Dynamic Force Measurement Vehicle (DFMV) and Its Application to Measuring and Monitoring Road Roughness

Abstract

A method for measuring the longitudinal profile of a highway or off-highway surface is given. As a paper presented at a “Vehicle, Tire Pavement Interface” meeting, this profile method is of particular interest to those involved in the study of vehicle response, as well as pavement roughness. The advantages and uses of a wave-number spectrum presentation of road roughness is discussed.

Development and optimization of an energy-regenerative suspension system under stochastic road excitation

“…The ground/tire interface motion into the vehicle is used as the measure of the terrain elevation [15], and the measurement is limited at the short wavelengths by the length of the tire footprint in contact with the terrain. Specifically, variations in the terrain elevation with a wavelength equal to or less than the length of the tire footprint cannot be measured, since the elevation seen by the tire at that wavelength is at the maximum attenuation.…”

Development of Standardization and Management System for the Severity of Unpaved Test Courses

“…Using this standard and control ranges, they control road severity. I.e., if PSD slope goes out of control ranges, they make road more flat or bumpier to converge PSD slope into control ranges [8]. …”

“…The principal dimensions of the trailer were designed through the theoretical modeling analysis to measure the 20∼0.3m/cycle frequency range [8,9]. An overall length, wheel base, track and tire radius of the trailer are 3.1m, 1.2m, 1.8m and 0.287m, respectively.…”

The Severity DB Construction for Unpaved Road Through Measuring 3D Road Profile

“…비를 개발하여 운용하고 있다 [3] . 그리고 미국의 민간 시험장인 NATC(Nevada Automotive Test Center)는 DFMV(Dynamic Force Measurement Vehicle) 장비를 개 발하여 노면굴곡 측정과 가혹도 분석을 수행하고 있 고 [4] , 일본 방위청 소속의 TRDI(Technical Research and Development Institute)는 1990년대 노면굴곡측정장비를 개발하여 측정과 분석을 수행하고 있다 [5] . 또한, 국방 과학연구소 창원시험장(Changwon Proving Ground)에서 .…”