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http://hdl.handle.net/10397/20128
Title: | Direct current force sensing device based on compressive spring, permanent magnet, and coil-wound magnetostrictive/piezoelectric laminate | Authors: | Leung, CM Or, SW Ho, SL |
Issue Date: | 2013 | Source: | Review of scientific instruments, 2013, v. 84, no. 12, 125003, p. 125003-1-125003-5 | Abstract: | A force sensing device capable of sensing dc (or static) compressive forces is developed based on a NAS106N stainless steel compressive spring, a sintered NdFeB permanent magnet, and a coil-wound Tb0.3Dy0.7Fe 1.92/Pb(Zr, Ti)O3 magnetostrictive/piezoelectric laminate. The dc compressive force sensing in the device is evaluated theoretically and experimentally and is found to originate from a unique force-induced, position-dependent, current-driven dc magnetoelectric effect. The sensitivity of the device can be increased by increasing the spring constant of the compressive spring, the size of the permanent magnet, and/or the driving current for the coil-wound laminate. Devices of low-force (20 N) and high-force (200 N) types, showing high output voltages of 262 and 128 mV peak, respectively, are demonstrated at a low driving current of 100 mA peak by using different combinations of compressive spring and permanent magnet. | Publisher: | American Institute of Physics | Journal: | Review of scientific instruments | ISSN: | 0034-6748 | EISSN: | 1089-7623 | DOI: | 10.1063/1.4838615 | Rights: | © 2013 AIP Publishing LLC. This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in C. M. Leung, S. W. Or and S. L. Ho, Rev. Sci. Instrum. 84, 125003 (2013) and may be found at https://dx.doi.org/10.1063/1.4838615 |
Appears in Collections: | Journal/Magazine Article |
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Leung_Direct_Force_Sensing.pdf | 1.1 MB | Adobe PDF | View/Open |
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