1. Liu, Z.: Research on life state evaluation of AC contactor based on data drive. Shenyang University of Technology (2019). (in Chinese)
2. Wang, J., Wang, Z., Huang, Z., et al.: Electric appliance and energy efficiency management technology, (04), 1–5 (2018). (in Chinese)
3. Shen, P.: Research on multi-parameter performance degradation and life prediction of railway signal relay. Hebei University of Technology (2016). (in Chinese)
4. Li, W., Zhou, L., Wang, L., Cai, Y., et al.: Neural network prediction of relay storage life based on statistical analysis. Aerosp. Control 34(06), 79–84 (2016). (in Chinese)
5. Dong, S., Wu, W., He, K., Pan, X.: Research on bearing life state identification method based on performance degradation evaluation. J. Vibr. Shock 40(05), 186–192. (in Chinese)