Simple calibrator for optical reflective sensor

Sridharan, Gayathri M.

doi:10.1063/1.1137234

Review of Scientific Instruments

1983

DOI: 10.1063/1.1137234

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Simple calibrator for optical reflective sensor

Gayathri M. Sridharan

Abstract: We describe a calibrator used to evaluate the response of an optical reflective sensor as a function of the reflector distance. It is easy to fabricate and assemble.

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1985

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Electro-optical position measurement for active magnetic bearing

Sridharan

1985

Review of Scientific Instruments

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As active magnetic bearings and suspensions are position servomechanisms, accurate measurement of the position of the suspended rotor is very important. The various position sensing devices that have been in use are: optical, inductance, capacitance, and eddy current transducers. In this paper the optical measurement technique is revived using modern, solid-state infrared devices. In general, this method results in simplicity of sensor interface, adequate sensitivity and linearity, and cost effectiveness. This article describes the mechanical design feature of the electro-optics, the sensor circuitry, and the transfer characteristics of the sensor subsystem. Results of actual performance of the sensor in an electromagnetic bearing are also given.

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Electro-optical position measurement for active magnetic bearing

Sridharan

1985

Review of Scientific Instruments

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Optical Reflectance Sensor Measures Displacement in Magnetic Suspension

Sridharan

1985

IEEE Trans. Instrum. Meas.

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Simple calibrator for optical reflective sensor

Abstract: We describe a calibrator used to evaluate the response of an optical reflective sensor as a function of the reflector distance. It is easy to fabricate and assemble.

Cited by 2 publications

References 1 publication

Electro-optical position measurement for active magnetic bearing

Electro-optical position measurement for active magnetic bearing

Optical Reflectance Sensor Measures Displacement in Magnetic Suspension

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