2011
DOI: 10.1109/tim.2011.2112990
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Automatic Test Bench for Measurement of Magnetic Interference on LVDTs

Abstract: Abstract-This paper proposes an automatic test bench, based on a rigorous and repeatable measurement procedure, for the analysis of a position sensor linear variable differential transformer (LVDT). The test bench allows complete characterization of an LVDT sensor working in an interfering magnetic field by evaluating the uncertainty and nonlinearity of the sensor. This issue is addressed in neither the sensor datasheet nor the scientific literature. The potential of the method and the performance of the autom… Show more

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Cited by 32 publications
(15 citation statements)
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“…If the single mutual inductances of the windings are evaluated, through (3), the dependence of the mutual inductance with the position is linear, as moreover explained in [13]. Nevertheless, in (11) and (15), the expressions involve products between mutual inductances. Therefore, the overall relationship between voltages (in current supply) or currents (in voltage supply) with the position, in turn, involve such products, leading to a parabola-like behavior.…”
Section: B Simulation Results and Discussionmentioning
confidence: 99%
See 3 more Smart Citations
“…If the single mutual inductances of the windings are evaluated, through (3), the dependence of the mutual inductance with the position is linear, as moreover explained in [13]. Nevertheless, in (11) and (15), the expressions involve products between mutual inductances. Therefore, the overall relationship between voltages (in current supply) or currents (in voltage supply) with the position, in turn, involve such products, leading to a parabola-like behavior.…”
Section: B Simulation Results and Discussionmentioning
confidence: 99%
“…This nonlinearity can be studied and justified by looking at the model's equations, i.e., (11) and (15). If the single mutual inductances of the windings are evaluated, through (3), the dependence of the mutual inductance with the position is linear, as moreover explained in [13].…”
Section: B Simulation Results and Discussionmentioning
confidence: 99%
See 2 more Smart Citations
“…The procedure is proposed as a reference to test the LVDT sensors in the presence of an external magnetic field. An automatic test bench implements this procedure and has been improved with respect to that in [12] in order to be exploited as a tool to find an optimal supplying excitation and a reading technique under which sensitivity of a given sensor to interference is minimized. In Section II, the measurement conditions and the method are specified; in Section III, the test bench is described.…”
Section: Proposalmentioning
confidence: 99%