Auto-disturbance rejection position servo system optimization design method based on improved CPSO

Abstract

The invention discloses an auto-disturbance rejection position servo system optimization design method based on an improved CPSO. By aiming at problems of permanent magnet synchronous motor servo systems on high position control precision, fast response, and stable performance, a double-loop control structure is adopted, and a PMSM auto-disturbance rejection position servo control system is established. By aiming at a parameter setting problem of an auto-disturbance rejection position controller, the improved Chaos Particle Swarm Optimization (CPSO) is provided. By adopting the CPSO, a position of a particle is initialized according to cubic chaotic mapping, and an index self-adaptive way having adjustable parameters is used to adjust inertia weight in a non-linear way, and at the same time, the position of the particle is updated by adopting a chaos and stability alternate way, and therefore the convergence rate and the global optimization ability of the CPSO are effectively improved, and the CPSO is used for the optimization of the auto-disturbance rejection position controller parameters. By combining with a fitness function including position control requirements, the optimization design of the PMSM position servo control system is realized, the position control precision and the response speed of the servo system are improved, and a strong disturbance rejection ability is provided.

Description

technical field [0001] The invention belongs to the technical field of high-precision position servo control systems, and in particular relates to an optimal design method for an active disturbance rejection position servo system based on CPSO, which is suitable for high-precision position control of permanent magnet synchronous motors. Background technique [0002] In the high-precision position servo system, due to the superior performance of the permanent magnet synchronous motor (PMSM), it is widely used in various industrial fields, and has gradually become the mainstream of the high-precision servo system execution motor. At present, in the traditional PMSM position servo system, the most common form is the three-loop linear structure. PID controllers are generally used in the control loop, and the implementation is relatively simple. However, as a multivariable, nonlinear, and strongly coupled The controlled object, in the actual operation of the servo system, there a...

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Problems solved by technology

For the ADRC position controller, some researchers have introduced the fuzzy control theory into the design of the position ADRC controller, which reduces the adjustable parameters. However, the design of the fuzzy control rule is more difficult, and only the nonlinear error in the ADRC is adjusted. Feedback parameters, still did not solve the problem of parameter tuning

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