在抛物线分布式参数系统中空间时空缺陷和传感器异常的协作诊断
IEEE transactions on cybernetics
|March 13, 2026
概括
这项研究引入了一个新的框架,用于诊断分布式参数系统 (DPS) 的故障. 它有效地检测和隔离时空 (S-T) 故障和传感器异常,确保系统安全.
科学领域:
- 控制系统工程 控制系统工程
- 工业过程监控 工业过程监控
- 错误诊断 错误诊断 在
背景情况:
- 像传热和化学扩散这样的工业过程是复杂的分布式参数系统 (DPS).
- 这些系统表现出强大的时空 (S-T) 合,其中组件故障会带来重大安全风险.
- 现有的诊断方法可能无法充分解决过程故障和传感器异常同时发生的情况.
研究的目的:
- 提出基于模型的框架,用于协作诊断S-T故障和DPS中的传感器异常.
- 为这些复杂的系统开发有效的故障检测和隔离算法.
- 设计一个合作故障估计算法,处理多种故障类型的共存.
主要方法:
- 利用从光谱方法中衍生的减少顺序模型.
- 为过程故障和传感器异常建立两个不同的观察者集.
- 开发基于故障特征的FDI算法,并使用未知输入观察员 (UIO) 进行合作估计.
- 使用利亚普诺夫直接方法确保稳定性和趋同.
主要成果:
- 拟议的FDI算法有效地检测和隔离热传输杆模型中的ST故障和传感器异常.
- 合作故障估计算法显示了高准确度,根平均平方误差 (RMSE) 低于0.31.
- 数字模拟验证了协作诊断框架的稳定性和有效性.
结论:
- 开发的基于模型的框架为DPS的协作故障诊断提供了可靠的解决方案.
- 提出的方法提高了工业过程中的安全性和运行完整性,通过S-T合.
- 这种方法在同时诊断复杂故障和传感器异常方面取得了重大进展.
更多相关视频
06:45Design and Application of a Fault Detection Method Based on Adaptive Filters and Rotational Speed Estimation for an Electro-Hydrostatic Actuator
Published on: October 28, 2022
2.2K
10:52Design, Instrumentation and Usage Protocols for Distributed In Situ Thermal Hot Spots Monitoring in Electric Coils using FBG Sensor Multiplexing
Published on: March 8, 2020
6.2K
相关概念视频
State Space Representation
655
The frequency-domain technique, commonly used in analyzing and designing feedback control systems, is effective for linear, time-invariant systems. However, it falls short when dealing with nonlinear, time-varying, and multiple-input multiple-output systems. The time-domain or state-space approach addresses these limitations by utilizing state variables to construct simultaneous, first-order differential equations, known as state equations, for an nth-order system.
Consider an RLC circuit, a...
Consider an RLC circuit, a...
655
Relative Motion Analysis using Rotating Axes-Problem Solving
814
Consider a crane whose telescopic boom rotates with an angular velocity of 0.04 rad/s and angular acceleration of 0.02 rad/s2. Along with the rotation, the boom also extends linearly with a uniform speed of 5 m/s. The extension of the boom is measured at point D, which is measured with respect to the fixed point C on the other end of the boom. For the given instant, the distance between points C and D is 60 meters.
Here, in order to determine the magnitude of velocity and acceleration for point...
Here, in order to determine the magnitude of velocity and acceleration for point...
814
Linear Approximation in Time Domain
388
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,...
388
Distributed Loads: Problem Solving
1.2K
Beams are structural elements commonly employed in engineering applications requiring different load-carrying capacities. The first step in analyzing a beam under a distributed load is to simplify the problem by dividing the load into smaller regions, which allows one to consider each region separately and calculate the magnitude of the equivalent resultant load acting on each portion of the beam. The magnitude of the equivalent resultant load for each region can be determined by calculating...
1.2K
Three-Dimensional Force System:Problem Solving
1.4K
A three-dimensional force system refers to a scenario in which three forces act simultaneously in three different directions. This type of problem is commonly encountered in physics and engineering, where it is necessary to calculate the resultant force on the system, which can then be used to predict or analyze the behavior of the object or structure under consideration.
To solve a three-dimensional force system, first resolve each force into its respective scalar components. Do this using...
To solve a three-dimensional force system, first resolve each force into its respective scalar components. Do this using...
1.4K
Magnetostatic Boundary Conditions
1.7K
An electric field suffers a discontinuity at a surface charge. Similarly, a magnetic field is discontinuous at a surface current. The perpendicular component of a magnetic field is continuous across the interface of two magnetic mediums. In contrast, its parallel component, perpendicular to the current, is discontinuous by the amount equal to the product of the vacuum permeability and the surface current. Like the scalar potential in electrostatics, the vector potential is also continuous...
1.7K
