Title: Speed homing method for four wheel driving electric automobile
Application Number: 200610147469 Application Date: 2006.12.19
Publication Number: 1987483 Publication Date: 2007.06.27
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: G01P3/00
Applicant(s) Name: Shanghai Fuel Cell Automobile Power System Co., Lt Address:
Inventor(s) Name: Wan Gang;Yu Zhuoping;Zuo Jianling;Zhang Lijun;Xion
Attorney & Agent: wubao gen
Abstract:
    The method includes steps: based on wheel speed measured by the wheel speed sensor, actual output moment of motor, and magnitude of vertical load of wheel speed to calculate out utilization attachment coefficient of each wheel; using utilization attachment coefficient and difference between each wheel speed to estimate slip rate of each wheel so as to estimate speed of car. The invention can estimate information of speed of car accurately, makes estimation of slip rate closer to actual value. Thus, vehicle stability control device can play better control effect.
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