| 摘要 |
PURPOSE: A profile output method for a road is provided to simplify measuring equipments by making a displacement profile of an axle spindle without road profile, and to make the road profile by outputting the displacement profile of the axle spindle regardless of a road condition. CONSTITUTION: Acceleration of an axle spindle is detected by sampling signals from triaxial acceleration gauges installed in axle spindles according to travel. Noise frequency is established as double frequency according to travel simulation of road profile, and noise is removed from the detected acceleration signal of the axle spindle according to the established noise frequency. The displacement profile of the axle spindle is output with integrating the acceleration signal of the axle spindle. High frequency noise is removed by reducing the noise frequency at booming during integrating, and the operated average is removed from integral value by outputting the average of the integral value at trending. The road profile is output according to the displacement profile of the axle spindle.
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