【摘 要】
：
针对LQG/LTR飞行控制律设计中加权矩阵的选取问题,提出了一种基于闭环准则的LQG/LTR飞行控制律优化设计方法。以俯仰姿态控制律优化设计为例,首先基于闭环准则选取了满足一级
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针对LQG/LTR飞行控制律设计中加权矩阵的选取问题,提出了一种基于闭环准则的LQG/LTR飞行控制律优化设计方法。以俯仰姿态控制律优化设计为例,首先基于闭环准则选取了满足一级飞行品质要求的参考模型,并基于该参考模型使用粒子群优化算法优化得到了两个加权矩阵,从而得到了卡尔曼滤波器和相应的目标反馈回路。进而借鉴飞机等效系统拟配的方法,优化得到了另两个加权矩阵,从而得到了LQG最优控制器,完成了回路传递恢复的优化设计。仿真结果表明,通过该方法能够快速自动地选取合适的加权矩阵,使得优化设计的LQG/LTR飞行控制律较好地满足了俯仰姿态控制的要求。
Aiming at the selection of weighting matrix in the design of LQG / LTR flight control law, an optimization design method of LQG / LTR flight control law based on closed-loop criterion is proposed. Taking pitch attitude control law optimization design as an example, a reference model that meets the first-grade flight quality is selected based on the closed loop criterion. Two weighting matrices are optimized based on the reference model and the particle swarm optimization algorithm is used to obtain the Kalman filter And the corresponding target feedback loop. Then the method of the equivalent system of aircraft is used to draw the other two weighted matrices. The optimal controller of LQG is obtained, and the optimized design of loop transfer recovery is completed. The simulation results show that the LQG / LTR flight control law can well meet the requirements of pitch attitude control by using this method to select appropriate weight matrix quickly and automatically.
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