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| 采样器气体流量闭环控制研究 | |
| 引用本文： | 吴付祥,陈建阁,王静宇.采样器气体流量闭环控制研究[J].计量学报,2017,38(1):87-90. |
| 作者姓名： | 吴付祥 陈建阁 王静宇 |
| 作者单位： | 1.中煤科工集团重庆研究院有限公司, 重庆 400037 2.重庆国能探矿权采矿权评估有限公司, 重庆 400011 |
| 基金项目： | 国家自然科学基金，重庆市科技人才培养(新产品研发团队建设)，中煤科工集团有限公司科技项目 |
| 摘 要： | 针对传统采样器气体流量采用开环控制,随着抽气泵负载的增加引起气体流量的下降,导致采样气体体积误差偏大的问题,提出了闭环流量控制的气体采样器,并对其进行了研究。利用微型气体质量流量传感器、可调微型气泵及控制器组成了闭环控制系统,并结合带死区的增量PID控制算法和积分累积气体采样的方式,消除了采样流量由于负载的变化而引起的误差。最后通过实验证明了闭环控制的采样器气体流量具有较好的线性度及较高的精度。 |
| 关 键 词： | 计量学 粉尘检测 气体流量 采样器 闭环控制 增量PID 积分累计 |
| 收稿时间： | 2015-01-06 |
Development of Dust Sampler Based Flow Closed-loop Control |
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| WU Fu-xiang,CHEN Jian-ge,WANG Jing-yu.Development of Dust Sampler Based Flow Closed-loop Control[J].Acta Metrologica Sinica,2017,38(1):87-90. | |
| Authors: | WU Fu-xiang CHEN Jian-ge WANG Jing-yu |
| Affiliation: | 1.Chongqing Research Institute of China Coal Technology & Engineering Group Corporation, Chongqing 400037, China 2.Chong Qing National Energy Mining Industry Evalluation Consultancy, Chongqing 400011, China |
| Abstract: | Contrary to dust sampler based on open-loop flow control whose sample volume existed errors with the load changes, a closed-loop flow control gas sampler was proposed and studied. A closed loop control system was constituted, using a micro gas mass flow sensor, adjustable micro-pump and controller. Combined with incremental PID control algorithm with dead and method of point accumulated gas sampling, this will eliminate errors caused by changes in load. Finally, the experimental results show that the gas flow of sampler closed-loop control have good linearity and high precision. |
| Keywords: | metrology dust detection gas flow sampler closed-loop control incremental PID point accumulated |
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