| Title |
Output-feedback Prescribed Performance Controller for Uncertain General Nonlinear Systems with Unknown Sign of the Input Gain |
| DOI |
https://doi.org/10.5370/KIEE.2022.71.8.1151 |
| Keywords |
general nonlinear system; unknown input gain sign; output-feedback controller |
| Abstract |
The systematic procedure for the design of the output-feedback controller of uncertain general nonautonomous nonlinear systems without a priori knowledge of the sign of the input gain is proposed. The proposed controller adopts higher-order switching differentiator to estimate time-derivatives of the output tracking error. It is mathematically proved that the output tracking error and its time-derivatives are all maintained in the prescribed regions. To illustrate the performance of the proposed controller, numerical simulation was performed. To author’s knowledge, there are no results on the problem tackled in this paper. |