TDK Corp presents an angle sensor developed through GMR elements and focused on motor control of hybrid and electric vehicles. The angle sensor is embedded with features like a resolution as high as 0.35 and a smaller size compared with existing angle sensors that use a coil and a magnet. The angle sensor comes with a great combination of metallic disk, placed on motor shaft. Designed in circular arch consisting of four GMR elements inside each loaded with a permanent magnet on the rear side.

The metallic disk being oval in shape makes the distance between disk and sensor change as the shaft rotates, favouring changes in the magnetic field. The GMR elements detect those changes and determine the angles. When it comes to hybrid and electric vehicles, it is necessary to have an angle sensor that can detect the angle of a shutdown motor with the resolution of 0.5 to 0.8, according to TDK.

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