The Research Of Distributed Control Technology Of Electric Throttle Of Engine Based On CAN Bus

More and more research organizations and factories of automobile have began to study the electronic throttle technology since the middle of the eighties of the twentieth century, and there have been many mature products in various luxurious cars. Because the electronic throttle technology can improve the fuel economy of automobile and reduce the automobile emission of vent gas and Hybrid Electric Vehicle( HEV) appears, its application prospect will be more and more extensive. Based on the foundation of forefathers research, this paper suggests the distribution control method of electronic throttle based on Controller Area Network (CAN).The major working contents are as follows.1) It elaborates the development of automobile electronic technology and the present situation of engine electronic-controlled technology, and analyses the domestic and international research present situation of electronic throttle technology in detail and expounds the advantages of electronic throttle control technology.2) It analyses the structural and control principle of electronic throttle, and makes a comparison with the tradition mechanical throttle.3) Brought forward a new integrative control system for electronic throttle with idle speed control, cruising control and well-balanced work-condition control of engine, and control strategy based on curve of optimum fuel economy and power, utilize PID and Fuzzy control algorithm on system respectively. A model established in MATLAB analyzes these algorithms contrastively. The results of simulation indicate the effect of PID is better than Fuzzy. The curve of engine's speed changes gently and there is no burr.4) The working theory and merit of distributed control systems are displayed in the paper. The DSP chip and P87C592 single chip are detailedly introduced. The software and hardware of the distributed control systems is composed of these chip are designed and the anti-disturbed performance of the system are also designed.5) The expected demand is arrived through the results of the like -...