Application of Least Mean Square Algorithms to Spacecraft Vibration Compensation
This paper describes the application of the Least Mean Square (LMS) algorithm in tandem with the Filtered-X Least Mean Square algorithm for controlling a science instrument’s line-of-sight pointing. Pointing error is caused by a periodic disturbance and spacecraft vibration. A least mean square algo...
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| Veröffentlicht in: | The Journal of the astronautical sciences 1998-01, Vol.46 (1), p.83-90 |
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| container_title | The Journal of the astronautical sciences |
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| creator | Woodard, Stanley E. Nagchaudhuri, Abhijit |
| description | This paper describes the application of the Least Mean Square (LMS) algorithm in tandem with the Filtered-X Least Mean Square algorithm for controlling a science instrument’s line-of-sight pointing. Pointing error is caused by a periodic disturbance and spacecraft vibration. A least mean square algorithm is used on-orbit to produce the transfer function between the instrument’s servo-mechanism and error sensor. The result is a set of adaptive transversal filter weights tuned to the transfer function. The Filtered-X LMS algorithm, which is an extension of the LMS, tunes a set of transversal filter weights to the transfer function between the disturbance source and the servo-mechanism’s actuation signal. The servo-mechanism’s resulting actuation counters the disturbance response and thus maintains accurate science instrumental pointing. A simulation model of the Upper Atmosphere Research Satellite is used to demonstrate the algorithms. |
| doi_str_mv | 10.1007/BF03546194 |
| format | Article |
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| ispartof | The Journal of the astronautical sciences, 1998-01, Vol.46 (1), p.83-90 |
| issn | 0021-9142 2195-0571 |
| language | eng |
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| source | SpringerLink Journals |
| subjects | Actuation Actuators Adaptive filters Algorithms Computer simulation Control equipment Error analysis Least squares approximations Mean square values Servomechanisms Spacecraft Spacecraft vibration Transfer functions Transversal filters Upper atmosphere Vibration control |
| title | Application of Least Mean Square Algorithms to Spacecraft Vibration Compensation |
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