对于复杂系统的基于深信规则的故障诊断方法.
BoYing Zhao1, QingXi Zhang1, Wei He1
1Harbin Normal University, Harbin 150025, China.
ISA transactions
|May 22, 2024
概括
本研究引入了深度信念规则基础 (DBRB) 来解决复杂的系统故障诊断. DBRB有效地减少了参数,提高了分类性能,解决了组合式爆炸.
科学领域:
- 工程 工程师 工程师 工程师
- 计算机科学 计算机科学
背景情况:
- 由于复杂的结构和组件相互依存,复杂的系统面临稳定性问题.
- 故障诊断对于保持这些系统的运行稳定性至关重要.
- 传统信念规则基础 (BRB) 模型中的组合式爆炸问题阻碍了它们的效率.
研究的目的:
- 提出一个改进的信念规则网络结构,深度信念规则基础 (DBRB),以解决组合式爆炸问题.
- 提高复杂系统故障诊断的效率和性能.
- 改进故障诊断模型的逻辑和可读性.
主要方法:
- 采用极端梯度提升 (XGBoost) 进行特征选择以识别重要变量.
- 通过在不同层次输入功能,开发了一个渐进的网络结构.
- 为DBRB模型实施了一个推理和优化过程.
主要成果:
- 根据DBRB模型,随着网络深度的增加,分类性能不断提高.
- 与传统的BRB模型相比,显著减少了参数数量.
- 有效地捕获各种故障特征,增强模型逻辑和可读性.
结论:
- 拟议的DBRB方法有效地解决了复杂系统故障诊断中的组合式爆炸.
- 与传统的BRB模型相比,DBRB提供了更好的效率和分类性能.
- 这种方法为诊断复杂系统中的故障提供了一个新的视角.
相关概念视频
Classification of Systems-I
180
Linearity is a system property characterized by a direct input-output relationship, combining homogeneity and additivity.
Homogeneity dictates that if an input x(t) is multiplied by a constant c, the output y(t) is multiplied by the same constant. Mathematically, this is expressed as:
Homogeneity dictates that if an input x(t) is multiplied by a constant c, the output y(t) is multiplied by the same constant. Mathematically, this is expressed as:
180
Multi-input and Multi-variable systems
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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...
106
Classification of Systems-II
140
Continuous-time systems have continuous input and output signals, with time measured continuously. These systems are generally defined by differential or algebraic equations. For instance, in an RC circuit, the relationship between input and output voltage is expressed through a differential equation derived from Ohm's law and the capacitor relation,
140
Mason's Rule
314
Mason's rule is a powerful tool in control systems and signal processing. It simplifies the calculation of transfer functions from signal-flow graphs. This method leverages various elements, including loop gains, forward-path gains, and non-touching loops, to determine the transfer function efficiently.
Loop gain is determined by identifying and tracing a path from a node back to itself. This involves computing the product of branch gains along the loop. Each loop's gain is crucial for...
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314
Block Diagram Reduction
202
The process of deriving the transfer function of a control system often involves reducing its block diagram to a single block. This simplification can be achieved through a series of strategic operations, including relocating branch points and comparators. These operations preserve the overall function of the system while allowing for easier manipulation and combination of blocks.
The first step in this process is the identification and relocation of a branch point. A branch point, where a...
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Elements of Block Diagrams
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Block diagrams serve as a visual representation of the input-output relationships within a system. An illustrative example is a heating system, where the set temperature activates the furnace to warm the room to the desired level. Block diagrams are versatile, modeling linear systems through Laplace transform variables and nonlinear systems using time domain variables.
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273


