Abstract:

To make full use of the control surfaces’ redundancy in multi-effector flight control system, a mixed control allocation scheme revising the weight matrix adaptively is presented. Subject to the actuator rate and position constraints, the mathematical model of multi object control allocation is built. The weight is adaptively adjusted along the decreasing direction of the gradient so as to change the control command, then the optimal target is obtained, which ensures the tracking efficiency of virtual controls. The equivalent model is proved and the update law of the weight matrix is deduced. Simulation shows that the proposed method can consider the physical constraints and control efficiencies, create the optimal control command and avoid the chattering of effectors.