变排量非对称轴向柱塞泵抗扰控制及并行整定方法  

Anti-interference control and parallel tuning method for variable displacement asymmetric axial piston pump

作　　者：宁志强[1,2] 卫立新 权龙 赵美卿 高有山 NING Zhi-qiang;WEI Li-xin;QUAN Long;ZHAO Mei-qing;GAO You-shan(College of Mechanical Engineering,Taiyuan University of Science and Technology,Taiyuan 030024,China;Department of Mechanical and Electronic Engineering,Shanxi Institute of Technology,Yangquan 045000,China;College of Mechanical and Vehicle Engineering,Taiyuan University of Technology,Taiyuan 030024,China)

机构地区：[1]太原科技大学机械工程学院,山西太原030024 [2]山西工程技术学院机械电子工程系,山西阳泉045000 [3]太原理工大学机械与运载工程学院,山西太原030024

出　　处：《工程设计学报》2022年第4期401-409,共9页Chinese Journal of Engineering Design

基　　金：国家自然科学基金资助项目(51875381);山西省研究生创新项目(2021Y695)。

摘　　要：针对变排量非对称轴向柱塞泵因斜盘振荡严重而引起流量脉动较大的问题,提出将变量阻力矩视作干扰信号,采用抗扰控制算法来提高其变排量控制性能。通过SimulationX和Simulink平台联合仿真,对比在不同频率的变量阻力矩作用时常规PID(proportion integration differentiation,比例积分微分)控制、指数收敛干扰观测器控制、非线性PID控制、自抗扰控制和滑模控制下变排量非对称轴向柱塞泵斜盘角度的响应特性,以得到最合适的抗扰控制算法。在此基础上,提出一种基于粒子群优化(particle swarm optimization,PSO)的控制参数并行整定方法。仿真结果表明,在10,20和100 Hz干扰信号的作用下,滑模控制下变排量非对称轴向柱塞泵斜盘角度的波动量为常规PID控制下的1.7%,2.2%和23.0%,说明滑模控制算法能大幅减小斜盘振荡和流量脉动。基于PSO的控制参数并行整定方法有效地减小了滑模控制的跟踪误差,整定后的最大超调量减小了87.5%;且该并行整定方法可脱离专业仿真软件,与SimulationX平台仿真相比,其仿真效率提高了10倍以上。研究结果对常规液压控制系统的仿真优化有一定参考价值。Aiming at the problem of large flow pulsation caused by severe swash plate oscillation in variable displacement asymmetric axial piston pump, the variable resistance moment was regarded as the interference signal, and the anti-interference control algorithm was adopted to improve its variable displacement control performance. Under the action of variable resistance moments with different frequencies, the response characteristics of the swash plate angle of the variable displacement asymmetric axial piston pump under conventional PID(proportion integration differentiation) control,exponential convergence disturbance observer control, nonlinear PID control, active anti-interference control and sliding mode control were compared through the co-simulation of SimulationX and Simulink platforms, so as to obtain the most suitable anti-interference control algorithm. On this basis, a parallel tuning method of control parameters based on the particle swarm optimization(PSO) was proposed. The simulation results showed that, under the action of 10, 20 and 100 Hz interference signals, the swash plate angle fluctuation of the variable displacement asymmetric axial piston pump under the sliding mode control was 1.7%, 2.2% and 23.0% of that under the conventional PID control,which proved that the sliding mode control algorithm could greatly reduce the swash plate oscillation and flow pulsation. The parallel tuning method of control parameters based on the PSO effectively reduced the tracking error of sliding mode control, and the maximum overshoot was reduced by 87.5%after tuning;the parallel tuning method could be separated from the professional simulation software,and its simulation efficiency was improved by more than 10 times compared with SimulationX platform simulation. The research results have certain reference value for the simulation and optimization of conventional hydraulic control systems.

关 键 词：变排量非对称轴向柱塞泵 变量阻力矩 抗扰控制 粒子群优化 并行整定 

分 类 号：TH137[机械工程—机械制造及自动化]