Slip suppression control system for vehicle
First Claim
1. A slip suppression control system for a vehicle comprising:
- a monitored value detecting device for detecting a monitored value corresponding to a difference between a rotational speed of a front wheel of the vehicle and a rotational speed of a rear wheel of the vehicle;
a threshold determiner unit configured to determine a relationship between the monitored value detected by the monitored value detecting device and plural thresholds; and
a controller configured to execute traction control for reducing a driving power of a drive wheel based on determination of the threshold determiner unit;
wherein the plural thresholds have at least first and second thresholds, and the second threshold is set larger than the first threshold;
wherein the traction control includes an amount-change-based control such that a parameter corresponding to the driving power in a state where the traction control is being executed is made smaller in a case where the monitored value is larger than the second threshold than in a case where the monitored value is larger than the first threshold and smaller than the second threshold;
wherein the traction control includes initial traction control and continued traction control executed continuously after the initial traction control;
wherein in the initial traction control, the amount-change-based control is performed, and the parameter is controlled to be a constant value in a period when a magnitude relationship between the monitored value and the plural thresholds continues to be unchanged; and
wherein in the continued traction control, the parameter is feedback-controlled so that the monitored value is closer to a target value.
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Accused Products
Abstract
A slip suppression control system for a vehicle comprises a monitored value detecting device for detecting a monitored value corresponding to a difference between a rotational speed of a front wheel of the vehicle and a rotational speed of a rear wheel of the vehicle; a threshold determiner unit configured to determine a relationship between the monitored value detected by the monitored value detecting device and plural thresholds; and a controller configured to execute traction control for reducing a driving power of a drive wheel based on determination of the threshold determiner unit; wherein the plural thresholds have at least first and second thresholds, and the second threshold is set larger than the first threshold; and wherein the traction control includes an amount-change-based control.
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Citations
13 Claims
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1. A slip suppression control system for a vehicle comprising:
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a monitored value detecting device for detecting a monitored value corresponding to a difference between a rotational speed of a front wheel of the vehicle and a rotational speed of a rear wheel of the vehicle; a threshold determiner unit configured to determine a relationship between the monitored value detected by the monitored value detecting device and plural thresholds; and a controller configured to execute traction control for reducing a driving power of a drive wheel based on determination of the threshold determiner unit; wherein the plural thresholds have at least first and second thresholds, and the second threshold is set larger than the first threshold; wherein the traction control includes an amount-change-based control such that a parameter corresponding to the driving power in a state where the traction control is being executed is made smaller in a case where the monitored value is larger than the second threshold than in a case where the monitored value is larger than the first threshold and smaller than the second threshold; wherein the traction control includes initial traction control and continued traction control executed continuously after the initial traction control; wherein in the initial traction control, the amount-change-based control is performed, and the parameter is controlled to be a constant value in a period when a magnitude relationship between the monitored value and the plural thresholds continues to be unchanged; and wherein in the continued traction control, the parameter is feedback-controlled so that the monitored value is closer to a target value. - View Dependent Claims (2, 3, 4, 5)
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6. A slip suppression control system for a vehicle, comprising:
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a monitored value detecting device for detecting a monitored value corresponding to a difference between a rotational speed of a front wheel of the vehicle and a rotational speed of a rear wheel of the vehicle; a threshold determiner unit configured to determine a relationship between the monitored value detected by the monitored value detecting device and plural thresholds; and a controller configured to execute traction control for reducing a driving power of a drive wheel based on determination of the threshold determiner unit; a vehicle speed sensor configured to detect a vehicle body speed; and a gear position sensor configured to detect a transmission gear position of a transmission; wherein the plural thresholds have at least first and second thresholds, and the second threshold is set larger than the first threshold; wherein the traction control includes an amount-change-based control such that a parameter corresponding to the driving power in a state where the traction control is being executed is made smaller in a case where the monitored value is larger than the second threshold than in a case where the monitored value is larger than the first threshold and smaller than the second threshold; and wherein the threshold determiner unit is configured to change the start threshold according to information detected by the vehicle speed sensor and information detected by the gear position sensor. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13)
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Specification