长初级双边直线电机高性能控制策略  

High Performance Control Strategy for Long Primary Double Sided Linear Motors

作　　者：王江波[1,2] 李耀华[1] 严陆光[1] 

机构地区：[1]中国科学院电工研究所,北京100190 [2]中国科学院研究生院,北京100049

出　　处：《电工技术学报》2011年第5期126-131,共6页Transactions of China Electrotechnical Society

摘　　要：介绍了适用于电磁弹射的长初级双边直线电机,给出其在两相同步运动坐标系上的数学模型,建立了按次级磁场定向的矢量控制系统。针对由于动态纵向端部效应导致励磁电感变化使磁场定向遭到破坏和控制系统动态性能下降的问题,提出了采用动态纵向端部效应系数进行实时修正的解决办法。为了提高驱动系统的机械可靠性,提出一种采用新型自适应律的改进模型参考自适应系统进行速度辨识,实现了无速度传感器矢量控制。仿真及实验结果表明,提出的考虑动态纵向端部效应按次级磁场定向的控制策略具有良好的性能,采用新型自适应律的模型参考自适应辨识系统能在保证收敛速度的同时提高辨识系统的稳定性。This paper introduces long primary double sided linear motor for electromagnetic launch, gives its mathematical model on two-phase synchronous moving coordinate, and establishes secondary field oriented control system. Due to dynamic longitudinal end effect leading magnetizing inductance change causes the destruction of the magnetic field orientation and decline of control system dynamic performance. Using dynamic longitudinal end effect coefficient for real-time correction is presented to solve the problem. In order to improve the mechanical reliability of drive system, an improved model reference adaptive speed estimation system with new adaptation mechanism is proposed, and achieves speed sensorless vector control. Simulation and experimental results show the control strategy and speed estimation system is correct.

关 键 词：电磁弹射 长初级双边直线电机 动态纵向端部效应 次级磁场定向控制 模型参考自适应系统 

分 类 号：TM359.4[电气工程—电机]