triac based speed control of induction motor circuit
Design and Implementation of a Three-Phase Induction Motor Control Scheme
... a control strategy that varies the frequency and voltage of the signal applied to the windings of the induction motor, while controlling the flux created in the air-gap of the induction motor. ... 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 ... the induction motor s many advantages are clearly explained. Wildi also presents the two types of induction motors: “the squirrel cage induction motor and the “wound motor . An explanation of...
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Báo cáo y học: "Comparative study of control selection in a national population -based case-control study: Estimating risk of smoking on cancer deaths in Chinese men"
... con-sistent pattern of the effect of smoking on risk of can-cer deaths. TABLE 1. Characteristics of cases and two control groups: Population -based case -control study of smoking on risk of cancer deaths ... husband and wife in control group 1 in terms of to-bacco use; (3) the causes of death in control group 2 were unrelated to tobacco exposure. Thus two sepa-rate population -based case -control studies ... prevalence of smoking between male living spouses of women who died of any cause and those spouses of women who died of some other causes other than smoking related causes. The preva-lence of smoking...
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Tài liệu A neural-network-based space-vector PWM controller for a three-level voltage-fed inverter induction motor drive doc
... anopen-loop volts/Hz-controlled induction motor drive and eval-uated thoroughly for steady-state and dynamic performancewith a conventional DSP -based SVM. The performance of the ANN -based modulator ... anopen-loop volts/Hz speed- controlled induction motor drive hasbeen evaluated with the ANN -based modulator and comparedwith that of a conventional DSP -based modulator, and showsexcellent performance. ... neural network.The performanceof acom-plete volts/Hz-controlled drive system is then evaluated with theANN -based SVM and compared with the equivalent DSP -based drive control system. Both static...
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DC bus control of variable speed wind turbine using a buck boost converter
... Search rules of the various cases of operation are summarized in the table I. Fig.4. Operation modes of buck boost converter 2Unlike constant -speed control, a variable -speed control can ... Fig.5. Probable displacement of the operating point between the operating power and the maximum power, in the event of change of the wind speed, the control of the buck-boost converter ... simple linear circuit can represent each of the two states where the switches in the circuit are replaced by their equivalent circuit during each state. The circuit diagram for each of the two...
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Direct torque and indirect flux control of brushless DC motor with non sinusoidal back EMF without position sensor
... 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 induction machine,” ... 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 ... torque control of brushless DC motor based on back-EMF vector’ , ELECTROMOTION. pp. 128-138, 2009. [7] S. B. Ozturk and H. A. Toliyat, “Sensorless Direct Torque and Indirect Flux Control of Brushless...
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Direct torque and indirect flux control of brushless DC motor
... programming -based control of brushless motors,”IEEE Trans. Control Syst. Technol., vol. 11, no. 1, pp. 139–146, Jan. 2003.[19] S. J. Kang and S. K. Sul, “Direct torque control of brushless dc motor ... author of the book DSP -Based ElectromechanicalMotion Control (CRC Press, 2003), and the Co-Editor of Handbook of ElectricMotors—2nd Edition (Marcel Dekker, 2004).Dr. Toliyat is a Fellow of the ... high-efficiency control strategies of an induction motor, ” IEEE Trans. Ind. Appl., vol. 22,no. 5, pp. 820–827, Sep./Oct. 1986.[25] M. Depenbrock, “Direct self -control of inverter-fed induction machine,”IEEE...
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Direct torque control of four switch brushless DC motor with non sinusoidal back EMF
... only the torque is controlled without speed control, the time range of control system under transient state is selected short. The motor speeds up to a very large value if the motor is run longer ... voltage, hysteresis bandwidth, motor parameters especially the winding inductance, motor speed, snubber circuit, and the amount of load torque The best way to control the stator flux linkage ... to control the stator flux linkage amplitude. On the other hand, rotational speed of the stator flux linkage can be easily controlled, therefore fast torque response is obtained. The size of...
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Tài liệu Mechatronics DC Motor / Tachometer Closed-Loop Speed Control System ppt
... angular speed ωc. Mechatronics Kevin Craig DC Motor / Tachometer Closed-Loop Speed Control System 12 7. Control Design The objective of the exercise is to control the angular speed of the ... A schematic diagram of a DC motor is shown in Figure 6. Figure 6. Schematic Diagram of a DC Motor Mechatronics Kevin Craig DC Motor / Tachometer Closed-Loop Speed Control System 10 ... Furthermore, the control of AC actuators was a difficult task at that time. Today, AC motors are also widely used as servo-motors, employing modern methods of phase-voltage control and frequency control...
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Báo cáo khoa học: "Empirically-based Control of Natural Language Generation" ppt
... 28. 63 Proceedings of the 43rd Annual Meeting of the ACL, pages 58–65,Ann Arbor, June 2005.c2005 Association for Computational LinguisticsEmpirically -based Control of Natural Language Generation ... any control mechanisms within the generator: e.g. controlling combinato-rial explosion of modifier attachment or adjective order. In this paper we present an empirically -based method for controlling ... comes from one of the samples of 1,400 observations. 62 To illustrate our approach we describe a system for controlling ‘style’ in the sense of Biber (1988) during the generation of short texts...
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Direct control methods for matrix converter and induction motor
... loop control [1],[5]. Another topic of great interest is the closed loop control of a drive system consisting of matrix converterand induction machine. Slip control and field oriented control ... Included arethe basics of Direct Torque Control, Direct Current Control and Sliding Mode Control of matrix converters. I. INTRODUCTIONIn recent years many research results on control methods for ... Convertersin Direct Torque Control of Induction Machines,” IEEE Trans.Ind. Electron., vol. 48, pp. 1057-1064, December 2001.[10] M. Depenbrok, “Direct Self -Control (DSC) of Inverter-Fed Induction Machine”,...
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Báo cáo sinh học: " Involvement of PKR and RNase L in translational control and induction of apoptosis after Hepatitis C polyprotein expression from a Vaccinia virus recombinant" doc
... phosphorylation of eIF-2α and inhibition of translation caused by the expression of HCV polyproteinFigure 7PKR mediates phosphorylation of eIF-2α and inhibition of translation caused by the expression of ... lev-els of apoptosis were similar to those obtained after theexpression of PKR from VV-PKR, used as positive control. The levels of apoptosis induced by VT7-HCV7.9 afteraddition of IPTG, were ... translational control and induction of apoptosis. These two pathways are likely to limit the rep-lication capacity of HCV. Thus, the virus-cell systemdescribed here highlights the relevance of the...
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Báo cáo hóa học: " Oromotor variability in children with mild spastic cerebral palsy: a kinematic study of speech motor control" docx
... understanding of the mechanismunderlying speech motor control. However, there is a lack of literature in quantitative measures of motor control, which may potentially characterize the nature of the ... study of speech motor control in children with CP. The lack of this type of research on CP children may be due to the technicaldifficulty of managing movement artifacts due to heador trunk control ... nature of orofacial motor impairments which degrade fine motor performance[22]. A research has reported that the most frequentabnormalities of subjects with athetoid CP includedlarge ranges of...
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báo cáo hóa học: " Vision based interface system for hands free control of an intelligent wheelchair" ppt
... proposed -based method produced the best 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%. ... http://www.jneuroengrehab.com/content/6/1/33Page 4 of 17(page number not for citation purposes)Our system is described in Figure 2 and specification of the components is illustrated in Table 2.Overview of Vision -based Control SystemThe ... CentralPage 1 of 17(page number not for citation purposes)Journal of NeuroEngineering and RehabilitationOpen AccessResearchVision based interface system for hands free control of an intelligent...
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