摘要
针对传统全阶磁链观测器随内、外扰动导致磁链估测精度不高甚至系统不稳定的问题,对观测器极点分布情况和内、外扰动对系统的影响进行研究分析,从而对反馈矩阵增益系数的取值进行设计,提出了一种鲁棒自适应状态观测器对磁链进行估计。当遇到内、外扰动时,在保持系统稳定的情况下自动减小反馈增益系数以减小扰动对系统的影响,从而保持系统良好的动静态性能。在内、外扰动下,将鲁棒自适应状态观测器与传统的全阶磁链观测器的磁链估计精度、转速波动以及转矩波动进行比较分析。仿真和试验结果表明:鲁棒自适应状态观测器具有比传统全阶磁链观测器更好的抗干扰性能。
Aiming at the problem that traditional full-order flux observer led to the inaccuracy of the flux linkage and even the instability of the system under internal and external disturbances, the influences of the observer pole distribution and the internal or external disturbances were analyzed. Then the feedback gain matrix coefficient was designed, and a robust adaptive state observer was proposed to estimate the flux linkage. When the system was influenced by the internal or external disturbances, in order to maintain the system’s good dynamic and static performance, the feedback gain coefficient was automatically reduced while maintaining the stability of the system. The flux estimation accuracy, speed fluctuation and torque ripple under internal and external disturbances were compared between the robust adaptive state observer and traditional full-order flux observer. Simulation and experimental results showed that the robust adaptive state observer had better anti-jamming performance than traditional full-order flux observer.
作者
许小龙
曾岳南
王发良
谢传林
沈志峰
XU Xiaolong;ZENG Yuenan;WANG Faliang;XIE Chuanlin;SHEN Zhifeng(School of Automation, Guangdong University of Technology, Guangzhou 510006, China)
出处
《电机与控制应用》
2018年第12期40-45,共6页
Electric machines & control application
关键词
鲁棒自适应状态观测器
磁链估计
扰动
抗干扰性能
robust adaptive state observer
flux estimation
perturbation
anti-jamming performance
