속도 오차 외란이 반작용 휠 제어에 미치는 영향에 관한 실험적 연구

• Published in: 항공우주시스템공학회지 Vol. 10; no. 1; pp. 95 - 102
• Main Authors: 김지철(Jichul Kim), 이형준(Hyungjun Lee), 유지훈(Jihoon Yoo), 오화석(Hwasuk Oh)
• Format: Journal Article
• Language: Korean
• Published: 항공우주시스템공학회 2016
• Subjects: Speed Error Disturbance; Disturbance Generator; Reaction Wheel
• ISSN: 1976-6300; 2508-7150

There are many possible disturbance sources on such a spacecraft, but reaction wheel assembly (RWA) which is generally used for spacecraft attitude control is anticipated to be the largest. These effects on degradation of performance of spacecraft such as attitude stability. In reaction wheel, disturbance caused by imbalance and speed error. It is hard to emulate speed error disturbance because it is not coincide with wheel frequency. This paper concentrates on emulating and analyzing the speed error disturbance. Firstly, classify the causes that lead to speed error disturbance which generate RPM fluctuation. Secondly, simulated with disturbance driver module and reaction wheel assembly which are developed by Spacecraft Control Lab. Experimental investigations have been carried out to test the disturbance emulator module as a disturbance generator for RWA. Measurements and test have been conducted on various fault. Frequency analysis of test data show that speed error disturbance effects on wheel settling wheel speed or fluctuation type.