文中在给出了固定增益的控制增稳系统的基本组成之后，着重介绍自动驾驶仪的参数选择特点及其对飞机飞行品质的影响。
This paper presents mainly parameter selection characteristic of autopilot and effect to flight quality of aircraft, after a basic configuration of fixed gain control augmentation system is shown.
同时通过预先固定反馈增益阵中的某些元素的方法，使得控制器满足因果约束的要求。
On the other hand, by prefixing some elements in the output feedback gain matrix, the casual condition of the controller is automatically satisfied.
在分析系统特性的基础上设计以某一速度为基准的、ITAE性能指标最优的固定增益鲁棒pid控制器和前置滤波器。
Based on the analysis on system characteristics, a robust fixed gain PID controller and prefilter with optimum ITAE performance indicator are designed for a base speed.
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