近年来，世界各大汽车公司和厂家都十分重视先进的电子技术在汽车领域里的应用，形成了一股汽车电子化的热潮，其表现为：在汽车的设计、制造。试验等过程中普遍采用CAD／CAM（计算机辅助设计／计算机辅助制造）技术，从而大大缩短了新产品的研制周期，降低了成本，提高了生产 In recent years, the world’s major auto companies and manufacturers attach great importance to the application of advanced electronic technology in the automotive field, forming a wave of automotive electronics, its performance: in the car design, manufacture. Testing and other processes commonly used CAD / CAM (Computer Aided Design / Computer-aided manufacturing) technology, which greatly shortened the development cycle of new products, reduce costs and increase production