<span>The main aim of this work is to analyze the input current waveform for a single-phase induction capacitor-run motor (SIMCR) detect faults. Internal and external faults were applied SIMCR was measured. An armature (broken rotor bar) bearing SIMCR. A microcontroller used record signal MATLAB software it with different types fault varying load operations. Various values running capacit...

This paper discusses a novel method for motor fault detection under varying load conditions. Winding Function Approach (WFA) is used to develop a mathematical model to provide indication references for parameters under different load levels and different fault situations. Broken bar defects reference indexes are developed to assess rotor fault severity based on stator current and rotor speed. S...

In this article the immunity of ElGamal and related signature schemes against fault cryptanalysis (FA) is examined. Although such schemes have been widely adopted, their resistance against fault cryptanalysis has not been verified in detail. Majority of those schemes are not immune to fault cryptanalysis and can be broken without solving discrete logarithm problem. It will be proved that the se...

This paper inspects the misaligned motors by using diagnostic medium such as current, flux and instantaneous power signal. Misalignments in machines can cause decrease in efficiency and in the long-run it may cause disastrous failure because of unnecessary vibration, stress on motor & bearings and short-circuiting in stator and rotor windings. The measurements have been performed at full-load t...

-This paper develops a novel spectrum enhancement method to simplify the spectrum representation. It uses a forward synchronous transform to convert three phase current signals into the two current signals in the synchronous reference frame. The spectrum obtained by applying Fast Fourier Transform (FFT) to one of the transformed current signals is then maximized by varying the initial phase in ...

The die cast rotor bars in production squirrel cage induction motors (SCIMs) are easily subjected to porosity or other defects production, which considerably affects the motors’ reliability and efficiency operation. Planar flux sensing coils have been investigated for defect detection of SCIM rotor. However, these types sensors cannot accurately evaluate severity broken bar. This article develo...

Knowledge of the distinctive frequencies and amplitudes broken rotor bar (BRB) faults in induction motor (IM) is essential for most fault diagnosis methods. Fast Fourier transform (FFT) widely applied to diagnose within BRBs. However, this method does not provide satisfactory results if it directly stator current signal at low slip because a high-resolution spectrum required separate different ...

The use of efficient signal processing tools (SPTs) to extract proper indices for the fault detection in induction motors (IMs) is the essential part of any fault recognition procedure. The 2nd part of this two-part paper is, in turn, divided into two parts. Part two covers the signal processing techniques which can be applied to non-stationary conditions. In this paper, all utilized SPTs for n...

Through equipment monitoring, the uptimes of machines are enhanced in industrial applications. The unpredicted failures risks minimized by proper monitoring. machine vibrations increased caused failure modes. vibration data requires effective analysis accurate assessment equipment. For fault feature selection and detection faults rotating equipment, empirical knowledge is required. Low efficien...