摘要
随着我国卫星技术的发展 ,进一步提高卫星的可靠性和效率成为卫星技术发展的重要课题。其中有效负载和作为控制卫星姿态的动力的动量轮 /反作用飞轮是问题关键。在储能不变的前提下 ,飞轮应高速运行 ,以减少其重量和体积。因此飞轮的关键技术是轴承。文中就用于卫星飞轮的磁悬浮驱动技术的两种方案 ,即使用传统电机加磁悬浮轴承的方案以及使用无轴承电机的方案 ,详细介绍了国际上的研究现状及趋势 ,对比了两种技术 ,指出在未来的空间应用中 ,由于无轴承电机有着尺寸小、效率高的优点 ,因而更具有竞争力。
It is significant to improve the reliability and efficiency of satellite system furthermore in the satellite system design to match the development in satellite technology. The most important factors are the payload and the flywheels that can be classified into momentum wheel and reaction wheel and used to control the attitude of the satellite. Flywheels should run at high speed to reduce its weight and size. Therefore, the key technology is its bearing. This paper gives an overview of the two bearingless drive structures used in the satellite flywheels, structure of conventional motor levitated by magnetic bearing and structure of bearingless motor. Moreover, the present achievements and trend in the technology are discussed. It is pointed out that the later structure is more suitable for the space application where the space and weight are much concerned because it has higher energy per weight and is smaller than the former structure arter comparison.
出处
《微电机》
2003年第2期43-46,共4页
Micromotors
