화학공학소재연구정보센터
Automatica, Vol.40, No.6, 1035-1041, 2004
Multirate versions of sampled-data stabilization of nonlinear systems
The problem of state feedback sampled-data stabilization of nonlinear systems is considered under the "low measurement rate" constraint and in the presence of (not necessarily small) time delay in the measurement channel. A multirate control scheme is proposed that utilizes a numerical integration scheme to approximately predict the current state from the delayed measurements. For both the controller emulation approach and the approach based on approximate discrete-time model of the system, we show that under standard assumptions the closed-loop multirate sampled data system is asymptotically stable in the semiglobal practical sense. An illustrative example of sampled-data control of vertical take off and landing aircraft is discussed. (C) 2004 Elsevier Ltd. All rights reserved.