电动汽车用永磁同步电机超前角弱磁控制

对控股股东股利分配行为的监管，是监管部门和控股股东之间的博弈过程。均衡分析发现，监管部门的监管成本C越小、控股股东进行侵占造成的外部损失W（ζ）越大，控股股东进行规范分配的概率越大；控股股东持股比例L越高、对控股股东违规处罚的力度K越大，监管部门监管的概率越小。

A Leading Angle Field Weakening Control Method for Permanent Magnet Synchronous Motor on Electric Vehicles

This paper presented a method of leading angle flux-weakening control for interior permanent magnet synchronous motor (IPMSM) on the electric vehicles, and achieved the purposes of high times, smooth and wide-speed operation and low cost of control systems. The control algorithm based on the utilization of inverter''s DC bus voltage determines the deviation degree of the rotor synchronization rotation angle by constructing a new index loop of voltage and achieves the purpose of extending the operation speed range. The transition of flux-weakening is smooth, and the algorithm of leading angle flux-weakening control has nothing with parameters and realizes the high-time flux-weakening control of IPMSM. It not only meets the requirements of wide speed operation, but also reduces the cost of the whole system. The effectiveness of the proposed control scheme is verified by computer simulation and experimental results.