Relevant bibliographies by topics / Sinusoida

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
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Academic literature on the topic 'Sinusoida'

Author: Grafiati
Published: 4 June 2021
Last updated: 11 February 2022

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Journal articles on the topic "Sinusoida"

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Luqman, Mohammad, Herwandi Herwandi, and Donny Radianto. "Rancang bangun driver inverter 1000 Watt dengan kendali EGS - 002." JURNAL ELTEK 19, no. 1 (2021): 94. http://dx.doi.org/10.33795/eltek.v19i1.290.

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Abstrak
 Penelitian ini dimulai dengan penentuan spesifikasi sistem yang akan dibuat, yaitu sebuah inverter sinusoida pada tegangan output 220Vac pada frekuensi 50 Hz dengan daya sekitar 1000 Watt. Kontrol utama menggunakan EGS-002 sebagai pembangkit sinyal SPWM dan sekaligus driver transistor switching. Sebagai peranti switching adalah 8 buah transistor MOSFET IRF 3205 dengan konfigurasi full-bridge. Sebagai pengubah sinyal SPWM menjadi sinyal sinusoida sekaligus penaik tegangan output digunakan trafo step-up 24V/220V 10A. Hasilnya berupa inverter dengan luaran berupa gelombang sinusoida dengan spesifikasi sebagai berikut: Tegangan masukan 24 VDC. Tegangan luaran 221 VAC dengan bentuk gelombang sinusoida murni pada frekuensi 50 Hz. Daya luaran sampai dengan 905 Watt. Dimensi alat adalah: Panjang 30,5 cm x Lebar 18,5 cm x tinggi 12 cm, dengan berat kurang lebih 3 kg, yang dilengkapi dengan terminal masukan 24Vdc dan 2 buah terminal output 220 Vac (stop kontak).
 
 Abstract
 This research begins with determining the specifications of the system to be made, namely a sinusoidal inverter at an output voltage of 220Vac at a frequency of 50 Hz with a power of about 1000 Watts. The main control uses the EGS-002 as the SPWM signal generator as well as the switching transistor driver. As a switching device are 8 MOSFET transistors IRF 3205 with a full-bridge configuration. To convert the SPWM signal into a sinusoidal signal as well as to increase the output voltage, a 24V / 220V 10A step-up transformer is used. The result is an inverter with a sine wave output with the following specifications: 24 VDC input voltage. Output voltage 221 VAC with pure sinusoidal waveform at a frequency of 50 Hz. Output power up to 905 Watts. The dimensions of the tool are: Length 30.5 cm x Width 18.5 cm x height 12 cm, weighing approximately 3 kg, equipped with a 24Vdc input terminal and 2 220 Vac output terminals (electric socket).
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Luqman, Mohammad, Eka Mandayatma, and Sidik Nurcahyo. "STUDI KOMPARASI UNJUK KERJA INVERTER 12V-DC KE 220 V-AC YANG ADA DI PASARAN." JURNAL ELTEK 17, no. 1 (2019): 95. http://dx.doi.org/10.33795/eltek.v17i1.135.

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Penelitan ini merupakan langkah awal penelitian yang berkelanjutan. Hal ini bermula dari banyaknya mahasiswa pada program studi teknik Elektronika baik pada jenjang Diploma-III maupun Diploma-IV yang membuat dan menggunakan inverter dalam tugas akhir/ skripsi mereka. Berdasarkan informasi dan pengamatan yang ada di tengarai mayoritas alat tidak berhasil dan mahasiswa belum memahami baik secara konsep dan desain sistem yang telah di buat. Hal ini disebabkan antara lain karena kurangnya sarana praktikum di bidang elektronika daya khususnya yang berkaitan tentang inverter. Di pihak lain, sistem inverter sangat dibutuhkan sekali dalam sistem elektronika, mulai dari sistem catu daya AC portable, sistem catu daya emergency, sistem catu daya pada energy terbarukan (sistem sel-surya, sistem angin dan lain-lain) serta pada sistem kendali industri.Pada penelitian ini digunakan 4 buah inverter yang dibeli di pasar baik secara langsung maupun secara on-line. Hasil yang didapat ada dua jenis inverter yang ada di pasaran, yaitu pertama : gelombang luaran berbentuk sinusoida yang dimodifikasi (modified sinusoida) dan kedua : gelombang luaran berbentuk sinusoida murni. Kedua jenis ini pada rating daya yang relatif sama mempunyai selisih harga yang signifikan.Tegangan luaran tidak tepat 220 volt tergantung merek inverter dengan Tingkat regulasi tegangan antara 1% hingga 7%, dan yang terbaik adalah inverter dengan merek Souer. Stabilitas frekuensi relatif baik mendekati 50 Hz, dengan toleransi maksimum 0,25%. Stabilitas frekuensi terbaik dimiliki inverter Paco dengan frekuensi 50 Hz.
 
 This research is the first step of ongoing research. This starts from the number of students in the Electronics Engineering Study Program at both Diploma-III and Diploma-IV levels who make and use inverters in their final project. Based on the information and observations that were found to be the majority of the tools were unsuccessful and the students did not understand both the concept and design of the system that had been made.This is due, among other things, to the lack of practical facilities in the field of power electronics, especially those relating to inverters. On the other hand, inverter systems are very much needed in electronic systems, ranging from portable AC power supply systems, emergency power supply systems, power supply systems to renewable energy (solar cell systems, wind systems, etc.) and to industrial control systems .In this study 4 inverters were purchased in the market either directly or online. The results obtained there are two types of inverters on the market, namely first: output waves in the form of modified sinusoidal (modified sinusoid) and second: external waves in the form of pure sinusoids. Both of these types at relatively similar power ratings have a significant price difference.Output voltage is not exactly 220 volts depending on inverter brands with voltage regulation levels between 1% to 7%, and the best is the inverter with the Souer brand.Relatively good frequency stability approaches 50 Hz, with a maximum tolerance of 0.25%. The best frequency stability is owned by a Pacoinverter with a frequency of 50 Hz.
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Luqman, Mohammad, Herwandi Herwandi, and Denda Dewatama. "Rancang bangun inverter 12v-dc ke 220v-ac 500 watt sebagai media praktikum mahasiswa." JURNAL ELTEK 18, no. 2 (2020): 83. http://dx.doi.org/10.33795/eltek.v18i2.245.

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Penelitian ini bermula dari banyaknya mahasiswa pada program studi teknik Elektronika yang membuat inverter dalam tugas akhir/ skripsi mereka. Berdasarkan informasi dan pengamatan yang ada di tengarai mayoritas alat tidak berhasil dengan baik. Pada penelitian ini dibuat inverter dengan menggunakan 4 macam modul kontrol dan rangkaian switching transistor yang berbeda. Parameter yang di amati adalah bentuk gelombang dan level tegangan sinyal luaran . Hasil yang didapat pada penelitian ini, umumnya modul kontrol inverter yang ada di pasaran menggunakan IC CD-4047-BE dengan hasil luaran berupa gelombang kotak, dan IC ATMEGA 8-16PU dari ATMEL dengan hasil berupa gelombang sinusoida tidak sempurna (75%). Untuk modul kontroller EGS-900 yang menggunakan EGS-002 sebagai kontrol utama memberikan hasil luaran berupa gelombang SPWM dengan masukan berupa tegangan 24V DC, sesudah melewati transformator penaik tegangan hasilnya berupa gelombang sinusoida murni dengan tegangan sekitar 220V dengan frekuensi 50 Hz
 
 This research stems from the large number of students in the Electronics engineering study program who make inverters in their final project / thesis. Based on the information and observations available, the majority of the tools did not work properly. In this research, an inverter is made using 4 kinds of control modules and different transistor switching circuits. The parameters observed were the waveform and voltage level from the output signal. The results obtained in this study, generally inverter control modules on the market use IC CD-4047-BE with the output in the form of a square wave, and IC ATMEGA 8-16PU from ATMEL with the result in the form of imperfect sinusoid waves (75%). For the EGS-900 controller module, which uses EGS-002 as the main control, it gives an output in the form of an SPWM wave with an input in the form of 24V DC voltage, after passing through the step-up transformer the result is a pure sine wave with a voltage of about 220V with a frequency of 50 Hz.
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Muchlas, Muchlas, and Supri Supri. "PENGENDALI MOTOR INDUKSI 1 FASA DENGAN METODE PWM SINUSOIDA BERBASIS MIKROKONTROLER 68HC11." TELKOMNIKA (Telecommunication Computing Electronics and Control) 4, no. 3 (2006): 167. http://dx.doi.org/10.12928/telkomnika.v4i3.1312.

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SAODAH, SITI, and SRI UTAMI. "Perancangan Sistem Grid Tie Inverter pada Pembangkit Listrik Tenaga Surya." ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika 7, no. 2 (2019): 339. http://dx.doi.org/10.26760/elkomika.v7i2.339.

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ABSTRAKGrid Tie Inverter (GTI) merupakan inverter yang digunakan untuk mengubah energi yang dihasilkan panel surya berupa arus searah (DC) menjadi arus bolakbalik (AC). Keluaran dari GTI berupa bentuk gelombang sinusoidal yang masih belum ideal dan mempunyai nilai Total Harmonic Distortion (THD) di atas 3% serta nilai efisiensi belum mencapai 90%. Pengurangan nilai THD dan peningkatan efisiensi dapat dilakukan melalui proses kontrol switching pada inverter. Penelitian ini mengusulkan inverter dengan boost converter dua tahap, buck converter dua tahap, rangkaian switching control inverter, H-Bridge inverter dan rangkaian LC filter. Teknik switching dari inverter yang diusulkan terdiri dari kombinasi modulasi lebar pulsa sinusoida dan gelombang persegi. Berdasarkan hasil pengujian didapatkan nilai THD sebesar 4,97%. Terdapat selisih sebesar 1,97% dari nilai awal perancangan. Untuk efisiensi rata-rata inverter off-grid (tidak terkoneksi dengan PLN) sebesar 89,48% dan 79,4% untuk inverter on-grid (terkoneksi dengan PLN).Kata kunci: GTI, boost converter, buck converter, switching control,grid, THD. ABSTRACTGrid Tie Inverter (GTI) is an inverter used to convert energy resulted by solar panels in the form of direct current (DC) to alternating current (AC). The output of GTI is unideal sinusoidal and having Total Harmonic Distortion (THD) above 3% and efficiency below 90%. Reducing the THD value and increasing efficiency can be done through switching control process on inverters. This research proposed an inverter using two-stage boost converter, two-stage buck converter, an inverter switching control circuit, H-Bridge inverter and LC filter circuit. The switching technique of the proposed inverter system combined sinusoidal and square wave width modulation. The result showed THD of the proposed system is 4.97%, and still, there is a difference of 1.97% of the desired value. For average efficiency of off-grid systems (not connected with State Electricity Company/PLN) is 89.48% and 79.4% for on-grid systems (connected with PLN).Keywords: GTI, boost converter, buck converter, switching control,grid, THD
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DeLeve, Laurie D., Yoshiya Ito, Nancy W. Bethea, Margaret K. McCuskey, Xiangdong Wang, and Robert S. McCuskey. "Embolization by sinusoidal lining cells obstructs the microcirculation in rat sinusoidal obstruction syndrome." American Journal of Physiology-Gastrointestinal and Liver Physiology 284, no. 6 (2003): G1045—G1052. http://dx.doi.org/10.1152/ajpgi.00526.2002.

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Mechanisms leading to the obstruction of the microcirculation in sinusoidal obstruction syndrome (SOS) have been unclear. Because this occurs at the onset of disease, this is a potential key target for therapeutic intervention. Rats were treated with monocrotaline with or without continuous intraportal infusion of glutathione and were studied at 0.5, 1, 2, 4, 6, and 10 days after monocrotaline treatment with the use of in vivo microscopy and transmission electron microscopy. Sinusoidal perfusion decreased from days 1 through 10 with a nadir on day 4. At 12 h, numerous swollen sinusoidal endothelial cells (SECs) were observed. Subsequently, red blood cells penetrated into the space of Disse through gaps between and through swollen SEC and dissected the sinusoidal lining away from the parenchymal cells. Sinusoidal blood flow was obstructed by an embolism of aggregates of sinusoidal lining cells, red blood cells, and adherent monocytes. All changes were prevented by glutathione infusion, notably the initial swelling of SEC. SOS is initiated by changes in SEC. Microcirculatory obstruction is due to dissection of the sinusoidal lining, followed by embolization of the sinusoid by sinusoidal lining cells, compounded by aggregates of monocytes adherent in the sinusoids. Glutathione prevents SOS by preserving an intact sinusoidal barrier.
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Kermani, Pouneh, Anita Ramnarain, Raul Catena, et al. "Laminin Expression Is Necessary for Maintenance of the Vascular Hematopoietic Niche." Blood 118, no. 21 (2011): 217. http://dx.doi.org/10.1182/blood.v118.21.217.217.

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Abstract Abstract 217 Laminins are heterotrimeric proteins that are the backbone for all basal laminas. They provide structural support, points for focal adhesion, and biochemical feedback for nearby cells. Laminins are found in many tissues, including bone marrow and lymphoid organs, and are detected in the discontinuous basal lamina of sinusoidal blood vessels. Laminin g1 is the predominant gamma subunit found in the bone marrow and lymphoid tissues. Here we show that the continuous expression of laminin in adulthood is necessary for viability of the vascular hematopoietic niche (sinusoidal endothelial cells). In the absence of laminin, this niche fails and hematopoiesis is impaired. To determine if sinusoidal laminin expression correlates with bone marrow failure and recovery, we used a well-established model of bone marrow failure. Wild type mice were treated with a sublethal dose of 5-fluoruracil (5-FU), and bone marrow was analyzed for disruption of sinusoid architecture and endothelial cell receptor and laminin expression. As described in other studies, shortly after treatment with 5-FU, bone marrow sinusoids became disorganized and hemorrhagic, and endothelial cells lost expression of VEGFR2. In addition, sinusoids lost their laminin-containing basal lamina. These changes correlated with bone marrow failure and onset of peripheral blood pancytopenia. As the sinusoids regained normal cytoarchitecture and VEGFR2 expression was normalized, sinusoid expression of laminin also returned to basal levels. With 5-FU-induced bone marrow failure and recovery, hematopoiesis correlated with laminin expression in the vascular hematopoietic stem cell niche. To test whether laminin expression directly affects the quality of the niche and hematopoiesis, a mutant mouse line was generated in which laminin g1 expression could be deleted by brief exposure to tamoxifen (TM). Control mice were littermates that lacked the TM-responsive Cre transgene. Prior to TM treatment, adult mutant and control mice had normal peripheral blood cell counts, and there was no evidence of gene recombination in genomic DNA samples. Adult mutant and control mice were then injected with either TM or vehicle, and the peripheral blood, bone marrow, spleen, and liver were collected after three weeks. Laminin g1 genes were deleted and laminin expression was lost in bone marrow, spleen, and liver sinusoids of only the TM-treated mutant mice. These mice also became thrombocytopenic and leukopenic. Flow cytometry showed early arrest of B-lymphocyte development within the bone marrow, bone marrow sinusoids became hemorrhagic, and the normal cytoarchitecture of the sinusoids and endothelial expression of VEGFR2 were lost. All other mouse groups were unaffected. These results suggest that continuous laminin expression is necessary for support of sinusoidal endothelial cells and the vascular hematopoietic niche. Disruption of the hematopoietic microenvironment is sufficient to alter blood cell development and release into peripheral circulation. These studies support the critical role of the microenvironment and stroma in supporting hematopoiesis. Disclosures: No relevant conflicts of interest to declare.
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Dmitruk, Michał. "Sposób postrzegania sacrum w architekturze współczesnej." Teka Komisji Architektury, Urbanistyki i Studiów Krajobrazowych 11, no. 4 (2016): 7–14. http://dx.doi.org/10.35784/teka.578.

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Od świtu ludzkości, czasów organizowania się i gromadzenia wspólnot osadniczych, poprzez czasy formowania się pierwszych miast, towarzyszyła człowiekowi wiara w różnorodne bóstwa. Wraz z rozwojem kulturowym i społecznym także systemy wierzeń ulegały ujednolicaniu, kodyfikacji i przyciągały coraz większą liczbę wiernych, stając się czynnikiem społeczno-politycznym wpływającym istotnie na kształt i kierunki rozwoju młodych cywilizacji. Wraz ze wzrostem znaczenia nowych idei, organizacji przez nie przestrzeni sacrum i formalizacji za­chowań, zaczęto kult „przekuwać w kamień”. Analizując architekturę sakralną każdej epoki i studiując jej historię, można zaobserwować jak zmieniała się sinusoida stosunków społecznych pomiędzy tolerancją i religijnym współistnieniem z jednej strony, a nienawiścią i dążeniem do dominacji z drugiej. We współczesnym, bardzo zróżnicowanym, pełnym mnogości wyznań i różnic kulturowych świecie, architekci stają przed wyzwaniem w jaki sposób kształtować architekturę sakralną aby służyła pokojowej koegzystencji, akceptowaniu różnic, nie będąc jednocześnie zarzewiem konfliktów, wzajemnych roszczeń i pretensji.
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Sawitri, Kania, Rustamaji Rustamaji, and Aldi Adhari. "OSILATOR 121,5 MHZ PADA ELT MENGGUNAKAN VCO MC1648." Transmisi 22, no. 1 (2020): 30–37. http://dx.doi.org/10.14710/transmisi.22.1.30-37.

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Pada saat terjadi kecelakaan pesawat terbang di suatu tempat, dapat diketahui posisi atau lokasinya dengan menggunakan suatu alat yang diletakkan pada badan pesawat terbang tersebut, yaitu emergency locator transmitter (ELT). Pada ELT terdapat komponen osilator sebagai pembangkit sinyal pada frekuensi 121,5 MHz, dengan spesifikasi militer yang tidak tersedia di pasar bebas. Pada penelitian ini dilakukan perancangan dan realisasi voltage controlled oscillator (VCO) menggunakan MC1648 sebagai osilator pada frekuensi 121,5 MHz, serta implementasinya pada pembangkit sinyal ELT. Hasil pengukuran menunjukkan VCO sebagai osilator dapat membangkitkan sinyal keluaran berupa gelombang sinusoida dengan tegangan antara 11,60 s.d. 41,5 mVpp dan rentang frekuensi 90,88 s.d. 126,75 MHz, dimana frekuensi = 121,5 MHz dapat dibangkitkan pada tegangan DC masukan = 4,25 VDC. Rangkaian VCO sebagai osilator 121,5 MHz hasil penelitian ini, dapat diimplementasikan pada pembangkit sinyal ELT hasil penelitian sebelumnya, sehingga dapat dibangkitkan sinyal ELT pada frekuensi 121,5 MHz, berupa gelombang AM dengan indeks modulasi = 24,05%.
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Septiana, Adella Wulan, and Iman Setiono. "PENGATURAN PERGESERAN SUDUT FASA 120º SEBAGAI PEMBANGKIT GELOMBANG KOTAK PADA INVERTER TIGA FASA." Gema Teknologi 19, no. 1 (2016): 18. http://dx.doi.org/10.14710/gt.v19i1.21958.

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Adella Wulan Septiana, Iman Setiono in this paper explain that Three phase electricity is widely used in large and home industries. However, not all industries or electricity users can enjoy three-phase resources because the installation is quite expensive. So that the use of a single phase to three phase electric converter is needed. One alternative that can be done is by making an inverter. The inverter is a hardware device that functions to convert direct current (DC) voltage into alternating current (AC) voltage. From the 220 VAC voltage enter the step up transformer then to the rectifier circuit so that the voltage generated is 380V. Then IC 555 is used as a box wave generator with a frequency output of 322.7 Hz. Then the output goes into the IC 74175 flip-flop circuit as a phase shift that produces three outputs, where each output has a high and low value with a frequency of 53.8 Hz. Output from rectifier and 74175 is used as input for IGBT drivers. Keywords: three phase electricity, shift register, flip-flop 74175, inverter.ReferencesAfrizal, Mokhamad Asrul & Ainur Rofiq. Perencanaan dan Pembuatan Modul Inverter 3 Phase sebagai Suplai Motor Induksi pada Penngembangan Modul Praktikum Pengemudi Listrik. Proyek Akhir D3 Teknik Elektro Industri. Surabaya: Politeknik Negeri Surabaya Institut Teknologi Sepuluh November.Agus Cahya & Dedid Cahya. Rancang Bangun Inverter 3 Fasa untuk Pengaturan Kecepatan Motor Induksi. Proyek Akhir Teknik Elektronika. Surabaya: Politeknik Negeri Surabaya Institut Teknologi Sepuluh November.Agus Rusdiyanto & Bambang Susanto. Perancangan Inverter Sinusoida 1 Fasa dengan Aplikasi Pemrograman Rumus Parabola dan Segitiga sebagai Pembangkit Pulsa PWM. http://www.telimek.lipi.go.id/xdata/docs/BS18.pdf.Erfan, JC. 2016. Inverter 3 Fasa 220 Volt dengan Output Sinusoidal Frekuensi 50 Hz menggunakan Arduino dengan Teknik Direct Synthesis. Tugas Akhir S1 Teknik Elektro. Surakarta: Universitas Muhammadiyah Surakarta.
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Dissertations / Theses on the topic "Sinusoida"

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Sluše, Jan. "Optimalizace sinusového čerpadla." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2012. http://www.nusl.cz/ntk/nusl-230388.

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The aim of the diploma thesis is to design the technical solution of minimization of frictional losses, which occur when using a sine pump at position of the shaft locking and on the impeller wheel. The losses originating from the frictional forces have a negative influence on the lifetime of individual parts and economy of the pump. In the first part the author describes sine pumps from the constructional point of view and the main producers are mentioned. The second part contains suggestions on the parameters of the pump and various possibilities of solutions. The last part covers the experiment and conclusions.
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Balci, Burak. "On The Detection Of Sinusoidal Signals Under Sinusoidal Interference." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12612785/index.pdf.

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A complex exponential waveform embedded in white noise can be optimally detected by matched filtering which is equivalent to Discrete Fourier Transform (DFT). However, if the input includes multiple complex exponentials, the DFT processing is not optimal. The frequency spectrum of the complex exponential signal with finite observation interval is not impulse. The spectrum includes side-lobes called spectral leakage.Because of the strong side-lobes, weak components can be masked, or side-lobes can be interpreted as independent complex exponentials causing false alarms. The conventional approach is to suppress side-lobes by using an amplitude weighting function, called a window function. However, windows reduce the signal to noise ratio at the output and also widens the main lobe in the spectrum resulting in a loss of frequency resolution. In this thesis, the problem of detection of a complex exponential signal under a secondary complex exponential interference is investigated. Alternative windowing techniques such as spatially variant apodization (SVA), dual apodization (DA) are studied in the context of detection of weak sinusoids under strong sinusoidal interference. The detection performance of SVA and DA is compared with the conventional methods and the optimal detector.
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Mazel, David S. "Sinusoidal modeling of speech." Thesis, Georgia Institute of Technology, 1986. http://hdl.handle.net/1853/13873.

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Muševič, Sašo. "Non-stationary sinusoidal analysis." Doctoral thesis, Universitat Pompeu Fabra, 2013. http://hdl.handle.net/10803/123809.

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Muchos tipos de señales que encontramos a diario pertenecen a la categoría de sinusoides no estacionarias. Una gran parte de esas señales son sonidos que presentan una gran variedad de características: acústicos/electrónicos, sonidos instrumentales harmónicos/impulsivos, habla/canto, y la mezcla de todos ellos que podemos encontrar en la música. Durante décadas la comunidad científica ha estudiado y analizado ese tipo de señales. El motivo principal es la gran utilidad de los avances científicos en una gran variedad de áreas, desde aplicaciones médicas, financiera y ópticas, a procesado de radares o sonar, y también a análisis de sistemas. La estimación precisa de los parámetros de sinusoides no estacionarias es una de las tareas más comunes en procesado digital de señales, y por lo tanto un elemento fundamental e indispensable para una gran variedad de aplicaciones. Las transformaciones de tiempo y frecuencia clásicas son solamente apropiadas para señales con variación lenta de amplitud y frecuencia. Esta suposición no suele cumplirse en la práctica, lo que conlleva una degradación de calidad y la aparición de artefactos. Además, la resolución temporal y frecuencial no se puede incrementar arbitrariamente debido al conocido principio de incertidumbre de Heisenberg. \\ El principal objetivo de esta tesis es revisar y mejorar los métodos existentes para el análisis de sinusoides no estacionarias, y también proponer nuevas estrategias y aproximaciones. Esta disertación contribuye sustancialmente a los análisis sinusoidales existentes: a) realiza una evaluación crítica del estado del arte y describe con gran detalle los métodos de análisis existentes, b) aporta mejoras sustanciales a algunos de los métodos existentes más prometedores, c) propone varias aproximaciones nuevas para el análisis de los modelos sinusoidales existentes i d) propone un modelo sinusoidal muy general y flexible con un algoritmo de análisis directo y rápido.<br>Many types of everyday signals fall into the non-stationary sinusoids category. A large family of such signals represent audio, including acoustic/electronic, pitched/transient instrument sounds, human speech/singing voice, and a mixture of all: music. Analysis of such signals has been in the focus of the research community for decades. The main reason for such intense focus is the wide applicability of the research achievements to medical, financial and optical applications, as well as radar/sonar signal processing and system analysis. Accurate estimation of sinusoidal parameters is one of the most common digital signal processing tasks and thus represents an indispensable building block of a wide variety of applications. Classic time-frequency transformations are appropriate only for signals with slowly varying amplitude and frequency content - an assumption often violated in practice. In such cases, reduced readability and the presence of artefacts represent a significant problem. Time and frequency resolu
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Hamilton, Brian. "Non-stationary sinusoidal parameter estimation." Thesis, McGill University, 2012. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=106316.

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Parameter estimation is an essential step in sinusoidal modelling for additive sound synthesis, speech synthesis, and digital audio effects. This thesis investigates parameter estimation for a non-stationary sinusoidal signal model with a polynomial log-amplitude and a polynomial phase up to a given order. Two existing parameter estimation methods are investigated (the Reassignment Method and the Derivative Method) for the non-stationary sinusoidal model up to second-order. These methods are related to time-frequency reassignment for the spectrogram and they are shown to be biased by the effect of second-order log-amplitude and second-order phase modulations on spectrogram reassignment. Three generalized parameter estimations methods (the Distribution Derivative Method, the Generalized Reassignment Method, and the Generalized Derivative Method) that provide unbiased estimators for the non-stationary sinusoidal model up to any order are presented and formulated in a new, unified framework. These generalized methods are also related to spectrogram reassignment and it is shown that they correct the bias present in the second-order methods. Practical comparisons of the generalized methods and the theoretical lower limits of estimator performance, the Cramér-Rao bounds, are carried out in experimental tests with synthetic signals. For the sake of completeness, another state of the art method (the Quadratic Interpolated Fast Fourier Transform method) based the Fourier transform of a Gaussian windowed signal, is extended to second-order log-amplitude modulation and tested along with the generalized methods.<br>L'estimation des paramètres est une étape essentielle de la modélisation sinusoïdale dans des domaines tels que la synthèse sonore additive, la synthèse vocale, et les effets audio numériques. Cette thèse examine ce problème dans le cas d'un modèle de signal sinusoïdal non-stationnaire, dont l'amplitude logarithmique et la phase sont représentées par deux polynômes d'ordre inférieur ou égal à un entier donné. Deux méthodes d'estimation d'un modèle non-stationnaire d'ordre inférieur ou égal à deux (méthode par réallocation et méthode de la dérivée), toutes deux reliées à la réallocation du spectrogramme dans le domaine temps-fréquence, sont étudiées. Nous démontrons la présence d'un biais d'estimation, conséquence des modulations conjointes au second ordre, d'amplitude logarithmique et de phase, du spectrogramme réalloué.Sont ensuite présentées et reformulées dans un formalisme unificateur trois méthodes d'estimation généralisées (la méthode des distributions dérivées, la méthode de réallocation généralisée, et la méthode de la dérivée généralisée). Nous démontrons que ces méthodes, également liées au spectrogramme réalloué, fournissent des estimateurs non-biaisés pour le modèle sinusoïdal non-stationnaire à tous les ordres et corrigent le biais existant dans le cas des méthodes à l'ordre deux. La comparaison pratique de ces méthodes généralisées, ainsi que l'établissement de la limite théorique de leur performance, sous forme de bornes de Cramér-Rao, sont établies lors de tests expérimentaux sur des signaux synthétiques. Par souci d'exhaustivité, une autre méthode d'estimation de paramètres du modèle sinusoïdal complétant l'état de l'art du domaine (la méthode par transformée de Fourier rapide avec interpolation quadratique), fondée sur la transformée de Fourier d'un signal pondéré par une fenêtre Gaussienne, est étudiée. Après avoir étendu sa formulation au modèle d'amplitude logarithmique d'ordre deux nous la testons et la comparons aux méthodes généralisées dans les mêmes conditions que précédemment.
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Prior-Wandesforde, A. R. "Estimation of exponentially damped sinusoids." Thesis, University of Southampton, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.384235.

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Silva, Bruna Martins da. "Avaliação dos efeitos agudos da vibração mecânica gerada pela plataforma vibratória triplanar nos parâmetros cardiovasculares e respiratórios em cães." Botucatu, 2019. http://hdl.handle.net/11449/183077.

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Orientador: Ivan Felismino Charas dos Santos<br>Abstract: The "TheraPlate" triplanar vibrating platform is an equipment that generates sinusoidal mechanical vibrations that spread throughout the body, increasing regional blood flow and bone mineral density; and neuromuscular stimulation. Since there is no study on the acute affects of this platform on cardiorespiratory parameters in healthy dogs of different age groups, the present study aimed to evaluate the effects of the triplanar vibrating platform "TheraPlate" in the cardiovascular and respiratory parameters. Seven young and seven elderly dogs, of medium size, breed and varied sex, and similar body structure were used. The dogs were submitted to the single session of the TheraPlate triplanar vibrating platform at the frequency of 30 Hz for 5 minutes, followed by increasing the frequency to 50 Hz for 5 minutes and ending at the 30 Hz frequency for 5 minutes without rest. The electrocardiogram was evaluated at different times; Doppler echocardiography; carotid artery doppler; systolic blood pressure; hemogasometry; heart and respiratory rate; rectal body temperature; blood count; biochemistry, cardiac marker, and glycemia were evaluated in diffetent moments. Statistical analyses were performed using the Shapiro-Wilks test, the fit of the mixed model and the Mann-Whitney test. For all analyses, a significant difference was considered when the p-value was less than 0.05. The morphometric data of young and elderly dogs were similar and classified with a body proportion below 1. Para... (Complete abstract click electronic access below)<br>Resumo: A plataforma vibratória triplanar é um equipamento que gera vibrações mecânicas sinusoidais que se propagaram por todo corpo, aumentando o fluxo sanguíneo regional e densidade mineral óssea; e estimulação neuromuscular. Visto que não existe nenhum estudo sobre os efeitos agudos da plataforma vibratória triplanar nos parâmetros cardiorrespiratórios em cães hígidos de difrentes faixas etárias, o presente estudo teve como objetivo avaliar os efeitos da mesma nos parâmetros cardiovasculares e respiratórios. Foram utilizados sete cães jovens e sete cães idosos, de porte médio, de raça e sexo variado, e estrutura corpórea similar. Os cães foram submetidos à sessão única da plataforma vibratória triplanar (TheraPlate), na frequência de 30 Hz por 5 minutos, seguidos de aumento da frequência para 50 Hz por 5 minutos e terminando na frequência de 30 Hz por 5 minutos, sem descanso. Foi avaliado, em diferentes momentos, o eletrocardiograma; ecodopplercardiograma; dopplerfluxometria; pressão arterial sistólica; hemogasometria; frequência cardíaca e respiratória; temperatura corporal retal; hemograma; bioquímica sérica, marcador cardíaco e glicemia. As análises estatísticas foram utilizadas o teste Shapiro-Wilks, o ajuste do modelo misto e o teste Mann- Whitney. Para todas as análises foi considerada diferença significativa quando o p-valor foi menor que 0,05. Os dados morfométricos dos cães jovens e idosos foram similares e classificados com a proporção corporal abaixo de 1. Os parâmetros... (Resumo completo, clicar acesso eletrônico abaixo)<br>Mestre
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Macon, Michael W. "Speech synthesis based on sinusoidal modeling." Diss., Georgia Institute of Technology, 1996. http://hdl.handle.net/1853/13904.

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Cheluvappa, Rajkumar. "Pathophysiology of Liver Sinusoidal Endothelial Cells." University of Sydney, 2008. http://hdl.handle.net/2123/2802.

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Doctor of Philosophy(PhD)<br>Owing to its strategic position in the liver sinusoid, pathologic and morphologic alterations of the Liver Sinusoidal Endothelial Cell (LSEC) have far-reaching repercussions for the whole liver and systemic metabolism. LSECs are perforated with fenestrations, which are pores that facilitate the transfer of lipoproteins and macromolecules between blood and hepatocytes. Loss of LSEC porosity is termed defenestration, which can result from loss of fenestrations and/ or decreases in fenestration diameter. Gram negative bacterial endotoxin (Lipopolysaccharide, LPS) has marked effects on LSEC morphology, including induction LSEC defenestration. Sepsis is associated with hyperlipidemia, and proposed mechanisms include inhibition of tissue lipoprotein lipase and increased triglyceride production by the liver. The LSEC has an increasingly recognized role in hyperlipidemia. Conditions associated with reduced numbers of fenestrations such as ageing and bacterial infections are associated with impaired lipoprotein and chylomicron remnant uptake by the liver and consequent hyperlipidemia. Given the role of the LSEC in liver allograft rejection and hyperlipidemia, changes in the LSEC induced by LPS may have significant clinical implications. In this thesis, the following major hypotheses are explored: 1. The Pseudomonas aeruginosa toxin pyocyanin induces defenestration of the LSEC both in vitro and in vivo 2. The effects of pyocyanin on the LSEC are mediated by oxidative stress 3. Defenestration induced by old age and poloxamer 407 causes intrahepatocytic hypoxia and upregulation of hypoxia-related responses 4. Defenestration of the LSEC seen in old age can be exacerbated by diabetes mellitus and prevented or ameliorated by caloric restriction commencing early in life
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Hamilton, Ruth Munro. "Cardiorespiratory measurements using inspired oxygen sinusoids." Thesis, University of Oxford, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.301515.

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Books on the topic "Sinusoida"

1

Lalanne, Christian. Sinusoidal Vibration. John Wiley & Sons, Ltd, 2014. http://dx.doi.org/10.1002/9781118931110.

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International, Kupffer Cell Symposium (3rd 1985 Strasbourg France). Cells ofthe hepatic sinusoid. Kupffer Cell Foundation, 1986.

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Sinusoids: Theory and technological applications. CRC Press, 2015.

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Chateigner, Guy. Électricité en 19 fiches: Régimes sinusoïdal et non-sinusoïdal. Dunod, 2008.

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McCone, Raymond. Sinusoidal modelling and coding aof speech. The Author], 2004.

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Tanikawa, Kyuichi, and Takato Ueno, eds. Liver Diseases and Hepatic Sinusoidal Cells. Springer Japan, 1999. http://dx.doi.org/10.1007/978-4-431-67935-6.

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Buksnaitis, Jonas Juozas. Sinusoidal Three-Phase Windings of Electric Machines. Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-42931-1.

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Blakeley, Christopher Richard. Non-invasive lung function measurement with inspired sinusoids. University of Birmingham, 1989.

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Borthwick, A. G. L. Nearshore circulation in the vicinity of a sinusoidal beach. University of Salford Department of Civil Engineering, 1988.

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Mah, Robert W. Threshold perception of whole-body motion to linear sinusoidal stimulation. AIAA, 1989.

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Book chapters on the topic "Sinusoida"

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Lalanne, Christian. "The Need." In Sinusoidal Vibration. John Wiley & Sons, Ltd, 2014. http://dx.doi.org/10.1002/9781118931110.ch1.

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Lalanne, Christian. "Basic Mechanics." In Sinusoidal Vibration. John Wiley & Sons, Ltd, 2014. http://dx.doi.org/10.1002/9781118931110.ch2.

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Lalanne, Christian. "Response of a Linear One-Degree-of-Freedom Mechanical System to an Arbitrary Excitation." In Sinusoidal Vibration. John Wiley & Sons, Ltd, 2014. http://dx.doi.org/10.1002/9781118931110.ch3.

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Lalanne, Christian. "Impulse and Step Responses." In Sinusoidal Vibration. John Wiley & Sons, Ltd, 2014. http://dx.doi.org/10.1002/9781118931110.ch4.

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Lalanne, Christian. "Sinusoidal Vibration." In Sinusoidal Vibration. John Wiley & Sons, Ltd, 2014. http://dx.doi.org/10.1002/9781118931110.ch5.

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Lalanne, Christian. "Response of a Linear One-Degree-of-Freedom Mechanical System to a Sinusoidal Excitation." In Sinusoidal Vibration. John Wiley & Sons, Ltd, 2014. http://dx.doi.org/10.1002/9781118931110.ch6.

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Lalanne, Christian. "Non-Viscous Damping." In Sinusoidal Vibration. John Wiley & Sons, Ltd, 2014. http://dx.doi.org/10.1002/9781118931110.ch7.

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Lalanne, Christian. "Swept Sine." In Sinusoidal Vibration. John Wiley & Sons, Ltd, 2014. http://dx.doi.org/10.1002/9781118931110.ch8.

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Lalanne, Christian. "Response of a Linear One-Degree-of-Freedom System to a Swept Sine Vibration." In Sinusoidal Vibration. John Wiley & Sons, Ltd, 2014. http://dx.doi.org/10.1002/9781118931110.ch9.

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Dancygier, Henryk. "Sinusoids." In Clinical Hepatology. Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-04519-6_6.

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Conference papers on the topic "Sinusoida"

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Heit, John, and Shad Roundy. "A Framework to Find the Upper Bound on Power Output as a Function of Input Vibration Parameters." In ASME 2014 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/smasis2014-7444.

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This paper outlines a mathematical framework necessary to determine the optimal transducer force for a given vibration input. This relationship, between input vibration parameters and transducer force gives a critical first step in determining the optimal transducer architecture for a given vibration input. This relationship also yields a theoretical maximum energy output for a system with a given proof mass and parasitic mechanical losses, modeled as linear viscous damping. This relationship is then applied to three specific vibration inputs; a single sinusoid, the sum of two sinusoids, and a single sinusoid with a time dependent frequency (chirp). For the single sinusoidal case, the optimal transducer is found to be a linear spring, resonant with the input frequency, and a linear viscous damper, with matched impedance to the mechanical damping. The resulting transducer force for the input as a sum of two sinusoids is found to be inherently time dependent. This time dependency shows that an active system (not only dependent on the states of the system) can outperform a passive system (dependent only on the states). The final application, for a swept sinusoidal input, results in a transducer of a linear viscous damper, with matched impedance to the mechanical damping, as well as a linear spring with a time dependent coefficient.
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Bonfiglio, Andrea, Kritsada Leungchavaphongse, Rodolfo Repetto, and Jennifer H. Siggers. "A Mathematical Model of Blood Circulation in the Liver Lobule." In ASME 2010 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2010. http://dx.doi.org/10.1115/sbc2010-19237.

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The liver has a specialized circulation. It is supplied by two main vessels: the hepatic portal vein, carrying nutrient-rich deoxygenated blood, and the hepatic artery, carrying oxygenated blood. The hepatic portal vein supplies up to 80% of the blood. Within the liver, both the portal vein and the hepatic artery undergo a series of successive bifurcations, which end at the portal tracts. Each portal tract contains three vessels: a portal vein, an artery and a bile duct. Blood drains out from the portal tracts into the sinusoidal space and from there into the central veins. The central veins, after a series of converging bifurcations, end at the hepatic veins, which carry blood out of the liver. The sinusoidal space consists of a network of tortuous, interconnected channels called sinusoids. One of the most common and widely accepted descriptions of the primitive units of the liver is the “classic lobule”. A diagram of an idealized arrangement of liver lobules is shown in Figure 1. Each lobule has the shape of a hexagonal prism with a portal tract running along each of the parallel edges and a central vein on the central axis. The remainder of the space is made up of sinusoids.
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Azizi, Yousof, and Ratneshwar Jha. "Damage Detection in Composite Laminates Based on Adaptive Phase Estimation of Lamb Waves." In ASME 2012 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/imece2012-88214.

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This research presents the development of a novel structural health monitoring method for identifying damage location within a composite structure. The proposed method for damage detection is based on sinusoid-tracking algorithm (STA), which is an adaptive nonstationary signal processing tool. Sinusoid-tracking algorithm is a method of extraction of nonstationary sinusoidal signals and estimation of their parameters, namely amplitude, phase and frequency which vary over time. This helps to analyze the nonstationary signals, due to nonlinearity caused by damage, in identification procedure. The proposed method makes use of the estimated phase recorded at different spots on the structure under study. Estimated phase is used to define the damage indices. By comparing the value of indices from a baseline (or healthy) case to a damaged case, at different locations on the structure, variations in the value of indices are observed especially adjacent to the location of damage. The proposed methodology is applied to experimental plate. The results of proposed method is promising in detecting location of damage.
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Yao, Jianjun, Zhenshuai Wan, Yu Fu, Tang Sheng, and Ming Yang. "An Artificial Bee Colony Algorithm for Solving Hydraulic Shaking Table Acceleration Harmonic Estimation Problem." In ASME 2018 Noise Control and Acoustics Division Session presented at INTERNOISE 2018. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/ncad2018-6105.

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Hydraulic shaking table is an important device to stimulate vibration environment, which has been widely applied to seismic simulation, aerospace and construction engineering. However, the response from the hydraulic shaking table are not considered sinusoid waveform when corresponds to a sinusoidal acceleration excitation due to the presence of harmonic distortion. This work presents an approach based on the artificial bee colony (ABC) algorithm for the harmonic component estimation in a hydraulic shaking table. The results demonstrate that the proposed method can precisely identify the harmonic component and it has great advantage of convergence as well as real-time performance.
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Cui-Yang and Gang-Wei. "Sinusoidal parameters estimation in speech sinusoidal model." In 2009 International Conference on Machine Learning and Cybernetics (ICMLC). IEEE, 2009. http://dx.doi.org/10.1109/icmlc.2009.5212796.

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Francis, R., and D. Meganathan. "Efficient 81-level sinusoidal and modified sinusoidal multi-stepped inverter." In 8th IET International Conference on Power Electronics, Machines and Drives (PEMD 2016). Institution of Engineering and Technology, 2016. http://dx.doi.org/10.1049/cp.2016.0187.

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Paden, Brad E., Nasim Mirnateghi, Luca Gentili, and Lorenzo Marconi. "Designing Nonlinear Zeros to Reject Periodic Waveforms." In ASME 2007 International Mechanical Engineering Congress and Exposition. ASMEDC, 2007. http://dx.doi.org/10.1115/imece2007-43700.

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In linear systems, designers use zeros for loop-shaping and the attenuation of disturbances. For example, jω-axis zeros can be used to reject sinusoids at a specific frequency such a 50Hz or 60Hz power line interference. In this paper we constructively design nonlinear zeros — nonlinear dynamics that reject a non-sinusoidal signal — for a class of disturbance cancellation problems involving input disturbances. Problems in this class, for example, arise in controlled mechanical systems wherein actuator forces and disturbance forces enter a feedback system at the same point. A key element of our approach is the synthesis of disturbance waveform models so that they may be included in controllers as internal models. The focus is on waveforms of “known shape” with unknown amplitude and phase. Our approach contrasts with linear repetitive control where complex periodic waveforms are rejected using linear internal models incorporating harmonic oscillators for the fundamental and a number of harmonics of the periodic waveform.
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Sulandari, Winita, Subanar, Herni Utami, Suhartono, and Muhammad Hisyam Lee. "Amplitude-Modulated Sinusoidal Model for The Sinusoidal Components of SSA Decomposition." In 2018 International Symposium on Advanced Intelligent Informatics (SAIN). IEEE, 2018. http://dx.doi.org/10.1109/sain.2018.8673374.

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Caiza, Diana Lopez, Samir Kouro, Freddy Flores-Bahamonde, and Ricardo Hernandez. "Unfolding PV Microinverter Current Control: Rectified Sinusoidal vs Sinusoidal Reference Waveform." In 2018 IEEE Energy Conversion Congress and Exposition (ECCE). IEEE, 2018. http://dx.doi.org/10.1109/ecce.2018.8558024.

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Cozzens, J. H., and M. J. Sousa. "Nonunique sinusoidal Vandermonde bases." In [Proceedings] ICASSP 91: 1991 International Conference on Acoustics, Speech, and Signal Processing. IEEE, 1991. http://dx.doi.org/10.1109/icassp.1991.150102.

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Reports on the topic "Sinusoida"

1

Li, Ta-Hsin, and Benjamin Kedem. Estimation of Multiple Sinusoids by Parametric Filtering. Defense Technical Information Center, 1992. http://dx.doi.org/10.21236/ada454954.

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Mathew, Jijo K., Andrew D. Balmos, Dana Plattner, Timothy Wells, James V. Krogmeier, and Darcy M. Bullock. Assessment of Alternative Sinusoidal Rumble Stripe Construction. Purdue University, 2018. http://dx.doi.org/10.5703/1288284316648.

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Axilrod, H. D., and J. F. Ferguson. SH Wave Scattering from a Sinusoidal Grating. Defense Technical Information Center, 1989. http://dx.doi.org/10.21236/ada219549.

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Lindsay, K. V. Readily implemented enhanced sinusoid detection in noise. Office of Scientific and Technical Information (OSTI), 1992. http://dx.doi.org/10.2172/10136676.

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Lindsay, K. V. Readily implemented enhanced sinusoid detection in noise. Office of Scientific and Technical Information (OSTI), 1992. http://dx.doi.org/10.2172/5321481.

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Michalowicz, Joseph V., Jonathan M. Nichols, and Frank Bucholtz. Calculation of Entropy and Mutual Information for Sinusoids. Defense Technical Information Center, 2009. http://dx.doi.org/10.21236/ada494612.

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Peters, Keith, and Steven Kay. Unbiased Estimation of the Phase of a Sinusoid. Defense Technical Information Center, 2002. http://dx.doi.org/10.21236/ada525814.

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Johnson, Brian, and Jerome S. Cap. Removal of Stationary Sinusoidal Noise from Random Vibration Signals. Office of Scientific and Technical Information (OSTI), 2018. http://dx.doi.org/10.2172/1423933.

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Kundu, Debasis. Asymptotic Theory of the Least Squares Estimators of Sinusoidal Signal. Defense Technical Information Center, 1997. http://dx.doi.org/10.21236/ada328320.

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Skon, Joy M. Cramer-Rao Bound Analysis for Frequency Estimation of Sinusoids in Noise. Defense Technical Information Center, 1986. http://dx.doi.org/10.21236/ada167992.

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