| 摘要 |
PROBLEM TO BE SOLVED: To provide a slip control device for an electric vehicle which determines slip with good accuracy by using only a rotary angle sensor for rotation control of a motor as sensors, and which can perform quick control for eliminating the slip.SOLUTION: Threshold value calculation means 21 for acquiring a threshold value by calculating angular acceleration for a motor to rotate from an operation amount of an accelerator, and angular acceleration calculation means 22 for calculating the angular acceleration by differentiating a detection value of a rotary angle sensor 3a twice are provided. Slip determination means 23 for determining that a wheel 7 driven by the motor 3 has slipped, and slip time torque restriction means 25 for restricting torque when it is determined that slip has occurred are provided. The slip determination means 23 determines the angular acceleration and the threshold value by an angular acceleration comparison unit 26. The successive number of times in which the number of times of determination for exceeding the threshold value continues is counted, and when the successive number of times reaches a set value, it is determined that the slip has occurred. |
