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With the development of power electronics, Pulse Width Modulated (PWM) power has been applied widely. The pulse voltage engendered by PWM may lead to the premature failure of inverter-fed motors. Partial Discharge (PD) under a sequence of high-frequency pulse is one of the key factors which lead to premature failure of inverter-fed motors. In this paper, aging experiment on magnetic wires for turn...
In (D. Cheng et. al, 2004),(D. Cheng et. al, 2005), it is proved that for a given controllable pair (A, B) with A isin Ropfn times n, B isin Ropfn times m, and any lambda > 0, a gain matrix K can be designed so that pare(A + BK)t par les MlambdaLe-lambdat where M and L are constants independent of A. Here we show that M and L can be chosen much smaller than that proposed in (D. Cheng et. al, 2004),(D...
Geometric properties of null controllable region of discrete-time switched linear systems with input saturation are studied. We show that the null controllable region is not convex in general and is centrally symmetric. Under certain conditions, it can be well approximated by a nondecreasing region sequence. It is also shown that the null controllable region is contained in the Minkowski sum of null...
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