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Zero-Offset in Transducer Output
Technical Paper
2005-01-2555
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Zero-offset in transducer output during airbag noise testing is often observed, but mostly ignored due to the lack of understanding of its causes and implications. In the field of high-g acceleration measurement, this phenomenon is well documented, and is referred to as zeroshift. Zero-offset occurs when a component in the measurement chain is exposed to some unexpected inputs which the component has not been designed to handle. These unexpected inputs can be mechanical, electrical, or optical. How the transducer reacts to such inputs and the amount of zero-offset produced depends on the sensing mechanism, material used, and the design of the component itself. This paper explores the causes of zero-offset from a general perspective, covering the entire measurement chain. Although much of the information and discussions are based on data obtained from acceleration measurement systems, the findings are applicable to other transducer types, such as pressure and acoustic measurements.
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Citation
Chu, A., "Zero-Offset in Transducer Output," SAE Technical Paper 2005-01-2555, 2005, https://doi.org/10.4271/2005-01-2555.Also In
SAE 2005 Transactions Journal of Passenger Cars: Electronic and Electrical Systems
Number: V114-7; Published: 2006-02-01
Number: V114-7; Published: 2006-02-01
References
- Chu A. S. 2002 Vibration Transducers Harris' Shock and Vibration Handbook 5th Harris C.M. Piersol A.G. New York McGraw-Hill
- Chu A. S. 1985 Zeroshift in Piezoelectric Accelerometers in Pyroshock Measurement (TP#290) Endevco
- Chu A. S. 1988 A Shock Amplifier Evaluation (TP#293) Endevco