High accuracy magnetic encoder

Rotary Position Sensing

Issue…

Magnetic encoders that can be used in poor environments are attractive, but if high accuracy is required,is there any other solution except for using optical encoders?

Then what is our solution…

Magnetic encoders using the AK7452 can achieve an accuracy of about 0.5° * in a Shaft-End configuration. * Figure 1 shows an example that the center of the magnet and the center of the sensor are roughly assembled (within 0.5mm misalignment).

The AK7452 can be used in high temperature environments caused by high-speed motor rotation, as long as it is within the operating temperature range.

(AK7452 operating temp.: -40 to 125°C)

Figure 1. Angle linearity error in Shaft-End configuration with rough assembly

Even when higher accuracy is required, the AK7452 can achieve an accuracy of about 0.1° by performing its own calibration.

Figure 2. Angle linearity error in Shaft-End configuration with calibration

Does calibration method to achieve an accuracy of about 0.1° require complicated work? Refer to "Simple calibration for angle accuracy of 0.1° ".

For more details, contact us with the inquiry form.