Tag Archive: constraint

May
02

Applications – Batch Chemical Reactor Control

As mentioned in my previous blogs on the book Control Loop Foundation – Batch and Continuous Processes, the application examples included in Chapter 16 illustrate the various ways single loop and multi-loop control techniques may be used automate plant control. The second workshop exercise in this chapter allows the reader to explore the different features …

Continue reading »

Mar
07

Model Predictive Control

Charlie Cutler and Ramaker caused quite a stir in 1980 when they presented a paper that provided information on a new technique known as Dynamic Matrix Control. Shell Oil had developed and deployed this technique for the control of large interactive multiple input-multiple output (MIMO) processes such as refinery distillation columns. This work by Shell …

Continue reading »

Feb
07

Override Control

To ensure proper process operating conditions, it may be necessary to maintain some measurable parameters such as vessel temperature, pressure, and level within certain operating limits (constraint limits). The implementation of override control is often the most effective way to maintain the process within its operating constraint limits. Tools are provided in most control systems …

Continue reading »