Transactions of Materials and Heat Treatment

Title：Simulation analysis on volumetric speed regulation system control for hydraulic machinery based on PID algorithm optimized by GA

Authors： Liu Xiaojuan1 Xia Yundong1 Li Gang2 Liu Yanjun3 Shi Chun′e1

Unit： (1. School of Automotive Engineering Yellow River Transportation Institute 2. School of Mechanical Engineering Henan Polytechnic University 3. Chery Commercial Vehicle Anhui Co. Ltd.

KeyWords： volumetric speed regulation system genetic algorithm PID control rotation speed control overshoot

ClassificationCode：

year,vol(issue):pagenumber：2022,47(3):164-168

Abstract：

In order to reduce the fluctuation of rotation speed control for volumetric speed regulation system used in hydro-mechanical continuously variable transmission(HMCVT), a control method of PID optimized by genetic algorithm (GA) was designed, and the simulation analysis was carried out by AMESim and MATLAB/Simulink combined software. The results show that after optimization by the control method of PID optimized by GA , the rotation speed reaches overshoot of 0.35% and shows stable state after 0.25 s. Compared with the traditional PID control method, the overshoot is reduced by 18.5%, the required adjustment time is shortened by 0.17 s, and the fluctuation of rotation speed is significantly reduced. Thus, the control method of PID optimized by GA can make the system obtain a shorter adjustment time, achieve more efficient response performance, greatly reduce the overshoot of rotation speed, significantly improve the speed regulation and stability of the system, and obtain better dynamic response performance and rotation speed control precision, which can provide favorable conditions to meet the engineering application.

Funds：

河南省高等职业学校青年骨干教师培养计划资助项目（2019GZGG034）

刘小娟（1987-），女，学士，讲师 E-mail：habing62122@126.com

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