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High-Speed Profilograph.
| 题名： | High-Speed Profilograph. |
| 作者： | E. F., Nordlin; L. G., Kubel; W., Chow |
| 关键词： | High Speeds; Instrumentation; Pavement Smoothness; Pavement Surfaces; Pavements; Profile Measurements; Profilographs; Profilometers; Road Profiles; Testing Equipment |
| 摘要： | The results of research conducted by the California Division of Highways on the development of a high-speed profilograph is reported. A description of the equipment used to measure road profile at high speeds between 50 and 65 mph is described. The goal of this project was to obtain a profile record of the road similar to the current records obtained by the hand push and motorized low-speed profilograph. A rotary potentiometer was used to measure the relative movements between an automobile's wheel and its chassis. An accelerometer was used on the automobile chassis in the proximity of the wheel frame to measure the absolute displacement of the automobile frame. The difference between these two movements was taken to be a representation of the road profile. A good correlation between current profile measurements and the high-speed measurements were made on relatively |
| 报告类型： | 科技报告 |
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