Level Control - Feed Forward & Back Simulation 2105

Model Description

The TSC Sim 2105 – Feed Forward and Feedback Level Control Simulation shows a vertical open top vessel being fed with a supply of water. The water exits the vessel through a single line with a valve controlling the flow.

The level of water in the vessel is partially controlled by balancing the exit valve position depending on the feed flow to the vessel and partially controlled by a controller monitoring the level in the vessel for fine tuning. This makes the system control well on upstream disturbance but gives a poorer response to downstream disturbance.

The feed to the vessel can be varied by introducing a second flow of liquid to test the effect on the level control system.

Disturbances can be added to the upstream and downstream pressures of the system to allow realistic learning on how the control method responds to the type of disturbances found on a real plant.

The P&ID settings of the controller can be altered to improve the tuning of the controller for the various conditions that can be created.

The simulation includes exercise’s based around the tuning of the level control system.

Learning Areas

  • Introduction to mass balance.
  • Introduction to process control.
  • Introduction to liquid head.
  • Benefits of feed forward control.


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