PH neutralization mini plant

Hi, my project is a PH neatralization system, How can i use simulink, and arduino mega to control the dosing of the reagents using PWM to control the speed of the peristaltic pumps, real time monitoring of the PH. Need help in controlling the mini plant.

Answer 1

[Kothuri]

Hi Silindile Makhanya,

I understand that you would like to create a pH neutralization system using Simulink and an Arduino Mega. This can be achieved by following the below steps:

• Installing Simulink Support Package for Arduino by > MATLAB > Add-Ons menu > Search for “Simulink Support Package for Arduino Hardware” > install.
• Below link provides information on installation of Simulink support package for Arduino

https://www.mathworks.com/help/simulink/supportpkg/arduino_ug/install-support-for-arduino-hardware.html

• Connect your Arduino Mega to your computer via USB.
• In Simulink, create a new model and add the “Arduino” block from the Simulink Library Browser.
• Designing the Control System in Simulink by creating the pH Neutralization Model, PI Controller and configure the PWM signal.
• Use the “Scope” block in Simulink to visualize the pH levels in real-time.
• You can control a mini plant for pH neutralization by setting up a feedback loop to adjust the dosing of reagents based on real-time pH measurements.
• Once the model is complete, you can deploy it to the Arduino Mega.
• Go to the “Deploy to Hardware” option in Simulink and select Arduino Mega.

Below link provides an example model of pH neutralization control

https://www.mathworks.com/matlabcentral/fileexchange/28839-ph-neutralization-control-by-using-smith-predictor-and-adrc