In process automation,multivariable control has always been considered an area of specialization and a luxury for those companies with sufficient scale and resources to justify its high costs of ownership.However,one of the key insights to emerge from the past few decades is that multivariable control is not a specialization.It is,instead,a fundamental aspect of virtually every process operation-ask any operator or process engineer.The question is not whether or not a process has multivariable control,but whether it is carried out manually(by the operating team)or automatically(by a method of automated multivariable control).Moreover,multivariable control can be more easily understood and readily mastered by observing traditional manual multivariable control principles and practices throughout industry,rather than by struggling with the conventional,highly specialized multivariable control paradigm.
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