Traction Control System and Sensor Unit Thereof
First Claim
1. A traction control system for a vehicle which is constituted so as to drive an engine throttle drive actuator according to a result of sensing an accelerator operation state of the vehicle and thereby cause a target drive force to be generated, the traction control system comprising:
- a sensor unit disposed in a rotation mechanism section including a body of rotation positioned in the vehicle body side, for securing a wheel and allowing the wheel to rotate, and the wheel, the sensor unit sensing a first acceleration generated in association with rotation in a direction orthogonal to the rotation axis, and a second acceleration generated in a direction of rotation, and converting a sensing results of the first and second accelerations to a digital value, and transmitting digital data including the digital value;
a monitor apparatus which receives the digital data transmitted from the sensor unit to acquire the sensing results of the first and second accelerations; and
drive means which drives the engine throttle drive actuator based on the sensing results of the first and second accelerations acquired by the monitor apparatus.
1 Assignment
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Accused Products
Abstract
The invention provides a traction control system and sensor unit thereof which easily and highly accurately senses accelerations generated vertically, longitudinally and laterally in a wheel to control the drive of the vehicle. A sensor unit provided with an acceleration sensor sensing accelerations generated in association with rotation in the X, Y and Z directions including the rotation direction is disposed in a body of rotation of a rotation mechanism section including each tire NO, and the sensing result, a digital value, is transmitted as digital data by use of radio wave. The digital data is received by a monitor apparatus disposed in each tire house and is subjected to arithmetic processing. The acceleration value thus obtained is outputted to a drive control unit. Based on the acceleration value obtained and distortion characteristic data preliminarily stored, the drive control unit estimates the amount of distortion of each tire, and based on the estimated amount of tire distortion and the sensing result of the number of rotations of each tire, controls a sub-throttle actuator to drive a sub-throttle.
13 Citations
28 Claims
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1. A traction control system for a vehicle which is constituted so as to drive an engine throttle drive actuator according to a result of sensing an accelerator operation state of the vehicle and thereby cause a target drive force to be generated, the traction control system comprising:
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a sensor unit disposed in a rotation mechanism section including a body of rotation positioned in the vehicle body side, for securing a wheel and allowing the wheel to rotate, and the wheel, the sensor unit sensing a first acceleration generated in association with rotation in a direction orthogonal to the rotation axis, and a second acceleration generated in a direction of rotation, and converting a sensing results of the first and second accelerations to a digital value, and transmitting digital data including the digital value; a monitor apparatus which receives the digital data transmitted from the sensor unit to acquire the sensing results of the first and second accelerations; and drive means which drives the engine throttle drive actuator based on the sensing results of the first and second accelerations acquired by the monitor apparatus. - View Dependent Claims (2, 3, 4, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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5. A traction control system for a vehicle which is constituted so as to drive each drive actuator of an engine throttle and a drive torque distribution mechanism according to a result of sensing an accelerator operation state of the vehicle and thereby cause a target drive force to be generated, the traction control system comprising:
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a plurality of sensor units disposed in each of a plurality of rotation mechanism sections including a body of rotation positioned in the vehicle body side, for securing a wheel and allowing the wheel to rotate, and the wheel, respectively, the plurality of sensor units sensing a first acceleration generated in association with rotation in a direction orthogonal to the rotation axis, and a second acceleration generated in a direction of rotation, and converting a sensing results of the first and second accelerations to a digital value, and transmitting digital data including the digital value; a monitor apparatus which receives the digital data transmitted from the plurality of sensor units to acquire the sensing results of the first and second accelerations; and control means which controls the drive of a predetermined one from among each said drive actuator based on the sensing results of the first and second accelerations acquired by the monitor apparatus. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12)
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28. A sensor unit which senses an acceleration generated in association with rotation, disposed in a rotation mechanism section including a body of rotation positioned in the vehicle body side, for securing a wheel and allowing the wheel to rotate, and the wheel, the sensor unit being included in a traction control system for a vehicle which is constituted so as to drive an engine throttle drive actuator according to a result of sensing an accelerator operation state of the vehicle and thereby cause a target drive force to be generated, the sensor unit comprising:
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means which senses a first acceleration generated in association with rotation in a direction orthogonal to the rotation axis, and a second acceleration generated in a direction of rotation; means which converts the sensing results of the first acceleration and the second acceleration to a digital value; and means which transmits digital data including the digital value.
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Specification