Car Cruise Control System Block Diagram

The block diagram input is r s which is the lt of r t the command input to the cruise control.

Car cruise control system block diagram.

If on denotes that the cruise control system should maintain the car speed. 1 the parameters used in this example are as follows. Design diagram and working explained. Automatic cruise control is an excellent example of a feedback control system found in many modern vehicles.

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. There are several inputs. If on denotes that the car engine is turned on.

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

System model and parameters. The cruise control is a system that is capable of automatically maintaining the desired speed i e. 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. This is the block diagram of the hardware for such a system.

System modeling page for the derivation. The cruise control system is only active if the engine is on. Indication of how far the accelerator has been pressed.