无轴承薄片电机系统被动悬浮特性的研究

Characteristics of Passive Suspension in the Bearingless Slice Motor System

以应用于超洁净领域的新型无轴承薄片电机为研究对象。首先运用刚体动力学和陀螺力学原理,建立了无轴承薄片电机系统被动悬浮(即轴向扭转方向上)两自由度的转子动力学模型,然后采用Matlab软件的Simulink模块对所建模型进行了动力学仿真分析,研究了系统在不同阻尼情况、不同扭转力拒函数以及不同刚度和阻尼系数下被动悬浮的稳定性,结论是当回复扭矩与扭转角呈三次方关系时的流体阻尼情况下,系统稳定性最佳,而后给出扭转刚度系数和阻尼刚度系数的稳定域。其结果为被动悬浮的可实现性提供了理论保证,对电机本体的设计和优化具有指导意义,有利于无轴承薄片电机的推广应用。

A dynamic model of passive suspension in the the principles of geostatics and mechanics of gyroscope. bearingless slice motor system is developed, based on MATLAB Simulink is used to make a dynamic simulation analysis of this model, with the insight into the stability of the system with different damps, different functions and different parameters. The conclusion can be reached that the system will have the best stability when the torque is the cube of the torque angle. The stability values of the torsion parameter and the damp parameter are also presented. These results provide theoretical basis for the realization of passive suspension, and have guidance for the design and the optimization of motors, thus being of great benefits to the applications of bearinglesss slice motors.