WO2020094407A1 - Procédé pour déterminer au moins un paramètre d'état d'un dispositif d'amortissement d'un véhicule automobile - Google Patents

Procédé pour déterminer au moins un paramètre d'état d'un dispositif d'amortissement d'un véhicule automobile Download PDF

Info

Publication number
WO2020094407A1
WO2020094407A1 PCT/EP2019/079002 EP2019079002W WO2020094407A1 WO 2020094407 A1 WO2020094407 A1 WO 2020094407A1 EP 2019079002 W EP2019079002 W EP 2019079002W WO 2020094407 A1 WO2020094407 A1 WO 2020094407A1
Authority
WO
WIPO (PCT)
Prior art keywords
motor vehicle
damping device
total mass
mass
damping
Prior art date
Application number
PCT/EP2019/079002
Other languages
German (de)
English (en)
Inventor
Peter Hofmann
Dennis Pape
Original Assignee
Zf Friedrichshafen Ag
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 Zf Friedrichshafen Ag filed Critical Zf Friedrichshafen Ag
Publication of WO2020094407A1 publication Critical patent/WO2020094407A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G13/00—Resilient suspensions characterised by arrangement, location or type of vibration dampers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G13/00—Resilient suspensions characterised by arrangement, location or type of vibration dampers
    • B60G13/02—Resilient suspensions characterised by arrangement, location or type of vibration dampers having dampers dissipating energy, e.g. frictionally
    • B60G13/06—Resilient suspensions characterised by arrangement, location or type of vibration dampers having dampers dissipating energy, e.g. frictionally of fluid type
    • B60G13/08—Resilient suspensions characterised by arrangement, location or type of vibration dampers having dampers dissipating energy, e.g. frictionally of fluid type hydraulic
    • 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
    • B60G17/017—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 their use when the vehicle is stationary, e.g. during loading, engine start-up or switch-off
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M17/00—Testing of vehicles
    • G01M17/007—Wheeled or endless-tracked vehicles
    • G01M17/04—Suspension or damping
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/20—Type of damper
    • B60G2202/24—Fluid damper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
    • B60G2400/10—Acceleration; Deceleration
    • B60G2400/102—Acceleration; Deceleration vertical
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
    • B60G2400/25—Stroke; Height; Displacement
    • B60G2400/252—Stroke; Height; Displacement vertical
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
    • B60G2400/60—Load
    • 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
    • B60G2600/04—Means for informing, instructing or displaying
    • B60G2600/042—Monitoring means
    • 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
    • B60G2600/084—Supervisory systems
    • 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
    • B60G2800/802—Diagnostics

Definitions

  • the invention relates to a method for determining at least one state parameter of a damping device of a motor vehicle, in particular a shock absorber, which damping device is designed to dampen movements, in particular vibrations, of a body of the motor vehicle.
  • Damping devices for motor vehicles are generally known from the prior art, as well as methods for checking the same. Damping devices of this type are used in motor vehicles to reduce movements of the bodywork, that is to say the body, relative to a chassis or chassis, in particular to dampen vibrations that occur during ferry operation. Since the function of such damping devices is safety-relevant, it is usually checked in workshops, for example shock absorbers are visually checked for their tightness or the leakage of hydraulic fluid.
  • the invention is based on the object of specifying an improved method for determining a state parameter of the damping device of a motor vehicle, in particular a method which allows the determination of a state parameter irrespective of visible damage.
  • the invention relates to a method for determining a state parameter of a damping device.
  • the method according to the invention comprises the steps:
  • the total mass of the motor vehicle is changed, that is to say that the mass or load, the structure or the structure of the motor vehicle is changed, so that the mass or load which acts on the damping device is also changed , is changed.
  • an additional mass can be used, by means of which the total mass is increased or by which the total mass is reduced.
  • the total mass on the body of the motor vehicle is expediently changed.
  • a movement, in particular a vibration, of the body or the damping device of the motor vehicle in response to the change in the total mass, there is a movement, in particular a vibration, of the body or the damping device of the motor vehicle.
  • a variable resulting from the change in the total mass is recorded, in particular a force curve and / or acceleration curve acting on the structure, in particular on the damping device, can be recorded.
  • the total mass of the motor vehicle is increased by loading an additional mass or a test mass into the motor vehicle, this leads to a movement of the body of the motor vehicle and thus also to a movement of the damping device damping the movements of the body, which is caused by the damping device that occurs Force curve and / or acceleration curve can be described or characterized. Additionally or alternatively, it is of course the same possible to record a path of the structure of the motor vehicle or the damping device as a variable.
  • a course of travel is understood to mean a change in the current position or orientation of the body and / or the damping device, which results in particular from the change in the total mass, for example a movement of the body or the damping device from the corresponding rest position resulting from the additional loading of the body with a test mass or unloading a test mass.
  • a state parameter of the damping device is determined based on the detected variable.
  • the state parameter which is determined in this case describes in particular the function or the functional capability, that is to say in general the state, in particular the wear that occurs or the presence of any damage to the damping device.
  • the state parameter can be used to express or state whether the damping device enables defined damping of movements, in particular vibrations, of the body of the motor vehicle, or whether there are deviations from a defined damping behavior that require repair or replacement of the damping - Make the installation necessary.
  • the total mass of the motor vehicle is changed, that is to say, in particular spontaneously, a force acting on the body or a force shock is brought about by changing the total mass.
  • the resultant response in particular the damping of the movement of the structure, which results from the function of the damping device, which counteracts the movement of the structure generated, is recorded according to the invention, the state parameter being determined from this detected variable.
  • the state parameter describes whether the damping device dampens the damping of the body movement caused by the change in the total mass of the motor vehicle, or whether deviations from a defined damping capacity occur. to step.
  • the force profile or acceleration profile that acts on the body of the motor vehicle can be detected, for example, by means of sensors, for example acceleration sensors, which are assigned to the body. It is also possible to arrange displacement sensors on the body and / or the damping device, which can detect a position or a change in the position or orientation of the body, in particular the resulting path.
  • the total mass of the motor vehicle it is possible to load the motor vehicle with an additional mass or to effect the change in the total mass by unloading an additional mass from the motor vehicle.
  • the additional mass is preferably loaded into the structure or removed from it, so that a change in the mass of the structure and / or a force acting on it is achieved.
  • the total mass can be increased or reduced.
  • the damping device can, for example, deflect appropriately when loading the motor vehicle in order to dampen the movements, in particular vibrations, of the body of the motor vehicle resulting from the change in the total mass.
  • the state parameter of the damping device can be determined based on the size that is recorded according to the invention.
  • an entry process and / or an exit process of at least one user of the motor vehicle can advantageously be used, in particular the mass of the at least one user can be used as an additional mass.
  • the mass of the at least one user can be used as an additional mass.
  • the total mass of the motor vehicle increases by the mass of the user, which can be understood as “additional mass” in the context of this embodiment.
  • the mass of the driver or another user of the motor vehicle that is to say his body weight, is thus used when getting into or out of the motor vehicle.
  • the total mass of the motor vehicle suddenly increases or decreases, as a result of which the at least one damping device deflects or rebounds in order to dampen the resulting movement of the body.
  • the body mass of the user of the motor vehicle can be used as a vibration exciter, which generates a vibration of the structure, which is damped by the at least one damping device.
  • the damping device fulfills the damping task, i.e. damping the generated movements of the body of the motor vehicle, changes or results in the state parameter of the damping device, which can be determined, for example, based on the force curve and / or the acceleration curve and / or the path curve.
  • a decay curve describing a decay of the movement generated by the change in the total mass, in particular vibration is determined and compared with a reference decay curve, preferably an aperiodic limit case of the damping device.
  • a reference decay curve preferably an aperiodic limit case of the damping device.
  • a decay curve can be determined which describes the decay of the generated vibration, wherein the decay curve determined can be compared with a reference decay curve.
  • the reference decay curve describes the decay behavior or the damping of the generated ones Vibration through the damping device if the damping device is in a functional state, in particular a reference state.
  • the currently determined decay curve is compared with such a reference decay curve in order to determine differences between the current decay curve, that is to say the current state of the damping device and the reference decay curve, that is to say a reference state or a desired state of the damping device.
  • the reference decay curve describes, for example, the aperiodic limit case of the damping device, which is usually aimed for in damping devices, in particular shock absorbers, for motor vehicles in order to dampen any vibration occurring in the structure of the motor vehicle in such a way that the body comes to rest after a single overshoot.
  • a deviation in particular a frequency deviation, occurs in the comparison between the decay curve, which can be determined as described above, and the reference decay curve, for example defined or defined, this can be output.
  • the at least one deviation between the decay curve and the reference decay curve can in particular be output in a fault memory of a control unit of the motor vehicle and / or to a user of the motor vehicle. It is therefore possible, if there is a deviation in the damping behavior of the damping device, to output this deviation accordingly in order to give the driver or the user or corresponding specialist personnel in a workshop an indication that the function of the damping device may be impaired. For example, it is possible to classify corresponding deviations according to their criticality and to decide accordingly whether it is sufficient to store corresponding information relating to the deviation in a fault memory of a control unit of the motor vehicle or the determined deviation to the user to display immediately.
  • the deviation indicates only a slight deviation from the reference decay curve, i.e. a deviation that is beginning to wear can be assigned to the damping device, it may be sufficient to store the information in a fault memory so that a check can be carried out the next time the workshop is visited. If, however, the ascertained deviation points to a defect or an impending failure of the damping device, it is possible to warn the user of the motor vehicle by outputting corresponding information, so that, for example, a workshop is immediately visited or the motor vehicle is parked or the motor vehicle cannot be put into operation.
  • the check whether deviations between the decay curve and the reference decay curve have occurred or can occur can be carried out using suitable, in particular mathematical, methods. For example, it is possible to check for deviations by means of a fast Fourier transform. As described above, an early detection of a deviation from a standard behavior of the damping device can advantageously be calculated by comparing the determined decay curve with a reference decay curve and determining frequency deviations therefrom, for example by means of a fast Fourier transformation. In this case, frequency deviations from the standard behavior of a new shock absorber can be determined, for example frequency deviations in the direction of a periodic fall of the damping device, which indicate wear or fatigue of the damping device. Such deviations can then be determined and evaluated, so that, as described above, corresponding information can be output.
  • the method is carried out when the motor vehicle is at rest.
  • the motor vehicle resting ie the motor vehicle is stationary. stood and does not move. This makes it possible to rule out further potentially disruptive influences on the determination of the state parameter of the damping device, since further accelerations that affect the structure of the motor vehicle from a ferry operation or in different driving situations can be excluded.
  • the motor vehicle is at rest, only the force profile or acceleration profile induced by the change in the total mass of the motor vehicle and the associated path profile of the body or the damping device act.
  • the method according to the invention can be carried out on a moving or moving motor vehicle.
  • a determination, measurement and / or evaluation of the decay behavior and / or the decay curve is carried out while the motor vehicle is driving.
  • a change in decay amplitudes of the natural frequency of the structure of the motor vehicle is preferably carried out while the motor vehicle is driving. If the method is carried out in the moving vehicle, a higher filter effort may be necessary, for example in order to exclude potentially disruptive influences on the determination of the state parameter of the damping device.
  • the method can also be carried out for at least two different damping devices of the motor vehicle, in particular for all of the damping devices of the motor vehicle.
  • This advantageously makes it possible to differentiate which of the damping devices makes which contribution and whether one of the damping devices of the motor vehicle is already showing signs of wear. If this is the case, it is possible to generate corresponding information which is output individually for the individual damping devices and which gives the user and / or a specialist in a workshop information about which of the damping devices is present in which condition and whether it is necessary, one of the Exchange or repair damping devices.
  • the invention relates to a control device for a motor vehicle, which control device has at least one detection device, in particular with a sensor, to detect a size of a damping device, which size relates to a force curve and / or acceleration curve resulting from a change in a total mass of the motor vehicle and / or acceleration curve and / or a path curve of a body of the motor vehicle or the damping device, wherein the control device is designed to determine at least one state parameter of the damping device based on the detected variable.
  • the invention relates to a motor vehicle with a control device according to the invention, as described above.
  • all of the advantages, details and features described in relation to the method according to the invention can be transferred to the control device according to the invention and the motor vehicle according to the invention. It is preferably possible to carry out the method according to the invention using the control device according to the invention or the motor vehicle according to the invention.
  • Fig. 2 is a flow diagram of a method according to the invention.
  • the motor vehicle 1 shows a motor vehicle 1 with a body 2, a chassis 3 and a plurality of damping devices 4, which are designed to dampen movements, in particular vibrations, of the body 2 of the motor vehicle 1.
  • the motor vehicle 1 has a control unit 5, to which a detection device 7, comprising sensors 6, for example acceleration sensors, is assigned, which is provided for detecting a size of the damping devices 4.
  • a force curve and / or an acceleration curve of the structure 2 or of the damping devices 4 can be detected by means of the detection device 7.
  • 6 displacement sensors instead of or in addition to the sensors, which are designed to provide a position and / or to register an orientation and / or changes in position, in particular vibrations, of the body 2 relative to the chassis 3.
  • the determination of the state parameter of the damping device 4 of the motor vehicle 1 is preferably carried out with the motor vehicle 1 at rest, in which the total mass of the motor vehicle is changed.
  • the variable resulting from the change in the total mass can be recorded, for example the force and / or acceleration acting on the body 2 and / or the path covered by a reference point of the body 2 or the damping device 4. Based on the detected variable, it is then possible to determine the state parameter of the damping device 4.
  • a decay curve can be determined which describes the behavior of the damping device 4, in particular how the damping device 4 dampens the movement, in particular vibration, generated by the change in the total mass.
  • the determined decay curve can then be compared with a reference decay curve that describes the behavior of a functioning or new damping device 4.
  • the reference decay curve preferably describes an aperiodic limit case of a damping device 4.
  • the total mass of the motor vehicle 1 it is possible to change the total mass of the motor vehicle 1 by loading the motor vehicle 1 with an additional mass or by unloading an additional mass from the motor vehicle 1.
  • the additional mass is loaded into the motor vehicle 1 so that it loads the body 2 or the additional mass is unloaded from the body 2 so that the load acting on the body 2 is reduced.
  • a boarding or alighting process of a user of the motor vehicle 1 can be used particularly preferably, the total mass of the motor vehicle 1 changing when the user gets into the motor vehicle 1 or gets out of the motor vehicle 1.
  • the total mass of motor vehicle 1 changes spontaneously or suddenly, so that a movement of body 2 relative to chassis 3 is generated, which movement, in particular vibration, from damping devices 4 is steamed.
  • the decay curve for the movement generated can be detected by the detection device 7, in particular the sensors 6, and can accordingly be sent to the control device 5, in which control device 5 an evaluation can be carried out.
  • deviations, preferably frequency deviations, between the decay curve and the reference decay curve can be determined and output depending on the type of deviation. For example, if there is a slight deviation, it can be stored in a fault memory of control unit 5 of motor vehicle 1 or in one critical deviation there is an immediate output to a user of motor vehicle 1.
  • Corresponding algorithms for determining or evaluating the decay curve or the comparison between the decay curve and the reference decay curve are stored in the control unit 5.
  • the check for deviations is preferably carried out by means of a fast Fourier transformation.
  • FIG. 2 represents a schematic flow diagram with exemplary method steps 8-12.
  • a first method step 8 the total mass of the motor vehicle 1 is changed, for example by loading or unloading an additional mass into the body 2 of the motor vehicle 1, in particular by means of a boarding process or a boarding process.
  • the total mass of the motor vehicle 1 is increased or reduced by the body mass of the user entering or exiting the motor vehicle 1.
  • the change in the total mass results in a movement of the body 2, in particular relative to the chassis 3, which movement can be recorded in method step 9.
  • the movement can be described by means of a force curve and / or acceleration curve and / or path curve, which can be detected by the detection device 7, for example by means of sensors 6.
  • a decay curve can be determined in a method step 10, which affects the damping behavior of the damping devices 4. writes.
  • the decay curve describes the vibration behavior of the damped movement of the structure 2.
  • the detected or determined decay curve is then compared in a method step 11 with a previously defined or defined reference decay curve which, for example, represents an aperiodic limit case of a damping device 4. From the comparison in method step 11, deviations between the decay curve and the reference decay curve are determined which, depending on their criticality for the state of the damping devices 4, can be output in step 12, namely either stored in a fault memory of the control unit 5 or can be output directly to a user of motor vehicle 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Vehicle Body Suspensions (AREA)
  • Vibration Prevention Devices (AREA)

Abstract

L'invention concerne un procédé pour déterminer au moins un paramètre d'état d'un dispositif d'amortissement (4) d'un véhicule automobile (1), notamment d'un amortisseur de chocs, ledit dispositif d'amortissement (4) étant configuré pour amortir les mouvements, notamment les vibrations, d'une carrosserie (2) du véhicule automobile (1). Le procédé comprend les étapes suivantes : modification de la masse totale du véhicule automobile (1) ; détection d'une grandeur résultant de la modification de la masse totale, notamment d'une courbe de force et/ou d'une courbe d'accélération et/ou d'une courbe de déplacement de la carrosserie (2) du véhicule automobile (1), notamment du dispositif d'amortissement (4), agissant sur la carrosserie (2), notamment le dispositif d'amortissement (4) ; détermination de l'au moins un paramètre d'état du dispositif d'amortissement (4) sur la base de la grandeur détectée.
PCT/EP2019/079002 2018-11-07 2019-10-24 Procédé pour déterminer au moins un paramètre d'état d'un dispositif d'amortissement d'un véhicule automobile WO2020094407A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102018218975.7 2018-11-07
DE102018218975 2018-11-07
DE102019206351.9 2019-05-03
DE102019206351.9A DE102019206351A1 (de) 2018-11-07 2019-05-03 Verfahren zur Ermittlung wenigstens eines Zustandsparameters einer Dämpfungseinrichtung eines Kraftfahrzeugs

Publications (1)

Publication Number Publication Date
WO2020094407A1 true WO2020094407A1 (fr) 2020-05-14

Family

ID=70469697

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2019/079002 WO2020094407A1 (fr) 2018-11-07 2019-10-24 Procédé pour déterminer au moins un paramètre d'état d'un dispositif d'amortissement d'un véhicule automobile

Country Status (2)

Country Link
DE (1) DE102019206351A1 (fr)
WO (1) WO2020094407A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116409101A (zh) * 2021-12-31 2023-07-11 比亚迪股份有限公司 车辆减振控制系统、方法及车辆

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19935972A1 (de) * 1998-08-19 2000-03-02 Deutsche Bahn Ag Anordnung zum Erfassen der Dämpferkraft eines Schwingungsdämpfers und Verfahren zum Überprüfen von Schwingungsdämpfern
DE10258265A1 (de) * 2002-01-25 2003-08-21 Continental Teves Ag & Co Ohg Verfahren zur Überwachung von Feder-Dämpfersystemen
DE102012222888A1 (de) * 2012-12-12 2014-06-12 Robert Bosch Gmbh Verfahren und Vorrichtung zur Überwachung eines Feder-Dämpfer-Elements eines Fahrzeugs
DE102014220887A1 (de) * 2013-10-17 2015-04-23 Ford Global Technologies, Llc System und Verfahren zur Überwachung von Fahrzeugstossdämpfern
US20170199103A1 (en) * 2014-05-28 2017-07-13 Showa Corporation Method and system for inspecting damping force variable mechanism, and method for inspecting pressure damping device
WO2019105532A1 (fr) * 2017-11-28 2019-06-06 Volvo Truck Corporation Procédé de détermination de l'état opérationnel d'un système d'amortissement pour véhicule

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19935972A1 (de) * 1998-08-19 2000-03-02 Deutsche Bahn Ag Anordnung zum Erfassen der Dämpferkraft eines Schwingungsdämpfers und Verfahren zum Überprüfen von Schwingungsdämpfern
DE10258265A1 (de) * 2002-01-25 2003-08-21 Continental Teves Ag & Co Ohg Verfahren zur Überwachung von Feder-Dämpfersystemen
DE102012222888A1 (de) * 2012-12-12 2014-06-12 Robert Bosch Gmbh Verfahren und Vorrichtung zur Überwachung eines Feder-Dämpfer-Elements eines Fahrzeugs
DE102014220887A1 (de) * 2013-10-17 2015-04-23 Ford Global Technologies, Llc System und Verfahren zur Überwachung von Fahrzeugstossdämpfern
US20170199103A1 (en) * 2014-05-28 2017-07-13 Showa Corporation Method and system for inspecting damping force variable mechanism, and method for inspecting pressure damping device
WO2019105532A1 (fr) * 2017-11-28 2019-06-06 Volvo Truck Corporation Procédé de détermination de l'état opérationnel d'un système d'amortissement pour véhicule

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116409101A (zh) * 2021-12-31 2023-07-11 比亚迪股份有限公司 车辆减振控制系统、方法及车辆

Also Published As

Publication number Publication date
DE102019206351A1 (de) 2020-05-07

Similar Documents

Publication Publication Date Title
DE102011082806A1 (de) Verfahren und Vorrichtung zur Diagnose von Fehlern in Bauteilen von Fahrwerksystemen von Kraftfahrzeugen
EP1891344A2 (fr) Joint à rotule doté d'un dispositif détecteur et procédé de mesure d'usure
DE102008053002A1 (de) Verfahren und System zur Beeinflussung der Bewegung eines in seinen Bewegungsabläufen steuerbaren oder regelbaren Fahrzeugaufbaus eines Kraftfahrzeuges und Fahrzeug
DE102012218426B4 (de) Verfahren, Steuergerät und System zum Ermitteln eines, einen Zustand zumindest einer Komponente eines Kraftfahrzeugs kennzeichnenden Parameters
DE102017200855A1 (de) Verfahren und System zur Diagnose von Komponenten eines Fahrzeugs
EP2101156B1 (fr) Procédé et dispositif destinés à la surveillance de systèmes de réglage de châssis
WO2019110434A1 (fr) Procédé de détermination d'un dommage, qui survient lors d'un accident entre un véhicule et un partenaire de choc, sur le véhicule
DE102007037298B4 (de) Verfahren und Anordnung zum Überprüfen eines Sensorsignals
DE102015008725A1 (de) Verfahren zum Ermitteln eines Zustands eines Fahrzeugs
DE102012000603A1 (de) Verfahren zum Delektieren einer möglichen Beschädigung eines Kraftwagenbauteils
WO2020094407A1 (fr) Procédé pour déterminer au moins un paramètre d'état d'un dispositif d'amortissement d'un véhicule automobile
DE102012219762A1 (de) Verfahren und Vorrichtung zum Bewerten des Zustands mindestens eines Stoßdämpfers eines Fahrzeugs
EP1625051A1 (fr) Procede pour surveiller le bon fonctionnement d'un appareil de commande et dispositif de diagnostic
DE102017218751A1 (de) Verfahren und Bewertungssystem zum Bewerten einer weiteren Nutzbarkeit eines Hochvoltspeichers eines Kraftfahrzeugs nach einem kritischen Ereignis
EP2539183B1 (fr) Méthode de surveillance de systèmes de véhicules lors de travaux de maintenance
DE102011100313A1 (de) Verfahren zur Diagnose eines Funktionszustands einer Komponente eines aktiven Fahrwerks eines Kraftwagens
DE102004017660A1 (de) Verfahren und Vorrichtung zur Beanspruchungsanalyse in elektrischen und/oder elektromechanischen Systemen
WO2005000636A1 (fr) Procede pour surveiller le bon fonctionnement d'un appareil de commande et dispositif de diagnostic
DE102006031587A1 (de) Verfahren und Vorrichtung zum Überwachen von Stoßdämpfern
DE102019202428A1 (de) Verfahren zur Diagnose von Schwingungsdämpfern
DE102017212800A1 (de) Verfahren zum Testen eines Lenkgetriebes
WO2022207134A1 (fr) Procédé et système de véhicule permettant de déterminer l'état des composants d'un châssis
DE102017130549A1 (de) Verfahren zur Durchführung einer Eigendiagnose bei einem autonomen Fahrzeug
DE102020106460A1 (de) Verfahren und Vorrichtung zum Bestimmen der Funktionsfähigkeit einer Füllstandssensorik sowie ein die Vorrichtung umfassendes System
DE102012224111A1 (de) Verfahren zum Überwachen eines Fahrzeugstoßdämpfers

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19794519

Country of ref document: EP

Kind code of ref document: A1

122 Ep: pct application non-entry in european phase

Ref document number: 19794519

Country of ref document: EP

Kind code of ref document: A1