Vehicle Cruise Control

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------------------------------------------------- Vehicle CRUISE CONTRol Proposed Project Report ------------------------------------------------- Vehicle CRUISE CONTRol Proposed Project Report EEE 342 Control Engineering EEE 342 Control Engineering Prepared for: Lamia Iftekhar Group Name: Night Riders Riders: Rakibul Huda Adnan 093 0549 043 Nayan Chowdhury 081 515 045 Prepared for: Lamia Iftekhar Group Name: Night Riders Riders: Rakibul Huda Adnan 093 0549 043 Nayan Chowdhury 081 515 045 Purpose Vehicle Cruise Control system is to maintain a constant vehicle speed despite external disturbances, such as changes in wind or road grade. Following points are some real life advantages of this sort of system: * Its usefulness is for long drives (reducing driver fatigue, improving comfort by allowing positioning changes more safely) across highways and sparsely populated roads. This usually results in better fuel efficiency. * Some drivers use it to avoid unconsciously violating speed limits. A driver who otherwise tends to unconsciously increase speed over the course of a highway journey may avoid a speeding ticket. Such drivers should note, however, that a cruise control may go over its setting on a downhill which is steep enough to accelerate with an idling engine. Since this system is accomplished by measuring the vehicle speed, comparing it to the desired or reference speed, and automatically adjusting the throttle according to a control law. Physical Setup This is an excellent example of a feedback control system found in many modern vehicles. Our system will be relatively a Simple Cruise Control System. For a simplified model we will assume that we can control the Engine force directly and we will neglect the dynamics of the powertrain, tires, etc., that go into generating the force. The Resistive forces, due to

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