| 摘要 |
A testing machine reproduces road excited vibrations for the purposes of testing vehicle wheel support specimens, for example McPherson strut assemblies used in front wheel drive vehicles, the system permits force inputs of horizontal, steering, vertical, and wheel hop loads, as well as, optionally, simulating braking loads. The loading fixture is compact, and substantially eliminates cross coupling of horizontal loading due to steering motion of the device, even though the steering motions provide for large steering excursions. The loading is tire coupled to simulate actual conditions, including wheel hop that occurs during road travel, and further provides for inherent cross coupling compensation to permit easy instrumentation and very close simulation of road induced vehicle vibrations during the testing process. The entire steering linkage can be tested, including tie rods, tie rod ends, and the wheel suspension mechanism.
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