Title:
Solenoid drive
Document Type and Number:
Japanese Patent JP6324437
Kind Code:
B2
Abstract:
A solenoid drive device includes a first solenoid drive circuit, a second solenoid drive circuit, a selection circuit, and circuitry. The circuitry controls the first switching element and the second switching element with a duty control in a control cycle according to acquired values of the first drive current and the second drive current so that a first on/off switching direction of the first switching element at a start timing of the control cycle is opposite to a second on/off switching direction of the second switching element at the start timing. The circuitry determines whether a failure in at least one of the selector, the first solenoid drive circuit, and the second solenoid drive circuit occurs based on a change in the selection detection signal in a period during which an on/off state of the first switching element is different form an on/off state of the second switching element.
Inventors:
Hideaki Yamashita
Yasumasa Kaiya
Yasumasa Kaiya
Application Number:
JP2016102286A
Publication Date:
May 16, 2018
Filing Date:
May 23, 2016
Export Citation:
Assignee:
Honda motor industry stock company
International Classes:
H01F7/18; F02D41/02; F02D41/22
Attorney, Agent or Firm:
Koji Arai
Tomoo Takahashi
Hiroto Mohri
Tomoo Takahashi
Hiroto Mohri