Title:
MOTOR CONTROLLER, RECORDING DEVICE, AND MOTOR CONTROL METHOD
Document Type and Number:
Japanese Patent JP2015220803
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a motor controller capable of appropriately controlling a motor on the basis of an accurately estimated motor current even when heat generation and the like are caused in the motor.SOLUTION: A motor controller comprises: a PWM output section 152 setting a duty value of PMW control with respect to a feed motor 53; a rotational speed calculation section 142 acquiring a rotational speed of the feed motor 53; a temperature estimation section 162 acquiring a temperature variation of the feed motor 53; a coefficient correction section 163 correcting a first coefficient and a second coefficient on the basis of the acquired temperature variation; a current estimation section 161 estimating a motor current being a current flowing through the feed motor 53 on the basis of a value obtained by multiplying the set duty value by the corrected first coefficient and a value obtained by multiplying the acquired rotational speed by the corrected second coefficient; and a feed motor driver 106c driving the feed motor 53 on the basis of the motor current estimated by the current estimation section 161.
Inventors:
ANZAI SUMIHITO
Application Number:
JP2014101186A
Publication Date:
December 07, 2015
Filing Date:
May 15, 2014
Export Citation:
Assignee:
SEIKO EPSON CORP
International Classes:
H02P7/06; B41J19/18
Attorney, Agent or Firm:
Masahiko Ueyanagi
Kazuaki Watanabe
Kazuaki Watanabe