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Title:
CONTROL DEVICE FOR POWER STEERING DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/049731
Kind Code:
A1
Abstract:
Provided is a control device for a power steering device, with which a diagnostic range during operation of a vehicle can be expanded and a breakdown can be detected and notified early. The control device for the power steering device has a redundant configuration comprising first and second system drive units that each drive an assist electric motor. Each drive unit comprises: a diagnosis functional unit that diagnoses a breakdown; and a mode switching functional unit that, during vehicle operation in which the necessary assist force output is low, uses one of the system drive units to output assist force and causes the other system drive unit to transition to a breakdown diagnosis mode so as to perform a diagnosis of a drive circuit or a power supply circuit.

Inventors:
UESAKA, Kenta (7-1, Onna 4-chome, Atsugi-sh, Kanagawa 10, 〒2438510, JP)
NAKADA, Mitsuaki (7-1, Onna 4-chome, Atsugi-sh, Kanagawa 10, 〒2438510, JP)
Application Number:
JP2018/031768
Publication Date:
March 14, 2019
Filing Date:
August 28, 2018
Export Citation:
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Assignee:
HITACHI AUTOMOTIVE SYSTEMS, LTD. (2520 Takaba, Hitachinaka-shi Ibaraki, 03, 〒3128503, JP)
International Classes:
B62D5/04; B60R16/02; B62D6/00; H02P25/22; H02P29/024; B62D101/00; B62D113/00; B62D119/00; B62D137/00
Domestic Patent References:
WO2017037779A12017-03-09
WO2015136918A12015-09-17
WO2016039368A12016-03-17
Foreign References:
JP2009274548A2009-11-26
JP2016113024A2016-06-23
JP2012111474A2012-06-14
JP2014221600A2014-11-27
Attorney, Agent or Firm:
OGAWA, Moriaki et al. (7th Floor, Akasaka Eight One Building 13-5, Nagata-cho 2-chome, Chiyoda-k, Tokyo 14, 〒1000014, JP)
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