Proportional feedback control loop for autonomous distance regulation in a model car using ultrasonic sensing and motor actuation. The setpoint value feeds a P-controller that modulates motor drive to the vehicle, while an ultrasonic sensor continuously measures actual distance and feeds back to the controller via interrupt-driven sampling. This closed-loop architecture demonstrates real-time feedback control principles essential for collision avoidance and autonomous navigation. Fork this diagram on Diagrams.so to customize sensor types, add derivative or integral terms, or adapt for different vehicle platforms and distance ranges.