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Comparison of two bumpless transfer methods for a discrete-time switched system with robust control

Peter Valach, Danica Rosinova
Two novel schemes are presented for a bumpless transfer in a discrete-time switched system with robust controller. Transient effects produced by switching system modes are reduced by the proposed methods, which are based on pre-setting an off-line controller with reference model respective to an inactive mode.
In this way, oscillations in output transient response are damped, when this mode is activated in a switching time. An off-line controller is driven using off-line closed loop in the first method and in the second method, an off-line controller is driven by a static
feedback gain F. The equations determining static feedback gain F for the discrete-time system were developed using quadratic cost function to optimize transient behaviour. The obtained results from both approaches are illustrated and compared by simulation
experiments. The proposed methods are verified and compared also by real plant experiments.
CYBERNETICS AND PHYSICS, Vol. 4, No. 2. 2015, 49-57.
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