Control Scheme Modelling in Single Stage Evaporators
Timeline
September 2023 - December 2023
Client
Controls Class Final Project
Problem Statement
In tomato paste production and many other operations,
variations in feed and steam conditions can disrupt
product quality and energy efficiency.
This project models the dynamic behavior of a
single-effect evaporator in MATLAB and simulates
control strategies in Simulink to maintain solids
concentration and temperature within desired limits
under changing operating conditions.
Project Overview and Scope
Objective: Maintain product solids
concentration and temperature under changing
conditions.
Modeling: Developed mass, solids, and
energy balance equations; combined into a nonlinear MIMO
state-space model; linearized around steady state for easier
control design.
Implementation:
Used MATLAB to build the state-space model,
convert it into transfer functions, and design a control system.
Simulation: Created the
control setup in Simulink, including valve,
transmitter, and transducer dynamics, to test
responses to setpoint changes and disturbances.
Sketch of Control Scheme
Tools and Applications Used
MATLAB- used for mathematical modeling using the
data from Simulink. Additionally used for steady state and transfer function derivations
using a state space model.
Simulink- used to implement a full control loop
simulation, allowing visualization of dynamic responses to setpoint changes and
disturbances in variables.
Final Simulink Control Scheme
Project Documents