Lecture
This lecture covers the concept of cascade control in the context of regulating furnace temperature and gas pressure. It explains the use of feedback controllers, stack gas, hot and cold oil, fuel gas, and the process control involved. The instructor demonstrates the implementation of cascade control with two loops, where the internal loop manages fuel gas pressure, and the external loop controls oil temperature. The lecture also delves into cascade control schemes, dynamics, and transfer functions, emphasizing the advantages of cascade control over single-loop systems in responding to disturbances and improving control system performance.