1. Block diagram: Identify the function of each block and the desired input variable, output variable,
and measured variable. Use this closed-loop feedback control system as a model as appropriate.
Desired output
response
Error
Controller
Actuator
Process
Measurement output
Sensor
Feedback
Figure 1: Figure 1.3 from textbook - Closed-loop feedback system
Actual
output
a) [E1.8 from textbook] Modern automated highways are being implemented around the world.
Consider two highway lanes merging into a single lane. Describe a feedback control system
carried on the automobile trailing the lead automobile that ensures that the vehicles merge
with a prescribed gap between the two vehicles.
b) [P1.13 from textbook] A common example of a two-input control system is a home shower
with separate valves for hot and cold water. The objective is to obtain (1) a desired
temperature of the shower water and (2) a desired flow of the water. Sketch a block diagram
of the closed-loop control system.
