Stepper motor drive system

Details Stepper motor drive system Stepper motor drive system

1998-12-21

2000-04-04

Nappi, Robert E.

Electricity: motive power systems

Open-loop stepping motor control systems

318696, 318603, H02P 800

Patent

active

060465670

ABSTRACT:
A device for driving a stepper motor in variable sized micro-steps in response to slew rate commands. The device integrates the slew rate commands, calculates the currents to be supplied to the windings of the stepper motor and supplies these currents to the stepper motor. The device utilizes an update frequency for the integration, calculation and supply of currents to the stepper motor that is higher than the frequencies of the predominant resonances of whatever system is being driven by the stepper motor. As a consequence, the size of each micro-step executed by the stepper motor in response to slew rate commands is larger for high slew rates and smaller for low slew rates.

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patent: 5572105 (1996-11-01), Nojima

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