Method for voltage feedback for current mode linear motor...

Details Method for voltage feedback for current mode linear motor... Method for voltage feedback for current mode linear motor...

2007-04-17

2007-04-17

Leykin, Rita (Department: 2837)

Electricity: motive power systems

Constant motor current, load and/or torque control

C318S434000, C318S434000, C318S254100, C318S132000

Reexamination Certificate

active

10406044

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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