汤跃,黄志攀,汤玲迪,梅星新.基于LabVIEW的离心泵闭环恒压控制特性试验[J].农业机械学报,2013,44(3):59-63.
Tang Yue,Huang Zhipan,Tang Lingdi,Mei Xingxin.Experiment of Constant Pressure Control Characteristics for Centrifugal Pump[J].Transactions of the Chinese Society for Agricultural Machinery,2013,44(3):59-63.
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基于LabVIEW的离心泵闭环恒压控制特性试验   [下载全文]
Experiment of Constant Pressure Control Characteristics for Centrifugal Pump   [Download Pdf][in English]
  
DOI:10.6041/j.issn.1000-1298.2013.03.012
中文关键词:  离心泵  恒压供水系统  闭环控制  阶跃响应  控制性能
基金项目:“十二五”国家科技支撑计划资助项目(2011BAF14B02);江苏省农业科技支撑计划资助项目(BE2012385);江苏省农业科技支撑计划资助项目(BE2010393)
作者单位
汤跃 江苏大学 
黄志攀 江苏大学 
汤玲迪 江苏大学 
梅星新 江苏大学 
中文摘要:利用虚拟仪器构建了基于变频器内置PID控制器的离心泵恒压闭环控制测试系统,将泵系统出口端改造成3个球阀的出口形式,能定量快速地改变工况,实现了近似阶跃的输入扰动。编写LabVIEW测试程序对离心泵恒压控制特性进行了试验研究,得出了离心泵恒压控制系统给定压力的设置范围,通过比较恒参数PID控制在不同工况变化下的控制性能,发现恒参数PID控制在工况变化较快和较大时,控制性能不理想;通过分析同一工况下恒参数PID和变参数PID的控制性能,得出变参数PID控制能更好地适应离心泵恒压控制系统。
Tang Yue  Huang Zhipan  Tang Lingdi  Mei Xingxin
Jiangsu University;Jiangsu University;Jiangsu University;Jiangsu University
Key Words:Centrifugal pump  Constant pressure control system  Closed-loop control  Step response  Control characteristics
Abstract:In order to investigate the constant pressure control characteristics of centrifugal pump, a testing system on constant pressure closed-loop control of centrifugal pump water-supply system,which was based on internal PID controller of frequency converter was set up by using the virtual instrument. An innovative form of the outlet of the pump system composed of three ball valves was remodeled. It could change working condition quantitatively and rapidly. The outlet could create similar step disturbance. A LabVIEW test program was compiled to do research on control characteristics of constant pressure centrifugal pump system. The set range of the given pressure of the constant pressure control system was concluded. Contrasting the control characteristics of the fixed parameter PID regulator under different working conditions, it is showed that the control characteristics of the fixed parameter PID regulator are not good under the working conditions that changes quickly and extensively. Analyzing the control characteristics of the fixed parameter PID regulator and the variable parameter PID regulator under the same working condition, it is discovered that the variable parameter PID regulator is more applicable for the constant pressure control system.

Transactions of the Chinese Society for Agriculture Machinery (CSAM), in charged of China Association for Science and Technology (CAST), sponsored by CSAM and Chinese Academy of Agricultural Mechanization Science(CAAMS), started publication in 1957. It is the earliest interdisciplinary journal in Chinese which combines agricultural and engineering. It always closely grasps the development direction of agriculture engineering disciplines and the published papers represent the highest academic level of agriculture engineering in China. Currently, nearly 8,000 papers have been already published. There are around 3,000 papers contributed to the journal each year, but only around 600 of them will be accepted. Transactions of CSAM focuses on a wide range of agricultural machinery, irrigation, electronics, robotics, agro-products engineering, biological energy, agricultural structures and environment and more. Subjects in Transactions of the CSAM have been embodied by many internationally well-known index systems, such as: EI Compendex, CA, CSA, etc.

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