 |
|
|
|
|
|
 Title: |
US5376868:
Driving force controller for electric motor vehicle
[ Derwent Title ]
|
| Country: |
US United States of America
|
| |
| Inventor: |
Toyoda, Minoru; Nagoya, Japan
Moroto, Shuzo; Nagoya, Japan
Kawamoto, Mutsumi; Nagoya, Japan
Yamashita, Mitsugi; Tokyo, Japan
|
| Assignee: |
Aisin Aw Co., Ltd. Japan
other patents from AISIN AW CO., LTD. (13975) (approx. 533)
News, Profiles, Stocks and More about this company
|
| Published / Filed: |
1994-12-27
/ 1992-04-01
|
| Application Number: |
US1992000864874
|
| IPC Code: |
Advanced:
B60K 17/356;
B60L 3/00;
B60L 9/18;
B60L 15/20;
IPC-7:
B60L 11/00;
|
| ECLA Code: |
B60L3/00; B60L15/20; Y02T10/64D8; Y02T10/72D4;
|
| U.S. Class: |
Current:
318/587;
318/052;
701/022;
Original:
318/587;
318/052;
364/426.02;
364/426.03;
|
| Field of Search: |
318/139,587,52,806,808,376,67
180/165,197,65.8,246,248,244,247,233
364/424.01,424.02,426.02,426.03
|
| Priority Number: |
|
| Abstract: |
A driving force controller for an electric motor vehicle which suppresses changes in behavior of a vehicle when a right or left driving wheel experiences trouble and detects vehicle conditions to independently control the driving force of each wheel so as not to deviate from a predetermined range. The driving force controller computes a driving force for each wheel in accordance to a demand value for driving force and a detected vehicle traveling condition to drive each wheel independently by electric motors. Motor drivers control the motors so that each motor generates power corresponding to the value of driving force computed therefor. A driving demand detector detects the value of driving force demanded for the vehicle and a vehicle condition detector detects a traveling condition of the vehicle. Wheel driving condition detectors detect conditions at the wheels. A computer computes the values of driving force to be provided at each wheel in accordance with the value of driving force demanded and the detected vehicle traveling conditions and corrects the values computed for individual wheel driving forces when a vehicle traveling condition or a wheel driving condition exceeds a predetermined range.
|
| Attorney, Agent or Firm: |
Lorusso & Loud ;
|
| Primary / Asst. Examiners: |
Ip, Paul;
|
| Maintenance Status: |
CC Certificate of Correction issued
|
| INPADOC Legal Status: |
Show legal status actions
Family Legal Status Report
|
| Family: |
Show 3 known family members
|
First Claim:
Show all 18 claims |
What is claimed is:
1. A driving force controller for an electric motor vehicle having wheels independently driven by electric motors, said controller comprising:
- driving demand detecting means for detecting a value of driving force demanded for said vehicle;
- vehicle condition detecting means, for detecting traveling conditions of said vehicle, comprising:
- a steering angle sensor for detecting a steering angle; and
- vehicle turn detecting means for detecting a vehicle condition associated with the turning of the vehicle;
- plural wheel condition detecting means, for independently detecting a driving condition of each individual wheel;
- driving force computing means including (a) means responsive to said value of demanded driving force, said detected traveling conditions and said detected wheel driving conditions for computing distributed low values of driving forces to be distributed to each wheel; (b) means responsive to the computed distributed low values of driving forces to be distributed to each wheel for determining a normal range for at least one of said detected vehicle traveling conditions indicating normal operation of each wheel necessary for the vehicle to travel along a desired course; and (c) means responsive to said at least one of said detected traveling conditions being outside of said determined normal range for correcting said computed distributed low values of driving forces to be distributed to each wheel so as to reduce deviation of the travel of the vehicle from the desired course; and
- a plurality of motor drivers responsive to said computed distributed low values of driving forces to be distributed to each wheel, each motor driver being associated with one of said motors for independently controlling the associated motor to generate an output driving force that corresponds to said respective computed distributed low value of driving force from said driving force computing means.
|
| Background / Summary: |
Show background / summary
|
| Drawing Descriptions: |
Show drawing descriptions
|
| Description: |
Show description
|
| Forward References: |
Show 76 U.S. patent(s) that reference this one
|
