Title:
SLIP CONTROLLER OF ELECTRIC VEHICLE
Document Type and Number:
Japanese Patent JP3532425
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a slip controller of an electric vehicle capable of spraying sand in the optimum condition.
SOLUTION: The rotational speed of an electric vehicle driving motor 7 is detected, and a first comparison circuit 15 detects a slip speed 15a of a wheel based on the detected speed and a vehicle body speed 16a. An adhesion calculation circuit 17 calculates adhesion between the wheel 11 and a rail 12 from the racing speed 15a, a second comparison circuit 18 compares the adhesion with tensile force of the driving motor 7 based on an operation command 8a of an electric vehicle, a sand spraying device calculation circuit 19 calculates a sand spray amount corresponding to the difference, and a controller 20 controls a sand spraying device 21 based on the calculated sand spray amount. The adhesion is calculated based on the slip speed and an amount of sand capable of adhering again is sprayed on a rail from the sand spraying device 21, so that the proper amount of sand corresponding to the difference between the tensile force and the adhesion can be sprayed by corresponding to the adhesion force between the wheel 11 and the rail 12 which changes every moment on the real time basis.
Inventors:
Henmi, Takuma
Application Number:
JP29877898A
Publication Date:
May 31, 2004
Filing Date:
October 20, 1998
Export Citation:
Assignee:
TOSHIBA CORP
International Classes:
B61C15/10; B60L9/18; (IPC1-7): B61C15/10; B60L9/18
Attorney, Agent or Firm:
三好 秀和 （外７名）
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