摘要
针对液压变压器流量控制问题,提出采用分数阶PID控制器对配流盘的位置进行精确控制.针对分数阶PID参数整定复杂性问题,提出了一种混合时频域性能要求的多目标参数整定策略,结合一种自适应差分进化算法实现了参数的最优整定,最后通过数值仿真以考察所提方法.时域分析结果表明:该控制策略明显优于传统的PID、模糊及模糊PID控制策略;频域分析结果表明:该伺服系统具有较强的鲁棒性及稳态保持性.验证了基于分数阶PID控制器实现配流盘位置控制的可行性和优越性.
Aiming at the flow control of hydraulic transformer, the fractional order proportion, integration and differentiation （FOPID） controller is proposed to control the position of the value plate. To optimally determine the parameters of the FOPID controller, a novel multi-objective-based parameter tuning strategy considering time domain and frequency domain requirements of the servo system is proposed. A type of self-adapting differential evolution algorithm is employed to obtain the parameters. Finally, the proposed method is numerically simulated. The time domain analysis results show that this control strategy is obviously superior to the conventional PID, FLC, and fuzzy-PID control strategy. Meanwhile, the frequency domain analysis results show that the servo system is of high robustness and can remain in the steady state. The simulation results show that the FOPID controller and the corresponding parameter turning strategy are efficient and of high performances for the position control of the value plant.
出处
《北京工业大学学报》
CAS
CSCD
北大核心
2013年第10期1452-1458,共7页
Journal of Beijing University of Technology
基金
国家863计划资助项目(2009AA044403)
关键词
液压变压器
配流盘
分数阶PID
参数整定
hydraulic transformer
value plant
fractional order PID
parameters tuning
