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

A control parameter, AC servo technology, applied in control/regulation systems, adaptive control, general control systems, etc., can solve the cumbersome and difficult process, the rise time that characterizes the response performance of the system, the overshoot conflict that characterizes the stability of the system, Unable to take into account various performance indicators and other issues, to achieve the effect of flexible selection, good adaptability, and simple operation

Active Publication Date: 2020-02-21
HUAZHONG UNIV OF SCI & TECH
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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 respons...

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

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Embodiment

[0060] A self-tuning method for control parameters of an AC servo speed control system based on the bat algorithm, which is mainly divided into the following steps. The algorithm flow chart is as follows: figure 1 shown.

[0061] Step 1: Set the control parameter search space.

[0062] In industrial applications, the AC servo speed control system adopts such as figure 2 In the double closed-loop cascaded control structure shown, the inner layer is the current loop, including the current PI controller, power converter, motor and sensor, etc., and the outer layer is the speed loop, including the speed regulator and the internal current loop module. The function of the internal current loop is mainly to quickly respond to the current command signal and drive the motor to run through the power converter, and its parameters are mainly affected by the electromagnetic parameters of each component. Therefore, the current loop controller is generally adjusted and determined by the m...

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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...

Claims

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Application Information

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IPC IPC(8): G05B13/04
CPCG05B13/042
Inventor 宋宝李虎陈天航唐小琦周向东杨承博钟靖龙邹益刚向刘洋潘佳明
Owner HUAZHONG UNIV OF SCI & TECH
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