Abstract
In this article, input power, as opposed to the usual input amplitude, constraints are introduced in the context of intermittent control. They are shown to result in a combination of quadratic optimisation and quadratic constraints. The main motivation for considering input power constraints is its similarity with semi-active control. Such methods are commonly used to provide damping in mechanical systems and structures. It is shown that semi-active control can be re-expressed and generalised as control with power constraints and can thus be implemented as power-constrained intermittent control. The method is illustrated using simulations of resonant mechanical systems and the constrained nature of the power flow is represented using power-phase-plane plots. We believe the approach we present will be useful for the control design of both semi-active and low-power vibration suppression systems.
Original language | English |
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Pages (from-to) | 396-409 |
Number of pages | 14 |
Journal | International Journal of Control |
Volume | 86 |
Issue number | 3 |
Early online date | 30 Oct 2012 |
DOIs | |
Publication status | Published - Mar 2013 |
Keywords
- intermittent control
- hybrid control
- vibration control
- semi-active damping
- power phase-plane