Characterization of Magnetic Immunity of an Ironless Inductive Position Sensor

The ironless inductive position sensor is a novel linear position-sensing device that should exhibit immunity to external magnetic fields while simultaneously guaranteeing high-precision measurements in harsh environments. This paper focuses on the characterization of the sensor's working principle and magnetic field immunity. The sensor is tested, with both voltage and current supply, with different dc and slowly varying magnetic field patterns in order to prove its immunity and analyze the differences and similarities between the two supply cases. The measurements are performed with a test bench on a custom prototype, which is especially manufactured for this purpose.

[1]  Bernd Dehning,et al.  DETERMINATION OF THE ACCURACY OF WIRE POSITION SENSORS , 2000 .

[2]  Alessandro Masi,et al.  An analytical model of the effect of external DC magnetic fields on the AC voltages of an LVDT , 2010, 2010 IEEE Instrumentation & Measurement Technology Conference Proceedings.

[3]  S. Pullteap,et al.  An Extrinsic Fibre Optic Interferometer with Possible Signal Fading Compensation for Vibrometric Applications , 2005, 2005 IEEE Instrumentationand Measurement Technology Conference Proceedings.

[4]  J. Megusar,et al.  Low temperature fast-neutron and gamma irradiation of Kapton® polyimide films , 1997 .

[5]  Seng-Chi Chen,et al.  Inductive Displacement Sensors with a Notch Filter for an Active Magnetic Bearing System , 2014, Sensors.

[6]  Alexander Golubev,et al.  RADIATION HARDNESS OF INSULATING COMPONENTS FOR THE NEW HEAVY-ION ACCELERATOR FACILITY , 2010 .

[7]  Alessandro Masi,et al.  Study of Magnetic Interference on an LVDT: FEM Modeling and Experimental Measurements , 2011, J. Sensors.

[8]  Y. Perriard,et al.  Electromagnetic model of an ironless inductive position sensor , 2012, 2012 IEEE International Instrumentation and Measurement Technology Conference Proceedings.

[9]  Andrew Holmes-Siedle,et al.  Handbook of Radiation Effects , 1993 .

[10]  E. Friebele,et al.  Radiation damage in single-mode optical-fiber waveguides. , 1983, Applied optics.

[11]  A. Herty,et al.  Radiation induced effects on the sensors of the Hydrostatic Leveling System for the LHC low beta quadrupoles , 2005, 2005 8th European Conference on Radiation and Its Effects on Components and Systems.

[12]  Alessandro Masi,et al.  Automatic Test Bench for Measurement of Magnetic Interference on LVDTs , 2011, IEEE Transactions on Instrumentation and Measurement.

[13]  K. Ara.  A Differential TransformerWith Temperature- and Excitation-Indep endent Output , 1972 .

[14]  A. Masi,et al.  LHC Collimators Low Level Control System , 2007, IEEE Transactions on Nuclear Science.

[15]  Yves Perriard,et al.  Ironless position sensor with intrinsic immunity to external magnetic fields , 2011, 2011 IEEE SENSORS Proceedings.

[16]  Xinlei Zhou,et al.  Wide-Range Displacement Sensor Based on Fiber-Optic Fabry–Perot Interferometer for Subnanometer Measurement , 2011, IEEE Sensors Journal.

[17]  T. Weiler,et al.  LHC collimation system hardware commissioning , 2007, 2007 IEEE Particle Accelerator Conference (PAC).

[18]  Gerard C. M. Meijer,et al.  A low-cost, smart capacitive position sensor , 1992 .

[19]  G. Spiezia,et al.  Design of a Linear Variable Differential Transformer With High Rejection to External Interfering Magnetic Field , 2010, IEEE Transactions on Magnetics.

[20]  Melanie N. Ott,et al.  Radiation effects data on commercially available optical fiber: database summary , 2002, IEEE Radiation Effects Data Workshop.

[21]  Larry K. Baxter,et al.  Capacitive Sensors: Design and Applications , 1996 .

[22]  A. Masi,et al.  The LHC collimator controls architecture - design and beam tests , 2007, 2007 IEEE Particle Accelerator Conference (PAC).

[23]  A. Masi,et al.  LVDT Conditioning on the LHC Collimators , 2008, IEEE Transactions on Nuclear Science.

[24]  Pavel Ripka,et al.  Magnetic sensors and magnetometers , 2002 .

[25]  Francis Berghmans,et al.  Toward the development of radiation-tolerant instrumentation data links for thermonuclear fusion experiments , 2002 .

[26]  David S. Nyce.  Linear position sensors , 2003 .

[27]  William B. Ribbens.  Understanding automotive electronics , 1988 .