Title:
ＤＣモータの駆動回路、駆動方法およびそれを用いた電子機器
Document Type and Number:
Japanese Patent JP6934394
Kind Code:
B2
Abstract:
To provide a drive circuit capable of applying a short brake properly.SOLUTION: A first detection circuit 410 generates a position command value P_TGT indicating the target position of a rotor and a speed command value V_TGT indicating the target rotation speed on the basis of a clock signal CLK. A second detection circuit 420 generates a position detection value P_FB indicating the current position of the rotor and a speed detection value V_FB indicating the current rotation speed on the basis of pulse signals EN_A and EN_B from an encoder. A feedback controller 330 generates a torque command value T_REF such that the position detection value P_FB approaches the position command value P_TGT. When the position detection value P_FB is larger than the position command value P_TGT and the torque command value T_REF is negative, a brake controller 430 applies a short brake.SELECTED DRAWING: Figure 13
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Inventors:
Hiroki Hashimoto
Masanori Dobashi
Masanori Dobashi
Application Number:
JP2017213090A
Publication Date:
September 15, 2021
Filing Date:
November 02, 2017
Export Citation:
Assignee:
ROHM Co., Ltd.
International Classes:
H02P6/16; H02P3/06; H02P3/22; H02P6/24
Domestic Patent References:
| JP2016123269A | ||||
| JP2011176942A | ||||
| JP6157770B1 | ||||
| JP2015167469A | ||||
| JP200485838A | ||||
| JP200485383A | ||||
| JP201049208A | ||||
| JP200843058A |
Foreign References:
| WO2017154476A1 | ||||
| WO2017179337A1 |
Attorney, Agent or Firm:
Sakaki Morishita
Masaki Taiki
Masaki Taiki