摘要
为了抑制永磁同步电机存在的参数摄动、负载扰动等不确定因素对系统性能的影响,该文提出了一种将线性二次型(LQ)最优控制同H∞鲁棒控制相结合的鲁棒跟踪控制策略。H∞控制作为抗扰调节器,保证系统的鲁棒性能,克服系统中存在的模型不确定性与外部干扰对系统性能的影响;LQ最优控制作为跟随调节器可以保证系统的跟踪性能。仿真结果表明,设计的LQ-H∞混合控制器对参数摄动和负载扰动具有较强的鲁棒性,而且系统具有较强的跟踪性能。
To attenuate the perturbation of parameters and the load disturbances, a mixed control strategy for the aim of robust tracking control by combine the Linear Quadric （LQ） optimal control method with robust H∞ control method is proposed in this thesis. H∞ feedback controller is used as the regulator for depressing disturbances, to assure the system performance of robustness by overcoming the modeling uncertainties and disturbances from outside. LQ optimal controller serves as the regulator for tracking, which can guarantee the tracking performance. Simulation results show that the mixed LQ-H∞ controller has strong robustness to parameter changes and load disturbances, and strong tracking capability.
出处
《电气自动化》
2009年第4期15-17,共3页
Electrical Automation
关键词
永磁同步电机
H∞控制
线型二次型
最优控制
permanent magnet synchronous motor H∞ control linear quadric form optimal control
