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27433 Online monitoring of the maximum angle error in AMR sensors
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Zambrano Constantini, A.C. and Kerkhoff, H.G. (2016) Online monitoring of the maximum angle error in AMR sensors. In: IEEE 22st International On-Line Testing Symposium, IOLTS 2016, 4-6 July 2016, Feliu de Guixols, Catalunya, Spain. IEEE. ISBN 978-1-5090-1507-8

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Official URL: http://dx.doi.org/10.1109/IOLTS.2016.7604703

Abstract

Anisotropic Magnetoresistance (AMR) sensors are often used for angle measurements. The sensor outputs consist of two sinusoidal signals that show undesired characteristics as offset voltage, amplitude imbalance and harmonics, which affect the angle measurements. These parameters change due to aging effects, but until now it is considered that these variations do not affect the sensor accuracy. The largest sources of angle error are compensated at the start of the sensor life but they are not monitored during its lifetime. However, the accuracy requirements are increasing and in the future, it will be necessary to verify that the sensor satisfies the accuracy despite aging. This research proposes different equations that are useful to monitor online the maximum angle error due to different sources. Based on this information it is possible to take action in order to guaranty the accuracy during the entire sensor lifetime.

Item Type:Conference or Workshop Paper (Full Paper, Poster)
Research Group:EWI-CAES: Computer Architecture for Embedded Systems
Research Program:CTIT-General
Research Project:IMMORTAL: Integrated Modelling, Fault Management, Verification and Reliable Design Environment for Cyber-Physical Systems
Uncontrolled Keywords:AMR sensors; angle error; online monitoring
ID Code:27433
Status:Published
Deposited On:29 November 2016
Refereed:Yes
International:Yes
More Information:statistics

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