The Development And Study Of Upper Computer Of The AMT Calibration System

To modern automobile, comfort,efficiency and security depended on various electronic control systems(ECU), and the development of the ECU included the development of hardware,the development of software and the calibration between ECU and the controlled device. The software of ECU included program and calibration parameter. Calibration is a procedure to adjust and optimize the calibration parameters depending on different performance requirements. Calibration system is a tool for calibration, and it is a direct means for the intercommunion between operator and computer. A perfect and convenience calibration system can get twice the result with half the effort to the development of the ECU.Electronic and Automated Manual Transmissions (AMT) is attached importance by scholars and corporations for its strongpoints of efficient transmission,compact organization,credibility and low cost of manufacture. The development of the AMT-ECU is one of a integrant tache for the development of the AMT and the calibration of the parameter is important to the performance of the ECU. Without fail, Developing a calibration system have a high practicality.The development of the calibration system included calibration flatform and communication module. The organization is showed as the following graphic. measurement communication modulecalibration data upper data communication communication interface AMTECUThe calibration flatform included device management module,page layout management module,calibration management module and measurement management module.Device management module takes charge of the management of the controlled device, including the configuration of the attribute for device, edition of the database corresponding to the device and the management of the variable data in database.Page layout management module take charge of the management of the environment of calibration and measurement, including establishing new page, the configuration of measurement, establishing measurement and calibration windows, displaying and editing variable data in the calibration window, loading page and saving current page.Calibration management module take charge of the management of the calibration task, including building or cutting the connection between ECU and PC, downing and loading variable data and saving the variable data to calibration data file on the disk or getting the variable data from calibration data file.Measurement management module take charge of the management of measurement task, including starting or stopping the transmission of measurement variable data, starting or pausing the display of the received measurement variable data in measurement windows, offline analyse of the historical measurement data and saving the measurement variable data to measurement data file on the disk.The calibration flatform have a master windows with many calibration or measurement child windows. Calibration and measurement child windows included measurement graphic window, measurement digital window, calibration parameter table window, curve table window, curve graphic window, MAP graph table window and MAP graph graphic window. The operator perform the displaying and edit operation in various child windows. Depending on the curve graphic window and MAP graph graphic window, we can display the 2-D curve data and 3-D MAP graph data in graphic mode, and edit the data via dragging the mouse. To display the curve or MAP graph data in graphic mode, we must transmit the disperse data point to interposed value curve or graph via interposed value arithmetic. In this system, we embedded the MATLAB DLL and called the curve or graphic interposed value function to get the interposed value curve or graph.Currency and agility are two important target to evaluate the ECU calibration flatform. To an ECU in developing, the developer mend the control strategy uni...