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Rigid-body mode integration test method for automobile power assembly and suspension

A rigid body mode and powertrain technology, which is applied in vehicle suspension/shock absorbing mechanism testing, vibration testing, engine testing, etc., can solve the problem of insufficient excitation force energy and difficult excitation of rigid body mode of powertrain and suspension systems , test vehicle weight and other issues

Active Publication Date: 2012-06-27
CHONGQING CHANGAN AUTOMOBILE CO LTD +1
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

The powertrain and suspension rigid body modes are tested in the vehicle state. Due to the heavy weight of the test vehicle, both test methods have insufficient excitation force energy. It is difficult to excite the rigid body modes of the powertrain and suspension system. test with accurate results

Method used

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  • Rigid-body mode integration test method for automobile power assembly and suspension
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  • Rigid-body mode integration test method for automobile power assembly and suspension

Examples

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Embodiment Construction

[0018] Below in conjunction with specific embodiment, further illustrate the present invention. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content of the present invention, those skilled in the art may make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

[0019] The test system used in this example is the Test.Lab multi-channel vibration test system of Belgium LMS.

[0020] Step 1: Select response test points on the engine, suspension knuckle and body, and measure the coordinates of the test points to establish a test model. Arrange at least 8 test points on the engine to outline the shape of the engine, at least 2 test points on the front and rear wheel steering knuckles, and ar...

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Abstract

The invention discloses a rigid-body mode integration test method for an automobile power assembly and a suspension system. By adopting a constant-velocity amplitude sinusoidal scanning excitation signal as an excitation source of a four-channel vibration table, the method not only can test the translation rigid body modes along X, Y and Z directions and the rotation rigid body modes around the X, Y and Z directions of the power assembly relatively well, but also can test the homonymous jump mode and incongruous jump mode of the suspension system relatively well.

Description

technical field [0001] The invention relates to the field of automobile vibration testing, in particular to an automobile power assembly and suspension rigid body mode integration testing method. Background technique [0002] The rigid body modes of the powertrain and suspension system have an important impact on the comfort of the car. The reasonable distribution of the rigid body modes of the powertrain and suspension system can effectively filter out the low-frequency vibration from the road, and the car will get better good comfort. At present, there are two integrated test methods for the rigid body mode of the vehicle powertrain and suspension system under the condition of testing the vehicle: the hammer excitation method and the vibration exciter excitation method. The powertrain and suspension rigid body modes are tested in the vehicle state. Due to the heavy weight of the test vehicle, both test methods have insufficient excitation force energy. It is difficult to ...

Claims

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Application Information

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IPC IPC(8): G01M7/02G01M15/00G01M17/04
Inventor 曹石军张军李传兵贾文宇勾中彪
Owner CHONGQING CHANGAN AUTOMOBILE CO LTD
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