A Prognostic Framework For Electromagnetic Relay Contacts



Andrew J Wileman Suresh Perinpanayagam


Electromagnetic relays provide a well proven solution to switching loads in a variety of applications. However, relays are known for their limited reliability due to mechanical wear of internal switching elements, essentially the life of the relay may be determined by the life of the contacts. Failure to trip, spurious tripping and contact welding, can in critical applications such as control systems in avionics and signaling for rail networks, cause significant costs due to downtime as well as safety implications. Prognostics provides a way to assess the remaining useful life of an electromagnetic relay based on its current state of health.
In this paper, the cause of failure and degradation for electromagnetic relays used in avionic power controllers are examined. A first principle model of an electromagnetic relay, including contact wear is proposed. The degradation observations and measurements form the basis for developing a model based remaining useful life prediction algorithm. Our overall aim is to derive a simple but accurate model of the relays contact degradation, and provide prediction of performance changes within the component.

How to Cite

Wileman, A. J., & Perinpanayagam, S. (2014). A Prognostic Framework For Electromagnetic Relay Contacts. PHM Society European Conference, 2(1). https://doi.org/10.36001/phme.2014.v2i1.1531
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Electronic PHM, IVHM, Relays

Feng, Y., Lul, J., Zheng, J., Huang, Z. (2006). Research on the Failure Diagnostics Parameters and the Reliability Prediction Model of the Electrical Contacts. Electrical contacts - 2006, proceedings of the fifty-second IEEE Holm Conference on Electrical Contacts, pages 69-72.
Qiong, Y., Xuerong, Y,. Guofu, Z. (2010). Reliability Assessment for Electromagnetic Relay Based on Time Parameters Degradation, 11th International Conference on Electronic Packaging Technology & High Density Packaging (ICEPT-HDP), pages 1269 - 1272
Yu, Q., Qi M., Wang, S., Zhai, G. (2009). Research on Life Prediction Based on Wavelet,Transform and ARMA Model for Space Relay, 4th IEEE Conference on Industrial Electronics and Applications.
Xuerong,Y., Yue, M., Hang, M., Guofu, Z. (2012). Degradation Failure Model of Electromagnetic Relay, 26th International Conference on Electrical Contacts, pages 116 – 123.
Fang Y., Zhigang, L., Yachao,W., Cuiping, Y. (2012). Research on Uncertainty of Bounce Time for Electromagnetic Relay and Its Application in Operating Reliability Estimation, 26th International Conference on Electrical Contacts, pages 200-204
Fujitsu Components Engineering Reference: Relays 2009 Fujitsu Components America
Holm, R. (1967). Electrical Contacts, NewYork, Springer-Verlag.
Braunovic,M., Myshkin, N., & Konchits,V. (2006). Electrical Contacts: Fundamentals, Applications, CRC Press
Weißenfels, C., & Wriggers, P. (2010). Numerical modeling of Electrical Contacts, Computational Mechanics, Volume 46, Issue 2 , pp 301-31
Grewal, M, & Andrews A. (2008). Kalman Filtering: Theory and Practice Using MATLAB, Wiley-Blackwell
Technical Papers