tailieunhanh - Lecture Chemical process control - Chapter 18

a | Control of Multiple-Input Multiple-Output Processes Chapter 18 Multiloop controllers Modeling the interactions Relative Gain Array RGA Singular Value Analysis SVA Decoupling strategies Chapter 18 Control of multivariable processes In practical control problems there typically are a number of process variables which must be controlled and a number which can be manipulated Example product quality and through put must usually be controlled. Several simple physical examples are shown in Fig. . Note process interactions between controlled and manipulated variables. Chapter 18 Liquid tì In-line blending system ifrl ỮISÍÍIlatian column Coolant Feed Figure . f ữ as-liquid separator Physical examples of multivariable control problems. Feed ------- Steam s SEE FIGURE in .