直驱式泵控电-液伺服系统采用闭式油路,系统效率高,但频宽比阀控系统低。风力机变桨距机构采用泵控系统可提高可靠性,但需设计合适的调节规律以提高频宽。基于定制的HY-50型直驱式泵控系统的模型仿真与试验,分析了单闭环比例放大系统的跟踪正弦指令的性能。建立并合理变换模型,选取工程易测量的液压缸高压腔压力为副参数,设计了串级PID-P与PD-P控制系统,并利用区间分解优化的遗传算法优化了PID-P与PD-P参数。经过优化参数的串级系统快速抑制了负载对副回路的扰动,改善了系统的动态性能。
Abstract
Direct drive pump control (DDPC) electrohydraulic servo systems adopting closed oil circuits have high efficiency, but the frequency bandwidths are narrower than valve control systems. Using pump control systems in pitch control mechanism can raise the reliability, but a suitable adjustment law is required to guarantee a wider frequency bandwidth. Based on the simulation and experiments of HY-50 DDPC system, the dynamic performance of the single closed loop system with sine directive input is analyzed. The cascade PID-P and PD-P control system is designed by converting the model and choosing the pressure of high-pressure chamber as a parameter easy to measure. PID-P and PD-P parameters are determined by the interval decomposed optimized genetic algorithm. The results show that the optimized cascade system can restrain the load perturbation quickly and improve the dynamic performance of the system.
关键词
直驱式泵控系统 ;
频响 ;
串级控制 ;
参数优化
{{custom_keyword}} ;
Key words
direct drive pump control systems ;
frequency response ;
cascade control ;
parameter optimization
{{custom_keyword}} ;
基金
上海市科学技术委员会科研计划项目(11JC413000)
{{custom_fund}}
{{custom_sec.title}}
{{custom_sec.title}}
{{custom_sec.content}}
参考文献
[1] 刘庆和.直驱式液压传动[J].液压气动与密封,2011,(7):9-12.
[2] 霍志红,郑源,左潞,等.风力发电机组控制技术[M].北京:中国水利水电出版社,2012.
[3] 李昊,宋豫,孔祥东.风力机阀控液压马达变桨距位置控制系统仿真[J].系统仿真学报,2012,24(9):2019-2022.
[4] 孔屹刚,徐大林,顾浩,等.大型风力机液压变桨距机构建模分析[J].太阳能学报,2010,31(2):210-215.
[5] Jian-ming Zheng,Sheng-dun Zhao,Shu-guo Wei.Application of Self-tuning Fuzzy PID Controller for a SRM Direct Drive Volume Control Hydraulic Press[J].Control Engineering Practice (S0967-0661),2009,17(12):1398-1404.
[6] Chiang,M.H.,Wang,C.S.,Chen,C.S..Intelligent Pitch Control for a 2MW Wind Turbine[J].International Journal of Fuzzy Systems(S1562-2479),2012,14(1):89-96.
[7] 陈晨,李平康,段文伟,付俊杰.火电厂过热汽温串级PID的快速稳定优化[J].北京交通大学学报,2012,36(1):140-144.
[8] Jeng,J.C.,Lee,M.W..Simultaneous Automatic Tuning of Cascade Control Systems from Closed-loop Step Response Data[J].Journal of Process Control(S0959-1524),2012,22(6):1020-1033.
[9] Sivanandam SN.,Deepa SN..Genetic Algorithm Implementation Using Matlab[M].Spninger Berlin Heidelberg,2008:211-262.
[10] 许向勇,黄杰,李春雷,殷红成.区间分解优化的遗传算法及其在Internet环境下实现[J].系统工程与电子技术,2005,27(7):1288-1291.
{{custom_fnGroup.title_cn}}
脚注
{{custom_fn.content}}
PDF(960 KB)
