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Technical Paper

Giant Magneto Resistors - Sensor Technology and Automotive Applications

2005-04-11
2005-01-0462
The paper will give an introduction to the principle of the giant magneto resistive - GMR - effect and the silicon system integration of GMR sensors. The two main applications of a GMR as a magnetic field strength sensor and as an angular field direction sensor will be discussed under consideration of automotive requirements. The typical applications of a magnetic field strength GMR sensor in incremental position and speed sensing and those of GMR angular field sensors in position sensing will be summarized. Finally advantages of GMR in those applications will be discussed and conclusions on the use of GMR in automotive sensing will be drawn.
Technical Paper

Cost Efficient Partitioning for New Generation of Automatic Transmission Gearbox Controllers

2006-04-03
2006-01-0403
This paper shall present advancements in electronic transmission control circuits addressing new challenges in the gearbox striving for improved vehicle efficiency and comfort of driving. Efficient chipset design, requires finding the optimal partitioning, that is the mapping of functionality to hardware or software and analog or digital circuit technology. The efficiency will be judged by minimal cost whilst achieving improved functionality and required scalability for a platform approach. Specific examples demonstrated are smart sensor architecture and new mapping of control strategies, realized with a novice integrated current control IC concept. Comparisons on system level are used to evaluate different function mappings as well as component partitioning. Details of the most optimized mapping and partitioning will be elaborated and first results of implementation in silicon components will be shown.
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