Title:
TRACTION CONTROL DEVICE AND TRACTION CONTROL METHOD
Document Type and Number:
WIPO Patent Application WO/2015/079553
Kind Code:
A1
Abstract:
The present invention acquires the acceleration (α) of a moving body that has a drive wheel that is driven by a motor, the rotational speed (ω) of the drive wheel of the moving body, and the actual torque value (Tm) that is generated by the motor. Then, after calculating a rotational acceleration (dω/dt) on the basis of the rotational speed (ω), a slip index calculation unit (740) calculates the slip index (λp) of the drive wheel on the basis of the rotational acceleration (dω/dt) and the acceleration (α). Next, after estimating the drive torque (Td) of the drive wheel on the basis of the slip index (λp) and the actual torque value (Tm), a control unit (750) calculates a limit value for a torque command value (Tc) on the basis of the slip index (λp) and the drive torque (Td). Then, the control unit (750) sends, to a motor drive system (900), a torque setting value (Ts) that is obtained by using the limit value to set a limit on the torque command value (Tc). As a result, the present invention can, by means of a simple configuration, quickly perform the control necessary for stable travel in accordance with changes in road surface conditions while ensuring necessary drive force.
Inventors:
KATO MASAHIRO (JP)
Application Number:
PCT/JP2013/082148
Publication Date:
June 04, 2015
Filing Date:
November 29, 2013
Export Citation:
Assignee:
PIONEER CORP (JP)
International Classes:
B60L15/20
Foreign References:
| JP2008167624A | 2008-07-17 | |||
| JP2005207953A | 2005-08-04 | |||
| JP2010236883A | 2010-10-21 | |||
| JP2009077505A | 2009-04-09 | |||
| JP2012186928A | 2012-09-27 | |||
| JPH02299402A | 1990-12-11 |
Attorney, Agent or Firm:
SHIBATA, ITSUO (JP)
Shibata Itsuo (JP)
Shibata Itsuo (JP)
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