Return-to-zero control method for a stepper motor

Details Return-to-zero control method for a stepper motor Return-to-zero control method for a stepper motor

2007-10-09

2010-10-19

Ro, Bentsu (Department: 2837)

Electricity: motive power systems

Open-loop stepping motor control systems

C318S560000, C318S685000, C318S434000

Reexamination Certificate

active

07816883

ABSTRACT:
In a return-to-zero stepping sequence for a stepper motor that drives the pointer of a gauge, steps that could potentially cause the pointer to flutter are modified. At least the initial potential flutter step of the stepping sequence is divided into sub-steps to progressively attenuate the motor torque, the motor is deactivated during intermediate potential flutter steps, and at least the final potential flutter step of the stepping sequence is divided into sub-steps to progressively re-apply the motor torque.

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