【摘要】 针对航向静不稳定飞行器横航向强耦合的特点,文章研究其横航向增稳控制方法。首先建立航向静不稳定飞行器的横航向耦合数学模型;之后针对常规LQR(线性二次型调节器)控制器存在稳态误差以及侧滑角不易测量的问题,利用准增广LQR方法设计了横航向增稳控制回路;最后进行了飞行器跟踪不同指令时的弹道仿真。仿真结果表明,本文所提增稳回路设计方法能够使得航向静不稳定飞行器实现输入指令的无静差跟踪,而且响应过程无超调、调节时间短。更多还原

【Abstract】 Aiming at the characteristics of strong coupling between lateral and heading of heading statically unstable aircraft, the control method of lateral and heading stabilization was studied in this paper. Firstly, a lateral-heading coupling mathematical model of the course-statically unstable aircraft was established. Then, aiming at the steady-state error of the conventional LQR controller and the difficulty of measuring the sideslip angle, a quasi-augmented LQR method was used to design the lateral-heading stabilization control loop.Finally, the trajectory simulation of the aircraft tracking under different commands was carried out. Simulation results show that the method of stabilization loop design in this paper can make the course statically unstable aircraft achieve no static error tracking of input commands,and the response process is not overshoot, and the adjustment time is short.更多还原