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Vehicle stability coefficient learning method, learning device and control device for vehicle

A technology of stability coefficient and learning method, which is applied in the field of vehicle stability coefficient learning

Inactive Publication Date: 2007-07-18
MITSUBISHI FUSO TRUCK AND BUS CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] However, the stability coefficient of the vehicle varies depending on the state of the vehicle (such as the position of the center of gravity, the tires, the rigidity of the vehicle, etc.), and when the above-mentioned fixed value is used, it may not be possible to perform appropriate vehicle control corresponding to various vehicle states. Happening

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  • Vehicle stability coefficient learning method, learning device and control device for vehicle
  • Vehicle stability coefficient learning method, learning device and control device for vehicle
  • Vehicle stability coefficient learning method, learning device and control device for vehicle

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Embodiment Construction

[0030] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0031] 1 to 8 are used to explain a vehicle stability coefficient learning method, a learning device, and a vehicle control device according to an embodiment of the present invention. Fig. 1 is a block diagram showing the configurations of the learning device and the vehicle control device, and Fig. A structural diagram of the brake system of the vehicle control device, FIG. 3 is a diagram illustrating the calculation of the target yaw rate used in the yaw moment control as the vehicle control, and FIG. 4(a) to FIG. 4(d) are explanatory Fig. 5(a) to Fig. 5(c) are diagrams illustrating the yaw moment control of the vehicle control, and Fig. 5(c) are diagrams illustrating the stable turning determination conditions of the learning method, and Fig. 6 is illustrating the learning method and the turning determination of the vehicle control. FIG. 7 is a flowchart illustrating...

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Abstract

The invention provides a technique for learning a stability factor of a vehicle by which the stability factor of the vehicle can be calculated in response to a state of the vehicle. To this end, a state of the vehicle during traveling is detected, and it is decided based on the detection information whether or not the current traveling state of the vehicle is a stable turning state. If it is decided that the current traveling state of the vehicle is a stable turning state, then the stability factor of the vehicle is calculated in accordance with a predetermined arithmetic operation expression based on a vehicle speed, a steering angle and a yaw rate detected during traveling, and the calculated value is determined as a learned value of the stability factor of the vehicle thereby to determine the stability factor in the current state of the vehicle.

Description

technical field [0001] The invention relates to a vehicle stability coefficient learning technology. Background technique [0002] As a prior art, there is known a technique that uses a stability factor of a vehicle to control the vehicle when the vehicle (hereinafter referred to as a vehicle) is running. [0003] For example, as a technology to control the state of the vehicle when turning, it has been developed to control the turning characteristics (yaw moment) of the vehicle by applying braking force to specific wheels when turning, correct the state of the turning direction of the vehicle when turning, and improve the vehicle's stability. Driving stability technology (for example, refer to Patent No. 3257354). [0004] In the technique of Patent Document 1, yaw moment control is performed based on a deviation between a target yaw rate calculated using a standard two-wheel model and an actual yaw rate detected by a sensor. At this time, in order to calculate the target...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B62D6/00B60G21/10B60K28/10B60R16/02B60T8/00B60T8/172B60T8/174B60T8/1755B60T8/24B60T8/58B60W40/10B60W40/12B62D37/00G06G7/70
CPCB60T8/17551B60W2520/10B60W2510/20B60W40/10B60T8/172B60W2520/14B60W2540/18B60T8/24
Inventor 坂田邦夫
Owner MITSUBISHI FUSO TRUCK AND BUS CORPORATION