Research on application of polynomial fitting technique in rotary kiln infrared temperature measurement system |
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| Institution: | 1. Institute of Research and Development, Duy Tan University, 03 Quang Trung, Danang, Viet Nam;2. Thuyloi University, 175 Tay Son, Dong Da, Hanoi, Viet Nam;3. Department of Science Management, Duy Tan University, 03 Quang Trung, Danang, Viet Nam;4. Department of Physics and Oxide Research Center, Hankuk University of Foreign Studies, Yongin 17035, South Korea;1. Key Laboratory of Luminescence Analysis and Molecular Sensing, Ministry of Education, School of Materials and Energy, Southwest University, Chongqing 400715, PR China;2. Analytical and Testing Center, Southwest University, Chongqing 400715, PR China;1. Laboratory for Analysis and Synthesis of Industrial Processes (LASPI), University Mohammed V, Mohammadia School of Engineers, Rabat, Morocco;2. Euromed University of Fes, Fez, Morocco;1. Key Laboratory of Luminescence Analysis and Molecular Sensing, Ministry of Education, School of Materials and Energy, Southwest University, Chongqing, 400715, PR China;2. Materials for Energy Conversion and Storage, Department of Chemical Engineering, Delft University of Technology, Delft, 2629 HZ, the Netherlands;3. Analytical and Testing Center, Southwest University, Chongqing, 400715, PR China;4. Key Laboratory of Laser Technology and Optoelectronic Functional Materials of Hainan Province, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571158, PR China |
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| Abstract: | Aiming at the linear temperature compensation algorithm’s disadvantage of temperature measurement error in rotary kiln infrared scanning temperature measurement process, this paper proposes a precise nonlinear cubic polynomial fitting temperature compensation algorithm. The proposed algorithm compensates the temperature values of scanning points on rotary kiln surface by following steps: Calculating temperature difference between the real temperature value of rotary kiln and temperature value measured by infrared scanning temperature measurement system; Fitting the temperature difference data with cubic polynomial; Using the obtained function to compensate temperature. Experimental result shows that compared with the usual linear temperature compensation algorithm, the accuracy of proposed algorithm has raised about 2.25 times when cubic polynomial is used. |
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| Keywords: | Rotary kiln Temperature compensation Polynomial fitting Measurement accuracy |
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