空间微重力磁悬浮平台激励器研究

为满足空间实验室的科学实验载荷对微重力环境水平的要求,需要保证空间微重力实验载荷平台的振动隔离性能,即需要平台激励器能在控制系统的作用下适时地产生抑制平台扰动的激励力.本文提出了平台激励器的初步指标,从磁悬浮基本原理出发设计出多种结构形式,在此结构基础上完成有限元磁路仿真和激励器的线圈设计,并对各种结构形式进行比较,根据比较结果总结出各结构形式的优缺点,为激励器的具体设计提供了依据.

Study on Actuators of Magnetic Suspension Platform Under Microgravity Environment in Space

To fulfill the microgravity level of scientific experiment payloads in space lab,vibration isolation performance of platform with experiment payloads is required.And the actuator of platform under control needs to produce active force timely to restrain the vibration of platform.This paper firstly presents the elementary parameters of actuator.Various structural forms are designed,based on the theory of magnetic suspension.Finite element simulations about magnetic circuit and coil design of the actuator are given based on various forms.To provide basis for the detailed design of actuator,the strong points and shortcomings of each form are concluded through comparisons.The parameters for comparisons mainly involve the mass,the air gap,the maximum force,the current density,the supply power,and the bandwidth of the actuator.The result of comparisons shows that each form is available due to different working conditions and system demands.