Controller canonical form based design : an airplane case study

Abstract

The state feedback multivariable control design based on eigenvalues assignment is reviewed and is employed to develop a systematic design procedure to meet the lateral handling qualities design objectives of a fighter aircraft over a single flight condition. The objective in this project is to investigate state feedback multivariable control design based on similarity transformations in terms of feedback gain, robustness and effect of similarity transformations. The desirable design can be made using two main transformations block controller form and general controller form. The block controller, observer and diagonal forms are used among an infinite number of choices of assigning a set of solvents. In addition to those forms, the general controller form is used directly to find the resulting state feedbacks. The similarity transformation provides significant insight into the design process and plays a pivotal role in the design of state feedback gain magnitude according to the specified criteria of robustness, sensitivity and time specifications of the feedback system. Through this project we would like to give the designer many possibilities to select the most suitable design depending on the specified need for the flight condition of a fighter aircraft.