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LTI modelling of active magnetic bearings by means of system identification
(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
(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 ...
μ-Analysis applied to self-sensing active magnetic bearings
(SAIEE Publications, 2011)
The stability margin of a two degree-of-freedom self-sensing active magnetic bearing (AMB) is estimated by means of ?-analysis. The specific self-sensing algorithm implemented in this study is the direct current measurement ...
Variance-based sensitivity of localized sulphation to microporous separator properties using a distributed parameter model of a valve-regulated lead-acid battery
(Electrochemical Society, 2016)
Progressive sulphation of the negative electrode in a lead-acid battery under high-rate operation remains a serious problem. This study investigates how healthier end-of-discharge conditions, in a valve-regulated lead-acid ...