Position Tracking Control Method of Electro-hydraulic Servo System Considering Input Time Delay Constraints

An electro-hydraulic servo system, tracking control technology, applied in the direction of program control, computer control, general control system, etc., can solve the problem of few non-linear system control strategies
CN108345268BActive Publication Date: 2021-06-08NANJING UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
NANJING UNIV OF SCI & TECH
Publication Date
2021-06-08

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Abstract

The invention discloses a position tracking control method of an electro-hydraulic servo system considering input time-delay constraints. The method includes: establishing a mathematical model of the electro-hydraulic servo system; designing a controller considering input time-delay constraints; The stability is proved theoretically, and the result that the system has bounded and stable position tracking performance and all signals of the system are bounded is obtained. The present invention obtains an open-loop error system without input time-delay by referencing an input time-delay compensation signal in the controller, and combines the Lyapunov-Krasovsky functional method to eliminate the influence of time-delay; the present invention The invention effectively solves the problem that the input time lag constraint affects the performance of the system in the actual electro-hydraulic servo system, and can obtain better high-precision position tracking performance.
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Description

technical field

[0001] The invention relates to the technical field of electro-hydraulic servo control, and mainly relates to a position tracking control method of an electro-hydraulic servo system considering input time lag constraints. Background technique

[0002] With the continuous development of automation and precision in modern industry, the high-performance requirements for transmission systems also follow, and this demand is becoming more and more intense in various industrial fields. Due to its outstanding advantages such as fast response, high precision, convenient maintenance, high transmission efficiency, and convenient energy acquisition, electro-hydraulic servo systems are widely used in various important fields such as robots, machine tools, and aerospace, and gradually occupy a dominant position. With the continuous improvement of servo performance requirements for electro-hydraulic servo systems such as tracking accuracy, dynamic bandwidth, and ultra-low-s...

Claims

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