Allocation and optimization for performance indexes of the flight control system based on equivalent system matching

Performance parameters are the basis of a system design. The optimum performance of the subsystems not always assembles to obtain the optimum performance of the main system. So it´s necessary to allocate and optimize the index parameters. This paper firstly introduced definition of the index-allocator which was used to allocate the index parameters of the systems. And the nonlinear programming method was firstly used to allocate and optimize damping ratio and control bandwidth of the flight control system based on the low order equivalent system. In the meantime, the impact of the allocation results on the control accuracy was considered. Simulations verify that the allocation approach is reasonable and feasible.