Attitude control of a satellite with redundant thrusters
| Autor: | Min-Jea Tahk, Bong-Kyu Park, Young-Woong Park, Jae-Hyun Jin |
|---|---|
| Rok vydání: | 2006 |
| Předmět: |
Engineering
Variables Linear programming Computer simulation business.industry media_common.quotation_subject Computation Constrained optimization Aerospace Engineering Control engineering Attitude control Control theory Physics::Space Physics Fuel efficiency Redundancy (engineering) business media_common |
| Zdroj: | Aerospace Science and Technology. 10:644-651 |
| ISSN: | 1270-9638 |
| DOI: | 10.1016/j.ast.2006.04.005 |
| Popis: | Redundant thrusters are generally used for a reliable attitude control system. Also, redundant thrusters yield a better performance if they are used appropriately. In this paper, the authors propose an efficient redundancy management algorithm to reduce the fuel consumption. The algorithm is based on a linear programming problem which is a constrained optimization problem. For the algorithm, a cost function is defined as a quantity related to the fuel consumption for a maneuver. The independent variables are the thrusters' on-times which are control input variables of a satellite dynamic model. The advantage of the proposed method is verified by numerical examples. The examples show that the proposed method consumes less fuel than an existing method for a given maneuvering command. A sub-optimal algorithm is also discussed for an onboard computation. The proposed algorithm is applied to two maneuvers: move-to-rest and rest-to-rest. This is verified by a numerical simulation. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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