**3. Application of the proposed method**

In order to verify the effectiveness of the proposed agile fault diagnosis strategy, the comparative experiments conducted on a semiphysical platform of HST traction system in CRRC Zhuzhou Locomotive Company Ltd. (see [14, 15]), are presented in this section. The fault injection benchmark platform shown in **Figure 3** includes a traction control unit, a dSPACE real-time simulator, a signal conditioner, a power source, a host computer and an operation platform.
