A design synthesis for a microflow control system is presented based on the interrogation of an analytical model, testing, and observation. The key issues relating to controlling a microflow using a variable geometry flow channel are explored through the implementation and testing of open and closed-loop control systems. The reliance of closed-loop systems on accurate flow measurement and the need for an open-loop strategy are covered. A valve and control system capable of accurately controlling flowrates between 0.09 and 400 ml/h and with a range of 900:1 is demonstrated.
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机译：基于对分析模型，测试和观察的询问，提出了微流控制系统的设计综合。通过实施和测试开环和闭环控制系统，探索了与使用可变几何形状的流动通道控制微流有关的关键问题。涵盖了闭环系统对精确流量测量的依赖以及对开环策略的需求。展示了一种阀和控制系统，该系统能够精确地控制0.09至400 ml / h的流量，范围为900：1。
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