DSP-based Intelligent Full-speed-range Adaptive Cruise Control Design

• Main Authors: Chia-Hsien Yen, 顏嘉賢
• Other Authors: Bing-Fei Wu
• Format: Others
• Language: en_US
• Published: 2007
• Online Access: http://ndltd.ncl.edu.tw/handle/24497503868998413697

碩士 === 國立交通大學 === 電機與控制工程系所 === 95 === Adaptive Cruise Control (ACC) nowadays is a well-developed technology in the field of the Advanced Vehicle Control and Safety System (AVCSS) in Intelligent Transportation Systems (ITS). However, one limitation of conventional ACC systems is that they do not manage speeds under 40 km/h and, as a result, are not useful in traffic jams or urban driving situation. Therefore, the target of this thesis is to design an intelligent ACC system of a full-speed-range longitudinal motion control. In this thesis, we present the integration design and implementation of an intelligent full-speed-range ACC (IF-ACC) system. The proposed system has a hierarchical structure composed and consists of a supervisory control and a regulation control. The main feature of this thesis is that there is adaptation to a user-preset speed and, if necessary, speed reduction to keep a safe distance from the vehicle in the same lane, whatever the speed. The extreme case is the stop and go operation in which the lead car stops and the vehicle embedded this system must also do so. As the cost, performance and design complexity taken into account, the current trend is that digital signal processors (DSP) are widely applied on Automotive Electronics industry. Therefore, instead of car computer, the IF-ACC system is implemented on a DSP　as an embedded controller. Among on-road experimental tests, we verify our control rules on car computer can be implemented on a DSP, and the system validness is exhibited.