Title:
MOTOR CONTROL DEVICE, SHEET TRANSFER DEVICE, AND IMAGE FORMING DEVICE
Document Type and Number:
Japanese Patent JP2019097254
Kind Code:
A
Abstract:
To provide a motor control device capable of making a motor control correspond to a vector control system.SOLUTION: A motor control device measures a period of one pulse of a full-step pulse input into a driving circuit of a motor having two phase windings, and stores a measurement result. The measurement result stored is read out at the timing of the 2nd pulse of the full-step pulse or a prescribed timing for the rest of them, a micro-step pulse is generated seven times by measuring the timing in an eight-division micro-step period, and the 8th micro-step pulse is generated so as to be matched with the period of the corresponding full-step pulse. A current value on a ground side of the driving circuit is detected, an electric angle is detected by estimating an induction voltage occurred in the phase winding of the motor on the basis of the current value detected, a vector control is performed on the basis of the electric angle detected and the micro-step pulse, a PWM signal is generated in accordance with the result obtained by detecting the current value for each micro-step pulse and the vector control, and a motor control is performed by being synchronized with the full-step pulse input.SELECTED DRAWING: Figure 2
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Inventors:
YAMAZAKI KATSUYUKI
Application Number:
JP2017222730A
Publication Date:
June 20, 2019
Filing Date:
November 20, 2017
Export Citation:
Assignee:
CANON KK
International Classes:
H02P8/12; G03G21/00; G03G21/14; H02P8/22; H02P21/00
Attorney, Agent or Firm:
Masatake Suzuki