| Title |
A Time Delay-Based Gain Scheduled Control and It's Application to Electromagnetic Suspension System |
| Authors |
성호경(Hong Ho-Kyung) ; 조정민(Jo Jeong-Min) ; 조흥제(Cho Heung-Jae) |
| Keywords |
The Time Delay-based Gain Scheduled Control ; Electromagnetic Suspension System ; Feedback Controller |
| Abstract |
This paper proposes a gain scheduled control technique using time-delay for the nonlinear system with plant uncertainties and unexpected disturbances. The time delay-based gain scheduled control depends on a direct estimation of a function representing the effect of uncertainties. The information from the estimation is used to cancel the unknown dynamics and the unexpected disturbances simultaneously. The proposed estimation scheme with a finite convergence time is formulated in order to estimate the unknown scheduling variable variation. In other words, the time delay-based gain scheduled control uses the past observation of the system's response and the control input to directly modify the control actions rather than to adjust the controller gains or to identify system parameters. It has a simple structure so as to minimize the computational burden. The benefits of this proposed scheme are demonstrated in the simulation of an electromagnetic suspension system with plant uncertainties and external disturbances, and the proposed controller is compared with the conventional state feedback controller. |