Li G.,Beijing Institute of Control Engineering |
Li G.,Laboratory of Science and Technology on Space Intelligent Control |
Lu M.,Beijing Institute of Control Engineering |
Lu M.,Laboratory of Science and Technology on Space Intelligent Control |
And 6 more authors.
Guangxue Jingmi Gongcheng/Optics and Precision Engineering | Year: 2012
In order to satisfy the noise rule of a space station, denosing methods are proposed for a 1 000 Nms Control Momentum Gyroscope (CMG). The noise of 1 000 Nms CMG is tested and analyzed in detail. Base on the results of test and analysis, the feasibilities of denoising methods of optimization design, process control and acoustics measures are discussed. The denoising methods, such as the dynamic balancing of the rotor and the metal damper, are analyzed and their feasibilities and effectiveness are proved. Furthermore, the experiments indicate that the electromagnetic noise and the noise caused by the resonance of sealed cover can be reduced by the optimization design of 1 000 Nms CMG. The noises of medium and high frequency bands can be reduced by noise-absorption methods, and the noise of low frequency band can be reduced by acoustical enclosure. With these denoising methods, the noise of 1 000 Nms CMG has be controlled under 55 dB and satisfies the noise rule of the space station.