相关实验视频
变压器:具有剩余补偿的时间标记变压器,用于工业过程中的质量预测
Qiluo Xiong1, Yanhui Ren1, Fan Yang1
1Department of Automation, Tsinghua University, Beijing 100084, China.
ISA transactions
|November 8, 2025
概括
新的深度学习模型Resformer通过有效地从复杂的过程数据中学习来改进软传感器建模. 这种基于变压器的架构克服了传统自动编码器的局限性,增强了特征提取和模型泛化.
科学领域:
- 化学工程是化学工程的重要组成部分.
- 数据科学数据科学数据科学
- 人工智能的人工智能
背景情况:
- 深度学习,特别是变压器架构,越来越多地用于用于时间序列数据的软传感器建模.
- 自动编码器用于特征提取是常见的,但与多变量数据作斗争,导致不足或过度拟合.
- 现有模型面临的挑战是有效的特征学习和对现实世界软传感器应用的概括.
研究的目的:
- 提出Resformer,一种基于变压器的新型架构,用于增强软传感器建模.
- 解决传统基于自动编码器的模型在处理多变量过程数据方面的局限性.
- 改进软传感器应用中的功能学习和概括能力.
主要方法:
- 开发了Resformer,这是一个具有剩余特征补偿的变压器架构.
- 采用两级自动编码结构用于初级和二级特征提取.
- 利用交叉注意力机制来实现特征融合和时间令牌来捕捉时空依赖.
主要成果:
- 在Tennessee Eastman (TE) 工艺和工业化数据集上,Resformer表现出卓越的性能.
- 该模型在软传感器建模中显著优于最近的基于变压器的变体.
- 实现了具有相似建筑复杂性的有效特征学习和概括.
结论:
- 改造器有效地解决了传统自动编码器模型中的不足和过度装配问题.
- 拟议的架构增强了软传感器的表示完整性和时空特征学习.
- 变压器为工业软传感器应用提供了一种实用且高性能的解决方案.
相关概念视频
Sampling Continuous Time Signal
666
In signal processing, a continuous-time signal can be sampled using an impulse-train sampling technique, followed by the zero-order hold method. Impulse-train sampling involves the use of a periodic impulse train, which consists of a series of delta functions spaced at regular intervals determined by the sampling period. When a continuous-time signal is multiplied by this impulse train, it generates impulses with amplitudes corresponding to the signal's values at the sampling points.
In the...
In the...
666
Improving Translational Accuracy
14.0K
Base complementarity between the three base pairs of mRNA codon and the tRNA anticodon is not a failsafe mechanism. Inaccuracies can range from a single mismatch to no correct base pairing at all. The free energy difference between the correct and nearly correct base pairs can be as small as 3 kcal/ mol. With complementarity being the only proofreading step, the estimated error frequency would be one wrong amino acid in every 100 amino acids incorporated. However, error frequencies observed in...
14.0K
Improving Translational Accuracy
3.5K
3.5K
Energy Losses in Transformers
1.3K
In an ideal transformer, it is assumed that there are no energy losses, and, hence, all the power at the primary winding is transferred to the secondary winding. However, in reality, the transformers always have some energy losses, and, hence, the output power obtained at the secondary winding is less than the input power at the primary winding due to energy losses.
There are four main reasons for energy losses in transformers.
The first cause can be the high resistance of the...
There are four main reasons for energy losses in transformers.
The first cause can be the high resistance of the...
1.3K
Reconstruction of Signal using Interpolation
675
Signal processing techniques are essential for accurately converting continuous signals to digital formats and vice versa. When a continuous signal is sampled with a period T, the resulting sampled signal exhibits replicas of the original spectrum in the frequency domain, spaced at intervals equal to the sampling frequency. To handle this sampled signal, a zero-order hold method can be applied, which creates a piecewise constant signal by retaining each sample's value until the next...
675
Linear Approximation in Time Domain
330
Nonlinear systems often require sophisticated approaches for accurate modeling and analysis, with state-space representation being particularly effective. This method is especially useful for systems where variables and parameters vary with time or operating conditions, such as in a simple pendulum or a translational mechanical system with nonlinear springs.
For a simple pendulum with a mass evenly distributed along its length and the center of mass located at half the pendulum's length,...
For a simple pendulum with a mass evenly distributed along its length and the center of mass located at half the pendulum's length,...
330