Browsing Faculty of Engineering@PUK by Author "Van Vuuren, Pieter Andries"

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µ-Analysis applied to self-sensing active magnetic bearings

Van Schoor, George; Van Vuuren, Pieter Andries (SAIEE Publications, 2011)

The stability margin of a two degree-of-freedom self-sensing active magnetic bearing (AMB) is estimated by means of µ-analysis. The specific self-sensing algorithm implemented in this study is the direct current measurement ...
LTI modelling of active magnetic bearings by means of system identification

Van Schoor, George; Van Vuuren, Pieter Andries; Venter, Willem Christiaan (SAIEE Publications, 2011)

A relatively unknown phenomenon in active magnetic bearings (AMBs) is that the frequency content of their rotor position signal can induce nonlinear behaviour in the bearings. The existence of such frequency-induced nonlinear ...
Multivariable H∞ or Centre of gravity PD control for an active magnetic bearing flywheel system

Steyn, Stephanus Jacobus Marais; Van Schoor, George; Van Vuuren, Pieter Andries (SAIEE Publications, 2011)

A state-space model with uncertainties for an active magnetic bearing energy storage flywheel system (Fly-UPS) is developed. A multivariable robust H∞ controller for the Fly-UPS is then synthesised. Different weighting ...