Rapid prototyping technology based on XCP

LIANG Heng，ZHOU Wen-hua，ZHAO Jun-peng

（Department of Energy Engineering，Zhejiang University，Hangzhou 310027，China）

Abstract：Aiming at accelerating the development process of ECU control algorithm，and shortening the development cycle，a low cost way of rapid prototyping technology based on XCP on CAN was proposed. The function module to be tested was generated to dll files by matlab，and then the calibration tool load the dll file directly in order to call the control algorithm. In the process of test，the program flow was changed based on the software hook values which was added to the original code. The communication between the ECU and the RCP

system was realized by making use of synchronous data acquisition（DAQ）and synchronous data stimulation（STIM）in the XCP. This idea was tested on the development of high pressure common rail system. The results indicate that the latency times between 0.6 and 1 milliseconds can be achieved with greater than 98.8% reliability in the 140 000 test cycles. The data transmission rates of the synchronous data transfer model is fast enough to meet the needs of data synchronization between the ECU and the prototype。