Automotive electronic control system is becoming more and more advanced and complex. The traditional manual programming development mode to realize automotive electronic control system can't satisfy the development needs. Combining model- based design approach with auto code generation technology, this paper proposed a new design method of automotive electronic control system based on Simulink/RTW. Fristly. design algorithms, establish system model and made simulation testing and verification. Then generate embedded code automatically by RTW to achieve automotive real-time control system development. And this method was applied on the development of engine control system and confirmed that it was feasible and accurate through comparing the simulation results with Simulink. The experimental result proved that the new development mode significantly can shorten the development cycle of automotive electronic control system and have certain practical value for the development of embedded control system.%随着汽车电子控制系统的日益先进和复杂化,传统的手工编写代码实现汽车电控系统的开发模式已不能满足开发需要;结合基于模型的设计方法和代码生成技术,提出了一种基于Simulink/RTW的汽车电子实时控制系统的新型设计方法;利用Simulink进行算法开发、系统建模和仿真验证,然后通过RTW自动生成嵌入式代码,实现汽车电子实时控制系统的开发;并将该设计方法应用到发动机控制系统的开发过程中,通过与Simulink中仿真结果进行对比,验证了该方法的可行性与正确性;经过实践证明这种薪型设计方法可以大大缩短控制系统的开发周期,对于嵌入式控制系统的开发具有一定的实用价值.
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