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Vol. 34, No. 8(3), S&M3042

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Sensors and Materials
is an international peer-reviewed open access journal to provide a forum for researchers working in multidisciplinary fields of sensing technology.
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Sensors and Materials, Volume 35, Number 8(3) (2023)
Copyright(C) MYU K.K.
pp. 2933-2946
S&M3365 Research Paper
https://doi.org/10.18494/SAM4417
Published: August 24, 2023

Temperature Compensation for Semiconductor Gas Sensors Based on Whale Optimization Algorithm–Least-Squares Support Vector Machine [PDF]

Yunde Xu, Zhenzhen Cheng, Guofeng He, and Chengwu Liang

(Received April 4, 2023; Accepted August 7, 2023)

Keywords: temperature compensation, whale optimization algorithm (WOA), least-squares support vector machine (LSSVM), semiconductor gas sensor

A whale optimization algorithm–optimized least-squares support vector machine (WOA-LSSVM) temperature compensation model is proposed to compensate for the temperature drift of the output signal of semiconductor gas sensors in practical applications. The whale optimization algorithm is used to optimize the selection of the regularization parameter γ and the kernel function parameter σ2 in the LSSVM model, and the temperature is corrected by predicting the output of the sensor through the parameter-optimized LSSVM model. Experimental results show that after the temperature compensation of a semiconductor gas sensor by the WOA-LSSVM model, the temperature coefficient of the sensor sensitivity is reduced from 4.21 × 10−3 before compensation to 2.001 × 10−5 after compensation, and the relative error is reduced from 17.68 to 0.08%. The prediction results of the WOA-LSSVM model are compared with those of the least-squares support vector machine, particle swarm optimization–least-squares support vector machine (PSO-LSSVM), and whale optimization algorithm–back-propagation neural network (WOA-BPNN) models. The WOA-LSSVM model had the highest compensation accuracy and can effectively improve the robustness of semiconductor gas sensors to temperature drift.

Corresponding author: Zhenzhen Cheng


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Cite this article
Yunde Xu, Zhenzhen Cheng, Guofeng He, and Chengwu Liang, Temperature Compensation for Semiconductor Gas Sensors Based on Whale Optimization Algorithm–Least-Squares Support Vector Machine, Sens. Mater., Vol. 35, No. 8, 2023, p. 2933-2946.



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