Control of Heavy Duty Vehicle

Real System Deployment
Enabling Technologies

1. ANALYSES OF THE RESPONSE OF PAVEMENTS CONTAINING PLUGS FOR VEHICLE GUIDANCE

Task Order 4219

Carl Monismith, University of California, Berkeley
clm@newton.berkeley.edu

John Harvey, University of California, Berkeley
jharvey@newton.berkeley.edu

This project examines the influence of magnets on pavement performance, specifically cracking, by considering the effects of traffic loading and temperature changes through a series of pavement simulations of representative pavement structures with magnets currently in use. Three-dimensional finite-element idealizations of the selected pavement structures and sensor sizes and locations will be developed for the pavement simulations. A range of temperature conditions will be examined, and the effects of rate of loading (truck speed) will also be evaluated. The simulations will be validated by a series of loading tests conducted with the Heavy Vehicle Simulator at the Richmond Field Station.

2. REFINEMENT OF MAGNETIC REFERENCE/SENSING SYSTEM IN PREPARATION FOR COMMERCIALIZATION

Task Order 4226

Ching-Yao Chan, California PATH
cychan@uclink4.berkeley.edu, http://www.path.berkeley.edu/PATH/General/Staff/cchan.html

This project is a continuation of MOU396. It continues to explore several critical issues with regard to the magnetic marker positioning system, so that it can be commercialised and used in real system deployments. The issues to be researched include: (1) The measurement of background magnetic fields at various roadway sites. (2) The comparison of magnetic markers and magnetic tape provided by 3M. (3) The testing of alternative magnetic sensors. (4) The optimisation of a complete magnetic reference/sensing system. (5) The development of a standard coding scheme for magnetic marker installation. (6) The development of roadmap and opportunities for early implementation of PATH lateral control technologies.

3. DEVELOP PRECISION DOCKING FUNCTION FOR BUS OPERATION

MOU 397

Han-Shue Tan, California PATH
hstan@path4.its.berkeley.edu, http://www.path.berkeley.edu/PATH/General/Staff/htan.html

PATH has developed a precision docking system for automobiles and demonstrated robust performance for docking (with an accuracy of 1.5 cm distance from the curb). This project proposes to implement a precision docking system on a bus. The objective is to demonstrate that precision docking system can provide superior docking accuracy and reduce the stress of the bus operator. The specific tasks will involve the design and development of an actuator system, the installation of magnetometers, computer and data acquisition system, the development of data processing and control software. Also a human machine interface will be developed for drivers to engage (and disengage) and to monitor the docking operation.