发明名称 |
METHOD OF CONTROLLING CREEP TORQUE IN MOTOR DRIVEN VEHICLE |
摘要 |
A method of controlling creep torque in a motor driven vehicle is disclosed herein. In this method, a downhill gradient of a road is calculated. A filter time constant is calculated using the downhill gradient, a predetermined basic creep torque, a set speed and a compensation coefficient of the predetermined basic creep torque corresponding to the set speed. At a variable control step, the calculated filter time constant is applied to a filter, the predetermined basic creep torque is input to the filter, and a motor is controlled based on a torque value output from the filter as a request torque. |
申请公布号 |
US2015360584(A1) |
申请公布日期 |
2015.12.17 |
申请号 |
US201414539147 |
申请日期 |
2014.11.12 |
申请人 |
Hyundai Motor Company ;Kia Motors Corporation |
发明人 |
Jung Jae Won |
分类号 |
B60L15/20 |
主分类号 |
B60L15/20 |
代理机构 |
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代理人 |
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主权项 |
1. A method of controlling creep torque in a motor driven vehicle, comprising:
calculating a downhill gradient of a road; calculating a filter time constant using the downhill gradient and a predetermined basic creep torque; and a variable control step of applying the calculated filter time constant to a filter, inputting the predetermined basic creep torque to the filter, and controlling a motor of the motor driven vehicle based on a torque value output from the filter as a request torque, wherein the variable control step comprises:
applying the calculated filter time constant to the filter;producing basic gradeability by multiplying the predetermined creep torque with a gear ratio divided by a radius of a tire;inputting the basic gradeability to the filter; andcontrolling the motor based on the required gradeability output from the filter. |
地址 |
Seoul KR |