油气弹簧试验台测控系统设计与仿真

油气弹簧试验台是测试油气弹簧性能的必要设备,传统的机械式试验台输出信号误差大,难以满足试验需求,因此需要设计一套性能良好、精准度高的试验台来对油气弹簧进行试验。本文分析了电液伺服试验台的基本组成,并对控制系统进行了设计与仿真,通过利用Amesim和Simulink联合仿真的方法对测控系统进行研究,建立电液伺服系统的数学模型。采用模糊PID控制对系统的动态特性进行控制,并与常规PID的控制方法进行对比。结果表明,模糊PID控制方法快速平稳,其达到稳态的时间为常规PID的40%,并且系统具有较好的鲁棒性和抗干扰能力。

Design and Simulation of Test and Control System for Hydro-pneumatic Spring Test-bench

The oil-gas spring test bench is a necessary equipment to test the performance of the oil-gas spring.The output signal error of the traditional mechanical test bench is big,so it is difficult to meet the test requirements.Therefore,it is necessary to design a set of test bench with good performance and high accuracy to test the hydro-pneumatic spring.In this paper,the basic composition of the electro-hydraulic servo test bench is introduced,and the control system is designed and simulated.By using AMESim and Simulink co-simulation method,the dynamic characteristics of the control system are studied,and the mathematical model of the control system is established.Fuzzy PID control is used to optimize and correct the dynamic characteristics of the system,and is compared with the conventional PID control method.The results show that the fuzzy PID control method is fast and stable,the time to reach the steady state is 40%of the conventional PID,and the system has good robustness and anti-interference ability.