Title:
電動ＶＣＴの制御装置
Document Type and Number:
Japanese Patent JP7226093
Kind Code:
B2
Abstract:
When an EDU determines that a motor is in a control unstable state where the motor cannot be controlled to a target rotation speed due to a drive voltage output duty value being smaller than a threshold value, the EDU performs a control point shifting operation to shift a control point between a first control point, which is in the control unstable state, and a second control point, which is a control stable state outside the control unstable state. Thus, even when the motor is in a stepping rotation state, it is possible to control the target rotation speed regardless of influence of a cogging torque, and appropriately control the cam phase of the intake camshaft to a target phase when the engine is stopped.
Inventors:
Yoshimoto Kato
Application Number:
JP2019096781A
Publication Date:
February 21, 2023
Filing Date:
May 23, 2019
Export Citation:
Assignee:
株式会社デンソー
International Classes:
F01L1/356
Domestic Patent References:
| JP2012241579A | ||||
| JP2008057454A | ||||
| JP2008086111A |
Foreign References:
| US8939113 |
Attorney, Agent or Firm:
Patent Attorney Corporation Sato