深度学习和随机过程模型之间的交互式预测框架,用于剩余的有用生命预测
IEEE transactions on neural networks and learning systems
|September 19, 2023
概括
本研究引入了用于剩余使用寿命 (RUL) 预测的交互式预测框架,通过将深度学习健康指标与随机降解模型集成来提高准确性. 该方法使用大数据改善了使用大数据对退化系统的RUL预测.
科学领域:
- 可靠性工程可靠性工程
- 机器学习 机器学习
- 数据科学数据科学数据科学
背景情况:
- 准确的剩余使用寿命 (RUL) 预测对于退化系统至关重要,特别是在大数据时代.
- 现有的方法经常受到基于深度学习的健康指标 (HI) 构建和随机降解建模之间的不匹配的影响.
- 这种缺陷显著影响了RUL预测的准确性.
研究的目的:
- 提出一个交互式预测框架,弥合深度学习和随机过程模型之间的差距,用于RUL预测.
- 通过解决传统方法中的匹配缺陷来提高RUL预测的准确性.
主要方法:
- 通过合并多传感器数据,利用堆叠的收缩自编码器进行无监督健康指标 (HI) 构建.
- 引入了一个指数式的降解模型,以捕捉构建的HI的非线性特征.
- 使用第一个撞击时间概念来预测结果的理论表达式,并通过梯度下降优化了一个集成的目标函数.
主要成果:
- 拟议的交互式预测框架成功地整合了HI结构和降解建模.
- 该方法为现场系统生成HI,并提供预测RUL的概率密度函数 (pdf).
- 通过对轮风扇发动机的两个案例研究进行验证,证明了拟议方法的有效性和优越性.
结论:
- 交互式预后框架通过克服HI降解模型匹配缺陷,为RUL预测提供了强大的解决方案.
- 该方法为退化系统提供了准确的RUL预测和不确定性量化.
- 这种方法在预测性维护和系统健康管理中具有很大的应用潜力.
更多相关视频
07:15Machine Learning Algorithms for Early Detection of Bone Metastases in an Experimental Rat Model
Published on: August 16, 2020
6.8K
04:09Predicting Treatment Response to Image-Guided Therapies Using Machine Learning: An Example for Trans-Arterial Treatment of Hepatocellular Carcinoma
Published on: October 10, 2018
8.3K
相关概念视频
Prediction Intervals
2.3K
The interval estimate of any variable is known as the prediction interval. It helps decide if a point estimate is dependable.
However, the point estimate is most likely not the exact value of the population parameter, but close to it. After calculating point estimates, we construct interval estimates, called confidence intervals or prediction intervals. This prediction interval comprises a range of values unlike the point estimate and is a better predictor of the observed sample value, y.
However, the point estimate is most likely not the exact value of the population parameter, but close to it. After calculating point estimates, we construct interval estimates, called confidence intervals or prediction intervals. This prediction interval comprises a range of values unlike the point estimate and is a better predictor of the observed sample value, y.
2.3K
End Point Prediction: Gran Plot
371
A Gran plot is used to predict the equivalence volume or endpoint of a potentiometric or acid-base titration without reaching the endpoint. Typically, titration data is collected as a function of the titrant's volume up to a point less than the equivalence volume and then transformed into a linear format. The straight line is extended to the x-axis, indicating the necessary titrant volume to achieve the equivalence point.
For potentiometric titration, the Gran plot is created by plotting...
For potentiometric titration, the Gran plot is created by plotting...
371
Model Approaches for Pharmacokinetic Data: Distributed Parameter Models
96
Pharmacokinetic models are mathematical constructs that represent and predict the time course of drug concentrations in the body, providing meaningful pharmacokinetic parameters. These models are categorized into compartment, physiological, and distributed parameter models.
The distributed parameter models are specifically designed to account for variations and differences in some drug classes. This model is particularly useful for assessing regional concentrations of anticancer or...
The distributed parameter models are specifically designed to account for variations and differences in some drug classes. This model is particularly useful for assessing regional concentrations of anticancer or...
96
Assumptions of Survival Analysis
153
Survival models analyze the time until one or more events occur, such as death in biological organisms or failure in mechanical systems. These models are widely used across fields like medicine, biology, engineering, and public health to study time-to-event phenomena. To ensure accurate results, survival analysis relies on key assumptions and careful study design.
153
Cancer Survival Analysis
381
Cancer survival analysis focuses on quantifying and interpreting the time from a key starting point, such as diagnosis or the initiation of treatment, to a specific endpoint, such as remission or death. This analysis provides critical insights into treatment effectiveness and factors that influence patient outcomes, helping to shape clinical decisions and guide prognostic evaluations. A cornerstone of oncology research, survival analysis tackles the challenges of skewed, non-normally...
381
Multi-input and Multi-variable systems
127
Cruise control systems in cars are designed as multi-input systems to maintain a driver's desired speed while compensating for external disturbances such as changes in terrain. The block diagram for a cruise control system typically includes two main inputs: the desired speed set by the driver and any external disturbances, such as the incline of the road. By adjusting the engine throttle, the system maintains the vehicle's speed as close to the desired value as possible.
In the absence...
In the absence...
127
