“沈文”的讨论是基于系统在运行中,当大阀打开后小阀仍然打开,这是由于使用通用的阀门定位器的结果。在这种情况下,即使不采用信号重叠法,仍然会产生流量突变,尽管这种突变比采用信号重叠法小些。那么,怎样才能克服流量的突变呢?关键在于在任何时刻只能有一个阀门开启。本文只讨论等百分比阀(其流量特性在 The discussion of Shen Wen was based on the system being in operation, with the small valve still open after the large valve was opened, as a result of the use of a common valve positioner. In this case, a sudden change of flow will still occur even if the signal overlap method is not used, though this kind of mutation is smaller than the signal overlap method. So, how can we overcome the sudden change of flow? The key point is that only one valve can be opened at any time. This article only discusses equal percentage valve (the flow characteristics in