Test system and control method for electro-hydraulic servo online self-adjusting fuzzy PID control

Abstract

The invention discloses a test system for electro-hydraulic servo online self-adjusting fuzzy PID control and an online self-adjusting fuzzy PID control method for an electro-hydraulic servo position system. The test system for the electro-hydraulic servo online self-adjusting fuzzy PID control comprises an industrial personal computer, a data processing system, an electro-hydraulic servo control system, an online self-adjusting fuzzy PID controller, a processing circuit and a sensor. Different sensor signals in the sensor pass through the processing circuit, digital signals are gathered, and the online self-adjusting fuzzy PID control is performed through an electro-hydraulic servo system to realize the test control for the electro-hydraulic servo system. The test system for the electro-hydraulic servo online self-adjusting fuzzy PID control is featured with high test efficiency, good stability, strong practicability and the like, realizes the online real-time regulation for PID parameters and has strong identification performance and robustness for the online system parameter self-adjusting, and accordingly the system test precision and stability are improved, and the economical benefit and social benefit are good.

Description

technical field [0001] The invention relates to the technical field of a test system and a control algorithm of an electro-hydraulic servo valve, and more specifically relates to a test system and a control method for an online self-adjusting fuzzy PID control of an electro-hydraulic servo. Background technique [0002] In recent years, with the rapid development of the manufacturing industry, more and more high-end CNC machine tools use electro-hydraulic position servo control systems, making it difficult for existing electro-hydraulic servo test systems and control methods to meet the requirements of electro-hydraulic servo system control. Existing electro-hydraulic servo test systems and control methods have the following problems: one is that some existing high-grade CNC machine tool electro-hydraulic servo test systems use manual test systems, and these test systems utilize signal generators to generate signals, oscilloscopes to measure waveforms, The recorder records d...

AI Technical Summary

Problems solved by technology

[0002] In recent years, with the rapid development of the manufacturing industry, more and more high-end CNC machine tools use electro-hydraulic position servo control systems, making it difficult for existing electro-hydraulic servo test systems and control methods to meet the requirements of electro-hydraulic servo system control

Existing electro-hydraulic servo test systems and control methods have the following problems: one is that some existing high-grade CNC machine tool electro-hydraulic servo test systems use manual test systems, and these test systems utilize signal generators to generate signals, oscilloscopes to measure waveforms, The system test is realized by recording data with the recorder. The structure of the test system is complicated, the test is greatly affected by artificial factors, and the control accuracy is not high.

Second, the existing electro-hydraulic servo control system is controlled by fuzzy PID method. It is difficult to adjust the control parameters by using fuzzy PID, and the system identification is poor and the robustness is not strong.

It is difficult to achieve the ideal control effect for the control of the electro-hydraulic servo position control system of high-end CNC machine tools

Images