“功能安全产品实现技术”系列讲座第10讲实用功能安全设计技术解析

摘要

针对在设计和开发功能安全相关产品中控制失效的要求及标准中推荐的控制失效的技术和措施的建议，详述了控制随机硬件失效中对可变内存RAM进行诊断测试的Galpat测试法和March 测试法，并分析了这两种测试方法可测试的RAM故障类型，以及如何选择可变内存诊断测试方法。最后对控制系统性失效的部分技术措施进行了解析。%In accordance with the requirements of control failure and the recommended control failure techniques and measures in related standards for designing and developing functional safety related products, the Galpat test method and March test method for diagnostic test of variable memory RAM in control of random hardware failure are described in detail. The fault types of RAM that can be tested with these two methods, and how to select the test methods for variable memory diagnosis test are analyzed. Finally, some of the technical solutions for controlling systematic failures are resolved.