宽温区双初级圆筒型永磁直线同步电机系统的研究

As the development of the electric actuator technology in aerospace, the linear motor system in a wide temperature change environment is required. Nowadays, the conventional motor theory is usually used to guide the design of the motor of the electric actuator in the extreme environment. To ensure the reliability, the volumes and masses are enlarged and the rating powers are reduced. This method results in that the linear motor in the electric actuator is with the low thrust and small thrust density. .This project will carry out the research on a tubular permanent magnet linear synchronous motor (TPMLSM) with double primaries in a wide temperature change environment. The circular composite phase belt winding structure of the double primaries was proposed, and the operating law and working performance of the double primaries TPMLSM in the wide temperature change environment will be researched and revealed. The technology that the electrical load matches the magnetic load will be researched, and the comprehensive optimization method for the motor system will be focused on. The temperature calculation model based on the correcting of the heat transfer coefficients will be established, and then the temperature rise and thermal failure will be analyzed. The model considering the inductance asymmetry and parameter perturbation will be established, and the control strategy integrating the thrust compensation and anti-interference ability will be researched. At last, the prototype system will be tested and verified. Through the above research, it is expected to develop the theory of the permanent magnet linear synchronous motor in the wide temperature environment, and improve the thrust, thrust density and reliability of the electric actuator adopting the permanent magnet linear synchronous motor . And the relative research conclusion also can be used to guide the design and application of the motor in other extreme environment.

航空航天电动执行机构技术的发展对宽温区环境下永磁直线电机系统提出需求。已有的极端环境下电动执行机构电机系统，普遍采用常规电机设计方法，通过放大电机的体积质量或降额使用来保证系统可靠性。这种做法使电机存在推力小、推力密度低的问题。.本项目开展宽温区双初级圆筒型永磁直线同步电机系统研究：提出圆环形双初级复合相带绕组拓扑，揭示宽温区环境下电机的运行规律和工作特性；研究宽温区电机的电磁负荷匹配技术及综合设计方法；建立基于传热系数校正的准确电机温升计算模型，获得电机温升和热失效机理；建立考虑电感不对称和参数摄动的电机数学模型，形成综合推力补偿和自抗扰的控制策略。最后进行高低温环境下样机系统测试验证。通过上述研究形成宽温区永磁直线电机系统的理论，提高基于永磁直线同步电机的电动执行机构系统的推力、推力密度及可靠性。相关研究结论也可用于指导其它恶劣环境下直线电机系统的设计应用。

本项目开展宽温区环境下双初级圆筒型永磁同步直线电机（DP-TPMSLM）相关研究，主要获得极端环境下此类电机的电磁设计、多目标优化设计及驱动控制相关方法理论，以提升电机的可靠性和推力密度。.完成的主要研究工作如下：研究揭示了内外初级磁耦合效应对电感、定位力、推力的影响规律；研究获得了基于脉振磁场的电机柔性分段模块化设计，有效减小电机的边端定位力；分析宽温区环境下电机材料电磁及应力特性，研究揭示宽温区环境温度对电机输出推力特性的影响规律，并提出复合凸型磁极结构，提高了宽温区环境下电机推力的稳定性；研究揭示了不同外径条件下内初级和外初级电机推力占比规律，为不同应用中选取电机拓扑提供了依据；改进了绕组等效导热模型，基于三维温升模型计算获得了不同电磁负荷下电机的温升规律；研究形成了基于神经网络代理模型的电机多目标优化设计方法，实现了电磁和热特性相关参数的综合优化设计；建立了考虑电感不对称的宽温区DP-TPMLSM数学模型，研究了内外扰动的离在线观测及补偿控制策略，提高了电机的控制精度和抗扰性能。研制了样机，搭建了静动态测试平台，为此类电机的实验研究提供了参考。.基于本项目研究，发表论文12篇（其中SCI收录9篇），申请国家发明专利22项，已获授权10项，培养研究生10名（已毕业4名）。