Title:
【発明の名称】ステップモータの駆動制御方法
Document Type and Number:
Japanese Patent JP3133233
Kind Code:
B2
Abstract:
A method of driving a stepping motor operable on a control signal having a predetermined number of excitation patterns switched in a predetermined sequence during each excitation cycle to rotate, at a predetermined angle defined by two stop positions, through step positions having sequential step numbers with respect to a reference step position. With a control unit powered from a source of power for producing the control signal to the stepping motor, the control unit having a memory held powered for storing a control step position upon interruption of the power to the control circuit and means for resetting the stepping motor to an initial step position set near one of the stop positions when the power to the control unit is resumed, a target step position is set at a step number equal to the step number of the initial step position plus the number of excitation patterns included in each excitation cycle. The stepping motor is driven to make steps in number equal to a difference of the step number of the control step position stored in the memory from the step number of the target step position.
Inventors:
Makoto Kimura
Application Number:
JP17079295A
Publication Date:
February 05, 2001
Filing Date:
July 06, 1995
Export Citation:
Assignee:
Unisia Jecs Co., Ltd.
International Classes:
H02P8/00; B60G17/015; H02P8/08; H02P8/36; (IPC1-7): H02P8/00; B60G17/015
Domestic Patent References:
| JP7170790A | ||||
| JP5321733A | ||||
| JP5330327A | ||||
| JP63112914U |
Attorney, Agent or Firm:
Satoru Asakura (4 outside)