[특허]Torsional actuation NVH test method

[미국특허] Torsional actuation NVH test method 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G01M-019/00
출원번호	US-0932715 (2004-09-02)
발명자 / 주소	Kurecka, Donald Joseph Ranek, Mark Norman Schankin, David Paul Sun, Zhaohui
출원인 / 주소	American Axle & Manufacturing, Inc.
대리인 / 주소	Harness, Dickey &
인용정보	피인용 횟수 : 4 인용 특허 : 33

초록 ▼

A method for evaluating energy transmission from an axle through a vehicle suspension system. The methodology employs a torsional actuator to apply input energy to the vehicle in a manner that mimics the energy that is generated by the axle during the operation of the vehicle so that both the driving load and the vibration induced by gearset motion variation are simulated. Since the energy input can be quantified and monitored, the same amount of torque can be applied during each test to permit the technician to fully comprehend differences in the designs of several axles on the transmission of noise and vibration.

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1. A method comprising:locking the output of an axle to prevent rotation; applying a torque to an input shaft of the axle; and monitoring energy that is transmitted to a vehicle suspension through at least one transfer path. 2. The method of claim 1, wherein a magnitude of the torque is not constant during a time period in which energy transmission to the vehicle suspension through the transfer path is being monitored.3. The method of claim 2, wherein the torque includes a first portion which varies over the time period, and a second portion which is constant over the time period.4. The method of claim 3, wherein the first portion varies in a predetermined manner.5. The method of claim 4, wherein the predetermined manner is oscillation.6. The method of claim 1, wherein a hydraulic actuator is employed to apply the torque to the input shaft.7. The method of claim 6, wherein the hydraulic actuator is a linear actuator.8. The method of claim 1, wherein locking the output of the axle includes locking the drive wheels of a vehicle against rotation.9. The A method comprising:coupling a torsional actuator to an input of a power-transmitting device, the power-transmitting device having a gearset; controlling the torsional actuator such that the torsional actuator applies a torque input to the input, the torque input having a static portion and a dynamic portion, the static portion simulating power train torque and the dynamic portion simulating torsional vibration induced by gearset motion variation; and monitoring the energy that is transmitted to a vehicle suspension through at least one transfer path. 10. The method of claim 9, wherein the power-transmitting device is an axle assembly.11. The method of claim 9, wherein the static portion has an approximately constant magnitude.12. The method of claim 9, wherein the dynamic portion has a magnitude that varies over time.13. The method of claim 12, wherein the magnitude of the dynamic portion oscillates.14. The method of claim 1, wherein the controlling step is performed by a servo-control system.15. The method of claim 14, wherein the servo-control system is driven by a hydraulic pump.16. The method of claim 9, wherein the torsional actuator includes a linear actuator that is mounted to apply a force to the input in a manner that tends to rotate the input about an axis.17. A method for evaluating energy transmission in a motor vehicle through a transfer path between an axle assembly and a chassis, the axle assembly having an input, an output and a differential gearset interconnecting the input to the output, comprising:locking the output of the axle assembly; applying a torque input to the input of the axle assembly; and monitoring the energy that is transmitted through the transfer path. 18. The method of claim 17 further comprising the step of coupling an actuator to the input of the axle assembly for applying the torque input thereto.19. The method of claim 17 wherein the torque input excites the differential gearset to mimic operation of the vehicle.20. A method comprising:providing a power-transmitting device having an input member and an output member; locking the output member against rotation; applying a torsional input to the input member having first and second portions; and monitoring the energy transmitted from the power-transmitting device through an energy transfer path. 21. The method of claim 20 wherein the method is employed in a motor vehicle to monitor and evaluate the energy transmitted from an axle assembly to a chassis through a suspension component.

이 특허에 인용된 특허 (33) 인용/피인용 타임라인 분석

Walkowc Janusz (Cordova TN), Active torsional vibration damper.
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Yoshida Akio (Toyota JA), Apparatus for absorbing torque fluctuations produced by an internal combustion engine.
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Maxwell David W. (Delphos OH) Reynolds James T. (Toledo OH) Smith Gary L. (Southgate OH) Valencic Leon W. (Holland OH), Apparatus for balancing a combined assembly of a drive shaft and axle input shaft.
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Richard M. Krzesicki ; Stanley L. Seely, Controllable torque transfer differential mechanism using magnetorheological fluid.
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Buzzi ; Carlo, Device for measuring the damping effect of motor vehicle suspensions.
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Hamada Masaaki,JPX ; Aoi Takahiro,JPX ; Kohgo Tetsuya,JPX ; Mishima Masaaki,JPX, Double-mass type dynamic damper having two damper systems.
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Moradi Mohammad A. ; Rossman Michael D. ; LaBell Larry, Driveline system balancing method and apparatus.
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Moradi Mohammad A. ; Rossman Michael D. ; LaBell Larry, Driveline system balancing method and apparatus.
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Moradi Mohammad Ali ; Higley Robert J. ; Rossman Michael Dennis, Driveline system balancing method and apparatus.
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Amborn Peter (Neunkirchen DEX) Greulich Klaus (Hollig DEX), Driveshaft including damping sleeve for bending and torsional frequency improvement.
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Szymanski John George ; Stanley ; Jr. Robert Henry ; Roland Fredrick Richard, Dual-mode, viscous crankshaft vibration damper.
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Gallmeyer Robin John (White Lake MI) Gonzalez Camilo Gomez (Vigo ESX) Nylander Mick Aldo (Holly MI), Dynamic damper.
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James C. Juranitch ; Robert D. Olschefski, Isolation and loading arrangement for differential gear system under test.
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Mokeddem Mohamed, Magneto-rheological torsional vibration damper.
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Kopp Gary E. (Shelby Twp. MI) Goodes Paul R. (Troy MI), Method and apparatus for detecting drive line system imbalance.
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Tebbe Gerhard (Geldersheim DEX), Motor vehicle drive line torsional vibration damper.
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Porter, Fred C., On-demand all-wheel drive system.
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Damitz Joerg P. (Runkel DEX), Process for testing driving axles and device for performing the process.
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Hanke Wolfgang (Heidenheim DEX), Resilient damping coupling for installation in a drive line of a motor vehicle.
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Wolf Franz J. (Bad Soden-Salmnster DEX) Thesenvitz Manfred (Schlchtern DEX) Mohr Martin (Brachttal-Udenhain DEX) Schneider Joachim (Bad Soden-Salmnster DEX), Shaft absorber.
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McNall Fredlee M. (Allegany NY), Shaft dampening apparatus.
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Ochs Winfried (Alsbach-Hhnlein DEX) Rhrig Bernhard (Heppenheim DEX), Speed-adaptive torsional vibration damper.
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Charaudeau, Jean-Jacques; Laurent, Daniel; Linda, Jean-Louis; Varenne, Pierre, Suspension device having a trim corrector.
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Kurecka, Donald Joseph; Ranek, Mark Norman; Schankin, David Paul; Sun, Zhaohui, Torsional actuation NVH test method.
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Zobrist Gerald S. (Cincinnati OH) Dunlap Terry A. (Cincinnati OH) Russell Richard H. (Milford OH), Torsional exciter for a rotating structure.
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Kopp Gary Edward ; Polubinski James G., Transportable vehicle tester.
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Spaetgens Theodore W. (6963 Fremlin Ave. Vancouver ; B.C. CA V6P 3W3), Tuned torsional vibration damper.
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Sanada Masakatsu,JPX ; Tanahashi Toshio,JPX, Vehicle driveability evaluation system.
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Skogler Brian I. (Holland MI) Nyhof Eldon J. (Zeeland MI) Katsma William L. (Caledonia MI), Vehicular mirror and light assembly.
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Runge Walter,DEX ; Bohm Gerald,DEX ; Hamaekers Arno,DEX ; Olbrich Andreas,DEX, Vibration canceler which is mountable on shaft with enlargements.
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Damian Karl (Taunusstrasse 52 6054 Rodgau DEX 3), Vibration damper at a driveshaft.
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Andra Rainer,DEX ; Schneider Wilfried,DEX, Vibration damping, torsionally elastic shaft coupling, especially for a motor vehicle power train.
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Strader Dennis L. (Fishers IN), Vibration isolator coupling.
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이 특허를 인용한 특허 (4) 인용/피인용 타임라인 분석

Alexander, Matthew J.; Noda, Yoshiaki; Bowers, Lee N., Axle tubes including protrusion and vehicle including same.
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Steyer, Glen; Sun, Zhaohui; Schankin, David P., Dual-tuned vibration damper.
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Zeitlin, Alexander Semion; Smith, Todd Allen; Lazreq, Zouhair, Method and apparatus for evaluating NVH characteristics of mechanical systems.
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Sanchez, Victor S.; Borowiak, James P., Method for predicting imbalance of a propeller shaft assembly.
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[미국특허] Torsional actuation NVH test method 원문보기

초록 ▼

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연구과제 타임라인

이 특허에 인용된 특허 (33) 인용/피인용 타임라인 분석

이 특허를 인용한 특허 (4) 인용/피인용 타임라인 분석

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[미국특허] Torsional actuation NVH test method 원문보기

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이 특허에 인용된 특허 (33) 인용/피인용 타임라인 분석

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