EP1536994A1 - Procede de controle de fonctions et de composants de chassis - Google Patents

Procede de controle de fonctions et de composants de chassis

Info

Publication number
EP1536994A1
EP1536994A1 EP03794919A EP03794919A EP1536994A1 EP 1536994 A1 EP1536994 A1 EP 1536994A1 EP 03794919 A EP03794919 A EP 03794919A EP 03794919 A EP03794919 A EP 03794919A EP 1536994 A1 EP1536994 A1 EP 1536994A1
Authority
EP
European Patent Office
Prior art keywords
vehicle
chassis
driving conditions
functions
information
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP03794919A
Other languages
German (de)
English (en)
Inventor
Rüdiger MAHLO
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Continental Teves AG and Co OHG
Original Assignee
Continental Teves AG and Co OHG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Continental Teves AG and Co OHG filed Critical Continental Teves AG and Co OHG
Publication of EP1536994A1 publication Critical patent/EP1536994A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
    • B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
    • B60G17/0195—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by the regulation being combined with other vehicle control systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
    • B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
    • B60G17/018—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by the use of a specific signal treatment or control method
    • B60G17/0185—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by the use of a specific signal treatment or control method for failure detection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/17—Using electrical or electronic regulation means to control braking
    • B60T8/172—Determining control parameters used in the regulation, e.g. by calculations involving measured or detected parameters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2600/00—Indexing codes relating to particular elements, systems or processes used on suspension systems or suspension control systems
    • B60G2600/08—Failure or malfunction detecting means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2800/00—Indexing codes relating to the type of movement or to the condition of the vehicle and to the end result to be achieved by the control action
    • B60G2800/80—Detection or control after a system or component failure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T2260/00—Interaction of vehicle brake system with other systems
    • B60T2260/06—Active Suspension System
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
    • B60W50/02—Ensuring safety in case of control system failures, e.g. by diagnosing, circumventing or fixing failures
    • B60W50/0205—Diagnosing or detecting failures; Failure detection models
    • B60W2050/021—Means for detecting failure or malfunction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
    • B60W50/02—Ensuring safety in case of control system failures, e.g. by diagnosing, circumventing or fixing failures

Definitions

  • the present invention relates to a method for monitoring chassis functions and chassis components of a motor vehicle and / or for detecting wear, wear trends, component defects or deteriorating functions.
  • the design of the maintenance intervals is generally based on the mileage or the service life of a vehicle.
  • modern solutions offer an extension of the usual interval times by means of computer-aided evaluation of vehicle stress.
  • the engine load is primarily used to assess vehicle stress.
  • the invention is therefore based on the object of overcoming the disadvantages of conventional monitoring methods described and of developing a method which enables monitoring of chassis functions and chassis components which can be carried out with relatively little effort.
  • the invention is therefore based on the knowledge that the evaluation of the information that is available in today's vehicles with electronic control systems, such as ABS, ASR, ESP, etc., due to the diverse sensor system, offers the possibility of a driving dynamics evaluation algorithm for solving the described To develop problems.
  • the following signals which the sensors of an electronic brake system, such as ABS, ASR, ESP, etc., which are present in the vehicle, provide exclusively or for recognizing the vehicle or driving states and for carrying out the driving dynamic evaluations can be used together with the signals from additional sensors, in particular also from sensors of chassis-specific control systems:
  • a further exemplary embodiment of the method according to the invention consists in that one or more of the following reproducible specific vehicle or driving states is based on the pattern recognition on the basis of the information provided by the control systems present in the vehicle and / or which are obtained with additional sensors
  • the recognized specific vehicle or driving conditions and / or defect-related anomalies typical of the situation are taken into account when evaluating and evaluating the information.
  • the evaluation of the recognized vehicle or driving conditions and / or the defect-related anomalies typical of the situation takes place expediently only if the vehicle or driving conditions meet predetermined, qualitative and quantitative boundary conditions or reach predetermined limit values.
  • a signal constellation For the assessment of the state of wear of the chassis or individual chassis functions of a vehicle, it is necessary to use a signal constellation to define relevant observation periods of the vehicle or driving state and to quantitatively evaluate the signal constellations within these periods.
  • the results can be stored in a learning algorithm according to the situation and, viewed over longer periods or intervals, can be compared with one another in similar situations and with similar signal constellations in order to identify effects on Have component defects (e.g. shock absorber, bearing, drive, suspension) closed.
  • Detected trends or wear effects can be stored in an (already existing or additional) fault memory of the existing vehicle control system and can be examined in detail during the next inspection. This enables better early detection of impending defects. Serious, clearly recognizable defects are immediately shown to the driver by a (chassis) warning lamp.
  • the signals from the following sensors can be used as useful information:
  • Pressure sensors of the brake system and possibly existing additional sensors e.g. travel sensors,
  • a situation mode Once a situation mode has been clearly identified, it can be quantified based on typical situation characteristics. This quantification can be viewed as an indicator of the load on the vehicle. In these situations, for the evaluation of the "vehicle" system, critical characteristics can be defined for certain boundary conditions that indicate component defects.
  • the possibilities must be examined to assign specific boundary conditions and defect-typical features to one another by means of a certain signal combination and pattern recognition, in order to clearly identify component defects.
  • the form of the signals can vary depending on the vehicle configuration. For example, the tendency of a decreasing limit speed in the curve under the same boundary conditions (or lateral acceleration, steering angle, etc.) can be an indication of a decreasing functionality of the chassis components due to general wear.
  • Vibrating signals from yaw rate and lateral acceleration during stable cornering can be caused, for example, by defective shock absorbers or by incorrect tire air pressure on the outside of the curve. If this assumption is confirmed by similar resonance effects or characteristics in other driving situations, the suspicions accumulate and can be precisely specified in the presence of additional information (e.g. using tire pressure detection methods such as DDS, TPMS). If similar effects increase in frequency and intensity and lead to suspicions beyond a defined perception threshold, a registration is made by the signal of a warning lamp or by storing it in the inspection memory of the vehicle and thus provides assistance in the maintenance of the vehicle in the workshop. When the memory is deleted after the inspection, the suspicions or the learned value are reset. The statistical long-term observation for the formulation of the suspected moments can be realized by a corresponding learning algorithm within the program structure of the existing electronic brake system (EBS).
  • EBS electronic brake system
  • EBS electronic braking system
  • the vehicle deceleration and / or the spring travel are also taken into account, this information being determined by appropriate sensors, which are often required for the control anyway.
  • the signal characteristics are only considered and evaluated if the driving conditions described above meet certain qualitative and quantitative boundary conditions.
  • the perceived anomalies are accumulated in a statistical program algorithm in a feature-specific manner and viewed in their entirety in order to formulate a condition diagnosis for individual components or component groups. If the signals in the cumulative feature anomalies described exceed a certain perception threshold, a diagnostic message, e.g. by switching on a warning lamp, or an error memory entry is made.
  • FIGS. 1A, 1B, 1C The attached figure (Fig. 1A, Fig. IB, Fig. IC), which shows a flow chart or a flow chart, serves to illustrate essential features and steps of an embodiment of the method according to the invention.
  • the individual “stations” in the process sequence are designated and characterized as follows in FIGS. 1A, 1B, 1C:
  • the required or available information is compiled and evaluated in the form of certain signals.
  • the signals evaluated here as relevant and used to carry out the monitoring method according to the invention, such as wheel speed, steering angles etc. are shown in the diagram.
  • the "situation assessment” comprises the following individual steps or individual measures:

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Transportation (AREA)
  • Vehicle Body Suspensions (AREA)
  • Regulating Braking Force (AREA)

Abstract

L'invention vise à contrôler des fonctions et des composants du châssis d'un véhicule, et à détecter l'usure, des tendances à l'usure, des défauts de composants ou des fonctions qui se dégradent. A cet effet, des fonctions mises à disposition par des systèmes de régulation présents dans le véhicule, et/ou obtenues au moyen de capteurs supplémentaires, sont évaluées. Sur la base de ces informations, des déterminations dynamiques de conduite sont effectuées dans des états de véhicule ou de conduite reproductibles, et les fonctions de châssis et/ou l'état de composants du châssis sont reproduits directement ou indirectement pour l'évaluation statistique de caractéristiques spécifiques, et finalement exploités pour la détection de pannes ou de défauts.
EP03794919A 2002-08-27 2003-08-22 Procede de controle de fonctions et de composants de chassis Withdrawn EP1536994A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10239987 2002-08-27
DE10239987 2002-08-27
PCT/EP2003/009321 WO2004024521A1 (fr) 2002-08-27 2003-08-22 Procede de controle de fonctions et de composants de chassis

Publications (1)

Publication Number Publication Date
EP1536994A1 true EP1536994A1 (fr) 2005-06-08

Family

ID=31983887

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03794919A Withdrawn EP1536994A1 (fr) 2002-08-27 2003-08-22 Procede de controle de fonctions et de composants de chassis

Country Status (3)

Country Link
US (1) US20060116799A1 (fr)
EP (1) EP1536994A1 (fr)
WO (1) WO2004024521A1 (fr)

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CN111386203B (zh) * 2017-11-28 2023-05-23 沃尔沃卡车集团 用于确定车辆减震器装置的功能状态的方法
CN110084454A (zh) * 2018-01-26 2019-08-02 罗伯特·博世有限公司 在线评估部件使用情况的系统和方法
KR102261965B1 (ko) * 2019-10-17 2021-06-07 한국서부발전 주식회사 발전 설비 관리 장치

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Also Published As

Publication number Publication date
US20060116799A1 (en) 2006-06-01
WO2004024521A1 (fr) 2004-03-25

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