Helicopter Explicit Model Following Control And Control Law Optimization

The helicopter control system directly impact the flight performance, reliabilityies and mission effectiveness, and the flying qualities level. Therefore, helicopter flight control system design is the key technology to be solved at home and abroad.Firstly, according to the latest military helicopter flying qualities specification ADS-33E-PRF index requirements, a mathematical model which was the basis of explicit model was developed to express bandwidth and phase delay. Secondely, classical explicit model following control and inverse-based model following control were study. Both methods can be applied to design helicopter flight control law, but inverse-based model following control have greater advantages to optimize its control law parameter. Thirdly, inverse-based model following control is used, then SQP method was adopted to optimize control parameter. Numerical simulation was conducted in Matlab / Simulink. The result shows that system bandwidth and performance were improed dramatically. Finally, control law design and optimization software was developed in MATLAB.The research methods described in this paper provide a theoretical basis for the helicopter model tracking control system design and optimization.