Recently, Skogestad (2004} have also proposed a systematic method for control structure. The proposed research will focus on further improvement of this method, including the following issues:
1. Self-optimizing Control
2. Achievable decentralized perfor mance
3. Decentralized integral controllability
4. Computational complexity
5. Complexity of the control system
6. Secondary controlled variables
When completed, the utility of the proposed approach will be demonstrated through case studies, e.g. the Vin yl Acetate process. At the completion of this project, a systematic method will emerge that would help the plant engineers for control structure design of new plants as well as retrofit of existing plants. It is expected that in addition to improving cont rol, the analysis will also reveal some directions for design of energy efficient plants.