Design of a robust adaptive reconfigurable flight control system using multiple controllers

Aim. Boskovic et al dealt with the same problem in their paper^[5] but, in our opinion, their design of the multiple controllers used was too simple and thus inadequate. We, in this paper, dwell on the proper design of these controllers. When actuator failures occur, sharp jumps of parameters cannot be handled by ordinary design. We, in this paper, have to adopt special design techniques using multi-models. In the full paper, we explain our special design in detail; in this abstract, we just add some pertinent remarks to listing the three topics of explanation; (1) the description of problem, (2) multi-model adaptive reconfigurable techniques, and (3) the design of robust tracking controllers; in topic 2, we give Fig.1 in the full paper which outlines our special design strategy; the two subtopics of topic 2 are the establishment of multi-models and switch conditions (subtopic 2.1) and the analysis of stability (subtopic 2.2); in subtopic 2.2, based on the book written by Wang et al^[1], we explain how all the controllers can have dynamic performances that are very similar; in topic 3, we point out that eq.(12) in the full paper ensures that the controllers designed have satisfactory tracking control performance. Finally we took the longitudinal motion of a certain aircraft as example and performed simulations, whose results are given in Figs.2, 3, and 4 in the full paper. These results show preliminarily that our special design strategy does ensure that the aircraft in our example have good performance in the presence of control surface failures.