Vehicle running control device
First Claim
1. A device for controlling a running condition of a vehicle having a vehicle body and a first yaw moment generating apparatus that generates a yaw moment thereon, the device comprising:
- a portion that judges a running condition of the vehicle; and
a portion that executes a running stability control of the vehicle through generating a stabilizing yaw moment to the vehicle by operating the first yaw moment generating apparatus when the running condition is judged to be unstable;
a second yaw moment generating apparatus that generates a yaw moment on the vehicle body and a detector that detects an actual yaw rate of the vehicle;
the device further comprising;
a portion that calculates a target yaw rate for the vehicle based upon a driver'"'"'s operation and a yaw rate deviation integration value calculating portion that calculates an integration value of yaw rate deviations between the actual and target yaw rates;
the yaw rate deviation integration value calculating portion calculating a yaw rate deviation between the actual and target yaw rates every predetermined period and calculating the integration value by integrating a current yaw rate deviation to an integration value of yaw rate deviations obtained in a preceding period while reducing weights of the yaw rate deviations of preceding period relative to a weight of the yaw rate deviation at a present period; and
a portion that executes a control of correcting a yaw direction of the vehicle body through generating a direction correcting yaw moment based upon the integration value of the deviations between the yaw rates by operating the second yaw moment generating apparatus;
wherein the integration value is given by summing the yaw rate deviation at the present period and a value obtained by multiplying an intergration value calculated in periods before the present period by a forgetting factor.
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Accused Products
Abstract
There is provided a new and novel vehicle running control device for correcting a yaw angle of a vehicle toward the yaw direction intended by a driver, together with vehicle stability control, through generating yaw moments. In order to accomplish the yaw angle correction, the inventive device operates a yaw moment generating apparatus e.g. a steering apparatus, so as to generate a direction correcting yaw moment based upon an integration value of the deviations between an actual yaw rate and its target value. The direction correcting yaw moment may be generated for correcting the yaw angle deviation remaining after the stability control is ended.
17 Citations
8 Claims
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1. A device for controlling a running condition of a vehicle having a vehicle body and a first yaw moment generating apparatus that generates a yaw moment thereon, the device comprising:
- a portion that judges a running condition of the vehicle; and
a portion that executes a running stability control of the vehicle through generating a stabilizing yaw moment to the vehicle by operating the first yaw moment generating apparatus when the running condition is judged to be unstable;
a second yaw moment generating apparatus that generates a yaw moment on the vehicle body and a detector that detects an actual yaw rate of the vehicle;
the device further comprising;
a portion that calculates a target yaw rate for the vehicle based upon a driver'"'"'s operation and a yaw rate deviation integration value calculating portion that calculates an integration value of yaw rate deviations between the actual and target yaw rates;
the yaw rate deviation integration value calculating portion calculating a yaw rate deviation between the actual and target yaw rates every predetermined period and calculating the integration value by integrating a current yaw rate deviation to an integration value of yaw rate deviations obtained in a preceding period while reducing weights of the yaw rate deviations of preceding period relative to a weight of the yaw rate deviation at a present period; and
a portion that executes a control of correcting a yaw direction of the vehicle body through generating a direction correcting yaw moment based upon the integration value of the deviations between the yaw rates by operating the second yaw moment generating apparatus;
wherein the integration value is given by summing the yaw rate deviation at the present period and a value obtained by multiplying an intergration value calculated in periods before the present period by a forgetting factor. - View Dependent Claims (2, 3, 4, 5, 6, 7)
- a portion that judges a running condition of the vehicle; and
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8. A device for controlling a running condition of a vehicle having a vehicle body and a first yaw moment generating apparatus that generates a yaw moment thereon, the device comprising:
- a portion that judges a running condition of the vehicle; and
a portion that executes a running stability control of the vehicle through generating a stabilizing yaw moment to the vehicle by operating the first yaw moment generating apparatus when the running condition is judged to be unstable;
a second yaw moment generating apparatus that generates a yaw moment on the vehicle body and a detector that detects an actual yaw rate of the vehicle;
the device further comprising;
a portion that calculates a target yaw rate for the vehicle based upon a driver'"'"'s operation and a yaw rate deviation integration value calculating portion that calculates an integration value of yaw rate deviations between the actual and target yaw rates;
the yaw rate deviation integration value calculating portion iteratively calculating a yaw rate deviation between the actual and target yaw rates and calculating the integration value by integrating a current yaw rate deviation to an integration value of yaw rate deviations obtained in a preceding period while reducing weights of the yaw rate deviations of preceding periods relative to a weight of the yaw rate deviation at a present iteration; and
a portion that executes a control of correcting a yaw direction of the vehicle body through generating a direction correcting yaw moment based upon the integration value of the deviations between the yaw rates by operating the second yaw moment generating apparatus;
wherein the integration value is given by summing the yaw rate deviation at the present period and a value obtained by multiplying an integration value calculated in periods before the present period by a forgetting factor.
- a portion that judges a running condition of the vehicle; and
Specification