基于模糊神经网络的坚固模型,无缺陷的适应性故障耐受性控制,用于废水处理过程
IEEE transactions on cybernetics
|August 4, 2025
概括
一个新的强大的无模型耐故障控制器 (RMFFTC) 能够有效地检测和估计废水处理中的溶氧传感器故障. 该控制器确保稳定的通风,并防止膜生物反应器模型中的膜污染.
科学领域:
- 环境工程 环境工程
- 控制系统工程 控制系统工程
- 化学工程是化学工程的重要组成部分.
背景情况:
- 废水处理厂 (WWTP) 的溶氧度 (DOC) 传感器故障导致控制信号不正确,影响通风并增加膜污染风险.
- 现有的控制系统与不准确的传感器数据作斗争,损害了处理效率和操作稳定性.
研究的目的:
- 设计一个强大的无模型耐故障控制器 (RMFFTC),用于解决WWTP中的溶氧传感器故障.
- 为了确保稳定的溶氧跟踪和可靠的吹风机运行,尽管传感器的不准确性.
主要方法:
- 利用伪部分导数 (PPD) 方法对非线性WWTP动态线性化进行紧形式动态线性化 (CFDL) 模型.
- 实现了一个扩展状态观察器 (ESO) 用于故障检测 (FD) 门设计和一个模糊的神经网络 (FNN) 用于故障估计 (FE).
- 开发了一个改进的RMFFTC,考虑输出跟踪错误变化,以提高传感器故障下的稳定性.
主要成果:
- 成功检测并估计未知溶解氧传感器故障使用拟议的ESO和FNN.
- 在模拟膜生物反应器 (MBR) 模型中,RMFFTC证明了稳定的溶氧跟踪和有效的控制.
- 有限输入-有限输出 (BIBO) 的稳定性在理论上是RMFFTC的保证.
结论:
- 开发的RMFFTC为WWTP中的溶氧传感器故障耐受性提供了强大的和有效的解决方案.
- 该方法增强了通风控制,减轻了膜污染风险,并确保了膜生物反应器的稳定运行.
- 这种耐故障控制策略为提高废水处理过程的可靠性和效率提供了显著的潜力.
相关概念视频
Control Systems
1.4K
Control systems are everywhere in contemporary society, influencing diverse applications from aerospace to automated manufacturing. These systems can be found naturally within biological processes, such as blood sugar regulation and heart rate adjustment in response to stress, as well as in man-made systems like elevators and automated vehicles. A control system is essentially a network of subsystems and processes that collaboratively convert specific inputs into desired outputs.
At the heart...
At the heart...
1.4K
Feedback control systems
427
Feedback control systems are categorized in various ways based on their design, analysis, and signal types.
Linear feedback systems are theoretical models that simplify analysis and design. These systems operate under the principle that their output is directly proportional to their input within certain ranges. For instance, an amplifier in a control system behaves linearly as long as the input signal remains within a specific range. However, most physical systems exhibit inherent nonlinearity...
Linear feedback systems are theoretical models that simplify analysis and design. These systems operate under the principle that their output is directly proportional to their input within certain ranges. For instance, an amplifier in a control system behaves linearly as long as the input signal remains within a specific range. However, most physical systems exhibit inherent nonlinearity...
427
Time-Domain Interpretation of PD Control
178
Proportional-Derivative (PD) control is a widely used control method in various engineering systems to enhance stability and performance. In a system with only proportional control, common issues include high maximum overshoot and oscillation, observed in both the error signal and its rate of change. This behavior can be divided into three distinct phases: initial overshoot, subsequent undershoot, and gradual stabilization.
Consider the example of control of motor torque. Initially, a positive...
Consider the example of control of motor torque. Initially, a positive...
178
Load-frequency control
259
Load-frequency control (LFC) is vital for maintaining power system stability, ensuring that frequency and power flows remain within acceptable limits during load changes. Turbine-governor control eliminates rotor accelerations and decelerations following load changes. However, a steady-state frequency error persists when the change in the turbine-governor reference setting is zero. In an interconnected power system, each area agrees to export or import a scheduled amount of power through...
259
Open and closed-loop control systems
999
Control systems are foundational elements in automation and engineering. They are broadly categorized into open-loop and closed-loop systems. These classifications hinge on the presence or absence of feedback mechanisms, significantly influencing the system's performance, complexity, and application.
An open-loop control system operates without feedback from the output. It consists of two primary elements: the controller and the controlled process. The controller receives an input signal...
An open-loop control system operates without feedback from the output. It consists of two primary elements: the controller and the controlled process. The controller receives an input signal...
999
Typical Model Studies
441
Fluid mechanics model studies often utilize scaled-down systems to predict fluid behavior in full-scale environments, such as river flows, dam spillways, and structures interacting with open surfaces. Maintaining Froude number similarity in river models is crucial, as it replicates surface flow features like wave patterns and velocities.
441


