In the third stage of system development, the engineer combines the real-time control algorithm model that has completed the RCP simulation test with the underlying driving logic for the physical ECU, generates the target language program, and downloads it to the ECU hardware, thereby completing the control logic and the physical ECU. integration work. The ECU products at this stage have been able to meet the basic requirements of users in terms of software and hardware functions. Usually, the manufacturers define the products at this stage as A sample, that is, the basic concept realization sample of the product. The sample at this stage is mainly used for and The user preliminarily confirms the completeness and feasibility of the requirements. Commonly used tools at this stage include TargetLink software from dSPACE, ASCET-SE software from ETAS, target language compiler software for ECU processors, and ECU hardware.