及时检测出传感器故障并采取降级运行措施，可保证ＤＥＨ 系统在传感器故障情况下的稳定运行。作者基于调节级压力、功率等信号间存在信息冗余的事实，提出用软件来实现对ＤＥＨ 系统中传感器故障的检测，并给出了两种方法，具有节省投资、硬件结构简单的特点。图３ 表４ 参７ Timely detection of sensor failure and take measures to downgrade operation, DEH system to ensure the stable operation of the sensor failure. Based on the fact that there is information redundancy between signal such as regulation pressure and power, the author proposes to use software to detect sensor failure in DEH system and gives two methods. It has the advantages of saving investment and simple hardware structure. Figure 3 Table 4 Reference 7