Basic understanding of rotary encoder ！

The rotary encoder is used to measure the angular position or speed control and feedback purposes in a wide range of applications, including industrial, automotive, medical and consumer markets. Modern design supports non-contact sensing method, magnetic or optical, improve reliability, performance and life.

In practice, we found that the incremental demand for light coverage type, quadrature output signals simply measuring the change in position or speed, and magnetic type generally provide absolute position information. While not a fundamental limitation in the design of optical encoders, not a model to consider providing more than 256-- position (8) resolution and magnetic properties of type 10--12 bit resolution models.

In addition, the biggest difference is that the encoder rate and life (mainly by the bearing type), other environmental factors (eg., Temperature range), and the physical properties, such as size, electrical terminals, and strength (shock, vibration, etc. Wait). Last but not least it is to cost considerations. Clearly, high performance, long life and strength have paid the price.

Previous：Roundss 10 years specializing manufacturer RS485 cheap absolute encoder
Next：How to choose an encoder