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Global output feedback control of nonlinear time-delay systems with input matching uncertainty and unknown output function
- Source :
- International Journal of Systems Science. 50:713-725
- Publication Year :
- 2019
- Publisher :
- Informa UK Limited, 2019.
-
Abstract
- This paper studies the problem of global output feedback control for nonlinear time-delay systems with input matching uncertainty and the unknown output function, whose nonlinearities are bounded by lower triangular linear unmeasured states multiplying the unknown constant, polynomial-of-output and polynomial-of-input growth rates. By constructing a new extended state observer and skillfully combining the dynamic gain method, backstepping method and Lyapunov–Krasovskii theorem, a delay-independent output feedback controller can be developed with only one dynamic gain. It is proved that all the signals of the closed-loop system are bounded, the states of the original system and the corresponding observer converge to zero, and the estimation of input matching uncertainty converges to its actual value. Two examples demonstrate the effectiveness of the control scheme.
- Subjects :
- 0209 industrial biotechnology
Matching (statistics)
Observer (quantum physics)
Computer science
02 engineering and technology
Function (mathematics)
Computer Science Applications
Theoretical Computer Science
Nonlinear system
020901 industrial engineering & automation
Control and Systems Engineering
Control theory
Backstepping
Bounded function
0202 electrical engineering, electronic engineering, information engineering
020201 artificial intelligence & image processing
State observer
Subjects
Details
- ISSN :
- 14645319 and 00207721
- Volume :
- 50
- Database :
- OpenAIRE
- Journal :
- International Journal of Systems Science
- Accession number :
- edsair.doi...........2f87cd8f96d604ea2edd8c703bf5fa73