 of measuring while sequentially switching input signals and measuring instruments and importing the measured data, and (B) step of checking whether all measured values are within the standard range. S2, (C) In step S2, if all measured values are within the standard range, the adjustment is finished; (D) In step S2, if the measured values are outside the standard range, the input signal and measuring device are switched. At the same time, step S3 collects data on changes in measured values due to minute rotations of each adjusted element.
, (E) Step S of calculating an evaluation function corresponding to the rotation of each adjusted element based on the measured value data and measured value change data.
4. (F) Step S5 of selecting the adjusted element with the largest improvement index; (G) Step S6 of switching the input signal and measuring device to the measurement point where the evaluation function based on the rotation of the selected adjusted element is the largest. (H) While monitoring the measured value, the selected element to be adjusted is rotated until it shows a predetermined improvement effect, and if the predetermined improvement value is not reached, the process returns to step S1. be done.

0012

The automatic adjustment method of the present invention has the advantage that the variable element with the greatest adjustment effect can be selected and adjusted.

[Brief explanation of the drawing]

FIG. 1 is a flowchart showing one embodiment of the present invention.

FIG. 2 is a flowchart showing a conventional example.

Claims (1)

[Claims] [Claim 1] (A) A procedure for performing measurements while sequentially switching input signals and measuring instruments and importing measurement data; (B)
A procedure for checking whether all measured values are within the standard range; (C) A procedure for terminating the adjustment if all measured values are within the standard range in the procedure (B) above; ), if the measured value is outside the standard range, the procedure is to collect data on the change in measured value due to minute rotation of each adjusted element while switching the input signal and measuring device, (E) Measured value data, measurement Steps for calculating an evaluation function corresponding to the rotation of each adjusted element based on value change data; (F) Procedure for selecting an adjusted element with the largest improvement index; (G) Calculation of the selected adjusted element. Steps for switching the input signal and measuring device to the measurement point with the largest evaluation function due to rotation (H) While monitoring the measured values, rotate the selected element to be adjusted until it shows the specified improvement effect, and then If the improvement value is not reached, return to step (A) above;
An automatic adjustment method comprising: