Predictive Functional Controller with a Similar Proportional Integral Optimal Regulator Structure： Comparison with Traditional Predictive Functional Controller and Application to Heavy Oil Coking Equipment

• Published in: Chinese journal of chemical engineering Vol. 15; no. 2; pp. 247 - 253
• Main Author: 张日东 王树青
• Format: Journal Article
• Language: English
• Published: 01.03.2007
• Subjects: 传统调节器; 比例积分最优调节器; 重油焦化设备; 预测函数控制器
• ISSN: 1004-9541; 2210-321X
• DOI: 10.1016/S1004-9541(07)60066-4

By extending the system＇s state variables, a novel predictive functional controller has been developed. The structure of this controller is similar to that of classical proportional integral （PI） optimal controller and includes a control block that can perform a feed-forward control of future P-step set points. It considers both the state variables and the output errors in its cost function, which results in enhanced control performance compared with traditional state space predictive functional control （TSSPFC） methods that consider only the predictive output errors. The predictive functional controller （PFC） has been compared with TSSPFC in terms of tracking ability, disturbance rejection, and also based on its application to heavy oil coking equipment. The results obtained show the effectiveness of the controller.