Model-based active electronic damping for stepper motors

Details Model-based active electronic damping for stepper motors Model-based active electronic damping for stepper motors

2007-11-19

2010-06-08

Ro, Bentsu (Department: 2837)

Electricity: motive power systems

Positional servo systems

With particular motor control system responsive to the...

C318S611000, C318S615000, C318S629000, C318S632000

Reexamination Certificate

active

07733051

ABSTRACT:
A method for damping vibrations in a stepper motor with micro-stepping control which comprises the steps of identifying the force amplitudes and phase shifts of multiple harmonic detent torques of the stepper motor, such as the first, second and fourth harmonic detent torques, and tuning the stepper motor with different current commands until minimum friction and resistive torque are obtained. Thereafter, a compensating harmonic current derived from said force amplitudes and phase shifts of the said multiple harmonic detent torques is injected into a current command during operation of the stepper motor to compensate for torque ripples.

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patent: 7429846 (2008-09-01), Akiwa

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