FIELD MEASUREMENTS OF NON-POINT SOURCES ON ROAD SURFACE USING A MODELED STORM-WATER SAMPLING (MOS) TECHNIQUE

Automated Winter Road Maintenance Using Road Surface Condition Measurements

Real-time measurement of tire-road friction coefficient is extremely valuable for winter road maintenance operations and can be used to optimize the kind and quantity of the deicing and anti-icing chemicals applied to the roadway. In this project, a wheel based tire-road friction coefficient measurement system is first developed for snowplows. Unlike a traditional Norse meter, this system is ba...

A Quasi-static Technique for Mos C-v and Surface State Measurements

A quasi-static technique is discussed for obtaining the ‘low frequency’ thermal equilibrium MOS capacitance-voltage characteristics. The method is based on a measurement of the MOS charging current in response to a linear voltage ramp, so that the charging current is directly proportional to the incremental MOS capacitance. With this technique, surface potential and the surface state density ca...

Effect of Non-Normality on Sampling Plan Using Yule’s Model

In this paper, the effect of non-normality on sampling plan using Yule’s model (second order auto regressive model {AR (2)}) represented by the Edgeworth series is studied for known $sigma$. The effect of using the normal theory sampling plan in a non-normal situation using Yule’s model is studied by obtaining the distorted errors of the first and second kind. As one will be interes...

Using Road Surface Measurements for Real Time Driving Simulation

Road surface irregularity is known to effect vehicle NVH responses. When modeling vehicle NVH, it is desirable to have high-resolution measurements of the road surface to use as road input. For typical NVH modal tire models, the road surface sampling rate will not be an issue because several points on the tire patch (center line) are used to determine the road surface irregularity. The single p...

Road surface texture inspection using high resolution transverse profile measurements