摘要
针对磁悬浮飞轮储能中同频扰动抑制问题,建立了磁轴承转子系统数学模型,讨论了以电磁力作为控制量进行控制器设计的可行性和优越性,并从系统能量函数角度出发,提出了一种以电磁力作为控制量的集中式同频扰动抑制算法。在以电磁力作为控制量的基础上,将线性扩张状态观测器与集中式四自由度状态反馈控制器相结合,并通过李雅普诺夫定理验证了系统稳定性,使得控制算法能够对同频扰动进行主动观测和补偿。仿真结果表明该算法在宽转速范围内对于同频扰动的抑制具有明显效果。
Aiming at the problem of co-channel interference caused by mass imbalance in active magnetic bearings,a mathematical model of magnetic bearing rotor system was established.The feasibility and superiority of using electromagnetic force as control quantity in controller design were discussed.From the energy point of view,a novel centralized controller was proposed and the stability of the system was verified by Lyapunov theorem.Based on the new design method,a 4-DOF state-feedback controller was designed,combined with linear extended state observer.The control algorithm can actively estimate the co-channel interference and provide compensationsynchronously.Comparative simulation results indicate that the combined control algorithm has obvious effect on suppressing the co-channel interference in large speed range.
作者
张灵修
张广明
欧阳慧珉
ZHANG Lingxiu;ZHANG Guangming;OUYANG Huimin(College of Electrical Engineering and Control Science,Nanjing Tech University,Nanjing 211816,China)
出处
《微电机》
2022年第2期76-80,共5页
Micromotors
基金
国家自然科学基金(61703202)
江苏省重点研发计划(BE2017164)。
关键词
磁轴承
同频扰动
集中控制器
状态反馈控制
扩张状态观测器
magnetic bearing
co-channel interference
centralized controller
state-feedback control
extended state observer
