Control system stability analysis method and device and computer-readable storage medium

A technology of control systems and analysis methods, applied in general control systems, control/regulation systems, testing/monitoring control systems, etc., and can solve the problem of low adaptability

Active Publication Date: 2021-02-05
PURPLE MOUNTAIN LAB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In the past practice, it often takes hundreds of experiments to get the empirical range of the effective distance between the welding tor

Method used

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  • Control system stability analysis method and device and computer-readable storage medium
  • Control system stability analysis method and device and computer-readable storage medium
  • Control system stability analysis method and device and computer-readable storage medium

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Experimental program
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Embodiment 1

[0113] It is precisely because of the technical difficulties in the background technology that we propose a corresponding method. First of all, the automation structure of the welding torch system should be analyzed, and the preliminary matrix of the control system should be obtained for the automation structure. Then, the distance between the welding torch and the welding point is set as an uncertain element in the control matrix, and a control matrix with one position parameter is obtained. Next, construct the corresponding Kronercker-Lyapunov matrix of the original matrix, and by judging the range of the eigenvalues ​​of Kronercker-Lyapunov, the judgment that the eigenvalues ​​of the original matrix are located on the imaginary axis can be solved, so that the stability of the control matrix can be analyzed; the following is produced by welding process The system is taken as an example to describe the implementation process of the technical solution of this application in de...

Embodiment 2

[0125] In addition to the welding production system, the problems faced in other industrial production systems are similar. In a system that uses current and voltage to control the operation of the engine, it contains resistance, inductance and capacitance equipment. The inductance equipment of the system is due to aging. With uncertain factors, it will change randomly within a range. Now it is hoped that the change of the inductance factor in those ranges will not affect the stability of the engine; and under the action of those factors, it will affect the stability of the engine system; thus it can be determined whether the inductance should be replaced. The solution is as follows:

[0126] Step 1, according to the circuit relationship of the motor current and voltage, list the corresponding differential equations;

[0127] Step 2. According to modern control theory, rewrite the high-order derivative differential equation system into a first-order differential equation syst...

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Abstract

The invention discloses a control system stability analysis method, a control system stability analysis device and a computer-readable storage medium, and the core idea is as follows: by constructinga Kronercker-Lyapunov matrix, the boundary values of uncertainty parameters when a control matrix is located at stable and unstable critical positions are calculated by using the Kronercker-Lyapunov matrix, and finally the stability interval of a control system is calculated through the boundary values. According to the method, an automatic system with a feedback function is effectively controlled, and the key point is that the control system is ensured to operate in a stable interval, so that the control system can be effectively controlled all the time when the stable interval is obtained, high-quality production is realized, and the production efficiency is improved. The calculation method is simple and clear, is low in calculation complexity, and has a good help effect on the judgmentwork of the stability interval of an uncertainty control system.

Description

technical field [0001] The present invention relates to the stability analysis of the control system, especially when the control system contains uncertain factors, it can delineate the effective range of the uncertain factors, and according to the steady-state range of the uncertain factors, it can be considered whether the production equipment needs to be reset. debugging. Background technique [0002] In the robot welding process, due to the aging of automation equipment, the effective distance between the welding torch and the welding spot will deviate from the normal value range. By assuming a smart camera, the distance between the welding torch and the solder joint can be accurately tested. In the analysis of the production system, the distance is regarded as an uncertain quantity exogenous to the system. To effectively control the automation system with feedback function, the key is to ensure that the control matrix operates within a stable range. According to the k...

Claims

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Application Information

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IPC IPC(8): G05B23/02
CPCG05B23/0243G05B2219/24065
Inventor 夏飞鹏祁学豪陈刚
Owner PURPLE MOUNTAIN LAB
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