Abstract：The mechanical properties status of vacuum circuit breakers was usually evaluated by single sensor signal. To solve this problem, an evaluation method was proposed in this paper. This method used D-S evidence theory to combine multi sensor signals. Firstly, we got operating parameters which were measured by the displacement sensor. Then we calculated basic belief assignment of mechanical properties according to fuzzy comprehensive evaluation method. Secondly, we used acceleration sensor to monitor vibration signals. According to the method of wavelet packet-energy spectrum, vibration signals were decomposed and extracted characteristic values. Then based on the similarity principle, the characteristic values were used to determine basic belief assignment of mechanical properties status. Finally, the two basic belief assignments are fused according to D-S evidence theory. And the final fusion evaluation results are obtained. The test results showed the method was correct and effective.
周阳, 王宝华. 基于多传感器信号融合的真空断路器机械特性状态评价[J]. 电气技术, 2016, 17(6): 30-25.
Zhou Yang, Wang Baohua. Mechanical Characteristic State Evaluation of Vacuum Circuit Breaker based on Multi-sensor Signal Fusion. Electrical Engineering, 2016, 17(6): 30-25.
2016, Vol. 17 
