Providing accurate gradient currents is challenging due to the gradient chain nonlinearities, arising from gradient power amplifiers and power supply stages. This work introduces a new characterization approach that takes the amplifier and power supply into account, resulting in a nonlinear model that compensates for the current droop.
The gradient power amplifier and power supply...
Stability condition for two dimensional (2-D) shift-varying systems is presented. The form considered in this paper is the Givone-Roesser (G-R) model, which is discrete 2-D state space system. The sufficient condition for BIBO stability is proved. For this proof, Wave model is used. Frist, G-R model is transformed into Wave model and then applied 1-D results on this model.
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SYNAT - “Interdisciplinary System for Interactive Scientific and Scientific-Technical Information”.