Overcoming current quantization effects for precise current control by combining dithering techniques and Kalman filter

Hongzhong Zhu; Hiroshi Fujimoto

doi:10.1109/IECON.2012.6389281

Overcoming current quantization effects for precise current control by combining dithering techniques and Kalman filter

Hongzhong Zhu, Hiroshi Fujimoto

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

7 Citations (Scopus)

Abstract

Accurate current signals are required for precise current control of AC motor drives. However, current measurement error including the metering error and the quantization error is unavoidable due to the inaccuracy of current sensors and the quantizing feature of analog-to-digital converters. In this paper, the combination of dithering techniques and Kalman filter is presented to suppress the current quantization effects caused by A/D converters. Firstly, the dithering system is designed to whiten the total current measurement error. Then, Kalman filter is exploited to estimate the real current signals from the whitened noise. The effectiveness of the proposed approach is verified via simulations and experiments using a high-precision stage.

Original language	English
Title of host publication	Proceedings, IECON 2012 - 38th Annual Conference on IEEE Industrial Electronics Society
Pages	3826-3831
Number of pages	6
DOIs	https://doi.org/10.1109/IECON.2012.6389281
Publication status	Published - 2012
Externally published	Yes
Event	38th Annual Conference on IEEE Industrial Electronics Society, IECON 2012 - Montreal, QC, Canada Duration: Oct 25 2012 → Oct 28 2012

Publication series

Name	IECON Proceedings (Industrial Electronics Conference)

Conference

Conference	38th Annual Conference on IEEE Industrial Electronics Society, IECON 2012
Country/Territory	Canada
City	Montreal, QC
Period	10/25/12 → 10/28/12

All Science Journal Classification (ASJC) codes

Control and Systems Engineering
Electrical and Electronic Engineering

Access to Document

10.1109/IECON.2012.6389281

Cite this

Zhu, H., & Fujimoto, H. (2012). Overcoming current quantization effects for precise current control by combining dithering techniques and Kalman filter. In Proceedings, IECON 2012 - 38th Annual Conference on IEEE Industrial Electronics Society (pp. 3826-3831). Article 6389281 (IECON Proceedings (Industrial Electronics Conference)). https://doi.org/10.1109/IECON.2012.6389281

Overcoming current quantization effects for precise current control by combining dithering techniques and Kalman filter. / Zhu, Hongzhong; Fujimoto, Hiroshi.
Proceedings, IECON 2012 - 38th Annual Conference on IEEE Industrial Electronics Society. 2012. p. 3826-3831 6389281 (IECON Proceedings (Industrial Electronics Conference)).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Zhu, H & Fujimoto, H 2012, Overcoming current quantization effects for precise current control by combining dithering techniques and Kalman filter. in Proceedings, IECON 2012 - 38th Annual Conference on IEEE Industrial Electronics Society., 6389281, IECON Proceedings (Industrial Electronics Conference), pp. 3826-3831, 38th Annual Conference on IEEE Industrial Electronics Society, IECON 2012, Montreal, QC, Canada, 10/25/12. https://doi.org/10.1109/IECON.2012.6389281

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Overcoming current quantization effects for precise current control by combining dithering techniques and Kalman filter

Abstract

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All Science Journal Classification (ASJC) codes

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