Research and Design of the Control Law of Passive Side-Stick System with Human Factor Fault

Abstract

Abstract For modern commercial civil aircraft, failure tolerant control (FTC) method is the basic strategy. Human factor fault is becoming more and more important for the design of the active control technology for the electrical flight control system or fly-by-wire system (EFCS or FBW). This paper focuses on the problem caused by the human factor with passive side-stick equipment. A new design concept was proposed based on the Boeing and Airbus experience and a control law of feedforward structure with alarm functions was designed in MATLAB\simulink. The functions were tested in a flight simulation platform in a desktop simulator based on the open-loop dynamic model. The results showed that each part of the control law worked well and the functions were effective. The human factor failure problem of dual inputs was well solved. The work provided a reference for the designer in the civil aviation field especially for those of the developing modern commercial aircrafts.