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Title:
MOTOR CONTROLLER AND MOTOR CONTROL METHOD
Document Type and Number:
Japanese Patent JP2009095155
Kind Code:
A
Abstract:

To provide a technology for further accurately stopping a drive target object at a target stop position regardless of a motor driving state.

A motor controller drives a motor in two control modes of closed-loop control for controlling the motor on the basis of a position of a drive target object and open-loop control for controlling the motor on the basis of previously-given prescribed conditions. The control modes are set so as to be switched from the closed-loop control to the open-loop control at each mode switching position pT, pP between a specific position before the drive target object reaches a target stop position PS and the target stop position PS. In the open-loop control, when the motor is driven at a specific position during closed-loop control in a reverse driving direction, reverse to a motor driving direction, for driving the drive target object in a target position direction, drive in a reverse motor-driving direction is continuously executed between each mode switching position and the target stop position.


Inventors:
TAKEISHI TETSUJI
Application Number:
JP2007264035A
Publication Date:
April 30, 2009
Filing Date:
October 10, 2007
Export Citation:
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Assignee:
SEIKO EPSON CORP
International Classes:
H02P3/06; H02P29/00
Domestic Patent References:
JP2003189651A2003-07-04
JP2005102358A2005-04-14
JPS6194115A1986-05-13
Attorney, Agent or Firm:
特許業務法人明成国際特許事務所