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This paper proposed the design of altitude hold control law based on H? robust control method. Firstly, the airplane vertical linear model with a few unknown parameters was obtained after linear small perturbation analysis was made on the 6-dof plane nonlinear model. Secondly, the parameter identification was carried out on the new model by the genetic algorithm, and an approximate vertical kinematics equations of the aircraft was achieved.Finally, the altitude hold control law which is based on H? robust control method was designed. The experimental results show that the proposed control law can hold altitude effectively.

KEYWORDS

altitude hold; genetic algorithms; system identification; H? robust control; control law

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Autor: Jiangkang Dong, Yanqing Mu

Fuente: http://www.scirp.org/



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