TORQUE DISTRIBUTION DEVICE, TORQUE DISTRIBUTION METHOD, TORQUE DISTRIBUTION VALUE GENERATION METHOD, AND PROGRAM

Title:

TORQUE DISTRIBUTION DEVICE, TORQUE DISTRIBUTION METHOD, TORQUE DISTRIBUTION VALUE GENERATION METHOD, AND PROGRAM

Document Type and Number:

WIPO Patent Application WO/2012/111160

Kind Code:

A1

Abstract:

This torque distribution device (100) is provided with: a total torque command value acquisition unit (101) that acquires a total torque command value that has been input; an efficiency map acquisition unit (105) that acquires a motor efficiency map (104) of an installed motor; a vehicle speed detection unit (102a) that detects the vehicle speed of a vehicle; a drive wheel rotational velocity detection unit (102b) that detects the rotational velocity of a drive wheel; a slip ratio calculation unit (103) that, on the basis of the vehicle speed and the drive wheel rotational velocity, calculates the slip ratio of the drive wheel; a calculation unit (106) that, on the basis of the slip ratio, creates an efficiency change formula indicating the efficiency value on an operating line indicating the relationship between torque and drive wheel rotational velocity, and calculates the optimally efficient torque value of the efficiency change formula on the operating line; a distribution unit (107) that, on the basis of the slip ratio, total torque command value, and optimally efficient torque value, calculates a torque distribution value with respect to each motor in a manner so as to maximize the overall efficiency; and a control unit (108) that, on the basis of the calculated torque distribution values, controls the torque distribution to each motor.

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Inventors:

KATO MASAHIRO (JP)
MURAMATSU EIJI (JP)
KAWABATA CHIHIRO (JP)
KITANO KAZUTOSHI (JP)
HASHIMOTO KAZUNOBU (JP)
TAKEUCHI YOSHIKAZU (JP)

Application Number:

PCT/JP2011/053565

Publication Date:

August 23, 2012

Filing Date:

February 18, 2011

Export Citation:

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Assignee:

PIONEER CORP (JP)
KATO MASAHIRO (JP)
MURAMATSU EIJI (JP)
KAWABATA CHIHIRO (JP)
KITANO KAZUTOSHI (JP)
HASHIMOTO KAZUNOBU (JP)
TAKEUCHI YOSHIKAZU (JP)

International Classes:

B60L9/18; B60L15/20

Foreign References:

JP2006345677A	2006-12-21
JP2008228407A	2008-09-25
JP2008178216A	2008-07-31
JP2010115065A	2010-05-20
JP2009159682A	2009-07-16
JP2004120821A	2004-04-15
JP2006180657A	2006-07-06
JP2006345677A	2006-12-21
JP2007037217A	2007-02-08
JP2007313982A	2007-12-06
JP2009159682A	2009-07-16
JP2006213130A	2006-08-17

Other References: