In this paper, the history and current status of navigation technology and navigation systems for land vehicle are introduced. The available positioning techniques for vehicles, such as GPS, differential GPS (DGPS), GPS/GLONSS, Inertial Navigation System (INS), GPS/INS, GPS/Geocompass and Odometer, are described in details. The current available navigation systems for land vehicles are analyzed. Based on the available positioning techniques and current navigation systems for vehicles, the special requirements and effects on commercialization of EVs are proposed and the future trend of the navigation systems for EVs is predicated. Three models of navigation system for electric vehicles are proposed according to the different costs of the navigation systems. The perfect navigation system for EVs is DGPS/GLONSS/INS navigation system. It employs the positioning techniques of all-available satellite signals and inertial instruments, such as, the GPS receiver, GLONSS receiver, DGPS radio beacon receiver, silicon micromechanical gyroscope, and silicon accelerators. The system has the best performance and highest accuracy for navigation in the urban cities. But it is also the most expensive. The best navigation system for EVs is GPS/GLONSS/Silicon Gyroseope/Odometer navigation system for the most of EVs will travel in the urban cities. The silicon gyroscope sensors take place of the traditional geomagnetic compasses. So its reliability is higher. Its ratio of the performance to the cost is the highest. The cheapest one is GPS/Geocompass/Odometer navigation system. They all apply the map-matching technique and Kalman Filter to reduce the location errors. According to fast development of the integrated technology, microcomputers and silicon micro-mechanical INS sensors, the future model of Navigation System for EVs should base on GPS/GLONSS/Silicon Gyroscope/Odometer(or silicon accelerator) system. The navigation systems for EVs must be combined with the EMS so the information of residual energy of the battery system and residual driving range can be used to tell the driver whether he can arrive his destination or where he can find the nearest charging station to finish bis travelling. This will make customs of EV free of driving range issues to improve the EV acceptability.
An overview of advanced navigation systems for EVs
Ein Überblick über fortgeschrittene Navigationssystem für Elektrofahrzeuge
1999
11 Seiten, 6 Bilder, 10 Quellen
Aufsatz (Konferenz)
Englisch
An overview of advanced navigation systems for EVs
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