Overcoming the limitations of adaptive control by means of logic-based switching

Thu, 5 May 2005 00:00:00 +0000

In this paper we describe a framework for deterministic adaptive control which involves logic-based switching among a family of candidate controllers. We compare it with more conventional adaptive control techniques that rely on continuous tuning, emphasizing how switching and logic can be used to overcome some of the limitations of traditional adaptive control. The issues are discussed in a tutorial, non-technical manner and illustrated with specific examples. (C) 2003 Elsevier Science B.V. All rights reserved.

Hysteresis-based switching algorithms for supervisory control of uncertain systems

Thu, 5 May 2005 00:00:00 +0000

We address the problem of controlling a linear system with unknown parameters ranging over a continuum by means of switching among a finite family of candidate controllers. We present a new hysteresis-based switching logic, designed specifically for this purpose, and derive a bound on the number of switches produced by this logic on an arbitrary time interval. The resulting switching control algorithm is shown to provide stability and robustness to arbitrary bounded noise and disturbances and sufficiently small unmodeled dynamics. (C) 2002 Elsevier Science Ltd. All rights reserved.

Recent ccdc_postprints items

Overcoming the limitations of adaptive control by means of logic-based switching

Hysteresis-based switching algorithms for supervisory control of uncertain systems