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Feedback Control and the Arrow of Time

The purpose of this paper is to highlight the central role that the time asymmetry of stability plays in feedback control. We show that this provides a new perspective on the use of doubly-infinite or semi-infinite time axes for signal spaces in control theory. We then focus on the implication of this time asymmetry in modeling uncertainty, regulation and robust control. We point out that modeling uncertainty and the ease of control depend critically on the direction of time. We also discuss the relationship of this control-based time-arrow with the well known arrows of time in physics.

preprint2008arXivOpen access
Tryphon T. GeorgiouMalcolm C. Smith
math.OCmath.DS
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Tryphon T. GeorgiouMalcolm C. Smith

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