Title :
Robust controller design with genetic algorithm for flexible spacecraft
Author :
Ge, S.S. ; Lee, T.H. ; Hong, F.
Author_Institution :
Dept. of Electr. & Comput. Eng., Nat. Univ. of Singapore, Singapore
Abstract :
A class of energy-based position controllers for a kind of flexible spacecraft is proposed. Closed-loop stability of the original distributed parameter system can be achieved, as well as asymptotic stability for the truncated system, which is obtained through representing the deflection of the appendage by an arbitrary finite number of flexible modes. The feedback gains of the controller are tuned by a genetic algorithm (GA) optimization process to achieve good results for tip motion based on some suitable fitness functions. Numerical simulations are carried out on a kind of spacecraft with one flexible appendage, and satisfactory results are obtained
Keywords :
aerospace control; asymptotic stability; closed loop systems; control system synthesis; distributed parameter systems; feedback; flexible structures; genetic algorithms; numerical analysis; optimal control; position control; robust control; tuning; appendage deflection; asymptotic stability; closed-loop stability; controller feedback gain tuning; distributed parameter system; energy-based position controllers; fitness functions; flexible appendage; flexible modes; flexible spacecraft; genetic algorithm; numerical simulation; robust controller design; tip motion; truncated system; Algorithm design and analysis; Asymptotic stability; Control systems; Design optimization; Genetic algorithms; Motion control; Optimal control; Robust control; Space vehicles; Vibration control;
Conference_Titel :
Evolutionary Computation, 2001. Proceedings of the 2001 Congress on
Conference_Location :
Seoul
Print_ISBN :
0-7803-6657-3
DOI :
10.1109/CEC.2001.934304
