This section provides an overview for fast fourier transform (fft) analyzers as well as their applications and principles. Also, please take a look at the list of 7 fast fourier transform (fft) analyzer manufacturers and their company rankings. Here are the top-ranked fast fourier transform (fft) analyzer companies as of December, 2023: 1.OROS, 2.MEA Testing Systems Ltd., 3.Ono Sokki.
2018-2022: Bachelor’s in Mathematics and Physics from The Open University with an emphasis on mathematical modeling. Member (2018-2020), Treasurer (2021) and interim Chair (2021-2022) of the Mathematical and Theoretical Physics Group at the Institute of Physics.
A fast Fourier transform (FFT) analyzer is an instrument that performs an FFT analysis. Various types of vibration can occur in machinery and buildings and the FFT analyzer can be used to determine the cause of the vibration and ways of reducing it.
While spectrum analyzers and memory recorders are similar instruments to the FFT analyzer, the FFT analyzer is mainly used to observe the frequency components of low-frequency signals.
FFT analyzers are often used for vibration analysis of machinery, equipment, and buildings. Acceleration pickups are attached to the object to be measured, converted into electrical signals, and input ted into the fast Fourier transform (FFT) analyzer for processing and analysis of the frequency components. By checking the vibration and resonance frequencies generated by machines and buildings, it is possible to reinforce the structure and suppress vibration in order to prevent fatigue failure. Changing the order this way clarifies the causal relationship between reinforcing the structure, suppressing vibration, and preventing fatigue failure.
Another use is in the uneven rotation of motors: FFT analysis of motor vibration can be used to determine the source of vibration. For example, it can help to determine whether the vibration is coming from the motor's rotating shaft (rotor), the gears, or the bearings.
Another area where FFT can be used is in speech analysis. It can be used to identify the sound regions produced by people or musical instruments, or to analyze the frequency of noise to determine the location and equipment from which the sound is emanating. In this case, the sound is passed through an amplifier using a microphone, and the signal is converted and amplified for FFT analysis.
Recently, the development of office equipment and home appliances is another area where FFT is utilized, for example in evaluating the quietness of products and studying noise sources and their countermeasures. Since it is also used to identify noise sources for low-frequency signals, it is also applied to noise countermeasures for products that handle frequency signals.
The fast Fourier transform is based on the theory of the Fourier series proposed by the French mathematician Jean-Baptiste Joseph Fourier. The theory of Fourier series states that any complex waveform with periodicity can be represented by a series of simple sine (sin) and cosine (cos) waves.
In general, it is not known how much of the signal to be actually measured is periodic. Therefore, the Fourier transform cuts an appropriate amount of time from the observed waveform and assumes that the cut waveform is an infinitely repeating signal. In the early days of the Fourier transform, the calculation of the Fourier transform required an enormous number of multiplications. However, J.W. Turkey and J.W. Cooley proposed a method to reduce the number of calculations by taking the number of data to the nth power of 2. For example, if the number of data is 1,024, the number of calculations is reduced from 1,024 × 1,024 = 1,048,576 times to 10,240 times. This method is called the Fast Fourier Transform, and FFT is its acronym.
A typical waveform can be represented by three parameters: amplitude, frequency (or period), and phase (time difference). By applying FFT to this principle and using an FFT analyzer, an input waveform signal with time on the horizontal axis is transformed into a graph with frequency on the horizontal axis and amplitude of the waveform at each frequency on the vertical axis.
The first difference between an FFT analyzer and a spectrum analyzer is the range of frequencies they can handle. Spectrum analyzers handle a very wide frequency range of 10 kHz to 10 GHz. Some recent models can handle up to 50 GHz.
Another difference in usage is that fast Fourier transform analyzers are used when it is not known what frequency components are present, whereas spectrum analyzers are used to analyze the frequency components of known high-frequency signals (e.g., cellular phones and Wi-Fi transmitters).
Looking at the difference between the two in terms of the structure of the devices, a spectrum analyzer conventionally consists of analog circuits, whereas an FFT Analyzer uses an AD converter to digitize the obtained waveform and then performs an FF process to calculate the frequency and intensity distribution.
*Including some distributors, etc.
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Founded in 1944, Rion Corporation, based in Tokyo's Kokubunji City, is a precision equipment manufacturer. It specializes in three main sectors: environmental measurement instruments for noise and vibration analysis, medical equipment for hearing tests and hearing aids, and particle counters for semiconductor and pharmaceutical cleanliness measurement. Rion boasts significant market share in Japan, driven by its advanced technology and service excellence. In environmental measurement instruments, it offers noise meters, vibration meters, and frequency analyzers. In 2022, Rion expanded its environmental division by acquiring Norsonic AS, a prominent noise meter manufacturer. The company caters to diverse customers worldwide, including government agencies, research institutions, manufacturing industries, and R&D departments. With eight subsidiary companies (five in Japan and three overseas) and a global agent network spanning approximately 60 countries, Rion Corporation maintains a strong global presence.
ZETLAB Company, founded in 1992, is a Russian-based manufacturer of control and measuring systems used in metallurgy & mechanical engineering, metrological laboratories, and manufacturing enterprises including aviation, automotive, consumer, and food industries. Its portfolio includes sensors, measuring products, turnkey systems, and digital sensors. The ZETSENSOR line digital devices include digital inclinometers, strain gauges, and seismic, temperature & pressure sensors. The company supplies turnkey data measurement, measurement control, and test control systems for seismic & leak detection, and seismic impact control. The company's ANALIZ, TENZO, SEISMO, VIBRO, and ZETVIEW software enable spectral analysis, electrical parameters measurements, & generation, recording, and representation of signals.
MEA Testing Systems Ltd. established in Netanya, Israel, in 1998 is a manufacturer of Electric Rotating Machines, including Testing Systems and Dynamometers. Their product portfolio includes High Speed & High Torque EV motors, EV Powertrain, EV Four Quadrant Operation/Braking, EV Battery Testing, and Battery Simulation. The company's product have IEC 60034-2-1, CSA C390-10, IEEE 112-2004 and IS 12615 certifications. The company also provides project consulting, custom research projects, and customized services
ACO Co., Ltd., established in 1972 and headquartered in Hachioji-shi, Tokyo, Japan, is a manufacturer, distributor, and exporter of sound & vibration measuring instruments and sensors. The company manufactures high-temperature specification, preamplifier integrated, and measurement condenser microphones in various sizes including, ⅛ inch, ⅙ inch, ¼ inch, ½ inch, and 1-inch, which are utilized in construction and medical industries. ACCO also manufactures various vibration products including vibration level meters, acceleration pickups, vibration calibrators, as well as acoustic products such as ear simulators, windscreens, sound calibrators, windscreens, and infrasonic meters & sensors.
OROS is a multinational company founded in 1985 and headquartered in Grenoble, Germany known as a designer and manufacturer of noise and vibration testing systems. The company offers a wide range of products designed for various industries such as automotive, aerospace, and industrial manufacturing. Its Nexa Series Process Analyzers provide real-time insights, SpectraView Spectrophotometers ensure precise color measurement, XtremeSense Environmental Sensors monitor environmental conditions, InovaHUB Data Integration Platform integrates data for insights, and FuturaTech AI Solutions employ AI for various applications.
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