Drive control device for a stepper motor and drive control...

Details Drive control device for a stepper motor and drive control... Drive control device for a stepper motor and drive control...

2008-12-22

2011-12-20

Benson, Walter (Department: 2837)

Electricity: motive power systems

Open-loop stepping motor control systems

C318S400420, C318S560000, C318S671000, C318S685000, C318S700000

Reexamination Certificate

active

08080968

ABSTRACT:
A stepper motor control device includes a control device that controls an operation of a stepper motor. The control device implements a target rotational angle change computation process that calculates a target rotational angle change of the stepper motor and a divisional target rotational angle computation process that equally divides the target rotational angle change within a range not exceeding a rotational limit for loss of synchronism of the stepper motor. The divisional target rotational angle computation process divides the target rotational angle change within the range to calculate a “quotient” and a “remainder” thereof. The drive control device of the stepper motor sets the “quotient” to “quotient+1” in the case the “remainder” portion is not—and obtains a first divisional target rotational angle and a second divisional target rotational angle differing from the first divisional target rotational angle to drive the stepper motor.

REFERENCES:
patent: 6956351 (2005-10-01), Yamada
patent: 7034496 (2006-04-01), Oishi
patent: 2005/0083008 (2005-04-01), Oishi
patent: 2004-328807 (2004-11-01), None
patent: 2007228763 (2007-09-01), None
Machine translation of JP2007228763A.

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