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Rotational Speed Sensors: Limitations, Pre-processing and Automotive Applications
Linköping University, Department of Electrical Engineering, Automatic Control. Linköping University, The Institute of Technology.
2010 (English)In: IEEE Instrumentation & Measurement Magazine, ISSN 1094-6969, E-ISSN 1941-0123, Vol. 13, no 2, 16-23 p.Article in journal (Refereed) Published
Abstract [en]

Rotational speed sensors are critical for all vehicular driver assistance systems and other applications such as engine control and robotics. For many embedded control systems, the accuracy of the computed speed needs to be high, and this puts special demands on the pre-processing of the sensor signal. In a wired centralized solution, the computational unit can get access to the raw square wave signal from the sensor. Without a dedicated wire, the sensor must include a timer, and the cog times tk can be communicated to the processor. These cog times are the input to the algorithms described here, whose purpose is to calibrate manufacturing errors in the cog wheel and to interpolate the speed signal to the (usually time) domain of the application. A further purpose was to derive rules of thumb for how the sampling and quantization processes influence the bias and variance of the computed speed signal. Examples of applications to imbalance monitoring, frequency analysis applications, and fault detection were provided.

Place, publisher, year, edition, pages
2010. Vol. 13, no 2, 16-23 p.
Keyword [en]
Automotive engineering, Magnetic sensors, Rotation measurement, Shafts, Quantization, Velocity control
National Category
Control Engineering
Identifiers
URN: urn:nbn:se:liu:diva-55086DOI: 10.1109/MIM.2010.5438333ISI: 000276420100005OAI: oai:DiVA.org:liu-55086DiVA: diva2:315323
Note

©2009 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.

Available from: 2010-04-29 Created: 2010-04-29 Last updated: 2017-12-12

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Gustafsson, Fredrik

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
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  • modern-language-association-8th-edition
  • vancouver
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  • Other style
More styles
Language
  • de-DE
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  • sv-SE
  • Other locale
More languages
Output format
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