Droplet Image Feedback Control System in Evaporation Experiment

被引：0
作者：
Qiang Yu
Shijie Cai
Zhiqiang Zhu
Qiusheng Liu
Binghong Zhou
机构：
[1] Chinese Academy of Sciences,Center for Space Science and Applied Research
[2] Chinese Academy of Sciences,National Microgravity Laboratory, Institute of Mechanics
来源：
Microgravity Science and Technology | 2010年 / 22卷
关键词：
Image processing; Evaporation velocity; Steady-state evaporation;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
In order to realize the steady-state droplet evaporation, image feedback control system is designed based on DSP. The system has three main functions: to capture and store droplet images during the experiment; to calculate droplet geometrical and physical parameters such as volume, surface area, surface tension and evaporation velocity at a high-precision level; to keep the droplet volume constant. The DSP can drive an injection controller with the PID control to inject liquid so as to keep the droplet volume constant. The evaporation velocity of droplet can be calculated by measuring the injected volume during the evaporation. The structure of hardware and software of the control system, key processing methods such as contour fitting and experimental results are described.
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页码：139 / 144
页数：5
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