application-note · English
Analog Computer Application Bulletin No. AB-856: Process Control Problems Yield to the Analog Computer
EAI Application Bulletin No. AB-856, reprinted from Control Engineering, demonstrates how an analog computer can simulate a batch chemical process and its cascade control system to determine optimum controller settings and valve configurations. The bulletin covers mathematical modeling of the kettle, water jacket, and steam/cooling systems using integrators, multipliers, and potentiometers, with example simulation runs comparing single-loop and cascade control strategies. Results show that the cascade system substantially outperforms single-loop control in rejecting disturbances such as sudden steam-pressure changes.
process controlbatch heating simulationcascade controltemperature transmitter simulation