轴向柱塞泵变量机构的控制特性与优化研究  

Research on Control Characteristics and Optimization of Variable Mechanism of Axial Piston Pump

作　　者：董佳鑫 胡晓兵[1,2] 杜玲羽 刘国刚 杨莽 DONG Jiaxin;HU Xiaobing;DU Lingyu;LIU Guogang;YANG Mang(School of Mechanical Engineering,Sichuan University,Chengdu Sichuan 610065,China;Industrial Technology Research Institute of Yibin Sichuan University,Yibin Sichuan 644600,China;Sichuan Yibin Push Drive Co.,Ltd.,Yibin Sichuan 644000,China)

机构地区：[1]四川大学机械工程学院,四川成都610065 [2]宜宾四川大学产业技术研究院,四川宜宾644600 [3]四川省宜宾普什驱动有限责任公司,四川宜宾644000

出　　处：《机床与液压》2025年第5期107-113,共7页Machine Tool & Hydraulics

基　　金：四川省科技计划重点研发项目(2022YFG0075);川大-宜宾市校市战略合作项目(2020CDYB-3)。

摘　　要：为提高轴向柱塞泵变量机构的控制特性,改善由于系统非线性、时变性等因素导致的响应速度慢和超调量较大等问题,以轴向柱塞泵的变量机构为研究对象。根据系统物理结构及工作原理,通过经验累计及理论分析计算,建立比例阀控液压缸各个环节的数学模型。采用AMESim仿真平台对变量机构及比例阀控液压缸进行系统建模,并将仿真结果与样机试验结果进行对比,以验证模型的准确性。基于AMESim/Simulink联合仿真平台建立PID及模糊PID控制算法联合仿真模型,对比分析闭环系统的动态响应性能。仿真结果表明:相较于普通PID控制,自适应模糊PID控制效果更好,系统超调量显著减小,缩短了调节时间并有效减少了稳态误差,具有良好的控制特性。In order to improve the control characteristics of the variable mechanism of the axial piston pump and address issues such as slow response speed and large overshoot caused by system nonlinearity and time-varying factors,the variable mechanism of the conical cylinder axial piston pump was taken as the research object.Based on the physical structure and working principle of the system,mathematical models of the proportional valve controlled hydraulic cylinder was established through empirical accumulation and theoretical analysis calculation.The AMESim simulation platform was used to model the variable mechanism and the proportional valve-controlled hydraulic cylinder,and the simulation results were compared with the experimental results of the prototype to verify the accuracy of the model.The joint simulation model of PID and fuzzy PID control algorithms was established based on the AMESim/Simulink joint simulation platform,and the dynamic response performance of the closed-loop system was compared and analyzed.The simulation results show that compared with the ordinary PID control,the adaptive fuzzy PID control achieves better results,significantly reducing the system′s overshoot,shortening the adjustment time,and effectively reducing the steady-state error,exhibiting excellent control characteristics.

关 键 词：轴向柱塞泵 变量机构 位置控制 模糊控制 联合仿真 

分 类 号：TH137.51[机械工程—机械制造及自动化]