采用非线性系统扩展线性化方法设计飞控系统

 利用非线性系统的扩展线性化方法设计具有大迎角的非线性飞行控制系统。在系统的静态平衡点族上进行线化及调节器设计并直接积分得到非线性控制律,同时利用等效系统法验证飞行品质。整个设计过程较简便,控制律便于实现,飞机的失速迎角有较大提高,飞行品质也是令人满意的。

FLIGHT CONTROL DESIGN USING EXTENDED LINEARIZATION OF NONLINEAR SYSTEMS

The extended linearization of nonlinear systems is used to design flight control systems at high angle of attack. The dynamic system is linearized at all constant operating points: the linearized system is assigned the same poles and a nonlinear control law is obtained by the integration of the linear feedback gain matrix. The closed loop handling quality is evaluated by the equivalent system method. The simulation shows that the stall angle of attack of the aircraft is increased and the handling quality is satisfactory.