Improving the Quality of Inertial Profiler Measurements at Low Speed, During Braking, and Through Stops

Karamihas, Steven M.; University of Michigan. Transportation Research Institute

Advanced Search

Select up to three search categories and corresponding keywords using the fields to the right. Refer to the Help section for more detailed instructions.

Search our Collections & Repository

Advanced Search
Custom Query

All these words:

For very narrow results

This exact word or phrase:

When looking for a specific result

Any of these words:

Best used for discovery & interchangable words

None of these words:

Recommended to be used in conjunction with other fields

Language:

Dates

Publication Date Range:

to

Document Data

Title:

Document Type:

Library

Collection:

Series:

People

Author:

Clear All

Query Builder

Query box

Clear All

For additional assistance using the Custom Query please check out our Help Page

ROSA P serves as an archival repository of USDOT-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by USDOT or funded partners. As a repository, ROSA P retains documents in their original published format to ensure public access to scientific information.

i

Improving the Quality of Inertial Profiler Measurements at Low Speed, During Braking, and Through Stops

2020-04-01
By Karamihas, Steven M.

Select the Download button to view the document

This document is over 5mb in size and cannot be previewed

English

Details You May Also Like

Details:

Creators:

Karamihas, Steven M.
Corporate Creators:

University of Michigan. Transportation Research Institute
Contributors:

Chatfield, Megan
Corporate Contributors:

United States. Department of Transportation. Federal Highway Administration. Western Federal Lands Highway Division
Subject/TRT Terms:

[+]

Inertial Forces Longitudinal Control Profilometers Roughness
Publication/ Report Number:

FHWA-RC-21-0001
Resource Type:

Tech Report
Geographical Coverage:

United States
Contracting Officer:

Chatfield, Megan
Corporate Publisher:

United States. Federal Highway Administration. Western Federal Lands Highway Division
Abstract:

Inertial profilers can produce valid measurements of longitudinal road profile when they are operated under favorable conditions. However, their performance deteriorates when the host vehicle travels at low speed, decelerates, or comes to a stop. These limitations have hindered the application of inertial profilers for measurement of roughness on low-speed roadways and within urban road networks. This research developed and tested short-term and long-term solutions for addressing errors in profile measurement caused by adverse operational conditions. The proposed short-term solution combines custom numerical procedures with standard filtering techniques to reduce errors in profile measured during stops using only the nominal set of sensors found on a production inertial profiler. The long-term solution augments the nominal inertial profiler design with additional sensors to eliminate errors caused by accelerometer misalignment and bias. The augmented system includes body-fixed measurement of profiler acceleration and rotation rate in three dimensions. The system also includes GPS measurement of profiler host vehicle height, vertical velocity, pitch inclination, and roll inclination. A multi-rate extended Kalman filter with smoothing combines the inertial sensors with the GPS outputs to eliminate drift and alignment errors.
Format:

PDF
Funding:

DTFH70-12-E-00032
Collection(s):

Federal Highway Administration
Main Document Checksum:

[+]

urn:sha-512:bc78d454e6d79f16cb6487fb3467fbf49f546ebf40f74e7314262bf5b844837b67caae3df7f0b781e2db6d973a8584f3682ee9d44469c011ad31c684d135939d
Download URL:

https://rosap.ntl.bts.gov/view/dot/74313/dot_74313_DS1.pdf
File Type:

[PDF-7.54 MB]