We ask Greg:
What role do you see dynamic simulation playing in the future of developing the best multiphase reaction completion control?
Greg's Response:
For both batch and continuous reactors, reaction completion control seeks to provide a complete conversion of all reactants and consequ
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We ask Greg:
What role do you see dynamic simulation playing in the future of developing the best liquid single phase continuous reactor composition control?
Greg's Response:
For reactions that are all in one phase (gas, liquid, or solid), inventory control (pressure or level control) canno
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We ask Greg:
What role do you see dynamic simulation playing in the future of developing the best liquid single phase continuous reactor temperature control?
Greg's Response:
Temperature loops control the energy balance and the reaction rate through the Arrhenius equation. A cascade tempera
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We ask Greg:
What role do you see dynamic simulation playing in the future of developing the best Flow Measurement Specifications?
Greg's Response:
Lack of recognition of the adverse effects of changes in process stream composition and operating conditions, upstream and downstream piping, a
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We ask Greg:
What role do you see dynamic simulation playing in the future of developing the best Temperature Measurement Specifications?
Greg's Response:
Process efficiency and capacity are often determined by a temperature control loop performanceā€™s effect on the formation and purificatio
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We ask Greg:
What role do you see dynamic simulation playing in the future of adaptive pH Control?
Greg's Response:
In my 50+ year career in process automation, dynamic first principle simulations have played a more extensive and critical role in pH system design than any other process appl
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We ask Greg:
What role do you see dynamic simulation playing in defining the best Control Valve Specifications?
Greg's Response:
The biggest problem facing nearly all control loops stems from control valve specifications not requiring the control valve internal closure member to actually mo
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We ask Greg:
What role do you see dynamic simulation playing in the future of adaptive state-based control?
Greg's Response:
Abnormal operating conditions not only pose process safety and performance issues but also potentially cause equipment damage and environmental violations. Often oper
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We ask Greg:
What role do you see dynamic simulation playing in the future of adaptive procedure automation?
Greg's Response:
Startups and product or raw material mix transitions performance is particularly nonrepeatable because of manual actions, operator skill limitations and variations,
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We ask Greg:
What role do you see dynamic simulation playing in the future of adaptive Cascade Control?
Greg's Response:
Dynamic first principle simulations with instrumentation dynamics included can help find, test, and tune the inner loop for cascade control so that it can correct for dis
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We ask Greg:
What role do you see dynamic simulation playing in the future of adaptive Override Control?
Greg's Response:
Override control is considerably challenging because the controllers that are not selected tend to windup, the takeover of control is difficult to make bumpless, control
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We ask Greg:
What role do you see dynamic simulation playing in the future of adaptive Ratio Control?
Greg's Response:
Ratio control is much more effective than flow feedforward control if there are good flow measurements. Ratio control enables the operator to see and if necessary, adjust a
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We ask Greg:
What role do you see dynamic simulation playing in the future of adaptive Feedforward Control?
Greg's Response:
There are many measured and unmeasured disturbances to process inputs (load disturbances). A feedforward correction needs to arrive at the same point in the process a
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We ask Greg:
What role do you see dynamic simulation playing in the future of adaptive PID Tuning?
Greg's Response:
Essentially all processes are nonlinear where the open loop gain, time constants, and dead times change with operating conditions. These changes are generally quite large for
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