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Yaw stability control system

A stability control and yaw technology, which is applied to automatic steering control components, brakes, vehicle components, etc., can solve problems such as yaw rate errors

Inactive Publication Date: 2013-07-17
VOLVO CAR CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] However, the driving of such an experienced driver can lead to small yaw rate errors in the yaw stability control system, often below the threshold value of the yaw stability control system, so that the yaw stability control system will not Execute yaw stability control intervention
Thus, the friction between the vehicle's rear axle tires and the road will not be used optimally

Method used

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Embodiment Construction

[0020] Other objects and features of the present invention will become apparent from the following detailed description in conjunction with the accompanying drawings. However, it should be understood that the drawings are only designed for the purpose of illustration and not as a limitation of the present invention, and the scope of the present invention should be defined with reference to the appended claims. It should be further understood that the drawings are not necessarily drawn to scale and, unless otherwise indicated, are only meant to conceptually illustrate the structures and steps described herein. The same reference numerals will be used to describe corresponding features in the different drawings.

[0021] The invention is based on the fact that the driver of the vehicle is very sensitive to the steering wheel torque through tactile sensation in such a way that the driver knows the torque corresponding to a certain combination of curvature and vehicle speed. Thus...

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Abstract

The present invention relates to a yaw stability control system for a vehicle equipped with electric power assisted steering and a method of controlling it. The system comprises: means (10) for determining the occurrence of understeer; means for determining the degree of understeer after the occurrence of understeer is determined; means (20) for determining if the determined degree of understeer exceeds a threshold value; means (30) for saving the steering wheel torque value and steering wheel angle value when determined that a calculated drop in steering wheel torque (8) exceeds the threshold value; means for calculating a delta steering wheel torque (3), delta steering wheel angle (9) and updating the steering wheel angle (6) at the start of delta torque calculation; means for applying the calculated delta steering wheel torque (3) to the steering of the vehicle; means for calculating a driver intended steering wheel angle (5) and using it for controlling yaw stability control operations.

Description

technical field [0001] The present invention relates to a yaw stability control system for vehicles equipped with electric power steering. Furthermore, the invention relates to a method of controlling a yaw stability control system of a vehicle equipped with electric power steering. Background technique [0002] There are currently several vehicle control systems for increasing the driving ability of a driver of a vehicle. These control systems include anti-lock braking system (ABS), traction control system (TCS) and stability control. An example stability control system is an electronic stability control (ESC) system or sometimes called a yaw stability control (YSC) system. This type of system is also sometimes called an electronic stability program (ESC) system or a dynamic stability traction control (DSTC) system. [0003] Stability control systems are used to maintain controlled and stable vehicle operation for improved vehicle and passenger safety. Stability control...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60W30/045B60W10/20B60W40/00B62D6/00B62D101/00B62D113/00B62D119/00B60W30/02
CPCB60W30/045B62D6/008B62D6/003B60T8/1755
Inventor 约翰·赫尔登本杰特·杰考布森内纳德·拉齐克
Owner VOLVO CAR CORP
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