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提出了抑制涡轴发动机负载干扰的线性二次型(LQ)/H∞控制算法,以总距为干扰建模,利用线性矩阵不等式求得既满足LQ指标又对干扰具有H∞性能约束的状态反馈控制律.提出修正指令抑制干扰策略.采用比例微分控制将总距变化转换为动力涡轮转速指令的修正,实现增大或减小机动飞行中动力涡轮转速指令,抑制实际转速的下垂或超调.仿真结果表明:该控制方法能有效抑制干扰并具有良好的实时性.
A linear quadratic (LQ) / H ∞ control algorithm was proposed to suppress the turbocharged load of turboshaft engine. The total distance was used as the interference model. The linear matrix inequality (LMI) was used to determine the state of LQ / H∞ constraint that satisfied both LQ and disturbance Feedback control law is proposed to modify the command to suppress the interference strategy.Adopting the proportional and differential control to convert the total distance variation into the correction of the power turbine speed command to realize the increase or decrease of the power turbine speed command in the maneuver flight and to suppress the sag or overshoot of the actual speed The simulation results show that this control method can effectively suppress the interference and has good real-time performance.