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Banked Curve Detection Method Using Vertical Acceleration and Lateral Acceleration

A technology of lateral acceleration and vertical acceleration, which is applied in steering mechanism, transportation and packaging, steering mechanism of deflectable wheels, etc. It can solve the problems that the acceleration value does not meet the expected value and ESC cannot fully function.

Active Publication Date: 2019-05-10
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in instances where the vehicle is driven on a banked curve, the acceleration values ​​and other information provided to the ESC are not as expected
Therefore, under such conditions, ESC is usually not fully functional

Method used

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  • Banked Curve Detection Method Using Vertical Acceleration and Lateral Acceleration
  • Banked Curve Detection Method Using Vertical Acceleration and Lateral Acceleration
  • Banked Curve Detection Method Using Vertical Acceleration and Lateral Acceleration

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Embodiment Construction

[0016] Before any embodiments of the invention are explained in detail, it is to be understood that the invention is not limited in its application to the details of construction and arrangement of components set forth in the following description or illustrated in the following drawings. The invention is capable of other embodiments and of being practiced or being carried out in various ways.

[0017] figure 2 The banked curve detection system 30 shown in FIG. 2 includes an electronic stability control (ESC) 34 . The ESC 34 operates to control vehicle stability and includes a processor and memory. ESC 34 is known to minimize sideslip to prevent vehicle rollover and otherwise stabilize vehicle operation.

[0018] The banked curve detection system 30 includes a yaw rate sensor 38 , a steering angle sensor 40 and a wheel speed sensor 42 . The yaw rate sensor 38 detects understeer and oversteer of the vehicle. Typically, the wheel speed sensor 42 has a sensing device provide...

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Abstract

A banked curve detection system determines the presence of a vehicle on a banked curve by sensing the vehicle's vertical acceleration and lateral acceleration. A banked curve is determined when each of the vertical acceleration and lateral acceleration is greater than a previously sensed vertical acceleration and lateral acceleration, the lateral acceleration is less than an expected reference lateral acceleration value, and the vertical acceleration is greater than gravity . The reference lateral acceleration value is based on yaw rate, steering angle and wheel speed. When acceleration conditions are met, the electronic stability control adjusts parameters due to the vehicle being driven on a banked curve. Once acceleration conditions are no longer valid, the electronic stability control returns to normal operation.

Description

Background technique [0001] The present invention relates to a method and apparatus for detecting banked curve driving conditions to maintain operation of electronic stability control of a vehicle driving on banked curves. [0002] Electronic Stability Control (ESC) senses vehicle conditions and provides stability control to prevent vehicle rollover, reduce sideslip and maintain vehicle control during cornering. However, in instances where the vehicle is driven on a banked curve, acceleration values ​​and other information provided to the ESC are not as expected. Therefore, under such conditions, the ESC is usually not fully functional. [0003] figure 1 A vehicle 20 is shown disposed on a banked curve 22 having a banked curve at an angle α relative to the horizontal. Inclined bend 22 also has the inability to figure 1 The banked curve radius R (the sharpness of the turn of the road with the banked curve) is illustrated in and defines the degree of curvature of the curve. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60T8/1755
CPCB60T8/17551B60T2210/22B60W30/02B60W40/06B60W2520/125B60W40/072B60W40/109B60W40/114B60Y2400/3032B60W2520/14B60W2520/28B60W2540/18B62D9/02B60G2400/252B60G21/007
Inventor H.钱达M.科瓦莱夫斯基
Owner ROBERT BOSCH GMBH
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