摘要
根据永磁悬浮磁力驱动装置的磁势周期性变化规律,结合其特有的结构,在保证提供的悬浮力满足实验条件的基础上,以装置中电机轴上的扭矩趋于零作为优化设计的目的,对该永磁悬浮磁力驱动装置进行结构上的优化设计,建立了优化后装置的仿真模型,并采用有限元方法计算不同优化条件下,磁力驱动装置的零功率特性及驱动力特性。对比分析结果表明:经过两次优化设计后的装置与原装置相比,负载转矩明显减小,已经达到了零功率特性优化设计的要求。
The magnetic driving device using permanent magnetic suspension has unique structure,w hich leads to produce the regularity of the magnetic potential. Based on the assumption that the levitation force satisfies the experimental conditions,the goal of the optimization design is that the torque on the motor shaft tends to zero. In order to reduce the load torque on the motor shaft,to improve its w orking efficiency,to reduce the pow er consumption effect,zero pow er permanent magnet suspension system w ith flux path control is carried out,and the simulation model of the optimized device is established in this paper. The zero pow er performance and driving force performance of the magnetic device are analyzed by finite element method,and by analyzing the movement and the forces of the device,dynamic model and spatial expression of the device are established. In order to study the dynamic response of the system under disturbances and verify the reliability and robustness of the system,the system is controlled by cascade control. The inner loop adopts PD regulator,and the outer loop adopts PID regulator. Simulation analysis show that the load torque is obviously reduced compared w ith the original device,new device has reached the requirement of zero pow er performance optimization design,and the system can be stably suspended after a brief adjustment under disturbances.
出处
《组合机床与自动化加工技术》
北大核心
2017年第10期27-29,33,共4页
Modular Machine Tool & Automatic Manufacturing Technique
基金
国家自然科学基金(51105257
51310105025)
辽宁省高等学校杰出青年学者成长计划(LQJ2014012)
中国博士后科学基金(2015M571327)
十二五国家科技支撑计划(2015BAH47F02)
关键词
零功率
永磁悬浮
有限元分析
zero pow er
permanent magnetic suspension
finite element analysis
