A method for calibrating a single facet small heliostat based on extracting invariant moments
A. Abdelmagid, M., M.Naguib, M., M. Hamdy, A., A.EL.Samahy, ., A.Rady, M. (2022). A method for calibrating a single facet small heliostat based on extracting invariant moments. EKB Journal Management System, 51(1), 43-49. doi: 10.21608/erjsh.2022.224281
M. A. Abdelmagid; M. M.Naguib; A. M. Hamdy; ِA. A.EL.Samahy; M. A.Rady. "A method for calibrating a single facet small heliostat based on extracting invariant moments". EKB Journal Management System, 51, 1, 2022, 43-49. doi: 10.21608/erjsh.2022.224281
A. Abdelmagid, M., M.Naguib, M., M. Hamdy, A., A.EL.Samahy, ., A.Rady, M. (2022). 'A method for calibrating a single facet small heliostat based on extracting invariant moments', EKB Journal Management System, 51(1), pp. 43-49. doi: 10.21608/erjsh.2022.224281
A. Abdelmagid, M., M.Naguib, M., M. Hamdy, A., A.EL.Samahy, ., A.Rady, M. A method for calibrating a single facet small heliostat based on extracting invariant moments. EKB Journal Management System, 2022; 51(1): 43-49. doi: 10.21608/erjsh.2022.224281

A method for calibrating a single facet small heliostat based on extracting invariant moments

Engineering Research Journal (Shoubra)
Volume 51, Issue 1, January 2022, Page 43-49  XML PDF (977.09 K)
Document Type: Research articles
DOI: 10.21608/erjsh.2022.224281
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Authors
M. A. Abdelmagid1; M. M.Naguib2; A. M. Hamdy3; ِA. A.EL.Samahy4; M. A.Rady1
1Department of Mechanical Engineering, Faculty of Engineering, Helwan, Egypt
2Electrical Power and Machines Engineering, Faculty of Engineering
3Department of Computers Engineering and Systems, Faculty of Engineering, Helwan, Egypt
4Electrical Power and Machines Engineering, Faculty of Helwan
Abstract
paper presents a new technique for calibrating heliostat errors which affect the heliostat efficiency and the production of thermal energy from the reflected beam from mirror to the target. This technique is based on analyzing the image for identifying different deterministic error types in single facet small heliostat, such as pedestal tilt and deformation due to wind loading. The technique depends on the image constructed from reflected beam. For each image, seven features are extracted and stored. These features are based on the moment invariant technique, which is insensitive to translation, rotation, and scale changes. The obtained results verify accurate and fast operation for heliostat calibration. The computed false negative rate is 0.06 and the recognition rate is 94.0476 %.
Keywords
Image analysis; Calibration; Heliostat
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