考慮不確定測(cè)量和個(gè)體差異的非線性隨機(jī)退化系統(tǒng)剩余壽命估計(jì)
[Abstract]:The remaining life estimation is the basis of the prediction and health management, which is an effective way to reduce the system running risk and improve the safety and reliability of the system. In view of the large number of non-linear stochastic degradation systems in the engineering practice, the existing method only considers the influence of the individual difference between the measurement or the system on the remaining life, and has not realized the estimation of the remaining life of the measurement and the individual difference. In this paper, a non-linear degradation model based on the diffusion process is firstly established, and the residual life-adaptive estimation of the random degradation system under uncertainty measurement and individual difference is further considered through the established state space model and the Kalman filter. At the same time, the self-adaptive estimation of the drift coefficient is carried out to obtain a more accurate residual life estimate of the non-linear degradation system. Finally, the method is applied to the monitoring data of the fatigue crack and the gyroscope, and the results show that the method is superior to the method of estimating the life span of only the measurement or the individual difference, and has the potential engineering application value.
【作者單位】: 火箭軍工程大學(xué)控制工程系;
【基金】:國(guó)家自然科學(xué)基金(61174030,61374126,61473094,61573365,61573366)資助~~
【分類號(hào)】:O213.2
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