A Distributed Fault Diagnosis and Cooperative Fault-Tolerant Control Design Framework for Distributed Interconnected
Xue Li1, Zhikang Fan1, Shengfeng Wang1
1School of Electrical Engineering, Nantong University, Nantong 226019, China.
Sensors (Basel, Switzerland)
|April 12, 2022
Summary
This study presents a fault diagnosis and cooperative fault-tolerant control framework for distributed systems. The method ensures system stability through adaptive fault estimation and compensation, validated in intelligent vehicle platoons.
Area of Science:
- Control Engineering
- Systems Science
- Artificial Intelligence
Background:
- Distributed interconnected systems are susceptible to component failures, compromising overall performance and safety.
- Existing fault-tolerant control strategies often lack robustness or efficient fault localization in complex networks.
Purpose of the Study:
- To develop a unified design framework for fault diagnosis and cooperative fault-tolerant control in distributed interconnected systems.
- To enhance system resilience and maintain stability despite component faults.
Main Methods:
- Design of fault detection and isolation observers for subsystems.
- Utilization of adaptive fault estimation techniques for accurate fault localization.
- Implementation of a cooperative fault-tolerant control unit with state feedback and compensation.
Main Results:
- Successful detection and isolation of faults in interconnected subsystems.
- Demonstrated compensation of residuals using fault estimation information.
- Preservation of overall system stability through the cooperative fault-tolerant control strategy.
Conclusions:
- The proposed framework effectively integrates fault diagnosis and fault-tolerant control for distributed systems.
- The adaptive fault estimation and cooperative control approach ensures system robustness and stability.
- The framework's applicability is validated through simulations of intelligent unmanned vehicle platooning.
Keywords:
cooperative fault-tolerant controldistributed fault diagnosisdistributed interconnected systemsfault isolationMore Related Videos
06:04Experimental Investigation of the Hierarchical Control in DC Microgrids Using a Real-time Simulator
Published on: February 14, 2025
638
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
6.0K
Related Concept Videos
01:21Distributed Loads: Problem Solving
760
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...
760
01:25Distribution Reliability and Automation
169
Distribution reliability in electrical power systems is critical for ensuring an uninterrupted power supply to consumers at minimal cost. According to IEEE Standard Terms, reliability is the probability that a device will function without failure over a specified time period or amount of usage. For electric power distribution, this translates to maintaining continuous power supply and addressing customer concerns over power outages. Several indices, as defined by IEEE Standard 1366-2012, are...
169
01:10Control Systems
1.5K
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...
1.5K
01:18Fault Types
132
When analyzing a single line-to-ground fault from phase A to ground at a three-phase bus, it is important to consider the fault impedance. This impedance is zero for a bolted fault, equal to the arc impedance for an arcing fault, and represents the total fault impedance for a transmission-line insulator flashover. To derive sequence and phase currents, fault conditions are translated from the phase domain to the sequence domain.
For line-to-line faults occurring between phases B and C, the...
For line-to-line faults occurring between phases B and C, the...
132
01:07Time-Domain Interpretation of PD Control
189
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...
189
01:27Line Protection with Impedance Relays
139
Coordinating time-delay overcurrent relays in complex radial systems and directional overcurrent relays in multi-source transmission loops can be challenging. Impedance relays address these issues by responding to the voltage-to-current ratio, specifically measuring the apparent impedance of a line. These relays become more sensitive during faults as current increases and voltage decreases, thereby reducing the apparent impedance.
Under normal conditions, low load currents keep the measured...
Under normal conditions, low load currents keep the measured...
139