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Tracking Control System Using an Incident Radiation Angle Microsensor

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8 Author(s)
Jos M. Quero ; Dept. of Electron. Eng., Seville Univ. ; Carmen Aracil ; Leopoldo G. Franquelo ; Jordi Ricart
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For some industrial applications, an accurate estimation of a light source position is needed. That is the case for a heliostat, a device that projects sunlight onto a focus hundreds of meters away from its aiming point. In this paper, we present a novel sensor design for generating an alignment error signal. Included is a detailed study of its response, which shows that certain geometrical design parameters are necessary to achieve desired accuracy. This sensor has been implemented using microelectromechanical system techniques to achieve a robust structure at low cost and it has been successfully applied to sun-tracking systems. Experimental results obtained in field tests are included

Published in:

IEEE Transactions on Industrial Electronics  (Volume:54 ,  Issue: 2 )