Abstract
We consider a control design problem for a class of uncertain systems. The salient features of the problem are fourfold. First, the uncertainty is time-varying. Second, the system is nonlinear. Third, the state is constrained to be only positive. Fourth, the control input may be constrained to be one-sided (i.e., either positive or negative). We start with a state transformation to relea.se the state constraint. A partial signdefiniteness knowledge of the uncertainty is then shown to be critical to meet the control constraint. Three classes of controls are constructed: one for state constraint and two for the additional control constraint. They render the system globally practically stable.
Original language | English (US) |
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Pages (from-to) | 675-684 |
Number of pages | 10 |
Journal | Journal of Dynamic Systems, Measurement and Control, Transactions of the ASME |
Volume | 119 |
Issue number | 4 |
DOIs | |
State | Published - Dec 1997 |
ASJC Scopus subject areas
- Control and Systems Engineering
- Information Systems
- Instrumentation
- Mechanical Engineering
- Computer Science Applications