Lecture
This lecture introduces the concept of cascade control in the context of a heat exchanger system, where disturbances in the pressure of the incoming fuel gas are addressed by implementing two controllers: one to maintain the pressure at a desired value and another to control the temperature at the output. By utilizing two loops - an internal loop for the fuel gas pressure and an external loop for the temperature - and two sensors, the system aims to achieve more precise and timely control over the process.