电液伺服系统直接影响重型刮板输送机可控起动装置(CST)软起动特性。为了提高CST软起动工作性能,采用模糊PID对控制器进行了设计。应用AMESim和MATLAB/Simulink建立了CST电液伺服控制系统联合仿真模型。仿真分析了软起动和负载突变两种工况条件下的动态性能。结果表明,在相同的输入信号下,模糊PID控制相比于PID控制,正常软起动时响应时间缩短了0.4 s,负载突变时产生的波动峰值减少27.8%且重新恢复稳态的时间缩短了6 s。因此,采用模糊PID控制可以快速调节,具有较好的跟随性能和鲁棒性。
Abstract
The electro-hydraulic servo system has a direct influence on soft-starting of controlled starting transmission (CST) in heavy scraper conveyors. In order to improve the soft-starting performance of CST, the fuzzy PID is designed in controller. And a co-simulation model of electro-hydraulic servo system in CST is based on AMESim and MATLAB/Simulink. The dynamic performances are analyzed under the two working conditions, soft-starting and load mutation. The simulation results illustrate that under the same input signal, compared with that of the PID controller, the response time of fuzzy PID controller decreases 0.4 s in soft-starting, the load mutation wave of fuzzy PID decreases 27.8% and the time of resuming steady state decreases 6s in load mutation. So the fuzzy PID controller can achieve quick adjustment and have good tracking performance and robustness.
关键词
流体传动与控制 ;
电液伺服系统 ;
模糊PID ;
可控起动装置
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Key words
fluid power transmission and control ;
electro-hydraulic servo control system ;
the fuzzy PID ;
controlled starting transmission
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