不完全情報をもつ適応飛行制御系の設計

抄録

The change of flight condition leads to the variation of aircraft's parameters. It can also vary the order of numerator in the pulse transfer function of such an aircraft. This means, in the discrete-time case, the change of the time delay. It is difficult under these circumstances to maintain the performance of the aircraft with conventional control methods. In this paper we propose, as an alternative scheme, an adaptive flight control system which can be used for the aircraft with unknown time delay and parameters. The proposed scheme has a desirable feature; by introducing a polynomial identity based on the upper bound on time delay, the control system can be synthesized simply in spite of unknown time delay as in standard model reference adaptive control system. Simulation studies are carried out for small-size high-performance aircraft to substanciate the analytical work.