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Low Cost Magnetic Encoder

David Watson, J. Gao, M.P.Y. Desmulliez
Using Low Temperature Co-fired Ceramic (LTCC) technology, this project aims to design, manufacture and test a cutting edge yet robust magnetic transducer system. Many high-resolution transducers work on optical principals, requiring complex and expensive components and sophisticated manufacture and assembly techniques. Optical transducers can be susceptible to contamination, such as dirt or oil, making them suitable only for clean operating environments or deployed behind complex, bulky seals. By contrast, transducers that work on magnetic principles can operate over a wide temperature range but have no delicate components and are immune to most foreign contaminants, making them ideal for deployment in harsh environment, e.g., industrial printing, robotics and machining centres. Today’s magnetic transducers of this type are largely based on planar 2D sensing coils manufactured using PCB technology, with resulting limits in sensitivity and resolution. The project will begin to investigate the development of a 3D transducer using low-cost LTCC technology.

Using Low Temperature Co-fired Ceramic (LTCC) technology, this project aims to design, manufacture and test a cutting edge yet robust magnetic transducer system.

Many high-resolution transducers work on optical principals, requiring complex and expensive components and sophisticated manufacture and assembly techniques. Optical transducers can be susceptible to contamination, such as dirt or oil, making them suitable only for clean operating environments or deployed behind complex, bulky seals. By contrast, transducers that work on magnetic principles can operate over a wide temperature range but have no delicate components and are immune to most foreign contaminants, making them ideal for deployment in harsh environment, e.g., industrial printing, robotics and machining centres.

Today’s magnetic transducers of this type are largely based on planar 2D sensing coils manufactured using PCB technology, with resulting limits in sensitivity and resolution. The project will begin to investigate the development of a 3D transducer using low-cost LTCC technology.