Car Cruise Control System Block Diagram

τ d4 3e a block diagram of the system is shown in figure 4 2.

Car cruise control system block diagram. System model and parameters. There are several inputs. If on denotes that the car engine is turned on. Indication of how far the accelerator has been pressed.

1 the parameters used in this example are as follows. The transfer function model for the cruise control problem is given below. Design diagram and working explained. Speed set by the driver of the vehicle without the need to press the accelerator pedal this system is particularly useful while driving at a constant speed as it significantly reduces driver fatigue.

What remains is to find the closed loop system function h s v s r s. The command input represents the user input that is setting the desired vehicle velocity to v0 mph. To understand how the cruise control system works we will derive the equations for the closed loop systems described by equations d4 2eand d4 3esince the effect of the slope on the velocity is of primary interest we will derive an equation that tells how the velocity error. M vehicle mass 1000 kg b damping coefficient 50 n s m r reference speed 10 m s.

The cruise control system is only active if the engine is on. If on denotes that the cruise control system should maintain the car speed. Automatic cruise control is an excellent example of a feedback control system found in many modern vehicles. A pulse is sent for every revolution of the wheel.

Please see the cruise control. System modeling page for the derivation. This is the block diagram of the hardware for such a system.