Abstract
An n × n nonlinear plant that is known to be a member of a given set is given. The plant is embedded in a feedback structure in order to achieve desired closed-loop performances. The existing QFT technique for that purpose, based on replacing each nonlinear plant by an uncertain linear time invariant plant, is extended to design LTV controllers. In addition, a more efficient fixed-point theorem based on Nomotopic invariance is used. The main results are that: (i) a controller with less control effort compared to a linear time invariant controller is achieved; and (ii) the class of plants and desired closed-loop specifications to which the technique can be applied is enlarged. A detailed design example is included.
Original language | English |
---|---|
Pages (from-to) | 226-232 |
Number of pages | 7 |
Journal | Journal of Dynamic Systems, Measurement and Control, Transactions of the ASME |
Volume | 121 |
Issue number | 2 |
DOIs | |
State | Published - Jun 1999 |