Abstract
A simple PI controller with anti-windup (PIAW controller) has been developed to control the relative phase between the vibrations of an adaptive tuned vibration absorber (ATVA) and a primary mass to which the ATVA has been attached. The controller and dynamic system combination acts as a phase-locked loop (PLL). This paper compares the PIAW controller with a traditional PLL. In both cases, the forward loop contains a static nonlinearity in series with a linear plant. A benefit of the PIAW controller is that if high gains are used to achieve rapid response times, stability is still guaranteed. While PIAW controller usage has so far been restricted to the ATVA problem in the area of adaptive-passive vibration control, it is anticipated that the controller will have further application in other areas of vibration and motion control research.
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