Research On Channel Switching Strategy of Dual Redundant Flight Control System Under Finite Conditions

Abstract

Making dual redundant flight control system for unmanned aerial vehicles (UAV) as the research object, under the condition that the flight control computer and components can not meet the cross each other completely, proposes a computer mixed working mode based on the master-master/master-slave, and thus gives a improved design scheme of the redundant flight control system, gives a channel switching strategy of double redundant flight control system under limited condition. comparing mixed working mode with master-slave working mode by fault logic analysis and fault tree analysis, the result shows that the mixed computer working mode can realize channel switch in the flight control system reliably, and reduce the degradation speed of the system, At the same time, the damage of some fault modes to the system can be reduced.