摘要
设计了一种以蓄能器变压力供油的电液比例阀控液压电机系统,使液压电机能够驱动一台交流(或直流)发电机以恒速转动并发电;建立了该系统的数学模型,推导出了相应的系统传递函数;基于MATLAB/Simulink软件和AMESim软件的联合,搭建了该系统的仿真模型,并在此基础上提出了蓄能器变压力实时补偿与PID控制相融合的新控制方法,完成了相应的控制系统仿真与实验。仿真和实验结果表明,蓄能器变压力实时补偿与PID控制相融合的新控制方法能够有效抵抗蓄能器变压力供油对电液比例阀控液压电机系统的恒转速控制所造成的不力影响。
An electro-hydraulic valve controlled hydraulic motor system supplied by variable pressure accumula- tors is designed, in which the hydraulic motor need to drive an AC or a DC generator with constant speed. The math- ematic model of this system is built. Then the corresponding system transfer function is deduced. Based on a combi- nation of MATLAB / Simulink and AMESim, the simulation models of the studied system are built, a method with a combination of real time feedback of output pressure of accumulators and PID control is presented in this paper. Its corresponding control system simulation and experiments are completed. The theoretical analysis, simulation and the experimental results show that the mathematic model and the transfer function of the system are correct and effective. The performance of the new control method is better than that of the traditional PID control method.
出处
《机电一体化》
2016年第4期8-15,共8页
Mechatronics
基金
国家自然科学基金资助项目(51475285)
关键词
蓄能器
变压力供油
电液比例阀控液压电机
恒转速控制
变压力实时补偿
PID控制
accumulator hydraulic oil supplied by variable pressure electro-hydraulic valve controlled motorsystem constant of rotation rate output pressure compensation PID control
