Research on Power Supply Performance Degradation Based on Neighborhood Rough Set and Multiple Linear Regression
Qinglan Li, Yongle Lv, Zhou Chuang, Hao Qu · 2019
Aiming at the health monitoring of radar transmitting power supply, a new method of equipment performance degradation based on neighborhood rough set and multiple linear regression was proposed. Firstly, circuit modeling and fault simulation injection are adopted to obtain characteristic parameters such as peak value, mean value and frequency of voltage at monitoring points related to power supply. Secondly, based on the multivariate linear regression analysis method under the simulation conditions, the relationship model between the "threshold voltage of MOSFET" and the reduced characteristic parameters of the key performance indicators of the power supply was established. The model could be used to quantify the degree of degradation of power supply performance, and time series analysis method was used for predictive analysis. Finally, the simulation and analysis of the radar transmitting power source were used to prove the effectiveness of the method.