Solution 1.4.5 Automobile Propulsion and Steering Systems Speedometer V speed AcceleratorDriver S car S driver Speedometer speed observed by driver Speed Controller Σ + Cruise Control Unit Brake Figure 1: Block diagram of motor with feedback The block diagram is shown in Figure 1. The dotted lines indicate the driver's abilitytosetthe speed and the cruise control unit's abilitytoreturn control of the speed to the driver when he presses the accelerator or the brake pedal. 1