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Asset maintenance and reliability are topics regularly covered in trade publications, around the water cooler, and in budget planning sessions. For those that walk the plant floor, however, those same […]
Control problems range from malfunctioning valves to clogged heat exchangers along with most everything in between. Identifying such problems efficiently and isolating their source is typically a tedious task. This […]
A 25 MW combined-cycle cogeneration plant at the University of Connecticut supplies electricity to the entire UConn campus with three natural gas combustion turbine generators and one high pressure steam […]
Real-time performance monitoring to identify poorly or under-performing loops has become an integral part of preventative maintenance. Among others, rising energy costs and increasing demand for improved product quality are […]
The manner in which a measured process variable responds over time to changes in the controller output signal is fundamental to the design and tuning of a PID controller. The […]
Two of the most popular architectures for improving regulatory performance and increasing profitability are 1) cascade control and 2) feed forward with feedback trim. Both architectures trade off additional complexity […]
Evolving Best-Practices Through Simulation-Based Training: Training The Field Operator Of The Future
Simulators are widely recognized as essential to process control training as they facilitate the propagation of a companys standard operating procedure (SOPs). According to process industry estimates, nearly $8 Billion in […]
By Bob Rice1 and Doug Cooper The control objective for the pumped tank process is to maintain liquid level at set point by adjusting the discharge flow rate out of […]
By Bob Rice1 and Doug Cooper Integrating (or non-self regulating) processes display counter-intuitive behaviors that make them surprisingly challenging to control. In particular, they do not naturally settle out to […]