Control of a mobile platform didactic purposes

Robots are electromechanical machines having ability to perform tasks or actions on some given electronic programming. Line follower robots are mobile robots having ability to follow a line very accurately having an onboard hardwired control circuit. while Omni directional mobile robots have been popularly employed in several applications.This situation brings the idea of omnidirectional robot at manufacturing. Such a robot can respond more quickly and it would be capable of more sophisticated behaviors such as to transport materials and placed on processing machine and outgoing warehouses. This thesis has tried to focus in the control of four wheel omnidirectional mobile robot to be applied to the Factory Lite competition. Four motors are used for governing wheel’s motion. Practical applications of a line follower and odometry will be implemented in this work.Les robots sont des machines électromécaniques capables d'exécuter des tâches ou des actions selon une programmation électronique donnée. Les robots suiveurs de ligne sont des robots mobiles capables de suivre une ligne avec une grande précision grâce à un circuit de contrôle câblé embarqué. Les robots mobiles omnidirectionnels sont couramment utilisés dans plusieurs applications, ce qui amène l'idée d'un robot omnidirectionnel dans la fabrication. Un tel robot peut Un tel robot peut répondre plus rapidement et il serait capable de comportements plus sophistiqués tels que transporter des matériaux et les placer sur des machines de traitement et des entrepôts de sortie. Cette thèse a essayé de se concentrer sur le contrôle d'un robot mobile omnidirectionnel à quatre roues pour être appliqué à la compétition Factory Lite. Quatre moteurs sont utilisés pour gouverner le mouvement des roues. Des applications pratiques d'un suiveur de ligne et d'odométrie seront mises en oeuvre dans ce travail

Fully automated urban traffic system

The replacement of the driver with an automatic system which could perform the functions of guiding and routing a vehicle with a human's capability of responding to changing traffic demands was discussed. The problem was divided into four technological areas; guidance, routing, computing, and communications. It was determined that the latter three areas being developed independent of any need for fully automated urban traffic. A guidance system that would meet system requirements was not being developed but was technically feasible

Where do we go from here? An assessment of navigation performance using a compass versus a GPS unit

The Global Positioning System (GPS) looks set to replace the traditional map and compass for navigation tasks in military and civil domains. However, we may ask whether GPS has a real performance advantage over traditional methods. We present an exploratory study using a waypoint plotting task to compare the standard magnetic compass against a military GPS unit, for both expert and non-expert navigators. Whilst performance times were generally longer in setting up the GPS unit, once navigation was underway the GPS was more efficient than the compass. For mediumto long-term missions, this means that GPS could offer significant performance benefits, although the compass remains superior for shorter missions. Notwithstanding the performance times, significantly more errors, and more serious errors, occurred when using the compass. Overall, then, the GPS offers some clear advantages, especially for non-expert users. Nonetheless, concerns over the development of cognitive maps remain when using GPS technologies