15 November 2017 Application of high precision temperature control technology in infrared testing
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Proceedings Volume 10605, LIDAR Imaging Detection and Target Recognition 2017; 106052Q (2017) https://doi.org/10.1117/12.2294028
Event: LIDAR Imaging Detection and Target Recognition 2017, 2017, Changchun, China
Abstract
In allusion to the demand of infrared system test, the principle of Infrared target simulator and the function of the temperature control are presented. The key technology of High precision temperature control is discussed, which include temperature gathering, PID control and power drive. The design scheme of temperature gathering is put forward. In order to reduce the measure error, discontinuously current and four-wire connection for the platinum thermal resistance are adopted. A 24-bits AD chip is used to improve the acquisition precision. Fuzzy PID controller is designed because of the large time constant and continuous disturbance of the environment temperature, which result in little overshoot, rapid response, high steady-state accuracy. Double power operational amplifiers are used to drive the TEC. Experiments show that the key performances such as temperature control precision and response speed meet the requirements.
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Haiyuan Cao, Haiyuan Cao, Yong Cheng, Yong Cheng, Mengzhen Zhu, Mengzhen Zhu, Hua Chu, Hua Chu, Wei Li, Wei Li, } "Application of high precision temperature control technology in infrared testing", Proc. SPIE 10605, LIDAR Imaging Detection and Target Recognition 2017, 106052Q (15 November 2017); doi: 10.1117/12.2294028; https://doi.org/10.1117/12.2294028
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