Observer-biased bearing condition monitoring: From fault detection to multi-fault classification

Nonlinear observer-based fault detection

This communication deals with t h e problem of designing a nonlinear observer i n order to achieve fault detection and l o c a l i z a t i o n for a wide class of nonlinear systems subjected to bounded nonlinearities. A dedicated non l inear observer scheme (DNOS) for fault detection and identification in reconstructible systems i s p r o p o s e d .

Online Nonintrusive Condition Monitoring and Fault Detection for Wind Turbines

Condition Monitoring and Fault Detection of Electric Drives

An electric drive consists of an electric machine, which converts electrical power to mechanical power, power electronics to operate the machine and a unit to control the motion of the drive. These are the components of the drive. Parts of each of these components could fail and give rise to specific failure scenarios. The drive types investigated in this chapter are limited to asynchronous ind...

Condition Monitoring of Fault Diagnosis under Lubrication Condition in Ball Bearing using Infrared Thermography

In this paper, the novel approach for the rotating machine as diagnosis method in detecting the faults during its operation was proposed based upon the infrared thermograph technique. As experimental works, by performing the test of operation at several lubrication conditions for the ball bearing applied in the rotating machine which there has been used broadly, diagnosis evaluation and fault a...

Zonotopic Fault Detection Observer with H− Performance

This paper proposes a robust fault detection observer based on zonotopes for discrete-time uncertain systems with sensor faults and unknown but bounded uncertainties. The main advantage of this method is that the observer gain of the robust zonotopic observer is designed to be robust against bounded uncertainties while being sensitive to faults. In order to detect sensor faults with low magnitu...