Sökning: "Condition monitoring and control"

Visar resultat 6 - 10 av 59 avhandlingar innehållade orden Condition monitoring and control.

1. 6. On Fault Detection, Diagnosis and Monitoring for Induction Motors

   Författare :Mohammed Obaid Mustafa; Mohamed El Hachemi Benbouzid; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Model based fault detection and diagnosis; Model free fault detection; Set Membership Identification SMI ; Uncertainty Bounds Violation Method; Model based Support Vector Classification; Linear and Nonlinear Classification; Minimum Volume Ellipsoid method; Broken Rotor Bars; Faults of Induction Motors; Three phase induction motor; Reglerteknik; Control Engineering;

   Sammanfattning : In this thesis, multiple methods and different approaches have been established and evaluated successfully, in order to detect and diagnose the faults of induction motors (IMs). The aim of this thesis is to present novel fault detection and isolation methods for the case of induction machines that would have the merit to be implemented online and being characterized by specific novel capabilities, when compared with the existing techniques. LÄS MER

3. 7. Toward Cyber-Secure and Resilient Networked Control Systems

   Författare :André Teixeira; Henrik Sandberg; Karl H. Johansson; Kameshwar Poolla; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Cyber Security; Resilience; Industrial Control Systems; Fault-Tolerant Systems; Risk Management; Cyber säkerhet; Resiliens; Industriella Styrsystem; Riskanalys; Electrical Engineering; Elektro- och systemteknik;

   Sammanfattning : Resilience is the ability to maintain acceptable levels of operation in the presence of abnormal conditions. It is an essential property in industrial control systems, which are the backbone of several critical infrastructures. LÄS MER

4. 8. Condition Monitoring of Control Loops

   Författare :Alexander Horch; KTH; []
   Nyckelord :control performance; performance index; detection; dead-time; diagnosis; static friction; disturbances;

   Sammanfattning : The main concern of this work is the development of methodsfor automatic condition monitoring of control loops withapplication to the process industry. By condition monitoringboth detection and diagnosis of malfunctioning control loops isunderstood, using normal operating data and a minimum amount ofprocess knowledge. LÄS MER

5. 9. On-Line Monitoring Applications in Nuclear Power Plants

   Författare :Hashem Mehrdad Hashemian; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; calibration monitoring; noise analysis; instrumentation and control; sensing line blockages; Nuclear power plants; sensor response time testing; reactor diagnostics; next generation reactors; applied research;

   Sammanfattning : As the current generation of nuclear power plants have passed their mid-life, increased monitoring of their health is critical to their safe operation. This is especially true now that license renewal of nuclear power plants has accelerated, allowing some plants to operate up to 60 years or more. LÄS MER

7. 10. On Degradation and Monitoring Tools for Gas and Steam Turbines

   Författare :Magnus Genrup; Kraftverksteknik; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; applied thermodynamics; Throughflow; Thermal engineering; Monitoring; Gas Turbine; Turbomachinery; termodynamik; Termisk teknik; Deterioration; Steam Turbine;

   Sammanfattning : The revenue from a power plant is strongly dependent on the life cycle cost. Today, when the market conditions for power-producing companies have shifted from a protected market to a deregulated market, the need for tools to monitor power plants has increased significantly. LÄS MER