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Theses and Dissertations

Actuators

Publication Year

Articles 1 - 2 of 2

Full-Text Articles in Controls and Control Theory

High Amplitude Tracking Control, Joseph W. Mcnamee Jun 1998

High Amplitude Tracking Control, Joseph W. Mcnamee

Theses and Dissertations

The problem of tracking control in the face of high amplitude dynamic reference signals, hard state and control constraints, and open-loop unstable plants is investigated. Saturation effects mitigation is a current research topic, and a large body of literature exists which addresses this problem. However, with a few notable exceptions, little work has been accomplished which is applicable to the problem of high amplitude dynamic reference signal tracking in the face of hard state and control constraints, and open-loop unstable plants. Moreover, methods that do address the stated problem generally limit the exogenous reference signal to statically admissible values to …


Manual Tracking Flight Control With Amplitude And Rate Constrained Dynamic Actuators, Russel B. Miller Jan 1997

Manual Tracking Flight Control With Amplitude And Rate Constrained Dynamic Actuators, Russel B. Miller

Theses and Dissertations

A new control methodology for manual flight control, viz., real-time tracking control, is developed. Amplitude and rate constrained dynamic actuators are considered. Optimal tracking control is made possible by the use of unique reference signal prediction strategies which extrapolate the reference signal over the optimization horizon. A receding horizon, linear-quadratic inner-loop controller is employed in conjunction with an outer-loop nonlinear element. The constraint effects mitigation strategy is to optimally track a modified reference signal which yields feasible actuator commands over the optimization horizon when the pilot demanded reference is too aggressive to be tracked by the inner-loop optimal control law. …