IMPROVING PERFORMANCE OF ENCODERS BASED SYSTEMS USING WAVELET TECHNIQUES |
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| J. M. D. Pereira, O. Postolache, P. Girao |
- Abstract:
- This paper aims at the accuracy improvement of low-cost encoders based systems. Calibration data together with the approximations and details of wavelet decomposition are used to obtain some important parameters of absolute encoders. Differential and integral non-linear errors are estimated and their values are used to increase measurement accuracy. An error compensated system can easily be obtained by including the encoder, a microcontroller and a memory with a code conversion table. Simulation and experimental results, obtained from a low-cost angular encoder, are used to validate the proposed characterisation method based on wavelet data processing.
- Keywords:
- encoders, wavelet transforms, error compensation
- Download:
- IMEKO-TC7-2004-077.pdf
- DOI:
- -
- Event details
- IMEKO TC:
- TC7
- Event name:
- TC7 Symposium 2004
- Title:
10th Symposium on Advances of Measurement Science
- Place:
- St. Petersburg, RUSSIA
- Time:
- 30 June 2004 - 02 July 2004