Robustness characteristics of fast-sampling digital I controllers for high-performance aircraft with impaired control surfaces

B. Porter
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Abstract

The robustness characteristics of fast-sampling error-actuated digital set-point tracking PI controllers are established in the case of partially irregular linear multivariable plants. It is shown that the plant-parameter variations tolerable by such fast-sampling error-actuated digital controllers can be expressed very simply in terms of the step-response matrices of the nominal and actual plants. These general results are illustrated by examining the robustness characteristics of a fast-sampling error-actuated digital PI controller for the F-16 aircraft in case the flaperon and elevator suffer various losses in effectiveness.<>
控制面受损的高性能飞机快速采样数字I控制器的鲁棒性
针对部分不规则线性多变量对象,建立了快速采样误差驱动数字设定点跟踪PI控制器的鲁棒性。结果表明,这种快速采样误差驱动的数字控制器所能容忍的对象参数变化可以非常简单地用标称对象和实际对象的阶跃响应矩阵表示。通过对F-16飞机的快速采样误差驱动数字PI控制器在副翼和升降舵遭受各种有效性损失的情况下的鲁棒性特性进行研究,说明了这些一般结果。
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