High speed synchronous data generation and sampler system: application to on-line fast Fourier transform faradaic admittance measurements

1977 ◽  
Vol 49 (12) ◽  
pp. 1797-1805 ◽  
Author(s):  
R. J. Schwall ◽  
A. M. Bond ◽  
R. J. Loyd ◽  
J. G. Larsen ◽  
D. E. Smith
Keyword(s):  
Fourier Transform ◽  
Fast Fourier Transform ◽  
System Application ◽  
High Speed ◽  
Data Generation ◽  
On Line

scholarly journals Real-Time Monitoring of Micro-Electricity Generation Through the Voltage Across a Storage Capacitor Charged by a Simple Microbial Fuel Cell Reactor with Fast Fourier Transform

Energies ◽  
2019 ◽  
Vol 12 (13) ◽  
pp. 2610 ◽  
Author(s):  
Jung-Chieh Su ◽  
Szu-Ching Tang ◽  
Po-Jui Su ◽  
Jung-Jeng Su
Keyword(s):  
Fourier Transform ◽  
Fast Fourier Transform ◽  
Microbial Fuel Cells ◽  
Oxygen Demand ◽  
Electricity Production ◽  
Storage Capacitor ◽  
Anaerobic Sludge ◽  
Piggery Wastewater ◽  
On Line ◽  
Cell Reactor

The pattern of micro-electricity production of simple two-chamber microbial fuel cells (MFC) was monitored in this study. Piggery wastewater and anaerobic sludge served as fuel and inocula for the MFC, respectively. The output power, including voltage and current generation, of triplicate MFCs was measured using an on-line monitoring system. The maximum voltage obtained among the triplicates was 0.663 V. We also found that removal efficiency of chemical oxygen demand (COD) and biochemical oxygen demand (BOD) in the piggery wastewater was 94.99 and 98.63%, respectively. Moreover, analytical results of Fast Fourier Transform (FFT) demonstrated that the output current comprised alternating current (AC) and direct current (DC) components, ranging from mA to μA.

scholarly journals Diagnosis of rotor faults by fast Fourier transform using an auxiliary winding voltage

2021 ◽  
Vol 24 (2) ◽  
pp. 680
Author(s):  
Yakout Khadouj Jelbaoui ◽  
Lamiaa El Menzhi ◽  
Abdallah Saad
Keyword(s):  
Fourier Transform ◽  
Fast Fourier Transform ◽  
Early Stage ◽  
Induction Machine ◽  
Load Level ◽  
Maintenance Cost ◽  
Fast Fourier Transform Analysis ◽  
Squirrel Cage ◽  
On Line ◽  
System Breakdown

<p>Condition monitoring and on-line detection have attracted several researchers in order to carry out an efficient diagnosis of machine failures. Therefore, the detection in early stage avoids system breakdown and reduce the maintenance cost. This paper presents a new diagnosic approach to detect the broken bars and broken end ring faults for a squirrel cage induction machine based on the fast Fourier transform analysis applied on a new signature as the voltage of an auxiliary winding. The auxiliary winding is a small coil inserted between two of the stator phases, the explicit expression of its voltage is presented. The signal is monitored in six faults cases under a different load level, the emergence of the fault frequencies changes for each kind of failure. The successfully simulation results obtained show the effectiveness of this approach.</p>

scholarly journals Series Arc Fault Breaker in Low Voltage Using Microcontroller Based on Fast Fourier Transform

2021 ◽  
Vol 9 (2) ◽  
pp. 239-251
Author(s):  
Dimas Okky Anggriawan ◽  
Audya Elisa Rheinanda ◽  
Muhammad Khanif Khafidli ◽  
Eka Prasetyono ◽  
Novie Ayub Windarko
Keyword(s):  
Fourier Transform ◽  
Fast Fourier Transform ◽  
Real Time ◽  
High Speed ◽  
Low Voltage ◽  
Resistive Load ◽  
Gas Ionization ◽  
Primary Driver ◽  
Experimental Process ◽  
Ac Arc

Series Arc Fault is one of the disturbances of arcing jump is caused by gas ionization between two ends of damaged conductors or broken wire forming a gap in the insulator. Series arc fault is the primary driver of electrical fire. However, lack of knowledge of the disturbance of series arc fault causes the problem of electrical fire not be mitigated. Magnitude current is not capable to detect of series arc fault. Therefore, this paper proposes fast fourier transform (FFT) to detect series AC arc fault in low voltage using microcontroller ARM STM32F7NGH in real time. A cheap and high speed of microcontroller ARM STM32F7NGH can be used for FFT computation to transform signal in time domain to frequency domain. Moreover, in this paper, protection of series AC arc fault is proposed in the real time mode. In this experimental process, some various experiments are tested to evaluate the reliability of FFT and protection with various load starts from 1 A, 2 A, 3 A, 4 A in resistive load. The result of this experiment shows that series AC arc fault protection with STM32F7 microcontroller and FFT algorithm can be utilized to ensure series AC arc fault properly.

A Survey on FFT/IFFT Processors for Next Generation Telecommunication Systems

2017 ◽  
Vol 27 (03) ◽  
pp. 1830001 ◽  
Author(s):  
Elango Konguvel ◽  
Muniandi Kannan
Keyword(s):  
Fourier Transform ◽  
Fast Fourier Transform ◽  
Orthogonal Frequency Division Multiplexing ◽  
High Speed ◽  
Digital Signal ◽  
Path Delay ◽  
Chip Design ◽  
Optical Ofdm ◽  
Processing Device ◽  
Single Path

The Fast Fourier Transform and Inverse Fast Fourier Transform (FFT/IFFT) are the most significant digital signal processing (DSP) techniques used in Orthogonal Frequency Division Multiplexing (OFDM)-based applications which include day-to-day wired/wireless communications, broadband access, and information sharing. The advancements in telecommunication technologies require an efficient FFT/IFFT processing device to meet the necessary specifications which depend on the particular application. A real-time implementation of high-speed FFT/IFFT processor with less area that operates in minimal power consumption is essential in designing an OFDM integrated chip. A comparative study of efficient algorithms and architectures for FFT chip design is presented in this paper. It is also recommended that mixed-radix/higher-radix algorithm combined with Single-path Delay Commutator (SDC) architecture is appropriate for massive MIMO in 5G, optical OFDM, cooperative MIMO and multi-user MIMO-based applications.

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