ABSTRACT
This chapter explains the disadvantages of the adapters used between encoders and microcontrollers. The main advantage of the proposed design is its simplicity and reliability. It can be used for any speed range that may occur in an industrial environment. It can catch even one single pulse by using only one series of signals. Rotary encoders are mounted directly to motors or shafts driven by motors. The travelled distance of driven table by the shaft is related to the rotational angle of the shaft. Angular velocity, rotational direction, swept angle, the position of table and virtual speed of table are calculated from the two signals. There are various approaches for finding direction, position and velocity by utilizing the two square-shaped signals that have a 90 degree phase difference between them. Adapter circuits used in industry generally produce signals to define the rotational direction and pulse for the travelled distance between them.
