Stabilisation for upper-triangular nonlinear systems subject to time-delay via sampled-data control and its applications

• Published in: International journal of control Vol. 95; no. 8; pp. 2037 - 2044
• Main Authors: Sheng, Zhaoming, Ma, Qian, Meng, Qingtan, Zhou, Guopeng
• Format: Journal Article
• Language: English
• Published: Abingdon Taylor & Francis 03.08.2022; Taylor & Francis Ltd
• Subjects: Control systems design; Controllers; Coordinate transformations; Nonlinear systems; output feedback domination; sampled-data control; time-delay; Upper-triangular nonlinear system
• ISSN: 0020-7179; 1366-5820
• DOI: 10.1080/00207179.2021.1891292

This paper investigates the stabilization problem for upper-triangular nonlinear systems subject to time-delay by using sampled-data control. In order to make the design process more feasible, the coordinate transformation is introduced to generate a scaling gain. Then the linear observer is constructed and the sampled-data controller is obtained based on the estimated states. Under the upper-triangular linear growth assumption and Lyapunov method, the suitable parameters can be selected to make the system achieve globally stable. It can be proved that the proposed method can also be extended to the system with multiple time delays. Finally, the effectiveness of the designed controller is demonstrated by using numerical and practical examples.