Robust Flight Controller Design That Takes Into Account Handling Quality

Abstract

Ar obust flight controller design method, which satisfies handling quality requirements, is shown. The expanded control anticipation parameter is introduced as a new handling quality criterion to treat high-order dynamics. The relations to the C∗ criterion and equivalent systems are shown. The proposed criterion is formulated as a linear matrix inequality, and a robust flight controller that satisfies handling-quality requirements can be designed numerically. In addition, a cost index with a time-weighting function that evaluates several time response features is introduced into controller design. An example that illustrates flight controller design of Multi-Purpose Aviation Laboratory airplane is presented, and flight testing is performed.