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A LONG LIFE, HIGH RELIABILITY AND HIGH ACCURACY INERTIAL ACTUATOR FOR SATELLITE ATTITUDE CONTROL SYSTEM
Author(s): 
Pages: 37-43
Year: Issue:  z2
Journal: CHINESE JOURNAL OF SPACE SCIENCE

Keyword:  卫星姿态控制系统-惯性执行机构-动量轮-整星零动量;
Abstract: 介绍一种由4个15 N.m.s动量轮组成的惯性执行机构.该机构动量轮特有的轴系及其润滑系统设计赋予机构长寿命、高可靠、高精度的特点.机构本身的冗余设计思想和四动量轮高速偏置工作并组成整星零动量的工作模式进一步提高了机构的可靠性和高的控制精度.本机构在"中-巴,,合作研制的"资源1号"卫星中使用取得了成功.卫星已在轨工作超过2年半,从末发生故障而且有望再工作一年以上.卫星指向精度优于0.1(°),指向速率稳定度优于0.001(°)/s.
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