Real-time control of non-uniformly sampled systems

Industrial applications of digital control require a synergy between well-d esigned control algorithms and carefully implemented control systems. The d esign of digital controllers should not be constrained to the simplest case of a single rate with sychronous sampling strategies, and the digital impl ementation should take account of the actual real-time operating environmen t. In this paper, control design techniques under non-uniform sampling sche mes are reviewed, and computer improvements to cancel or reduce the effect of delays and process interactions are presented. (C) 1999 Elsevier Science Ltd. All rights reserved.