Slip control system for a vehicle
First Claim
1. A slip control system for a vehicle, comprising:
- a torque adjusting means for adjusting torque to be applied to a driven wheel;
a slip-value detecting means for detecting a slip value of the driven wheel on a road surface;
a first control means for subjecting the torque adjusting means to feedback control so as to allow the slip value of the driven wheel to reach a predetermined target value in response to output from the slip-value detecting means;
a second control means for reducing the torque to be applied to the driven wheel temporarily by a predetermined decrement by controlling the torque adjusting means prior to the first control means when the slip value detected by the slip-value detecting means reaches a first judgment value set as a value greater than the predetermined target value; and
a third control means for reducing the torque to be applied to the driven wheel gradually by controlling the torque adjusting means prior to the first control means when the slip value detected by the slip-value detecting means does not reach a second judgment value set as a value smaller than the first judgment value even if a predetermined period of time elapses after start of control by the second control means.
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Accused Products
Abstract
A slip control system for a vehicle contains a first control unit for implementing feedback control of torque applied to the driven wheels so as to allow an actual slip value of the driven wheel to reach a predetermined target value. There are set a first judgment value larger than the target value and a second judgment value smaller than the first judgment value. A second control unit is provided for temporarily reducing the torque applied to the driven wheel by a predetermined decrement, in place of the feedback control, when the actual slip value reaches the first judgment value or larger than the first judgment value. There is further provided a third control unit for gradually reducing the torque applied to the driven wheel, in place of the feedback control, when the actual slip value of the driven wheel does not reach the second judgment value or a value smaller than the second judgment value even if a predetermined period of time elapses after start of control by the second control unit.
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Citations
22 Claims
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1. A slip control system for a vehicle, comprising:
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a torque adjusting means for adjusting torque to be applied to a driven wheel; a slip-value detecting means for detecting a slip value of the driven wheel on a road surface; a first control means for subjecting the torque adjusting means to feedback control so as to allow the slip value of the driven wheel to reach a predetermined target value in response to output from the slip-value detecting means; a second control means for reducing the torque to be applied to the driven wheel temporarily by a predetermined decrement by controlling the torque adjusting means prior to the first control means when the slip value detected by the slip-value detecting means reaches a first judgment value set as a value greater than the predetermined target value; and a third control means for reducing the torque to be applied to the driven wheel gradually by controlling the torque adjusting means prior to the first control means when the slip value detected by the slip-value detecting means does not reach a second judgment value set as a value smaller than the first judgment value even if a predetermined period of time elapses after start of control by the second control means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification