Implementing method for front vehicle following

An implementation method, the technology of the front car, applied in the field of automotive active safety, can solve the problems of ride comfort, unevenness, control fluctuations of the vehicle, etc., and achieve the effect of improving comfort and safety and being easy to accept

Active Publication Date: 2015-06-03
苏州安智汽车零部件有限公司
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AI Technical Summary

Problems solved by technology

[0004] Although the existing vehicle-to-vehicle distance maintenance can ensure the safety between vehicles, for the driver, the control quality of the control process cannot meet the driver's acceptability.
Compared with the daily operation behavior of ordinary drivers, the control based on the ideal safe distance calculated purely through the vehicl

Method used

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  • Implementing method for front vehicle following
  • Implementing method for front vehicle following
  • Implementing method for front vehicle following

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Embodiment Construction

[0021] In the following, the specific implementation manners of the present invention will be further described in detail in conjunction with the accompanying drawings of the embodiments, so as to make the technical solution of the present invention easier to understand and grasp.

[0022] The purpose of the present invention is to provide a design method for the ideal following characteristics of a vehicle by imitating the following behavior of the preceding vehicle under the daily driving conditions of the driver.

[0023] The ideal following characteristic setting method of automobile among the present invention is summarized as follows: under the inter-vehicle distance control mode, ideal following characteristic curve is a special curve on the phase plane diagram of two relative distances, relative speeds, such as figure 2 shown. The phase plane diagram can be represented by the V-R diagram of the two vehicles, where V is the relative speed of the two vehicles, and R is ...

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Abstract

The invention discloses an implementing method for front vehicle following. The implementing method comprises the following steps of expressing following characteristics of vehicle distance control on a phase plane plot, wherein the transverse axis is the relative distance R of the two vehicles, and the vertical axis is the relative speed V of the two vehicles; adopting a straight line and curve combining method to determine an ideal target following characteristic curve in the phase plane plot; setting an ideal working point and a relatively ideal working point on the phase plane plot; adjusting the relative distance of the two vehicles in the front vehicle following way to approximate to the amplitude Ra; in the initial phase when the Ra is not reached, adopting the fixed acceleration and deceleration to approximate to the vehicle distance of the ideal working point; in the adjusting phase after the Ra is reached, reducing an accelerator or braking to reach the ideal working point, wherein the ideal working point is that the relative speed of the two vehicles is zero and the relative distance of the two vehicles is the ideal and safe vehicle distance set by a driver. The implementing method for the front vehicle following is applied into a vehicle cruising control system, so the comfortability and safety of the vehicle cruising control system are improved, and the easiness in accepting by the driver is realized.

Description

technical field [0001] The invention relates to a vehicle ideal following characteristic design method capable of reflecting the following behavior of a preceding vehicle under real traffic conditions of a driver, belongs to the field of automobile active safety, and can be better integrated into the development of a vehicle adaptive cruise control system. Background technique [0002] Automotive adaptive cruise control system (Adaptive Cruise Control, referred to as ACC system) is developed on the basis of traditional cruise control (Cruise Control System, referred to as CC system). , and at the same time perceive the traffic environment in front of the vehicle through radar and other on-board sensors, and can automatically apply the accelerator or brake to realize the longitudinal control of the vehicle, so that the vehicle and the vehicle in front maintain an appropriate safe distance. The adaptive cruise system can reduce the driver's operating burden and improve the dri...

Claims

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Application Information

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IPC IPC(8): B60W30/16
CPCB60W30/16
Inventor 郭健范达于泳
Owner 苏州安智汽车零部件有限公司
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