Title:
MOTOR CURRENT CONTROLLER FOR ELECTRIC DRIVE UNIT IN VEHICLE
Document Type and Number:
Japanese Patent JP3850544
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain a given constant torque, by controlling a motor current with high response, even if a motor speed is shifted with respect to an electric drive unit for driving a driven wheel with a dc motor in a vehicle.
SOLUTION: A target PWM value for feeding a necessary target current in a motor stopped state according to demand output torque of a DC motor is calculated (step 1), and a rotation compensating PWM value for compensating the counter electromotive force caused at motor rotation is calculated (step 2). A command PWM value is calculated (step 3) by adding the target PWM value and the rotation compensating PWM value. Then, a PWM signal with a pulse width corresponding to the command PWM value is output (step 4) so that the power to a DC motor is controlled through a PWM method.
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Inventors:
Shigenobu Sekiya
Application Number:
JP4257498A
Publication Date:
November 29, 2006
Filing Date:
February 24, 1998
Export Citation:
Assignee:
Honda motor industry stock company
International Classes:
B60L15/28; H02P7/03; H02P7/29; (IPC1-7): H02P5/17; B60L15/28
Domestic Patent References:
| JP937417A | ||||
| JP9327102A | ||||
| JP92090A |
Attorney, Agent or Firm:
Kinichi Kitamura
Tashiro Sakuo
Etsuo Machida
Launch Yoji
Tashiro Sakuo
Etsuo Machida
Launch Yoji
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