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wireless speed control of an induction motor using pwm technique with gsm

Hysteresis Voltage Control of DVR Based on Unipolar PWM 95 With comparison of the obtained results docx

Hysteresis Voltage Control of DVR Based on Unipolar PWM 95 With comparison of the obtained results docx

Tài liệu khác

... significantly reduced with the use of segmented PI controller. Induction motor startup is one of the most demanding situations for the power system, and the use of a segmented PI controller ... is performed and a series of random changes in magnitude and frequency is presented. pthe error when a motor load is started. The parameters of the induction motor are the ones of table 6: ... direction) at the crest of *av . Next, we will express aet by the Fourier series of a triangular pulse-train having an instantaneous duty cycle Dt and an instantaneous frequency iaft...
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Direct torque and indirect flux control of brushless DC motor with non sinusoidal back EMF without position sensor

Direct torque and indirect flux control of brushless DC motor with non sinusoidal back EMF without position sensor

Tài liệu khác

... quick-response and high efficiency control strategies of an induction motor, ” IEEE Trans. Ind. Appl., vol. 22, no. 5, pp. 820–827, Sep./Oct. 1986. [2] M. Depenbrock, “Direct self -control of inverter-fed ... reported to control of BLDC motor using six-switch three-phase inverter (SSTPI). Direct torque control (DTC) scheme was first proposed by Takahashi [1] and Depenbrock [2] for induction motor drives ... αsV and βsV and currents αsi and βsi, then by using (1) and (4) q- and d-axis flux linkage are drived. Also, by usig (4) q- and d-axis current are calculated. Finally, by using...
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Direct torque and indirect flux control of brushless DC motor

Direct torque and indirect flux control of brushless DC motor

Tài liệu khác

... constant and it isproportional to irqs; therefore, an indirect flux control can beachieved in the proposed DTC of BLDC motor drive.Although irqsis assumed constant meaning that it has an offsetto ... instantaneouslycontrolled by the torque controller using the integral variablestructure control (IVSC) and the space-vector PWM (SVPWM).However, this technique increases the complexity of the ... andsimplicity in their control [1]–[3].In many applications, obtaining a low-frequency ripple-freetorque and instantaneous torque and even flux control are of primary concern for BLDC motors with nonsinusoidal...
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Tài liệu Characterization of the Polymorphic Behavior of an Organic Compound Using a Dynamic Thermal and X-ray Powder Diffraction Technique pptx

Tài liệu Characterization of the Polymorphic Behavior of an Organic Compound Using a Dynamic Thermal and X-ray Powder Diffraction Technique pptx

Hóa học - Dầu khí

... 20036ArticleCharacterization of the Polymorphic Behavior of an Organic Compound Using a Dynamic Thermal and X-ray Powder Diffraction Technique David Albers, Michelle Galgoci, Dan King, Daniel Miller,Robert Newman, Linda ... of the Polymorphic Behavior of an Organic Compound Using aDynamic Thermal and X-ray Powder Diffraction Technique David Albers,‡Michelle Galgoci,†Dan King,‡Daniel Miller,†Robert Newman,*,‡Linda ... endotherm between 100and 120 °C (also due to water loss), and a melt onset between189 and 196 °C (with an apparent heat of fusion of 25–40 J/g).A representative DSC scan of Form III samples...
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ĐIỀU KHIỂN TỪ XA CÁC THIẾT BỊ ĐIỆN QUA TIN NHẮN ĐIỆN THỌAI REMOTE CONTROL OF CIVIL ELECTRICAL DEVICES USING SMS docx

ĐIỀU KHIỂN TỪ XA CÁC THIẾT BỊ ĐIỆN QUA TIN NHẮN ĐIỆN THỌAI REMOTE CONTROL OF CIVIL ELECTRICAL DEVICES USING SMS docx

Hóa học - Dầu khí

... một modem không dây hay GSM Modem, do đó chúng ta hoàn toàn có thể điều khiển được ĐTDĐ qua tập lệnh AT do Viện Tiêu Chuẩn Viễn Thông Châu Âu (EuropeanTelecommunication Standards Institute - ETSI) ... khiển Pic16f877A tích hợp sẵn bộ chuyển đổi ADC 10 bit do đó ta sẽ sử dụng các chân đầu vào analog (AN0 -AN7 ) làm các chân đo nhiệt độ của các thiết bị. Các chân từ D0-D6 sẽ làm 7 chân đầu ra điều ... trung tâm SMS đã giúp người sử dụng truy cập nhanh chóng tới các hệ thống thông tin thông qua mạng nhắn tin GSM- SMS. Với những lợi ích từ hệ thống GSM (không dây), dữ liệu có thể được truy nhập...
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báo cáo hóa học:

báo cáo hóa học: " Vision based interface system for hands free control of an intelligent wheelchair" ppt

Điện - Điện tử

... perform-ance with an average accuracy of 96.5%, while the face-based method had an accuracy of 87.5% and the head-band-based method had an accuracy of 88%. In experi-ments, the face and headband based ... travelling on an uphill (or downhill) place, theheadband method often missed the go-straight and stopcommands. And the face-based method often misseduser's face so that it cannot track ... inclination. (a) the commands of turn-left, (b) the commands of turn-right. Journal of NeuroEngineering and Rehabilitation 2009, 6:33 http://www.jneuroengrehab.com/content/6/1/33Page 9 of 17(page number...
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Báo cáo hóa học:

Báo cáo hóa học: " Research Article TSI Finders for Estimation of the Location of an Interference Source Using an Ariborne Array" docx

Báo cáo khoa học

... desired performancelevel. The technique uses any one of the TSI rays to identifyitsangleofarrivalinazimuthplaneaswellasinelevationplane and then locates the position of the transmitter. How-ever, ... channel, σ2nis the whitenoise power present in any channel and INis the unit iden-tity matrix. Without loss of generality, we use the notation s1and s2to represent s(ϕ1, θ1)ands(ϕ2, ... investigation of the perfor-mance of the TSI finder as a function of the sample size used,we have included (Figure 6)aMonteCarlosimulationofsce-nario 1. Ninety simulations were run, and an estimate of...
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Báo cáo lâm nghiệp:

Báo cáo lâm nghiệp: "Detection of cavitation events upon freezing and of water in stems using ultrasound technique" pdf

Báo cáo khoa học

... 1Scholander P.F., Love W.E. & Kanwsher J.W.(1955) The rise of sap in tall grapevines. PlantPhysiol. 30, 93-104Sucoff E. (1969) Freezing of conifer xylem andthe ... 1094-1099Zimmermann M.H. (1983) In: Xylem Structureand the Ascent of Sap. Springer-Verlag, Berlin,pp. 143 Detection of cavitation events upon freezing and thawing of water in stems using ... Universi-ty of Firenze, Italy, using 3 yr old potted plants of E. occidentalis Endl., and 4 yr old excisedlateral branches of A. excelsa R. Br. All plantshad been acclimated...
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báo cáo khoa học:

báo cáo khoa học: "Increasing delivery of an outdoor journey intervention to people with stroke: A feasibility study involving five community rehabilitation teams" pps

Báo cáo khoa học

... conceptualised and planned the study, collected andanalysed the data, and drafted the manuscript. The second author advisedon study design and writing of the manuscript. Both authors read andapproved ... involvement of t herapyassistants. Role sharing and expansion are examples of organisational interventions [35]. A more in-depthexamination of how therapists can maximise their rolesmay be of benefit ... Smallchanges i n practice, with large variations across teamscan be expected with the first wave of implementation.Changes in the vicinity of 50% to 75% are unrealistic[18], and cannot be...
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Design and Implementation of a Three-Phase Induction Motor Control Scheme

Design and Implementation of a Three-Phase Induction Motor Control Scheme

Cơ khí - Chế tạo máy

... outputs of an induction motor, we can use this motor controller to control an induction machine. ã TMS320F243 DSP controller. This is manufactured by the Texas Instruments Company and is one of ... principles for an induction motor An induction motor is an asynchronous AC (alternating current) motor. The least expensive and most widely used induction motor is the squirrel cage motor. The ... cage induction motor and the “wound motor . An explanation of the advantages and disadvantages of each is given. Essential concepts such as “synchronous speed , “slip”, “torque” and the rated...
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