求高手翻译一下？ 在PRO/II 9.3 Reference Manual中的Chapter 10: Flowsheet Solution Algorithms中有关多变量 控制器 的几句话，请高手给翻译下。。。 The MVC is essentially an expanded form of the feedback controller. Its main advantage is that it accounts for the interdependence of control variables that are inherently coupled (several control variables affect the same specification). In the above application, for example, each MVC specification is directly affected by all the MVC variables to a greater or lesser extent. Trying to solve the problem using a series of simple feedback controllers will be inefficient and may even result in failure if the changes in the individual controller variables have opposing effects on the specifications. Note though that if the variables are not coupled, it is generally more efficient to use separate feedback controllers for each variable and specification pair. PRO/II automatically creates a loop for the MVC which incorporates all the units that are affected by changes in the MVC variables. The units inside this loop will be solved repeatedly until all the MVC specifications are met within tolerance. If the MVC affects units in a recycle loop, either the MVC loop or the recycle loop may be the outermost one. If the units affected by MVC variables and specs are all inside the recycle loop, the MVC will be solved repeatedly every time changes are made to converge the recycle loop. If, on the other hand, MVC specifications or variables affect any unit outside the recycle loop, the latter is converged each time the MVC varies a control variable. This choice of sequencing usually results in the lowest solution times. 红色部分，求翻译。。。 查看更多1个回答 . 1人已关注
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