wireless speed control of dc motor using pwm pdf

... B r e r v r B r I r F r B r v r e r B r I r F r Đặc tính cơ của động cơ DC kích từ nối tiếp Example 4: Example 5: Đặc tính cơ 4 phần tư...

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... Staff Study Sponsors The Centers for Disease Control and Prevention The Department of Health and Human Services Of ce of Minority Health The Department of Veterans Affairs The National Viral Hepatitis ... Ashbel Smith Professor and Dean Emeritus, University of Texas, School of Public Health, Houston, Texas Harvey J. Alter Chief, Infectious Diseases Sec- tion, Department of Transfusion Medicine, ... Bureau of Infectious Disease Preven- tion, Response, and Services, Massachusetts Department of Health, Jamaica Plain, Mas- sachusetts Alison A. Evans Assistant Professor, Depart- ment of Epidemiology...

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... pollution loadings. Agriculture is only one of a variety of causes of non-point sources of pollution, however it is generally regarded as the largest contributor of pollutants of all the categories. 42 Fertilizers ... MANAGEMENT AND CONTROL Prediction of water quality impacts of pesticides and related land management practices is an essential element of site-specific control options and for the development of generic approaches ... and application of pesticides for the control of a wide variety of insectivorous and herbaceous pests that would otherwise diminish the quantity and quality of food produce. The use of pesticides...

Ngày tải lên: 29/03/2014, 14:20

... eigenvector placement which offers more degrees of freedom. 452 Analysis and Control of Linear Systems 14.2.2.7. Summarization The analysis of the time behavior of a controlled system was done ... eigenvector. Figure 14.6. Shift of a set of poles with minimum dispersion 454 Analysis and Control of Linear Systems detect the dominant modes (good degree of controllability/observability, etc; ... Multi-variable Modal Control 451 We note: – E k , F k the k th rows of E,F; – z k , v k the k th inputs of z, v ; – H k the k th columns of H. The open loop relation between the inputs and the controlled...

Ngày tải lên: 09/08/2014, 06:23

... features of primate transcriptomes using sequencing. Genome Biology 2010, 11:125. Khaitovich Genome Biology 2010, 11:125 http://genomebiology.com/2010/11/7/125 Page 3 of 3 e completion of the ... by sequencing of the genomes of closely related primate species, such as the chimpanzee and the rhesus macaque. e motivation was simple: as the genome provided the blueprint of an organism, ... the boundaries of most human genes, including transcription start and termination sites and the splicing patterns of internal exons, are rather fuzzy [2-6]. In addition, many of the identified...

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... Search rules of the various cases of operation are summarized in the table I. Fi g.4. Operation modes of buck boost converter 2 Unlike 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 ... converted into DC power through diode bridge rectifier circuits with a unity power factor and the load current is continuous [13] 3 tdcdc PVIVI== (3) Where, V dc , I dc are DC side voltage...

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... and effectiveness of the sensorless three-phase conduction DTC of a BLDC motor drive with six-switch inverter. 2. The Proposed Sensorless DTC of Four-Switch BLDC Motor Drive Using Three-Phase ... conduction DTC of BLDC motor drive with six-switch inverter scheme. Keywords: Brushless dc (BLDC) motor, sliding mode observer, direct torque control (DTC), stator flux control, fast torque ... Conduction 2.1 Principles of the Proposed Method Title Block Indirect torque control method of BLDC motor explained in [9] was extended to a direct torque and indirect flux control technique for...

Ngày tải lên: 03/01/2014, 19:45

... INDIRECT FLUX CONTROL OF BRUSHLESS DC MOTOR 355 TAB L E I S WITCHING T ABLE FOR DTC OF BLDC M OTOR U SING T HREE - PHASE C ONDUCTION indirectly kept at its optimum level, while the motor speed is less ... 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 with nonideal ... maximum-efficiency control of BLDC motor, ” IEEE Trans. Ind. Electron., vol. 47, no. 1, pp. 109–114, Feb. 2000. [22] L. Hao and H. A. Toliyat, “BLDC motor full -speed operation using hybrid sliding...

Ngày tải lên: 03/01/2014, 19:46

... 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 ... effectiveness of the two-phase four-switch DTC of a BLDC motor drive in the constant torque region. II. T HE P ROPOSED FOUR - SWITCH D IRECT T ORQUE C ONTROL OF BLDC M OTOR D RIVE A. Principles of ... regulation are showed in Fig. 4 for four-switch DTC of BLDC motor drive. The overall block diagram of the closed-loop four- switch DTC scheme of a BLDC motor drive in the constant torque region is...

Ngày tải lên: 03/01/2014, 19:46

... Aproximate Dead-Beat Control stratigy for the disign of functions regulators in DC/ DC Converters", EPE Trondheim 1997, Vol. 3, pp. 155-160. Figure 5 5 capacitor v v oltage of the output ... cas e er of PV ge n r ature and cl ition it is ne V-I charac t by the DC/ D o al of the s y h constant a m p oint of the u e to load u n a nd midpoi n s problem t h d ing to load a r region of ... a lue of the l o g e major lo o o the 0 -sceq u d ed. e l of the DC / ). The digit a c e voltage w c tor. p ly the load i mplemente d o ad current i s o p is constr u u ence of cu r / DC convert e a l...

Ngày tải lên: 19/01/2014, 02:20

... 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 ... dynamic system investigation of a DC motor using a tachometer as a speed sensor. The tachometer is integral to the DC motor used in this case study. Other candidate speed sensors are optical encoders ... pulse-width-modulated (PWM) power amplifier. Motor speed is measured using an analog tachometer. Figure 2. Physical System Mechatronics Kevin Craig DC Motor / Tachometer Closed-Loop Speed Control...

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