Abstract: With regard to the difficulty of cooperating deflection and the easiness of running into saturation for overactuated aircraft, two optimal antiwindup weighted control allocation schemes are proposed based on the dimensional optimization of weight coefficients. After researching the principle of weighted pseudoinverse and mixed optimization methods, both their uniform control law and mutual optimization characteristics are obtained. The Lyapunov function is defined by taking the actual deflection errors as variables. To ensure the system stability, the linear matrix inequality is deduced by solving the gradient of control errors. Through minimizing the variation of weight coefficients, the optimal antiwindup weighted control allocation model is established. The simulation result shows that proposed control scheme not only can track the mainloop virtual control instruments accurately, but also can adjust the weight coefficients of surfaces under saturated state fast to achieve the antiwindup control.

Key words: overactuated aircraft, weighted control allocation, antiwindup control, weight coefficients variatio