the main purpose of this paper is to introduce afast method for gene prediction in dna sequences based on the period-3 property in exons. first, the symbolic dna sequences are converted to digital signal using the eiip method. then, to reduce the effect of background noise in the period-3 spectrum, we use the discrete wavelet transform (dwt) at three levels and apply it on the input digital sig...

The stator winding insulation system is the most critical and weakest part of EMU’s (electric multiple unit’s) traction motor. effective diagnosis for ITSC (inter-turn short-circuit) faults can prevent a fault from expanding into phase-to-phase or ground short-circuits. TCU (traction control unit) controls inverter to output SPWM (sine pulse width modulation) excitation voltage when motor at st...

Cross-correlation based time delay estimates (TDE) can be used for direction-of-arrival (DOA) estimation with an acoustic array in not-too-reverberant environments. In order to benefit from the computational efficiency of TDE-based DOA estimation, and concentrating on applications that use a compact microphone array and low sampling frequency, we use a combination of approaches to make TDE-base...

A non-invasive technique for condition monitoring of brushless DC motor drives is proposed in this study Hall-effect position sensor fault diagnosis. Position faults affect rotor feedback, resulting faulty transitions, which turn cause current fluctuations and mechanical oscillations, derating system performance threatening life expectancy. The main concept the to detect using vibration signals...

The Discrete Fourier Transform (DFT) is a mathematical procedure that stands at the center of processing inside digital signal processor. It has been widely known and argued in relevant literature Fast (FFT) useless detecting specific frequencies monitored length N because most computed results are ignored. In this paper, we present an efficient FFT-based method to detect signal, which will the...

Respiration rate monitoring using ultra-wideband (UWB) radar is preferred because it provides contactless measurement without restricting the person’s privacy. This study considers a novel non-contact-based solution single-input multiple-output (SIMO) UWB impulse radar. In proposed system, collected data are converted to several narrow-band signals generalized Goertzel algorithm (GGA), which us...

This paper looks at an approach that uses symmetric properties of the basis function to remove redundancies in the calculation of the discrete Fourier transform (DFT). We develop an algorithm, called the quick Fourier transform (QFT), that reduces the number of oating point operations necessary to compute the DFT by a factor of two or four over direct methods or Goertzel's method for prime leng...

Induction machines are essential components of many industrial installations and, therefore, their faults must be detected early. Fault detection using current spectrum analysis is attracting an increasing interest as a condition-based monitoring technique. However, its use to detect rotor asymmetries in high-power induction machines, which operate at very low slip, particularly challenging, du...