WO1994024535A1 - Messrad - Google Patents
Messrad Download PDFInfo
- Publication number
- WO1994024535A1 WO1994024535A1 PCT/EP1994/000886 EP9400886W WO9424535A1 WO 1994024535 A1 WO1994024535 A1 WO 1994024535A1 EP 9400886 W EP9400886 W EP 9400886W WO 9424535 A1 WO9424535 A1 WO 9424535A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- wheel
- rim
- measuring wheel
- measuring
- coil
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/16—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring several components of force
- G01L5/161—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring several components of force using variations in ohmic resistance
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
- B60G2204/10—Mounting of suspension elements
- B60G2204/11—Mounting of sensors thereon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
- B60G2204/10—Mounting of suspension elements
- B60G2204/11—Mounting of sensors thereon
- B60G2204/115—Wheel hub bearing sensors
Definitions
- the invention relates to a measuring wheel for detecting forces and moments between the rim and axle of a vehicle wheel with the further features according to the preamble of claim 1.
- Fatigue tests and driving dynamics tests are an essential component in the development of vehicles, especially in connection with safety-related functional groups, which include the vehicle wheels and the chassis that holds them.
- the relevant tests are carried out on load test benches and in the vehicle.
- the prerequisite for this is that the forces occurring in driving operation are determined in the driving test.
- Measuring wheels are used for such a multi-component force measurement on the rotating wheel.
- the force flow is passed through suitable measuring elements.
- spring bodies with strain gauges (DMS) or quartz sensors are usually used.
- the measured values determined are converted online or offline from the rotating coordinate system of the wheel to the coordinate system of the vehicle. For this it is also necessary to record the angular position of the wheel. Exemplary embodiments of such measuring wheels and details of the experimental procedure are described in more detail, for example, in the report "Multi-component wheel measuring hub, possible uses and results" in ATZ Automobiltechnische Zeitschrift 94 (1992) pages 44 to 53.
- the multi-component wheel measuring hub shown there for example on page 45, consists of a modified rim, a wheel flange, a sensor and an electronic component.
- the sensor is used to record the dynamic forces and moments.
- the strain gauge applications required for their determination are carried out on a specially designed aluminum part.
- the electronic component comprises a DC voltage amplifier for each measured variable, a slip ring rotary transducer and a resolver for determining the wheel position (angle of rotation of the wheel about the Y axis).
- Such a measuring wheel has the major disadvantage that it does not match a static wheel that was later installed in the vehicle, neither in static nor in dynamic terms.
- the experimental design has increased the wheel weight considerably, as do the parts that protrude relatively far outwards (slip ring rotary transducers, resolvers) have an additional torque effect when driving and pose a hazard in public road traffic, which makes measurements in customer operation impossible or at least very difficult.
- slip ring rotary transducers, resolvers slip ring rotary transducers, resolvers
- FIG. 2 shows a schematic sectional illustration of the measuring wheel according to the invention according to arrows II in FIG. 4,
- FIG 3 shows a side view of the associated stator and attached to the wheel axle (suspension strut)
- FIG. 4 shows a view of the measuring wheel according to arrow IV in FIG. 2.
- the forces F ⁇ , F ⁇ , F ′′ shown in FIG. 1 occur in the direction of action indicated by arrows and the moments M acting around the X, Y, Z axis on each wheel 1 ⁇ , M ⁇ and M participate.
- the measuring wheel 2 shown in FIGS. 2 and 4 is used to determine these three external forces and moments related to the wheel contact point.
- a tire 3, indicated by dash-dotted lines, is received in a known manner from a rim bed 4 of a rim 5, for example made of an aluminum alloy.
- a rim end 8, which adjoins the rim base 4 and is connected to a wheel flange 7 via measuring transducers (strain gauges 6), as well as the pot flange 7, which is cup-shaped in the central inner part, consists of a fiber composite material (CFRP carbon fiber reinforced plastic) ).
- CFRP carbon fiber reinforced plastic
- connection between the rim base 4 and the rim end face 8 takes place in such a way that the fiber composite material is manufactured in the previously sandblasted rim base 4.
- the connection thus acts like a large-area adhesive connection (adhesive forces).
- the rim base 4 is processed before sandblasting (ribs 9) so that a positive connection is created, which secures the connected parts against axial and radial displacements.
- the curing of the rim end face 8 is controlled in such a way that the rim base 4 is under tension.
- the fiber composite material CFRP used has a high modulus of elasticity (approx. 100,000 N / mm 2 )
- the rim 5 has an overall rigidity which corresponds to that of a standard rim.
- the wheel flange 7 is connected to the wheel axle (not shown here) by means of screws 13 seated on titanium bases 10.
- openings 22 incorporated into the rim end face 8 in each of these areas can cause additional heat dissipation to the outside.
- strain gauge measuring sockets 6 are arranged as measuring sensors within a cavity 16 formed by the contour (central cup 11, edge-side bevel 15) of the wheel flange 7 and distributed uniformly over the circumference and connected to the wheel flange 7 or connected to the rim end face 8 by means of screw connections 17.
- a larger number of load cells 6 could be used, but at least three.
- the structure of the transducers allows both static and dynamic measurement signals to be detected precisely. This means that both the individual integrated load cells and the entire measuring wheel 2 can be statically calibrated very precisely.
- Each of the four strain gauge load cells is constructed in a known manner and delivers three signals, corresponding to the forces F ", F ⁇ and F" occurring in it.
- a first signal processing can be done in the load cell 6 itself by electronics boards built into it, which serve, among other things, to pre-amplify the signals and crosstalk compensation.
- the signals coming from the load cells 6 into an electronics unit 18 inserted into the central pot 11 of the rim end 8 via cables 19 are thus already preamplified, so that interference by interference fields from the automotive electronics is suppressed. Further interference signals could result from the fact that temperature stresses due to braking and the resulting thermal expansions of the wheel flange 7 and rim end face 8 result in additional stresses on the load cells 6 which distort the measured values.
- the choice of materials for the wheel flange 7 and the rim end face 8 has an extremely positive effect, since the fiber composite material CFRP has only very small thermal expansions (much smaller than steel or aluminum).
- the twelve force signals (four load cells 6, each with three force signals F, F, F ”) pass through a socket holder 20 which extends into the central pot 11 of the wheel flange 7 and is fastened to the wheel flange 7 by means of screws 21 (see FIG. 4) into the (screw connections 23) electronics unit 18 held by it, which is placed on the sockets provided in the socket holder 20.
- the total forces and the total moments are formed in a known manner from the individual forces. These signals are combined with a signal from a temperature sensor, which in a z. B. should be arranged by braking thermally loaded area of the measuring wheel 2, and digitized a voltage monitoring signal. This data is converted into a serial PCM (Pulse Code Modulation) data stream and frequency modulated via cable 24 to a coil and magnetic ring 25, which is made of a glass fiber reinforced plastic and glued into the inside of the rim base 4.
- PCM Pulse Code Modulation
- the coil and magnetic ring 25 serves as a receptacle for integrated data transmission and energy reception coils 26, 27 and also has on its inside 29 facing a stator 28 attached to the vehicle, a ferrite magnet 30 arranged uniformly distributed over the circumference and synchronization magnets 31 existing magnetic track. It makes sense to back up the coil and magnetic ring 25 on its side facing the rim bed 4 with a few layers of magnetically conductive film in order to shield the magnetic fields of the coils 26, 27 from the rim bed 4.
- the coil and magnetic ring 25 is assigned the already mentioned, on the chassis side (for example on the shock absorber) stator 28 which carries the components corresponding to the data transmission coil 26, the energy receiving coil 27 and the magnetic track (ferrite magnets 30, synchronization magnets 31) .
- the stator housing itself is also made of a glass fiber reinforced plastic and consists of a base part 33 that is curved, that is curved in a circular line, and a cover 34 that is attached to the rim bed contour Hall sensors (four angular sensors 37 arranged one after the other at equal intervals and an adjacent synchronization sensor 41 for the zero marking and detection of the direction of travel of the wheel rotation movement) and a transmitter coil 38 with coil core 39 for the energy transmission in the electronics unit 18.
- These units are connected to the vehicle-side measurement value acquisition and processing system via a connected common data / energy cable 40.
- an open conductor loop in the coil and magnet ring 25 could be used instead of the wheel-side data transmission coil 26.
- the receiving coil 35 would then have to be replaced by a miniature coil and a preamplifier.
- the energy transmission takes place via inductively coupled resonance circuits, the working frequency being approx. 50 KHz.
- the distance between stator 28 and coil and magnetic ring 25 may vary between 0 and 5 mm.
- Transmitting and receiving coils 38, 27 should have taps for adaptation to generator or consumer.
- the data transfer also takes place via inductively coupled resonance circuits, the magnetic fields of energy and data transmission being spatially differently oriented. This can be achieved by a symmetrical winding structure in the case of transmitting and receiving coils 38, 27 for energy transmission and the opposite winding sense in the case of transmitting and receiving coils 26, 35 for data transmission. As a result, the coupling of the energy transmission into the data transmission is low.
- the four angle sensors 37 are mounted on a circular arc at a distance of 2.5 ° in the stator base part 33. They detect the field of 180 ferrite magnets 30 glued in at a distance of 2 ° on the magnetic track. This results in a resolution of the wheel rotation angle of 0.5 °, since an angle sensor occurs after every 0.5 ° rotation 37 comes with a ferrite magnet 30 to cover.
- the synchronization sensor 41 recognizes three synchronization magnets 31 arranged next to the ferrite magnets 30.
- the sensor signals are evaluated in an angle measuring electronics which is part of the vehicle-side measurement value acquisition and processing system. There, a counter is incrementally incremented or decremented, depending on the direction of travel.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6522663A JPH08508821A (ja) | 1993-04-10 | 1994-03-22 | 測定ホイール |
DE59403968T DE59403968D1 (de) | 1993-04-10 | 1994-03-22 | Messrad |
KR1019950704185A KR100286191B1 (ko) | 1993-04-10 | 1994-03-22 | 힘 및 모멘트 감지용 측정 휠 |
EP94912493A EP0694161B1 (de) | 1993-04-10 | 1994-03-22 | Messrad |
US08/545,617 US5827956A (en) | 1993-04-10 | 1994-03-22 | Force measuring wheel for vehicles |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4311903A DE4311903A1 (de) | 1993-04-10 | 1993-04-10 | Meßrad |
DEP4311903.4 | 1993-04-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1994024535A1 true WO1994024535A1 (de) | 1994-10-27 |
Family
ID=6485277
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1994/000886 WO1994024535A1 (de) | 1993-04-10 | 1994-03-22 | Messrad |
Country Status (7)
Country | Link |
---|---|
US (1) | US5827956A (de) |
EP (1) | EP0694161B1 (de) |
JP (1) | JPH08508821A (de) |
KR (1) | KR100286191B1 (de) |
DE (2) | DE4311903A1 (de) |
ES (1) | ES2107206T3 (de) |
WO (1) | WO1994024535A1 (de) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5540108A (en) * | 1994-02-25 | 1996-07-30 | Advanced Mechanical Technology, Inc. | Multi-axis wheel transducer with angular position detector |
FR2721109B1 (fr) * | 1994-02-25 | 1997-01-03 | Advanced Mechanical Tech | Capteur de force de roue. |
DE19537036C2 (de) * | 1995-10-05 | 1997-07-31 | Daimler Benz Aerospace Airbus | Trimmradanordnung zur Höhentrimmung eines Passagierflugzeuges |
DE19627385A1 (de) * | 1996-07-06 | 1998-01-08 | Bayerische Motoren Werke Ag | Radmeßnabe |
DE19804981A1 (de) * | 1998-02-07 | 1999-08-19 | Daimler Chrysler Ag | Mehrkomponenten-Meßrad |
DE19824290A1 (de) * | 1998-05-31 | 1999-12-02 | Klaus Palme | Übertragungssystem zum Aufladen von Traktionsbatterien an Bord eines Elektrofahrzeugs im Stand und/oder während der Fahrt |
DE50013198D1 (de) * | 1999-09-15 | 2006-08-31 | Continental Teves Ag & Co Ohg | Vorrichtung mit mindestens zwei sensoren, insbesondere reifen-seitenwandtorsions(swt)-sensoren |
DE10024035B4 (de) * | 2000-05-16 | 2010-06-17 | Sew-Eurodrive Gmbh & Co. Kg | Komponente |
DE10141252C1 (de) * | 2001-08-23 | 2003-04-17 | Knorr Bremse Systeme | Einrichtung zur Ermittlung von auf die Radaufhängung eines Rades eines Fahrzeuges einwirkenden Kräften und/oder Momenten |
ATE550636T1 (de) * | 2004-05-12 | 2012-04-15 | Pirelli | Verfahren zur bestimmung einer kraft an der nabe eines rads eines fahrzeugs während der fahrt und für die ausführung des verfahrens geeignetes rad |
DE102008054161A1 (de) * | 2008-10-31 | 2010-05-06 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Reifendrucküberwachungseinrichtung mit Stromversorgung durch magnetische Induktion |
FR2939008B1 (fr) * | 2008-12-01 | 2011-06-24 | Pellenc Sa | Appareil de taille motorise auto-decoincant, en particulier taille-haie |
FR2979430B1 (fr) * | 2011-08-30 | 2013-08-23 | France Etat | Dispositif d'essai d'une roue en dynamique |
JP5692147B2 (ja) * | 2012-04-18 | 2015-04-01 | 株式会社安川電機 | 回転電機 |
CN102840901B (zh) * | 2012-09-25 | 2014-12-17 | 何志明 | 轨道车辆微机测重装置 |
PL235968B1 (pl) * | 2018-03-20 | 2020-11-16 | Lubelska Polt | Czujnik |
IT201900015003A1 (it) * | 2019-08-23 | 2021-02-23 | Cnh Ind Italia Spa | Sistema di misura di una coppia applicata ad un albero di trasmissione e veicolo comprendente il sistema di misura. |
DE102019134423A1 (de) * | 2019-12-16 | 2021-06-17 | Bayerische Motoren Werke Aktiengesellschaft | Verfahren zur Lenkungsauslegung für Kraftfahrzeuge und Vorrichtung dazu |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0352788A2 (de) * | 1988-07-28 | 1990-01-31 | Fraunhofer-Gesellschaft Zur Förderung Der Angewandten Forschung E.V. | Messrad |
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DE352788C (de) * | 1922-05-04 | Hermann Anders | Zugvorrichtung fuer Drehschalter | |
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CH472669A (it) * | 1967-12-06 | 1969-05-15 | Gomma Antivibranti Applic | Dispositivo dinamometrico per il rilievo di carichi statici e dinamici |
US3797305A (en) * | 1972-01-31 | 1974-03-19 | Indikon Co | Self calibrating strain gage torquemeter |
DE2214223C2 (de) * | 1972-03-23 | 1980-10-16 | Ruediger Dr.-Ing. 7503 Neureut Weber | Meßnabe |
JPS52133270A (en) * | 1976-04-30 | 1977-11-08 | Yamato Scale Co Ltd | Apparatus for measuring force |
US4046005A (en) * | 1976-06-14 | 1977-09-06 | Measurement Systems, Incorporated | Three axis joystick control |
DE2708484C2 (de) * | 1977-02-26 | 1983-07-28 | Daimler-Benz Ag, 7000 Stuttgart | Drehmoment-Meßanordnung |
DE2856453A1 (de) * | 1978-12-28 | 1980-07-10 | Volkswagenwerk Ag | Messnabe |
DE2917967C2 (de) * | 1979-05-04 | 1982-12-09 | Daimler-Benz Ag, 7000 Stuttgart | Einrichtung zur Messung von Kraftkomponenten, insbesondere an Kraftfahrzeugen |
DE2917966C2 (de) * | 1979-05-04 | 1983-10-13 | Daimler-Benz Ag, 7000 Stuttgart | Einrichtung zur Messung von Kraftkomponenten in Gelenken |
JPS57118132A (en) * | 1981-01-13 | 1982-07-22 | Nissho Denki Kk | Detector for multiple components of force |
JPS57169643A (en) * | 1981-04-13 | 1982-10-19 | Yamato Scale Co Ltd | Load cell for multiple components of force |
US4493220A (en) * | 1982-11-23 | 1985-01-15 | Advanced Mechanical Technology, Inc. | Force measuring platform and load cell therefor using strain gages to measure shear forces |
DE3336542A1 (de) * | 1983-10-07 | 1985-04-25 | Moskovskij gidromeliorativnyj institut, Moskau/Moskva | Einrichtung zur messung von kraeften und momenten an einem rotierenden laeufer |
DE3345638A1 (de) * | 1983-12-16 | 1985-06-20 | Späth GmbH & Co KG, 7760 Radolfzell | Felge fuer kraftfahrzeuge und dergleichen |
FR2580550A1 (fr) * | 1985-04-19 | 1986-10-24 | Bonafous Jean | Roue a structure composite |
GB8610310D0 (en) * | 1986-04-28 | 1986-06-04 | Vickers Plc | Dynamometers |
DE3636339A1 (de) * | 1986-10-24 | 1988-05-05 | Bayerische Motoren Werke Ag | Sensoranordnung an kraftfahrzeugen |
DE8700180U1 (de) * | 1987-01-03 | 1987-06-25 | Dietrich Grünau GmbH & Co KG, 7778 Markdorf | Meßwertübertrager |
BG45090A1 (de) * | 1987-03-10 | 1989-04-14 | Georgi D Kostov | |
DE8712263U1 (de) * | 1987-09-10 | 1987-10-29 | Bergische Achsenfabrik Fr. Kotz & Söhne, 5276 Wiehl | Vorrichtung und Achskörper zum Messen, Aufzeichnen und Anzeigen wichtiger Betriebsdaten einer Anhängerachse |
US4927347A (en) * | 1988-10-11 | 1990-05-22 | Motor Wheel Corporation | Compression mold for fiber-reinforced composite wheels |
DE3934626C2 (de) * | 1989-10-17 | 1997-04-24 | Hofmann Gmbh & Co Kg Maschinen | Vorrichtung zum Überprüfen von Kraftfahrzeugreifen |
DE3937403A1 (de) * | 1989-11-10 | 1991-05-16 | Porsche Ag | Verfahren und einrichtung zur ueberwachung der funktionstuechtigkeit eines fahrwerks fuer ein kraftfahrzeug |
DE3937966C2 (de) * | 1989-11-15 | 1994-02-03 | Bert Prof Dr Ing Breuer | Verfahren und Vorrichtung zur Bestimmung der Kraftschlußverhältnisse zwischen Fahrzeugreifen und Fahrbahn |
DE4007797C1 (en) * | 1990-03-12 | 1991-05-02 | Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De | Circular coil fastener for attachment to motor vehicle - connects to pressure sensor for contactless transmission of tyre pressure signals |
JP3024784B2 (ja) * | 1990-09-26 | 2000-03-21 | 株式会社ブリヂストン | タイヤ内部監視装置 |
DE4033052A1 (de) * | 1990-10-18 | 1992-04-23 | Hottinger Messtechnik Baldwin | Kontaktlose verbindungseinrichtung zur uebertragung von messwertsignalen und energie |
DE4100472C1 (de) * | 1991-01-09 | 1992-07-23 | Texas Instruments Deutschland Gmbh, 8050 Freising, De |
-
1993
- 1993-04-10 DE DE4311903A patent/DE4311903A1/de not_active Withdrawn
-
1994
- 1994-03-22 ES ES94912493T patent/ES2107206T3/es not_active Expired - Lifetime
- 1994-03-22 DE DE59403968T patent/DE59403968D1/de not_active Expired - Lifetime
- 1994-03-22 WO PCT/EP1994/000886 patent/WO1994024535A1/de active IP Right Grant
- 1994-03-22 KR KR1019950704185A patent/KR100286191B1/ko not_active IP Right Cessation
- 1994-03-22 EP EP94912493A patent/EP0694161B1/de not_active Expired - Lifetime
- 1994-03-22 US US08/545,617 patent/US5827956A/en not_active Expired - Lifetime
- 1994-03-22 JP JP6522663A patent/JPH08508821A/ja active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0352788A2 (de) * | 1988-07-28 | 1990-01-31 | Fraunhofer-Gesellschaft Zur Förderung Der Angewandten Forschung E.V. | Messrad |
Non-Patent Citations (1)
Title |
---|
R.LOH ET AL.: "MEHRKOMPONENTEN-RADMESSNABE Einsatzmöglichkeiten und Ergebnisse", ATZ AUTOMOBILTECHNISCHE ZEEITSCHRIFT, vol. 94, no. 1, 1 January 1992 (1992-01-01), STUTTGART , DE, pages 44 - 53, XP000241631 * |
Also Published As
Publication number | Publication date |
---|---|
KR960701355A (ko) | 1996-02-24 |
JPH08508821A (ja) | 1996-09-17 |
EP0694161B1 (de) | 1997-09-03 |
KR100286191B1 (ko) | 2001-04-16 |
DE4311903A1 (de) | 1994-10-13 |
US5827956A (en) | 1998-10-27 |
DE59403968D1 (de) | 1997-10-09 |
EP0694161A1 (de) | 1996-01-31 |
ES2107206T3 (es) | 1997-11-16 |
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