PID Control and Modeling of Nonlinear Liquid Tank in MATLAB and Simulink - Control Engineering 

#controltheory #controlengineering #physics #fluidmechanics #mechanics #pressure #mechatronics #control #aleksandarhaber #mechanics #engineering #mechanicalengineering
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In this control engineering and process control tutorial, we explain how to model and implement a PID controller for controlling a fluid level inside a tank or reservoir in Simulink and MATLAB. This is one of the most important problems in chemical engineering, mechanical engineering, and process engineering. The goal is to control the liquid level by controlling the input flow rate. Starting from the nonlinear dynamical model of the liquid tank, we explain how to develop a Simulink model. Then, we model the PID controller in Simulink and we simulate the closed-loop dynamics. We also explain how to model the actuator saturation (pump flow rate saturation).