引用本文: | 赵 君,刘卫国,张文婧.永磁同步交流牵引系统LQG/LTR控制研究[J].电力自动化设备,2012,32(7): |
| ZHAO Jun,LIU Weiguo,ZHANG Wenjing.LQG/LTR controller for PMSM traction system[J].Electric Power Automation Equipment,2012,32(7): |
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摘要: |
针对永磁同步交流牵引系统运行过程中存在参数扰动及传感器量测噪声的影响,采用线性二次高斯/回路传输恢复(LQG/LTR)鲁棒控制技术,设计了基于LQG的系统控制器,通过LTR技术优化系统控制器设计,完成参数扰动时的控制性能仿真。仿真结果表明,在参数扰动 ±5 % 时,系统具有较强的鲁棒性。提出了基于 DSP平台的永磁同步交流牵引LQG/LTR控制系统实现方案。试验结果表明,在系统噪声和测量噪声存在的情况下,使用LQG/LTR控制器的交流永磁同步交流牵引系统,比使用传统的PID控制系统具有更好的动态响应及鲁棒性。 |
关键词: 永磁 同步电机 牵引系统 LQG/LTR 鲁棒控制 DSP |
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基金项目:国家自然科学基金重大研究计划面上项目(51177135) |
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LQG/LTR controller for PMSM traction system |
ZHAO Jun, LIU Weiguo, ZHANG Wenjing
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College of Automation,Northwest Polytechnical University,Xi’an 710072,China
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Abstract: |
The LQG(Linear Quadratic Gauss)- based system controller is designed for the PMSM(Permanent Magnet Synchronous Motor) traction system,which applies the LQG/LTR robust control to suppress the influences of parameter disturbance and sensor measurement noise. The LTR(Loop Transfer Recovery) method is used to complete the control performance simulation during parameter disturbance in the optimal design of system controller. Simulative results show that,the system controller has better robustness when parameters vibrate within ±5 %. The LQG/LTR control system based on DSP platform is designed. Test results show that,with system and measurement noises,the PMSM traction system with LQG/LTR controller has better dynamic performance and robustness than that with PID controller. |
Key words: permanent magnets synchronous motors traction system LQG/LTR robust control DSP |