Two tank level control, where the level control of tank 2 is based on the regulation of the inlet flow to tank 1.
Liquid flows through a system of two tanks arranged in series. The level control of tank 2 is based on the regulation of the inlet flow to the tank 1.This tank represents a considerable lag in the system. The aim of the controller is to maintain a constant level in tank 2, despite disturbances which occur in the flow F3 (to the tank 2).
F0 ------> Tank 1 ------> F1
F1 + F3 ------> Tank 2 ------> F2
Assumptions
It is assumed that the density remains constant.
Proportional controller is used for controlling the tank level.
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