ELECTRIC CAR CONTROL DEVICE

Japanese Patent JP3651223

B

PROBLEM TO BE SOLVED: To control slip and skid properly by computing a reference speed approximately in accordance with the car speed at both times when all axes are slipping or skidding, and to improve accelerating and comfort in riding.
SOLUTION: A control device comprises a reference speed computing means 7A which outputs a reference speed computed value by inputting each rotating speed equivalent value of motors, etc., driving each wheel, and a slip and skid control means which computes a torque coefficient to be multiplied by the torque command of each motor, etc., by detecting slip or skid of the wheels from the difference between the reference speed computed value and each rotation speed equivalent value. The reference speed computing means 7A is provided with a rotation speed selecting means 701, which selects one out of the rotation speed equivalent values one by one, a first-order lag filter 706 which delays acceleration obtained by differentiating the selected rotation speed equivalent value, and a rate-of-change limiting means 704 which limits the rate of change of the rotation speed equivalent value selected by the rotation speed selecting means 701 in compliance with the acceleration delayed by the filter 706, and outputs it as the reference speed computed value.

Nakayama, Tomoharu
Iwabori, Michio

JP1998000007453

March 04, 2005

January 19, 1998

Click for automatic bibliography generation  

FUJI ELECTRIC CO LTD

B60L3/00; B60L9/18; B60L15/20; B60L3/00; B60L9/00; B60L15/20; (IPC1-7): B60L9/18

Previous Patent: FIXING DEVICE FOR IMAGE FORMING DEVICE

Next Patent: MOUNTING STRUCTURE OF BUMPER REINFORCEMENT