Global asymptotic tracking for nonminimum‐phase nonlinear systems in output feedback form.
- Resource Type
- Article
- Authors
- Su, Shanwei; Lin, Wei
- Source
- International Journal of Robust & Nonlinear Control. 8/1/2020, Vol. 30 Issue 12, p4485-4502. 18p.
- Subject
- *NONLINEAR systems
*COORDINATE transformations
*LINEAR systems
*SYSTEM dynamics
- Language
- ISSN
- 1049-8923
Summary: The problem of global asymptotic tracking by output feedback is studied for a class of nonminimum‐phase nonlinear systems in output feedback form. It is proved that the problem is solvable by an n‐dimensional output feedback controller under the two conditions: (a) the nonminimum‐phase nonlinear system can be rendered minimum‐phase by a virtual output; and (b) the internal dynamics of the nonlinear system driven by a desired signal and its derivatives has a bounded solution trajectory. With the help of a new coordinate transformation, a constructive method is presented for the design of a dynamic output tracking controller. An example is given to validate the proposed output feedback tracking control scheme. [ABSTRACT FROM AUTHOR]