Tire pressure monitoring system of motor driven vehicle and method thereof
First Claim
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1. A tire pressure monitoring system of a motor driven vehicle, the system comprising:
- a resolver for detecting a speed of a motor which generates a driving torque;
a wheel speed sensor for detecting a wheel speed of wheels which rotate by the driving torque generated by the motor;
a transmission for decelerating the driving torque generated at the motor; and
a controller configured to compare a first target wheel speed calculated using the motor speed detected by the resolver with the wheel speed detected by the wheel speed sensor and configured to determine a status of a tire, when a wheel slip ratio is less than a predetermined value,wherein the controller calculates the first target wheel speed by using the motor speed detected by the resolver, a wheel radius, and a gear ratio of the transmission corresponding to a shift speed.
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Abstract
A tire pressure monitoring system includes a resolver for detecting a motor speed generating driving torque. A wheel speed sensor detects a wheel speed of wheels rotated by the driving torque generated at the motor. A transmission decelerates the driving torque generated at the motor. A controller is configured to compare a first target wheel speed calculated using the motor speed detected by the resolver to the wheel speed sensor detected by the wheel speed sensor and determining a status of a tire, when a wheel slip ratio is less than a predetermined value.
15 Citations
14 Claims
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1. A tire pressure monitoring system of a motor driven vehicle, the system comprising:
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a resolver for detecting a speed of a motor which generates a driving torque; a wheel speed sensor for detecting a wheel speed of wheels which rotate by the driving torque generated by the motor; a transmission for decelerating the driving torque generated at the motor; and a controller configured to compare a first target wheel speed calculated using the motor speed detected by the resolver with the wheel speed detected by the wheel speed sensor and configured to determine a status of a tire, when a wheel slip ratio is less than a predetermined value, wherein the controller calculates the first target wheel speed by using the motor speed detected by the resolver, a wheel radius, and a gear ratio of the transmission corresponding to a shift speed. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A tire pressure monitoring method of a motor driven vehicle, in which a resolver detects a motor speed generating a driving torque, a wheel speed sensor detects a wheel speed of wheels rotated by the driving torque generated at the motor, and a controller determines a status of a tire from a signal detected by the resolver and the wheel speed sensor, the method comprising steps of:
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calculating a first target wheel speed by using a motor speed detected by the resolver; determining whether a wheel slip ratio is greater than a predetermined value; and determining whether a difference between the first target wheel speed and a real wheel speed detected by the wheel speed sensor is greater than a predetermined value, wherein the controller calculates the first target wheel speed by using the motor speed detected by the resolver, a wheel radius, and a gear ratio of a transmission corresponding to a shift speed. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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Specification