弹道修正弹对转磁力矩电机机理分析建模

Mechanism Analysis Modeling of Counter-Rotating-Structure Permanent Magnet Torque Motor for Trajectory Correction Projectile

为了设计弹道修正控制算法,需要准确建立对转磁力矩电机的数学模型。根据对转磁力矩电机与普通永磁无刷电机的区别,采用机理分析的方法对转磁力矩电机本体、三相逆变器和位置解码器进行了分析建模,得到了对转磁力矩电机系统的数学模型。为了验证模型的准确性,基于Simulink平台搭建了系统仿真模型,并对电机从起动至转速稳定这一过程进行了仿真。仿真结果表明,所建立的对转磁力矩电机数学模型准确,为磁力矩电机的性能和修正控制算法的研究提供了工具。

In order to design the trajectory correction algorithm,an accurate mathematical model of counter-rotating-structure permanent magnet torque motor（CRSPMTM） is required. Taking the difference between CRSPMTM and common permanent magnet motor into consideration,mechanism analysis method was used to build mathematical models of magnetic torque motor body,three-phase inverter and position decoder,and the system mathematical model was given. In order to verify the accuracy of the model,simulation was conducted based on simulink for the process from motor start to speed stabilized. The simulation results show that the mathematical model is accurate,which provides a tool for study of the CRSPMTM performance and trajectory correction algorithm.