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在一个操作量可以影响多个被调量的场合下,可采用取代调节选择器。普通的例子是在压缩机站对入口压力和出口压力进行选择调节。不过,这个概念也可用于包括两个以上调节器和调节回路的许多其他系统。其中,主变量的选择受手控或其他外界因素的影响。当两个或两个以上彼此独立的被调量依靠同一个操作量时,可采用取代调节。应当选择在任何瞬间都必须受到最大限制的变量作为主变量,使它维持在设定点,那时其他被调量可以偏离它们的设定点,只要其偏差处于允许的
In an operation can affect the amount of a number of cases to be adjusted, you can use instead of adjusting the selector. A common example is the selective adjustment of the inlet pressure and the outlet pressure at the compressor station. However, this concept can also be used with many other systems that include more than two regulators and control loops. Among them, the choice of the main variables by hand or other external factors. When two or more independent of each other to be adjusted by the same amount of operation, the adjustment can be replaced. The variable that must be maximally limited at any moment should be chosen as the primary variable so that it is maintained at the set point, at which point the other variables can be deviated from their set point as long as the deviation is within the allowable