Driving Processing Method, Vehicle, Terminal, Server, System and Storage Medium
US-2022009488-A1 · Jan 13, 2022 · US
Method for vehicle following control based on real-time calculation of dynamic safe following distance
US11345346B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11345346-B2 |
| Application number | US-202017026228-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 20, 2020 |
| Priority date | Jul 6, 2018 |
| Publication date | May 31, 2022 |
| Grant date | May 31, 2022 |
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- Title
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Abstract
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A method for vehicle following control based on the real-time calculation of dynamic safe following distance. A preset vehicle deceleration model with three preset behavior adjustment parameters is used to obtain the absolute braking distance models of the leading and following vehicles, then to further establish the dynamic safe following distance model for calculating the dynamic safe following distance between the following vehicle and the leading vehicle in real time. In the process of vehicle following operation, the current dynamic safe following distance is compared with the current actual following distance to determine whether to adjust the following behavior of the following vehicle and how to control the following vehicle to move in safety, efficiency and smoothness.
First claim
Opening claim text (preview).
What is claimed is: 1. A method for vehicle following control based on real-time calculation of dynamic safe following distance, comprising: (1) establishing a dynamic safe following distance model for vehicle following control; wherein the dynamic safe following distance model is established through steps of: (1.1) according to a preset control requirement of a vehicle braking from an initial velocity until it stops completely, obtaining a first preset behavior adjustment parameter and a second preset behavior adjustment parameter according to equation (1): { max ( a ) = k ( v 0 2 + δ ) max ( da dt ) = 4 9 k 2 ( v 0 2 + δ ) ; ( 1 ) wherein v 0 is an initial velocity when the vehicle starts to brake and decelerate; k is the first preset behavior adjustment parameter; δ is the second preset behavior adjustment parameter; a is an acceleration of the vehicle; max( ) is a function that returns a maximum value; and max(|a|) and max ( da dt ) reflect control requirements for the vehicle to brake smoothly and rapidly; (1.2) calculating a third preset behavior adjustment parameter by substituting values of the first preset behavior adjustment parameter and the second preset behavior adjustment parameter into a preset vehicle deceleration model; the preset vehicle deceleration model is expressed by equation (2): v ( t ) = - ( v 0 2 + δ ) tanh ( k ( t - τ ) ) + v 0 2 ; ( 2
Assignees
Inventors
Classifications
- B60W30/165Primary
Automatically following the path of a preceding lead vehicle, e.g. "electronic tow-bar" · CPC title
- B60W30/16Primary
Control of distance between vehicles, e.g. keeping a distance to preceding vehicle · CPC title
for vehicle-to-vehicle communication [V2V] · CPC title
Speed · CPC title
of positioning data, e.g. GPS [Global Positioning System] data · CPC title
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- What does patent US11345346B2 cover?
- A method for vehicle following control based on the real-time calculation of dynamic safe following distance. A preset vehicle deceleration model with three preset behavior adjustment parameters is used to obtain the absolute braking distance models of the leading and following vehicles, then to further establish the dynamic safe following distance model for calculating the dynamic safe followi…
- Who is the assignee on this patent?
- Univ Tongji
- What technology area does this patent fall under?
- Primary CPC classification B60W30/165. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue May 31 2022 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 6 related publications on this page (citations in our corpus or others sharing the same primary CPC).