摘要
针对主动电磁轴承高速飞轮转子系统的振动抑制问题,提出一种模态分离–状态反馈内模控制算法。首先用模态分离对电磁轴承飞轮转子系统的平动模态与转动模态进行解耦,再用状态反馈对两个转动模态进行解耦,从而将电磁轴承飞轮转子系统原来互相耦合的四个自由度变换为四个彼此独立的自由度,最后采用内模控制器对解耦后的系统进行调节,以实现良好的控制性能。对模态分离–状态反馈内模控制系统的稳定性、目标跟踪性能及鲁棒性进行了理论分析,并通过仿真和实验进一步验证了该算法的有效性。结果表明:模态分离–状态反馈内模控制系统既实现了平动模态和转动模态的解耦,也实现了两个转动模态的解耦,能够使飞轮转子系统稳定悬浮并有效的抑制其振动,具有抗干扰能力较强、鲁棒性好、结构简单,调节方便等优点。
For the vibration suppression of active magnetic bearing （AMB）supporting high-speed flywheel rotor system, an internal control method based on modal separation and state feedback was presented. In the control method, the translational modes and conical modes of AMB flywheel-rotor system were decoupled by modal separation firstly, then the conical modes were further decoupled by state feedback, so that the AMB flywheel rotor system with four coupled degrees of freedom was transformed into a system with four independent single degrees of freedom. Finally, the system with four independent single degrees of freedom was regulated by internal model controller, to achieve good control performance. The stability, object tracking capability and robustness of the internal control system based on modal separation and state feedback were analyzed in theory, and its ability and effectiveness to control the vibration of AMB high-speed flywheel rotor system was further investigated by simulations and experiments. It is shown that the translational modes and conical modes are decoupled, and the two conical modes are also decoupled in the proposed control method. The control method proposed can achieve stable suspension and effectively suppress the vibration of AMB high-speed flywheel rotor system, and has the advantages of strong anti-interference, good robustness, simple structure, and easy regulation.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2017年第18期5461-5472,共12页
Proceedings of the CSEE
基金
国家自然科学基金项目(51477155
11172261)
浙江省自然科学基金项目(LZ13E070001)
先进航空发动机协同创新中心项目~~
关键词
电磁轴承
模态解耦
状态反馈
内模控制
飞轮储能
active magnetic bearing
modal decoupling
state feedback
internal model control
flywheel energy storage
