Study on the kinetic control scheme of the single-sided linear induction motor i relation with its three dimensional force

对单边直线感应电动机的推力、法向力和侧向力进行了理论研究。推导了基于二维电磁场的解析公式，并证明了其有效性。从这些结果中，简化的一维模型是有用的，以获得其动力学控制方案。分析了直线电机与磁悬浮车轮系统的相互作用，并根据分析结果提出了灵敏度分析方法，采用恒转差频率控制方案，可以使磁悬浮车轮在加速过程中的法向力和侧向力得到足够的分散，但其转差应较大。从而降低了运行能效。讨论了效率和动态性能之间的协调。研究了直线感应电动机优化这些特性的设计方案，次级导轨的设计对侧向力也有影响。通过适当的尺寸和恒转差频率控制方案，该力可以补偿横向干扰力。通过仿真研究验证了该方案的正确性，并将理论计算结果与85年日本筑波世博会和86年加拿大温哥华世博会磁悬浮列车HSST-03的试验数据进行了比较。研究表明，理论分析和新的控制方案通过实际系统得到了验证。

The thrust force, normal force and side force given by the single-sided linear induction motor are studied theoretically. Their analytical formula based on the two dimensional electromagnetic field are derived and proved to be effective enough to design practical equipments. From these results a simlified one dimensional model is shown to be useful to derive its kinetic control scheme. The interaction between linear motor and magnetic suspension system of a magnetic wheel is analyzed and the sensitivity approach is introduced from the result.The normal and side force can be sppressed enough during the acceleration process with constant slip frequency control scheme, but its slip should be rather high. Then it reduces the operational energy efficiency. The compromize between efficiency and dynamic behaviour is discussed. The design scheme of linear induction motor to optimize these characteristics is also studied.The design of the secondary rail has also influences on the side force. With suitable dimensioning and the constant slip frequency control scheme the force could compensate the lateral disturbance force. Such scheme is verified with simulational studies.The theoretical results are compared with experimental data obtained by the test operation of a maglev transport HSST-03 in Tsukuba by EXPO'85 and in Vancouver by EXPO'86. The study shows that the theoretical analysis and the new control scheme is verified through the practical system.