Recommended placement of magnets and magnetic sensors
Example of on-axis placement
An example that achieves an angle error of 0.1 degree or less while allowing ± 1.8 mm of rotation axis deviation by placing the sensor on the rotation axis at a position with a gap of 2.0 millimeter from the end of the magnet.
Can be achieved by all TMR angle sensor products
Example of off-axis placement
Example of achieving a mechanical Angle Error of approximately 0.15° or less using LookUp Table compensation with 1 pair poles ring magnet.
Distance magnet to sensor : 4.5mm
Distance magnet center to sensor : 0mm
Distance magnet to package : 2.0mm
Ring magnet specifications
Outer diameter : 8mm
Inside diameter : 3mm
Thickness : 4mm
Magnet material : NdFeB(Bonding)
Direction of magnetization : Radius
Magnetic poles : 2 poles
Magnetic field at 4.5mm Gap : Up to 30mT
Outer diameter : 8mm
Inside diameter : 3mm
Thickness : 4mm
Magnet material : NdFeB(Bonding)
Direction of magnetization : Radius
Magnetic poles : 2 poles
Magnetic field at 4.5mm Gap : Up to 30mT
Please inquire for more detailed information