Title:
MOTOR CONTROL METHOD AND MOTOR DRIVING APPARATUS
Document Type and Number:
Japanese Patent JP2015162945
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To achieve quick, high-quality and highly accurate motor deceleration/stop control.SOLUTION: A control method of a motor including a rotor having a magnet, a yoke including a magnetic pole opposed to the magnet, a coil for exciting the magnetic pole of the yoke, and a control unit for controlling rotation of the rotor by a first driving method for switching an energization direction to the coil in accordance with a predetermined time interval or a second driving method for switching the energization direction to the coil in accordance with an output from a position sensor for detecting a rotational position of the rotor includes: a driving step for driving the rotor at a constant speed by the second driving method; a calculation step for calculating the number of driving pulses necessary for stop of the rotor on the basis of a driving voltage of the motor and the rotational frequency of the rotor in the driving step; a deceleration step for starting deceleration of the rotor on the basis of the number of driving pulses; and a stop step for stopping the rotor after driving the rotor by the first driving method.
Inventors:
YAMAMOTO HARUSHIGE
Application Number:
JP2014036181A
Publication Date:
September 07, 2015
Filing Date:
February 27, 2014
Export Citation:
Assignee:
CANON KK
International Classes:
H02P6/24; H02P3/18; H02P8/24
Attorney, Agent or Firm:
Ryosuke Fujimoto
Atsushi Mizumoto
Hirayama Tomoya
Atsushi Mizumoto
Hirayama Tomoya