Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
MOTOR DRIVE DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/119432
Kind Code:
A1
Abstract:
Provided is a motor drive device with which it is possible to improve the level of comfort of an occupant riding in a vehicle and to improve power consumption and the like, and with which it is also possible to reduce costs and save space. This motor drive device is provided with: an electric motor (6); a control device (1) which controls the torque of the electric motor (6) or a quantity of state corresponding to the torque; and a torque transmitting means which transmits the torque of the electric motor (6) to wheels of a vehicle. The control device (1) includes a torque fluctuation suppressing functional unit (15) which suppresses torque fluctuations in the electric motor (6). The torque fluctuation suppressing functional unit (15) includes an execution determining unit (15b) which determines whether or not to suppress torque fluctuations in the electric motor (6), on the basis of the result of a comparison between an estimated value of the frequency of the torque fluctuations in the electric motor (6) and one or both of the transmission characteristics of the torque transmitting means and the vibration characteristics of the vehicle.

Inventors:
MASUDA, Yui (1578 Higashikaizuka, Iwata-sh, Shizuoka 10, 〒4388510, JP)
Application Number:
JP2017/000096
Publication Date:
July 13, 2017
Filing Date:
January 05, 2017
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
NTN CORPORATION (3-17, Kyomachibori 1-chome Nishi-ku, Osaka-sh, Osaka 03, 〒5500003, JP)
International Classes:
H02P29/40; B60L15/20; H02P23/04
Foreign References:
JP2012217284A2012-11-08
JP2009106069A2009-05-14
JP2014150604A2014-08-21
JP2014150604A2014-08-21
JP2007267466A2007-10-11
JP2000217209A2000-08-04
Attorney, Agent or Firm:
SUGIMOTO, Shuji et al. (Higobashi Nittai Bldg, 10-2 Edobori 1-chome, Nishi-ku, Osaka-sh, Osaka 02, 〒5500002, JP)
Download PDF: