Bat algorithm-based control parameter self-tuning method for AC servo speed regulation system

Abstract

The invention discloses a bat algorithm-based control parameter self-tuning method for an alternating current (AC) servo speed regulation system. The method comprises the following steps of step one,setting corresponding linear weighting performance indexes and setting a parameter search space according to different application working conditions and performance preferences; step two, collectingsignal parameters of the AC servo speed regulation system for calculating the performance index of the current system; step three, establishing a fitness evaluation function and initializing relevantparameters; and step four, searching for a control parameter capable of realizing the optimal system performance by using a bat algorithm. Through the method disclosed by the invention, the difficultand time-consuming manual parameter tuning process is avoided; and compared with the controller parameter tuning method of the servo system at this stage, the operation is simple, the adaptability isgood, and the comprehensive performance demands under multiple performance indexes can be particularly guaranteed.

Description

technical field [0001] The invention relates to the field of control parameter tuning of an AC servo system, in particular to a method for self-tuning control parameters of an AC servo speed control system based on a bat algorithm. Background technique [0002] AC servo system has the advantages of fast response, wide speed range, accurate positioning and high reliability. As one of the core components of manufacturing automation equipment, it is widely used in CNC machine tools, industrial robots, medical equipment, automobile industry and other fields. Further improving the performance of the AC servo system has very important practical significance for modern industrial production. [0003] At present, the motor speed control of the AC servo system is usually realized by a cascaded control strategy including the inner current loop and the outer speed loop. The function of the current loop is to improve the system response while suppressing internal disturbances; the func...

AI Technical Summary

Problems solved by technology

[0005] The main problems and defects in the prior art include: the performance of the AC servo system is expressed in different aspects such as responsiveness, precision and stability, and different performance indicators directly affect each other, and sometimes conflict with each other, for example, to characterize the response performance of the system The rise time and the overshoot characterizing the stability of the system are performance indicators for conflicting

The control parameter tuning method based on moment of inertia identification or model identification is cumbersome and difficult, and cannot take into account multiple performance indicators

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