Analysis and testing of microvibration produced by control moment gyroscope in multi-platform

When the satellites' CMG (Control Moment Gyroscope) generate the control moment, they will also generate the periodic and broadband disturbance vibration force, and will have a greater impact on the performance of instruments with high pointing precision and stability. This paper analyze a large CMG of 70Nms belonging to a remote sensing satellite, its feature is the mass of moving parts. So when it is installed to the test table that we designed independently, the fundamental frequency of the system as a whole will significantly reduce. Based on past study the purpose of this paper is mainly focused on the testing techniques of the heavy moving parts, and the technical method to isolate the test table's stiffness from test results.