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In this paper, two cascaded electrodynamic shakers are supplied by the three-leg inverter. The conventional comparator-based pulse width modulation (PWM) has limited output voltage region due to the common leg. To enlarge the output voltage region and improve the inverter efficiency, the novel multi-dimensional feedback quantized modulation (MDFQM) is used. All the control algorithms are implemented...
Compared to the conventional analog-circuit control and linear power amplifier for permanent-magnet electrodynamic shaker (PMEDS), a DSP-based digital current control with switched-mode power amplifier is proposed in this paper. A full-bridge converter is connected directly to PMEDS without LC filter in order to directly regulate the shaker current and simplify the digital current control. To meet...
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