Research On Automobile Door Drive Control System Based On CAN Bus

The automobile electronic technology including modern automobile technology, electronics, and information technology also come into the stage of rapid development, with the rapid development of the automobile electronic technology. The bus-based automobile body control technology is a new development direction of the automobile electronic technology.The thesis lays emphasis on the research about automobile door control system on the base of CAN bus.The thesis explains that bus controller network technology is the development trend and main research direction of automobile electronic technology in the future through introducing the overseas and domestic development conditions of automobile electronic field and bus technology. It depicts the principles of CAN bus and the system bus control structures. It analyzes the automobile network communication control protocol SAE J1939 with CAN bus as its core. It explains the advantage of door control system constituted by CAN bus technology.It introduces the design principle and system structure of the center controller automobile door control system. It depicts the design and development process of the soft and hardware of the center controller automobile door control system. And, it depicts every module's hardware structure such as central processor circuit, CAN module circuit and electrical machinery drive control circuit. Also, it states the software development environment, design principle and development process of control system. It gives the procedure structure of each door unit and software design. It shows the main program of controller, open and close program of central control lock, subprogram of control window electromotor, and the subprogram of rearview mirror, with left-front door controller unit as the example. And it illuminates program and software design of other controller units. And, it gets the feature of automobile window blocking by the analysis and test on the window electrical machinery structure and characteristic. It brings forward new solution on the control strategy of guarding against window blocking to the disadvantage of actual guarding against window blocking measure.Finally, it is the stage of live adjustment and system test. The test result proves that the automobile CAN bus control system works well with excellent function and it can reach the control demand of modern automobile door with the advantage of high reliability, good stability and low price, which has large application foreground.