Invention Grant
US07205736B2 Method for voltage feedback for current mode linear motor driver 有权
电流模式直线电机驱动器的电压反馈方法

Method for voltage feedback for current mode linear motor driver
Abstract:
Methods and systems for driving a motor are disclosed. A center tap voltage and a desired center tap voltage are used to generate a voltage feedback. A power amplifier receives a reference current and the voltage feedback. The power amplifier provides a phase current to a phase of a motor. The phase current is substantially centered about the desired center tap voltage as a consequence of the voltage feedback. Thus, high-side to low-side or state to state current variations are reduced thereby reducing the occurrence of problems such as torque ripple and back EMF.
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