自动化学报2007，Vol.33Issue(3)：273-278,6.
五自由度无轴承异步电机α-阶逆系统解耦控制
Decoupling Control of 5 Degrees of Freedom Bearingless Induction Motors Using α-th Order Inverse System Method
摘要
Abstract
A 5-degrees-of-freedom bearingless induction motor is a multi-variable, nonlinear and strong-coupled system. In order to achieve rotor suspension and operation steadily, it is necessary to realize dynamic decoupling control among torque and suspension forces. In the paper, a method based on α-th order inverse system theory is used to study dynamic decoupling control. Firstly, the working principles of a 3-degrses-of-frsedom magnetic bearing and a 2-degrees-of-freedom bearingiess induction motor are analyzed,the radial-axial force equations of 3-degrees-of-freedom magnetic bearing, the electromagnetic torque equation and radial force equations of the 2-degrees-of-freedom bearingless induction motor are given, and then the state equatious of the 5-degrees-of-freedom bearingless induction motor are set up. Secondly, the feasibility of decoupling control based on dynamic inverse theory is discussed in detail, and the state feedback linearization method is used to decouple and linearize the system. Finally, linear control system techniques are applied to these linearization subsystems to synthesize and simulate. The simulation results have shown that this kind of control strategy can realize dynamic decoupling control among torque and suspeusion forces of the 5-degrees-of-freedom bearingless induction motor, and that the control system has good dynamic and static performance.关键词
Bearingless induction motor/magnetic bearing/inverse system/feedback linearization/decoupling controlKey words
Bearingless induction motor/magnetic bearing/inverse system/feedback linearization/decoupling control分类
信息技术与安全科学引用本文复制引用
朱熀秋,周阳,李天博,刘贤兴..五自由度无轴承异步电机α-阶逆系统解耦控制[J].自动化学报,2007,33(3):273-278,6.基金项目
Supported by National Natural Science Foundation of P. R. China(50575099, 60674095) （50575099, 60674095）
