Absolute Rotary Encoder
Absolute rotary encoder is featured on high resolution. Generally, the higher resolution, the higher accuracy. But the absolute rotary encoder can not decide the accuracy of the whole system. Absolute encoder, motor and driver are the three main parts in servo system. Even if the absolute rotary encoder is high in resolution, motor can not match encoder, the total accuracy will be low also. So it is not the higher resolution of encoder, the better accuracy of motor. Suitable resolution is the best. Currently 17 bit resolution can meet most of application.