Behavioral and physical modeling of an incremental rotary encoder

This paper explains the development of a behavioral model of a rotary incremental encoder and its physical implementation using VHDL. The basic characteristics and the behavior of the encoders are studied. A digital electronic circuit generating the output signals of the incremental encoder and simulating its operation is designed. Results of the behavior model simulations are given. The physical model output signals waveforms are measured and compared with the simulated ones.