speed control of servo motor using arduino

Ngày tải lên: 18/12/2013, 22:06

Ngày tải lên: 15/10/2013, 16:10

Ngày tải lên: 17/12/2013, 14:15

Ngày tải lên: 12/08/2014, 18:21

Ngày tải lên: 12/10/2014, 08:30

... 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 ... control can adjust the speed of the turbine as the wind speed changes, so as to operate at the peak of the Cp curve. This will maximize the power generated for a particular wind speed, as it shown...

Ngày tải lên: 03/01/2014, 19:15

Ngày tải lên: 03/01/2014, 19:44

Ngày tải lên: 03/01/2014, 19:44

... 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 ... 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 ... Fig. 2: Block diagram of the direct torque and indirect flux control of four-switch BLDC motor drive using three-phase conduction mode without position sensor....

Ngày tải lên: 03/01/2014, 19:45

... 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 ... Overall block diagram of the position-sensorless direct torque and indirect flux control (DTIFC) of BLDC motor drive using three-phase conduction mode. Fig. 4. Simulated indirectly controlled stator ... 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...

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 ... DTC of a BLDC motor drive using four-switch inverter with faster torque response due to the fact that the voltage space vectors are directly controlled. Therefore, the direct torque controlled...

Ngày tải lên: 03/01/2014, 19:46

... 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 ... 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 ... rotor (armature) of the motor is available to drive an external load. DC motors are widely used in numerous control applications because of features such as high torque, speed controllability...

Ngày tải lên: 25/01/2014, 13:20

... đại để đóng mở cho Role 12V qua IC UNL2003A. Để phản hồi trạng thái on/off của thiết bị, trong nghiên cứu này tác gỉa sử dụng tiếp điểm đầu ra của Rơle để tạo tín hiệu ... nội dung tin cho card điều khiển để bật tắt thiết bị. Các tín hiệu phản hồi về trạng thái on/off, nhiệt độ của các thiết bị liên tục được cập nhập bởi Card điều khiển, và có thể được gửi...

Ngày tải lên: 29/03/2014, 15:20

... understanding of the mechanism underlying 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 technical difficulty of managing movement artifacts due to head or trunk control ... nature of orofacial motor impairments which degrade fine motor performance [22]. A research has reported that the most frequent abnormalities of subjects with athetoid CP included large ranges of...

Ngày tải lên: 19/06/2014, 08:20

... ring structure was smaller than that of Fig. 1(b’). This result indicated that the size of the surface structure transition can be controlled by the amount of voltage, and it needs at least 150°C. Surface ... current, and a scan speed) for each case. During the observation, an STM tip scanned from left to right and moved from bottom to top of the image. After a thermal drift reducing, using the STM tip, ... collapse of the dot structures were caused by the high mobility of In atoms at this temperature [11–14]. Surface Structure Transition at 300°C Under As 4 and In Irradiations To prevent the collapse of...

Ngày tải lên: 21/06/2014, 08:20

... tightly controlled for reproduc- ible position control of the quantum dots. In the present work, we report on in situ control of Si and Ge growth on stripe-patterned Si (001) substrates using reflection ... 5:1935–1941 123 the ridges and filling of the grooves (see STM image of Fig. 3), which decreases the amount of (001) surface area on the stripes. Toward the end of buffer growth at 520°C, however, ... a substantial downward mass transport to the bottom of the grooves. As a result, site-controlled growth of Ge islands aligned in the bottom of the grooves can be obtained only at 600°C, whereas...

Ngày tải lên: 21/06/2014, 08:20

... trace a crack of 1-1.5” length. This fitted line is then uploaded to the controller of the x-y table for position and welding speed control. Linear motors are used as the driving motors for the ... trace a crack of 1-1.5” length. This fitted line is then uploaded to the controller of the x-y table for position and welding speed control. Linear motors are used as the driving motors for the ... Another way of reducing this loss is through the use of filler metal, which is used as an auxiliary source of material to fill the gap. It also provides a means of controlling the metallurgy of the...

Ngày tải lên: 27/07/2014, 23:31

... Driscoll emphasized the importance of proper imaging prior to the procedure, using intraoperative t ourniquet to decrease the risk of bleeding, and the importance of a multidisciplinary approach ... white bar. Beier et al. Journal of Medical Case Reports 2010, 4:92 http://www.jmedicalcasereports.com/content/4/1/92 Page 2 of 4 CAS E REP O R T Open Access Control of disseminated intravascular ... visceral bleedings [13]. However, the use of rFVIIa has n ot previously been reported in the treatment of KTWS. We hypothesize that rFVIIa was successful in controlling bleeding in our patient because baseline...

Ngày tải lên: 11/08/2014, 12:20

... http://www.medsci.org 386 Limitations of this study include the low number of rats and the lack of use of various anti-adhesion agents. Our findings are also based on the result of macroscopic and histopathological ... Adhesions were scored as shown below: A) Length of adhesion: The length of adhesion before the first thoracotomy incision (mm). B) Scoring of the intensity of adhesion between the parietal pleura ... both macroscopically and microscopically. Using the findings of these analyses, the rats were further analyzed for the length of adhesion, intensity of adhesion score, pleural thickness, mesothelial...

Ngày tải lên: 25/10/2012, 11:00

... notion of us- ing SGLT inhibitors as a means to control circulating levels of glucose. The selective inhibition of hSGLT2 by thioglycoside I, which is responsible for most of the reabsorption of ... treatment of dia- betes [7]. The mechanism of action of the anti-diabetic agents used for the treatment of type 2 diabetes, in- clude increasing insulin release, improving glucose disposal, controlling ... ATP detection was assessed using a MicroBeta Trilux (PerkinElmer). A standard curve was used to determine the amount of ATP in mg of protein measured from the number of cells per well. After...

Ngày tải lên: 26/10/2012, 10:04