|Design of Preview Controller for Linear Continuous-time Systems with Input Delay
Yonglong Liao and Fucheng Liao*
International Journal of Control, Automation, and Systems, vol. 16, no. 3, pp.1080-1090, 2018
Abstract : "This paper makes it possible to design a preview controller for linear continuous-time systems with
input delay, which expands the preview control theory. An augmented error system is established. And a variable
substitution is used to transform the delay preview control system into a delay-free one whose preview controller
uses the future value of the augmented state vector. The future value of the augmented state vector is estimated
by the information of the current state vector, the control input on the past time window, and the reference signal
on the future time window. Under the assumption of zero initial conditions, a simplified controller with both delay
compensation and preview compensation is obtained for the original system. In addition, a preview controller with
full-order observer is offered. Finally, simulation results are presented to illustrate the effectiveness and robustness
of the controller."
Continuous-time system, full-order observer, input delay, preview control.