A Hybrid Method to Predict the Remaining Useful Life of Scroll Wheel of Control Rod Drive Mechanism

Table 2

The estimated values and AIC of different models.

Model form	a; 95% confidence interval	b; 95% confidence interval	c; 95% confidence interval	lnL (θ)	AIC
A + b exp (cx)	−0.06101; (−0.07778, −0.04423)	0.01922; (0.01505, 0.02338)	0.1296; (0.1208, 0.1344)	−21.3897	48.779
[a(1−b)]^1/(1−b)	0.119517; (0.110238, 0.127126)	0.7352; (0.7297, 0.7407)		−21.6626	47.325