Test system for dynamically analyzing a vehicle under simulated road conditions
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
G01M-017/04
G01M-017/007
출원번호
US-0555735
(2006-11-02)
등록번호
US-7461556
(2008-12-09)
발명자
/ 주소
Hamilton,James
출원인 / 주소
Chip Ganassi Racing Teams, Inc.
대리인 / 주소
Bose McKinney & Evans LLP
인용정보
피인용 횟수 :
7인용 특허 :
17
초록
An apparatus for testing a vehicle. The apparatus includes an actuator and a stand assembly supported by the actuator. The stand assembly includes a coupling device configured to attach to a vehicle, and the actuator is configured to move the vehicle in response to a computer-generated signal.
대표청구항▼
What is claimed is: 1. An apparatus for testing a vehicle, comprising: an actuator configured to move the vehicle in response to a comutper-generated signal; a biasing member configured to extend and compress along a vertical axis in response to the movement of the vehicle by the actuator; and a st
What is claimed is: 1. An apparatus for testing a vehicle, comprising: an actuator configured to move the vehicle in response to a comutper-generated signal; a biasing member configured to extend and compress along a vertical axis in response to the movement of the vehicle by the actuator; and a stand assembly supported by the actuator, the stand assembly including a coupling device configured to attach to the vehicle. 2. The apparatus of claim 1, wherein the stand assembly further comprises a pivot arm configured to move from a first position to a second position relative to a pivot axis of the stand assembly. 3. The apparatus of claim 2, wherein the pivot arm is substantially parallel to a transverse axis of the stand assembly when located at the first position. 4. The apparatus of claim 2, wherein the biasing member is releasably coupled to the pivot arm and configured to support the pivot arm when located at the first position. 5. The apparatus of claim 2, wherein the coupling device is suspended from the pivot arm and configured to allow movement of the vehicle. 6. The apparatus of claim 5, wherein the stand assembly further comprises a spherical joint coupled to the pivot arm and the coupling device, the spherical joint to provide for a wheel geometry as the vehicle is moved. 7. The apparatus of claim 6, wherein the wheel geometry includes at least one of a camber change, a wheelbase change, a toe change and a track change. 8. The apparatus of claim 2, wherein the coupling device includes an attachment device, the attachment device being attachable to a hub of the vehicle. 9. The apparatus of claim 8, wherein the attachment device comprises a bolt. 10. The apparatus of claim 1, wherein the coupling device includes at least one mounting plate fixably attached thereto and configured to form a clevis for a spherical joint between a bearing shaft and the coupling device. 11. The apparatus of claim 10, further comprising a bolt aligned horizontally and orthogonally to the at least one mounting plate, the bolt being configured to secure the bearing shaft to the coupling device in a manner such that the stand assembly is flexible in all degrees of motion except the vertical. 12. The apparatus of claim 1, wherein the biasing member comprises a spring. 13. The apparatus of claim 1, wherein the actuator comprises a ram actuator. 14. An apparatus for testing a vehicle, comprising: a base; a pivot arm pivotably coupled to the base and configured to move from a first position to a second position relative to a pivot axis of the base, the pivot arm being substantially parallel to a transverse axis of the base when in the first position; a biasing member releasably coupled to the pivot arm, the biasing member being configured to support the pivot arm when in the first position and to extend and compress along a vertical axis in response to movement of the vehicle; and a coupling device configured to attach to a vehicle, the coupling device being suspended from the pivot arm and configured to allow the movement of the vehicle. 15. The apparatus of claim 14, wherein the base further comprises a spherical joint coupled to the pivot arm and the coupling device, the spherical joint to provide for a wheel geometry as the vehicle is moved. 16. The apparatus of claim 15, wherein the wheel geometry includes at least one of a camber change, a wheelbase change, a toe change and a track change. 17. The apparatus of claim 14, wherein the coupling device includes an attachment device, the attachment device being attachable to a hub of the vehicle. 18. The apparatus of claim 17, wherein the attachment device comprises a bolt. 19. The apparatus of claim 14, wherein the coupling device includes at least one mounting plate fixably attached thereto and configured to form a clevis for a spherical joint between a bearing shaft and the coupling device. 20. The apparatus of claim 14, wherein the biasing member comprises a spring. 21. An apparatus for testing a vehicle, comprising: an actuator configured to move the vehicle in response to a computer-generated signal; a stand assembly supported by the actuator, the stand assembly comprising a coupling device configured to attach to the vehicle; a biasing member configured to extend and compress along a vertical axis in response to the movement of the vehicle by the actuator; and a controller coupled to the actuator, the controller including an output and being configured to generate the computer-generated signal to the actuator to cause the vehicle to move in response thereto. 22. The apparatus of claim 21, wherein the stand assembly further comprises a pivot arm configured to move from a first position to a second position relative to a pivot axis of the stand assembly. 23. The apparatus of claim 22, wherein the pivot arm is substantially parallel to a transverse axis of the stand assembly when located at the first position. 24. The apparatus of claim 22, wherein the biasing member is releasably coupled to the pivot arm and configured to support the pivot arm when located at the first position. 25. The apparatus of claim 24, wherein the coupling device is suspended from the pivot arm and configured to allow movement of the vehicle. 26. The apparatus of claim 25, wherein the stand assembly further comprises a spherical joint coupled to the pivot arm and the coupling device, the spherical joint to provide for a wheel geometry as the vehicle is moved. 27. The apparatus of claim 26, wherein the wheel geometry includes at least one of a camber change, a wheelbase change, a toe change and a track change. 28. The apparatus of claim 21, wherein the coupling device includes an attachment device, the attachment device being attachable to a hub of the vehicle. 29. The apparatus of claim 28, wherein the attachment device comprises a bolt. 30. The apparatus of claim 21, wherein the coupling device includes at least one mounting plate fixably attached thereto and configured to form a clevis for a spherical joint between a bearing shaft and the coupling device. 31. The apparatus of claim 30, farther comprising a bolt aligned horizontally and orthogonally to the at least one mounting plate, the bolt being configured to secure the bearing shaft to the coupling device in a manner such that the stand assembly is flexible in all degrees of motion except the vertical. 32. The apparatus of claim 21, wherein the actuator is configured to move the vehicle through a displacement pattern in response to the signal from the controller. 33. The apparatus of claim 21, wherein the signal comprises a sine wave signal that produces a constant peak vertical velocity to the actuator. 34. The apparatus of claim 33, wherein the constant peak vertical velocity is about 2 inches per second as the sine wave varies from about 1 Hertz to about 20 Hertz. 35. A method for testing a vehicle, the method comprising the steps of: providing a vehicle testing apparatus comprising an actuator configured to move the vehicle, a biasing member configured to extend and compress along a vertical axis ins response to the movement of the vehicle and a stand assembly supported by the actuator and including a coupling device configured to attached to the vehicle; generating a signal to the actuator to cause the vehicle to move through a displacement pattern; and evaluating the movement of the vehicle by analyzing the displacement of the actuator. 36. The method of claim 35, wherein the step of generating a signal to the actuator comprises causing a computer to produce a sine wave signal to move the actuator, the sine wave including an amplitude being configured to produce a constant peak vertical velocity. 37. The method of claim 36, wherein the step of moving the vehicle comprises causing the signal to force the actuator to move the stand assembly up and down in a manner that replicates the displacement pattern. 38. The method of claim 36, wherein the constant peak vertical velocity is about 2 inches per second as the sine wave varies from about 1 Hertz to about 20 Hertz. 39. The method of claim 37, wherein the step of analyzing the displacement of the actuator comprises measuring vertical load variations transmitted by the stand assembly to the vehicle in response to the actuator's movement. 40. The method of claim 39, wherein the step of measuring vertical load variations comprises measuring load cells in the actuator. 41. An apparatus for testing a vehicle, comprising: an actuator configured to move the vehicle in response to a computer-generated signal; a stand assembly supported by the actuator, the stand assembly including a coupling device configured to attach to the vehicle and a pivot arm configured to move from a first position to a second position relative to a pivot axis of the stand assembly; and a spring releasably coupled to the pivot arm and configured to support the pivot arm when located at the first position. 42. An apparatus for testing a vehicle, comprising: a base; a pivot arm pivotably coupled to the base and configured to move from a first position to a second position relative to a pivot axis of the base, the pivot arm being substantially parallel to a transverse axis of the base when in the first position; a spring releasably coupled to the pivot arm and configured to support the pivot arm when in the first position; and a coupling device configured to attach to a vehicle, the coupling device being suspended from the pivot arm and configured to allow movement of the vehicle. 43. An apparatus for testing a vehicle, comprising: an actuator; a stand assembly supported by the actuator, the stand assembly comprising a coupling device configured to attach to the vehicle; and a controller coupled to the actuator, the controller including an output and being configured to generate a sine wave signal that produces a constant peak vertical velocity to the actuator to cause the vehicle to move in response thereto. 44. The apparatus of claim 43, wherein the constant peak vertical velocity is about 2 inches per second as the sine wave varies from about 1 Hertz to about 20 Hertz. 45. A method for testing a vehicle, the method comprising the steps of: providing an actuator, the actuator configured to support a stand assembly attached to the vehicle; causing a computer to generate a sine wave signal to the actuator to cause the vehicle to move through a displacement pattern, the sine wave signal including an amplitude configured to produce a constant peak vertical velocity; and evaluating the movement of the vehicle by analyzing the displacement of the actuator. 46. The method of claim 45, wherein the step of generating a signal to the actuator comprises causing a computer to produce a sine wave signal to move the actuator, the sine wave including an amplitude being configured to produce a constant peak vertical velocity. 47. The method of claim 46, wherein the step of moving the vehicle comprises causing the signal to force the actuator to move the stand assembly up and down in a manner that replicates the displacement pattern. 48. The method of claim 46, wherein the constant peak vertical velocity is about 2 inches per second as the sine wave varies from about 1 Hertz to about 20 Hertz. 49. The method of claim 47, wherein the step of analyzing the displacement of the actuator comprises measuring vertical load variations transmitted by the stand assembly to the vehicle in response to the actuator's movement. 50. The method of claim 49, wherein the step of measuring vertical load variations comprises measuring load cells in the actuator.
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