(41h) A Toolbox for Integrated Process Design, Control and Analysis
The objective of this paper is to present the architecture of a software prototype, ProCACD, that offers options for integrated process design, control and analysis. The starting point for an integrated design-control-analysis problem solution with the current prototype is an already existing process, whose design will be analysed and improved with respect to control. According to the work-flow implemented in this prototype, first steady state as well as dynamic models are developed through a modelling toolbox (MoT) to analyse the operability and controllability issues with respect to process design-control parameters. Next, the controller structure is designed in terms of variables to control (specified for process) and variables to manipulate (designed for process) through an analysis-based algorithm for design and control. Next, specific controllers (P, PI, PID, MPC, etc) are selected and the corresponding controller parameters are determined through established controller design methods (through in-house implemented methods as well as links to tools available on the internet, for example, the Taji-PID tuning system). Next, the performance of the implemented controllers is evaluated through analyses of closed-loop simulations through the modelling toolbox offering a selection of analysis options (controllability, operability, etc.) through CO-analyzer. Although the work-flow is sequential, decisions at every step are made taking into account design-control objectives such that return to an earlier step is minimized. That is, a decomposition-based solution scheme is employed to solve the complex mathematical problem, rather than a simultaneous solution of the involved model equations, which can be potentially very difficult to solve.
The prototype is useful for education and training as it guides the user not only through the specific problem solution steps, but also explains the need for data, the methods available for the specific step and how to select the most appropriate, and the solution strategy employed. The presentation will highlight some of the educational and training options available through the prototype as well as applications to problems taken form published literature.
ProCACD is a c# based software tool developed in Visual Studio. MoT (Model Toolbox) is a mathematical modeling tool that helps the user to quickly import and external process model and/or develop a new one. MoT also includes solvers for steady state and dynamic simulation as well as optimization. CO-analyzer contains calculators for a collection of performance (operability, controllability, cost) indicators. Other optional tools available to the user are ECON (process economics), LCSoft (Life Cycle Assessment factors), ProSAFE (a collection of safety indicators) and ProMonit (a tool for monitoring the process operation in terms of process measurements and process set-points).