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Method for controlling an adaptive cruise control system and associated control system

A regulation system and distance control technology, applied in control/regulation systems, road vehicle drive control systems, control devices, etc., can solve problems such as instrument panel unit value corruption and insufficient operational reliability

Inactive Publication Date: 2012-05-30
RENAULT SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] In practice, however, there is a risk of corruption of the unit value transmitted by the dashboard
Precisely, depending on the direction of switching, an untimely switching of the speed unit when the ACC system is activated may result in untimely acceleration or deceleration
[0014] This leads to deficiencies in terms of operational reliability

Method used

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  • Method for controlling an adaptive cruise control system and associated control system
  • Method for controlling an adaptive cruise control system and associated control system
  • Method for controlling an adaptive cruise control system and associated control system

Examples

Experimental program
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Embodiment Construction

[0021] Refer to attached figure 2 , considering the initial condition S of the vehicle whose ACC system should be actuated 1 . The control according to the invention is meaningful only when the ACC system has actually been actuated, it being verified in advance that this condition is met (step S 2 ), the regulation computer 10 thus receives information about the speed setting selected by the driver and the speed unit sent by the dashboard computer 20 if the condition is met. According to the invention, an item of information related to the unit of speed is stored (step S 3 ). Step S 4 to S 5 Used to verify that the speed unit sent by the dashboard computer 20 remains suitably constant throughout the time the ACC system is actuated, in other words, to verify that it is always equal to step S 3 Velocity units stored in . In the opposite case, an item of information related to the absence of units is generated by the regulating computer 10 (step S 7 ). Once the ACC syst...

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PUM

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Abstract

The invention relates to the control of a motor vehicle adaptive cruise control system in which a computer of said control system receives a set point speed value and information relating to the speed unit from an instrument panel computer via a CAN bus. According to the invention, the information relating to the speed unit received at the moment of activation of the cruise control system is stored in memory (S3), and throughout the time for which the cruise control system is activated, any change in the information relating to the speed unit received by comparison with the information stored in memory is monitored (S4 to S6). If need be, an information item relating to a speed unit fault is generated (S7).

Description

technical field [0001] The present invention relates to speed regulation systems with distance control or ACC systems (acronym for "Adaptive Cruise Control") fitted to certain motor vehicles. Background technique [0002] On the one hand, the ACC system allows the driver of the motor vehicle to select the cruising speed at which the vehicle will travel without having to keep his foot on the accelerator pedal; vehicles to maintain a safe distance. [0003] Therefore, if figure 1 Schematically shown, the ACC system conventionally comprises a regulating computer 10 connected to other computers (instrument panel Controller 20, braking system controller 30 and engine controller 40); Telemetry sensor 11, telemetry sensor 11 is for example LIDAR (Light Detection And Ranging (light detection and fixed distance, lidar)) type or radar type, and it can A signal is sent, on the basis of which the control computer can detect the presence of a vehicle or an obstacle on the road scene i...

Claims

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Application Information

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IPC IPC(8): B60K31/04B60W30/16B60W30/14B60W50/02
CPCB60W50/02B60K31/042B60W30/14B60W30/16B60W30/143B60W40/105B60W2720/10B60Y2300/143B60Y2300/16B60W2754/30
Inventor M·马莱特
Owner RENAULT SA