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Quadrature Encoders The image below shows the disk for a quadrature encoder. This device creates a series of pulse strings when a shaft rotates, and is used to measure angle or speed of a shaft. There are two rings of alternating back and white areas. The inner ring is the ‘A’ ring, and the outer ring is the ‘B’ ring. Each ring has a sensor that returns a ‘1’ when faced with white, and a ‘0’ when faced with back. These sensors output two pulse trains, normally called ‘A’ and ‘B’ as per the ring. They are offset, and depending on whether the shaft is turning clockwise or anti-clockwise the A channel rising edge will lead or trail the B channel rising edge. There is a third ring with an index pulse. You do not need to consider this ring for this assignment. You are to design a circuit, and produce the Sum of Products (SoP) terms for that circuit, to create a counter that allows us to determine where the shaft is currently located. You need to explain how your circuit works, and why you selected the SoP in your solution. There are several parts to this assignment. For a Pass mark your counter must give an accurate position count, incrementing or decrementing as the shaft is rotated. For a Credit or Distinction mark you need to add in timing information for you
ELEC2042 2020 Session 2 Assignment 2 (Version 2) Due: Friday 23rd October 2020 Quadrature Encoders The image below shows the disk for a quadrature…