Application of Tuning Rules of Cascade Control Systems for the Tennessee Eastman Process

• Main Authors: Huang, Chun-Kai, 黃群凱
• Other Authors: Wang, Gow-Bin
• Format: Others
• Language: zh-TW
• Published: 2006
• Online Access: http://ndltd.ncl.edu.tw/handle/85530946501026020480

碩士 === 長庚大學 === 化工與材料工程研究所 === 94 === In 1994,McAvoy and Ye proposed a multiple single-input single-output control loop structure which includes many cascade control systems to handle plantwide control problem of the Tennessee Eastman process. They used RGA and NI rules to analyze the pairings between manipulated variables and controlled variables. It is known that the base control structure for Tennessee Eastman process was designed by use of three stages. In next year, McAvoy and Ye modified the base control structure to improve the disturbance rejection ability. The main change was to choose the more suitable pairing for reactor pressure. Therefore, it was able to manage the disturbances in TE process more effectively. In the improved base control structure provided by McAvoy and Ye, there included nine cascade control systems. But how to determine the PID parameters for inner and outer loops of each cascade control system was not clear. This study applied the tuning rules of cascade control systems proposed in the literature to obtain the corresponding parameters of inner and outer control loops. Simulation results demonstrate that the control performance in disturbance rejection and setpoint tracking can be significantly improved by use of the obtained PID parameters in cascade control loops.