Car Cruise Control System Block Diagram

The purpose of the cruise control system is to maintain a constant vehicle speed despite external disturbances such as changes in wind or road grade this is accomplished by measuring the vehicle speed comparing it to the desired or reference speed and automatically.

Car cruise control system block diagram.

There are several inputs. The block diagram input is r s which is the lt of r t the command input to the cruise control. This is the block diagram of the hardware for such a system. What remains is to find the closed loop system function h s v s r s.

The transfer function model for the cruise control problem is given below. Design diagram and working explained. Please see the cruise control. M vehicle mass 1000 kg b damping coefficient 50 n s m r reference speed 10 m s.

A pulse is sent for every revolution of the wheel. Automatic cruise control is an excellent example of a feedback control system found in many modern vehicles. 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. τ d4 3e a block diagram of the system is shown in figure 4 2.

The cruise control is a system that is capable of automatically maintaining the desired speed i e. If on denotes that the car engine is turned on. 1 the parameters used in this example are as follows. If on denotes that the cruise control system should maintain the car speed.

The command input represents the user input that is setting the desired vehicle velocity to v0 mph. The cruise control system is only active if the engine is on. Indication of how far the accelerator has been pressed.