基于速度反馈与PID的电液比例位置系统特性仿真分析  

Simulation analysis of electro hydraulic proportional position system based on the speed of feedback and PID

作　　者：王收军[1,2] 杨静[1,2] 郭津津[1,2] 

机构地区：[1]天津市先进机电系统设计与智能控制重点实验室,天津300384 [2]天津理工大学机械工程学院,天津300384

出　　处：《重型机械》2017年第3期58-63,共6页Heavy Machinery

基　　金：天津市高等学校科技发展基金计划项目(20120705)

摘　　要：在建立的电液比例位置系统数学模型基础上,借用Matlab软件中的Simulink工具包对电液比例位置系统构建仿真模型,进行动态分析.结合实际生产要求,绘制Bode图验证建立系统的稳定性;利用速度反馈与PID控制,对位置系统的动态特性进行优化设计。仿真结果表明:速度反馈与PID结合的校正,使得位置系统超调量减小54.5%,响应时间减小0.62 s,稳态误差降低0.01 m;较正后系统的冲击消散,响应速度加快,响应更加平稳,控制精度得到提升,为系统的深层次优化提供依据。Based on the mathematical model of the electro-hydraulic proportional position system, a simulation model of electro-hydraulic proportional position system was built by using the Simulink tool in Matlab software, and the dynamic analysis was carried out. According to the actual production requiremenls, Bode chart was drawn to verify the stability of the system. Using of speed feedback and PID control, the dynamic characteristics of the position system were optimized and designed. The simulation results show that the overshoot of the posi- tion system decrease 54. 5% , and the response time is reduced by O. 62 s, the steady state error is reduced by 0.01m through adjusting of combine velocity feedback and PID. After the system was adjusted, its impact was dissipation, the response speed was more stable and fast, the control precision was higher, which provicles the basis for the deer） Level optimization of the system.

关 键 词：电液比例位置控制 SIMULINK 速度反馈 PID控制 

分 类 号：TH137.5[机械工程—机械制造及自动化]