A contribution to the design of fast code converters for position encoders

Pseudorandom binary sequences (PRBS) are very useful in many areas of applications. Absolute position encoders based on PRBS have many advantages. However, the pseudorandom code is not directly applicable to the digital electronic systems, hence a converter from pseudorandom to natural binary code i...

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Bibliographic Details
Published in:International journal of electronics 2016-10, Vol.103 (10), p.1654-1664
Main Authors: Denic, Dragan B., Dincic, Milan R., Miljkovic, Goran S., Peric, Zoran H.
Format: Article
Language:English
Subjects:
Coders
Codes
Converters
Design engineering
Electrical engineering
Electronics
Encoders
Fibonacci PRBS generator
Galois PRBS generator
Generators
Logic
Mathematical analysis
Position encoders
Pseudorandom
pseudorandom binary sequences (PRBS)
pseudorandom/natural code conversion
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Summary:Pseudorandom binary sequences (PRBS) are very useful in many areas of applications. Absolute position encoders based on PRBS have many advantages. However, the pseudorandom code is not directly applicable to the digital electronic systems, hence a converter from pseudorandom to natural binary code is needed. Recently, a fast pseudorandom/natural code converter based on Galois PRBS generator (much faster than previously used converter based on Fibonacci PRBS generator) was proposed. One of the main parts of the Galois code converter is an initial logic. The problem of the design of the initial logic has been solved only for some single values of resolution, but it is still not solved for any value of resolution, which significantly limits the applicability of the fast Galois code converter. This paper solves this problem presenting the solution for the design of the initial logic of the fast Galois pseudorandom/natural code converters used in the pseudorandom position encoders, in general manner, that is for any value of the resolution, allowing for a wide applicability of the fast Galois pseudorandom position encoders. Rigorous mathematical derivation of the formula for the designing of the initial logic is presented. Simulation of the proposed converter is performed in NI MultiSim software. The proposed solution, although developed for pseudorandom position encoders, can be used in many other fields where PRBS are used.
ISSN:0020-7217
1362-3060
DOI:10.1080/00207217.2016.1138521