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Altera_Forum
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12 years ago

Incremental Quadrature Encoder

I am posting this for comments but also if someone wants to use it... Below is the code I made for decoding quadrature incremental encoders. Enc A and Enc B are inputs from the encoder. ...
Altera_Forum's avatar
Altera_Forum
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12 years ago

There's room for improvements. A good quadrature encoder is expected to count on any rising or falling input edge, not only rising edge of one input channel. This way, the encoder resolution can be increased by a factor of four.

Acting on all edges is also necessary to detect overun conditions respectively inplausible input sequences (hardware defects) and flag them as error.