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Title:
CONTROLLER FOR INDUCTION MOTOR, AND VEHICLE AND VEHICLE SYSTEM USING THE CONTROLLER
Document Type and Number:
Japanese Patent JP2006340437
Kind Code:
A
Abstract:

To accurately estimate the torque of each induction motor even if there is dispersion in diameters of wheels in the case of driving a plurality of wheels with a plurality of induction motors.

This controller gets the first torque of each of the above induction motors, based on the rotational speed and the output voltage of individual induction motors by a first torque operating part 13, and calculates the second torque of each of the above induction motors from the first torque and a torque command, and transmits the second torque estimated by the second torque operating part 14 to a cabin display by a communication part 16 so as to display it. The cabin display detects the dispersion of the diameters of wheels being over the tolerance from the second torque estimate.


Inventors:
ISHIDA SEIJI
NAKADA KIYOSHI
KOTAKE KAZUYOSHI
MIYAKE WATARU
Application Number:
JP2005159547A
Publication Date:
December 14, 2006
Filing Date:
May 31, 2005
Export Citation:
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Assignee:
HITACHI LTD
International Classes:
H02P5/74; B60L9/18
Domestic Patent References:
JPH0937408A1997-02-07
JP2002281606A2002-09-27
JP2000060198A2000-02-25
JP2003088185A2003-03-20
JPH1080190A1998-03-24
JPH03159596A1991-07-09
JPH08214404A1996-08-20
JPS61210801A1986-09-19
JPH0928002A1997-01-28
JPH0591602A1993-04-09
Attorney, Agent or Firm:
Yoshitsuno Kakuda



 
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