Feedback Linearization and Decoupling Control of Induction Motors
-
摘要: 针对感应电机复杂耦合非线性模型,通过将转子磁链设置为Φ=φrα2+φrβ2,提出了新的控制策略,将感应电机转子磁链与转子速度解耦,成为两个独立的线性子系统,实现两者完全线性化,可用线性系统的二次最优化理论求解,设计的控制率没有奇异点问题,保证了转子磁链、转速及负载转矩的渐进跟踪.仿真验证了该方案的有效性.当转子转速变化时,转子磁链不会改变,实现了两者解耦,使系统具有良好的动静态性能.Abstract: A new control strategy was proposed to decouple magnetic flux linkage in the rotor from speed into two independent linear subsystems, namely,Φ=φrα2+φrβ2, The decoupled system can be solved with the linear quadratic optimal control theory.The designed control law is globally defined without singularity, ensuring asymptotically tracking the magnetic flux linkage in the rotor, speed, and torque.A simulation example demonstrates the feasibility of the proposed strategy.In the simulation, the magnetic flux linkage keeps constant while the rotor speed changes, and the system shows good dynamic and static performances.
-
李永东.交流电机数字控制系统[M].北京:机械工业出版社,2002:177-201.[2] MARINO R,PERESADA S,VALIGI P.Adaptive input-output linearizing control of induction motors[J].IEEE Trans.Automatic Control,1993,38 (2):208-221.[3] 刘国海,戴先中.感应电动机调速系统的解耦控制[J].电工技术学报,2001,16(5):30-34.LIU Guohai,DAI Xianzhong.Input-output adaptive decoupling control of induction motors[J].Transactions of China Electrotechnical Society,2002,17(1):12-16.[4] 张春朋,林飞,宋文超,等.基于直接反馈线性化的异步电动机非线性控制[J].中国电机工程学报,2003,23(2):99-102.ZHANG Chunpeng,LIN Fei,SONG Wenchao,et al.Nonlinear control of induction motors based on direct feedback linearization[J].Proceedings of the CSEE,2003,23(2):99-102.[5] WANG Huangang,XU Wenli.Robust input-output decoupling control for induction notors[C]// Proceedings of the 2004 American Control Conference (ACC).Boston:[s.n.] ,2004:1 133-1 134.[6] WANG Huangang,XU Wenli.Stator flux and torque decoupling control for induction motors with resistances adaptation[J].IEE Proceedings:Control Theory and Applications,2005:363-370.[7] 肖建.现代控制系统综合与设计[M].北京:中国铁道出版社,2000:173-196. -
点击查看大图
计量
- 文章访问数: 1378
- HTML全文浏览量: 48
- PDF下载量: 370
- 被引次数: 0
下载: