| Citation: | ZHOU Tingbo, ZHANG Zhengke, TIAN Yongqiang, et al. Design and adjustment tests of an extremely low speed calibration facility for anemometers[J]. Journal of Aerospace Power, 2025, 40（1）：20230189 doi: 10.13224/j.cnki.jasp.20230189
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Considering the difficult problems existing in current extremely low speed calibration facilities that the calibration accuracy for anemometers is not high enough and the calibration is vulnerable to the contamination of temperature and humidity discrepancies, an extremely low speed calibration facility with high control precision of velocity was designed with air temperature and humidity being able to be controlled to required values. The facility had a velocity range of 0.1 to 1.0 m/s, an air temperature range of ambient atmospheric temperature to 60 ℃ and a humidity range of 20%RH to 80%RH. The layout arrangement was discussed. The mechanical structure and its components and accessories were designed and illustrated. The motion velocity control system and temperature and humidity control system were designed, tested and adjusted. The results of the adjustment tests showed that the maximum velocity control error and the maximum relative velocity control error were
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