id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
cet-80	Wu, B.; Luo, X.-L.	Process Control and Coordinating Optimisation for the Multi- Feed Demethaniser in Ethylene Complex 	2017	6	.pdf	application/pdf	4039	130	50	And there are two kinds of control strategies to achieve the control objective, which are open- loop and close-loop control, as shown in Table 1. Table 1: Control strategies for the two-input-two-output system Controlled variable Open-loop Close-loop y1 Setting control of input u1 Cascade control of output y1 y2 Setting control of input u2 Cascade control of output y2 In the distillation column, outputs y1 and y2 represent the mole fraction of the key component or temperature of the overhead and bottom, and inputs u1 and u2 represent the reflux and reboil flow rate of the bottom, respectively.	cache/cet-80.pdf	txt/cet-80.txt