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New pseudorandom code reading method applied to position encoders

New pseudorandom code reading method applied to position encoders

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© The Institution of Electrical Engineers
Published

A new code reading method using two reading heads is proposed for use in pseudorandom position encoders. This method provides pseudorandom n-tuple formation continuity and eliminates systematic errors in code reading. Such an approach additionally enables simple realisation of a permanent checking of code reading correctness.

Inspec keywords: encoding; codes; transducers; position measurement

Other keywords: reading heads; pseudorandom n-tuple formation; position encoders; pseudorandom code reading method

Subjects: Signal processing and conditioning equipment and techniques; Sensing devices and transducers; Codes; Spatial variables measurement

References

    1. 1)
      • E.M. Petriu . Absolute-type position transducers using a pseudorandom encoding. IEEE Trans. , 950 - 955
    2. 2)
      • E.M. Petriu , J.S. Basran . On the position measurement of automated guided vehicles using pseudorandom encoding. IEEE Trans. , 799 - 803
    3. 3)
      • F. MacWilliams , N. Sloane . Pseudo-random sequences and arrays. Proc. IEEE , 1715 - 1729
    4. 4)
      • B. Arazi . Position recovery using binary sequences. Electron. Lett. , 61 - 62
    5. 5)
      • E.M. Petriu , J.S. Basran , F.C.A. Groen . Automated guided vehicle position recovery. IEEE Trans. , 1 , 254 - 258
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