pc based dc motor speed controller using pwm techniques

... 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 ... 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 ... 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 ...

Ngày tải lên: 25/01/2014, 13:20

... rotational motors and 5 operational outputs (x, y, z and 2 orientations +/- 90 degrees around the horizontal plan). The servodrives of the motors are connected using profibus to the PC based controller. ... Each servo drive controller embeds an internal velocity control loop (Figure 11). Figure 10, Alpha5, 5 dof parallel robot Figure 11, Profibus based topology The control is based upon two ... designer of the parallel Occam based robot controller at the LSRO from which FlexCom has been inspired [12]. Bibliography : [1] J. M. Bonnet, Staübli, Real time controller abstraction layer,...

Ngày tải lên: 16/02/2014, 09:13

... 5: Kin trỳc PC- based Control â 2005 - HMS Chương 5: Kiến trúc PC- based Control 5.1 Tạisaosử dụng giải pháp PC 5.2 Các vấn đề cơ bản của giải pháp PC 5.3 Cấu hình cơ bảnmột hệ PC- based Control Các ... HMI và các chứcnăng cao cấp 20 â 2004, HONG MINH SN Chng 5: Kin trỳc PC- based Control â 2005 - HMS DCS, PLC hay PC? DCS PLC PC Qui mô ứng dụng vừa/lớnvừa/nhỏ vừa/nhỏ Thời gian >100ms > 20ms ... Kin trỳc PC- based Control â 2005 - HMS Dự phòng máy tính ₫iềukhiển Bus trường Ethernet-TCP/IP DCOM Tích cực/ Dự phòng Tích cực/ Dự phòng ĐKĐK 3 â 2004, HONG MINH SN Chng 5: Kin trỳc PC- based Control â...

Ngày tải lên: 20/08/2012, 11:33

... sau. PORTC ( PC7 PC0 ) : là các chân 22 đến 30. Cũng giống PORTA và PORTB khi là cổng vào ra song song. Nếu giao tiếp JTAG được bật, các trở treo ở các chân PC5 (TDI), PC3 (TMS), PC2 (TCK) sẽ hoạt ... loại AVR tốc độ cao, tích hợp sẵn ADC 10 bit. - AVR tích hợp sẵn LCD driver : Atmega169, 329. - AVR có tích hợp SC (power stage controller) : AT9 0PWM thường dùng trong các ứng dụng ... thay vì nhập xuất dữ liệu. - Chân 30 : AVCC cấp điện áp so sánh cho bộ ADC. - Chân 32 : AREF điện áp so sánh tín hiệu vào ADC. - Chân 33 đến 40 : Cổng vào ra dữ liệu song song A ( PORTA ) ngoài...

Ngày tải lên: 23/04/2013, 14:48

... cổng. VD3: Sử dụng thanh ghi CC 80C537, có thể đạt 5kHz. DC Motor - PWM illustration By Lê Anh Tuấn 12/2002 DC Motor - Brushless DC Động cơ một chiều không chổi than không được cấp liên tục ... 12/2002 DC Motor - Practical2 PWM SỬ DỤNG IC 555 Mạch dùng điều khiển động cơ 6V, 0.5 A với đầu vào Vin=9V U1: tạo nhịp, chính là tần số làm việc U2: Chu kỳ làm việc By Lê Anh Tuấn 12/2002 DC Motor ... ứng dụng By Lê Anh Tuấn 12/2002 DC Motor - Practical3 PWM BẰNG VI ĐIỀU KHIỂN By Lê Anh Tuấn 12/2002 VD1: Sử dụng hai timer T0,T2 của AT89C52 T0: chu kỳ của xung PWM T2: thời gian xung làm việc VD2:...

Ngày tải lên: 28/10/2013, 05:15

... drawback to SWDC motors is that they do not have precise speed control like PMDC and SHWDC motors have. FIGURE 4: SERIES-WOUND DC MOTORS Armature Brush Permanent Magnet Poles DC Voltage Supply Armature Brush Shunt Field DC Voltage Supply Armature Brush Series Field DC Voltage Supply ... the different types of BDC motors and the advantages/ disadvantages of each. Permanent Magnet Permanent Magnet Brushed DC (PMDC) motors are the most common BDC motors found in the world. These motors use ... generally more robust than PMDC motors. FIGURE 3: SHUNT-WOUND DC MOTORS Series-Wound Series-wound Brushed DC (SWDC) motors have the field coil in series with the armature. These motors are ideally suited...

Ngày tải lên: 22/12/2013, 14:15

Ngày tải lên: 03/01/2014, 19:44

Ngày tải lên: 03/01/2014, 19:44

... 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 2.1 Principles ... confirm that the proposed 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), ... supplied with SPWM voltage source inverter, while the Brushless DC (BLDC) stator phase currents are rectangular and its back-EMF is trapezoidal due to concentrated windings. BLDC motor has better...

Ngày tải lên: 03/01/2014, 19:45

... 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 than the base speed. The ... 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 mode ... in BLDC motor, are reported in [16] and [21]. These methods avoid the compli- cated harmonic coefficient calculation based on the optimization approach. Hysteresis current controllers with PWM...

Ngày tải lên: 03/01/2014, 19:46

... bill.alexander@idealpowerconverters.com Abstract—This paper presents a direct torque control (DTC) technique for brushless dc (BLDC) motors with non- sinusoidal back-EMF using four-switch inverter in the constant torque region. This approach ... of a BLDC motor drive in the constant torque region is to estimate the electromagnetic torque correctly similar to the six-switch version given in [6]. For a surface-mounted BLDC motor 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 under...

Ngày tải lên: 03/01/2014, 19:46

Ngày tải lên: 03/01/2014, 19:46

... Typical block-diagram of Phase Current Control for BLDCM drives. INVERTER BLDC motor Load PWM Current Controller Current Controller Current Controller * a i * b i * c i + + + − − − a i c i () bac iii=− ... control system for BLDC motor (Fig. 2). The motor is fed by a PWM- controlled MOSFET inverter. As we can see in Figs. 2 and 3, the currents are controlled by 3 current controllers in stationary ... supply; ã Square-wave PM motor that is fed by square-wave current and it is often called Brushless DC Motor (BLDCM). The main difference between two kinds of motors from the control viewpoint...

Ngày tải lên: 03/01/2014, 19:46

... take, and those denoting using the video, e.g., watch, view, see. Discovering such classes using the existing verb clustering techniques is our next experiment. Using sense -based interpretations ... Workshop, pages 1–9, Suntec, Singapore, 4 August 2009. c 2009 ACL and AFNLP Sense -based Interpretation of Logical Metonymy Using a Statistical Method Ekaterina Shutova Computer Laboratory University ... be an interesting exten- sion of this experiment. One of the motivations of the proposed sense- based representation is the fact that the interpreta- tions of metonymic phrases tend to form coher- ent...

Ngày tải lên: 20/02/2014, 09:20

... Contents 9715E Issue 2 DC Motors 2 Page Introduction DC motor range 3 DC motor selection MKlll range 4 Which DC motor? 4 Standards and Environment Enclosure 5 Insulation 5 Thermal Rating 5 Motor Cooling ... see page 24 9715E 8/4/05 2:42 pm Page 25 9715E Issue 2 DC Motors 13 Brushwear derection system for MKlll DC motors All the benefits of DC drives with low maintenance The Bull Electric Brushwear ... 13 9715E Issue 2 DC Motors 12 MKlll Range General The MKIII range of dc metric motors provides exceptionally high outputs per unit weight combined with complete flexibility of speed control....

Ngày tải lên: 20/03/2014, 11:58

... Setup ADC (bank1) movlw B’00001110’ ; ADC left justified, AN0 only movwf ADCON1 banksel ADCON0 ; setup ADC (bank0) movlw B’11000001’ ; ADC clock from int RC, AN0, ADC on movwf ADCON0 bsf ADCON0,GO ... control loop ;* Loop call ReadADC ; get the speed control from the ADC incfsz ADC,w ; if ADC is 0xFF we’re at full speed - skip timer add goto PWM ; add Timer0 to ADC for PWM movf DriveWord,w ; force ... the speed control potentiometer ;* and start the next reading ;* btfsc ADCON0,NOT_DONE ; is ADC ready? return ; no - return movf ADRESH,w ; get ADC result bsf ADCON0,GO ; restart ADC movwf ADC...

Ngày tải lên: 30/03/2014, 07:20

... to analog broadcasts, BS (Broadcast Satellite) digital television and data broadcasts have been operating since 2000. At the same time, TV operations for receiving such broadcasts are becoming ... viewpoint of processing speed, process- ing can be performed in real time if we use pattern- base approach. This approach is also used in other dialogue systems such as PC- based agent televi- sion ... system that operates a television through voice interactions using natural language. At the current stage of our re- search, we are using this system to inves- tigate the usefulness and problem...

Ngày tải lên: 31/03/2014, 03:20

... [40] Fig.19 RTL Schematic of Counter based PWM Generator Fig.20 RTL Schematic of Cascaded Counter based PWM Generator [1] FPGA based PWM techniques for controlling Inverter ... produce desired PWM signal. [46] Chapter 7 Conclusion and Future Work [10] 1.2 PWM Techniques There are basically two PWM techniques –Analog and Digital Techniques. ... High Frequency Counter based PWM Generator……………………39 Fig.19: RTL Schematic of Counter based PWM Generator………………………………………40 Fig.20: RTL Schematic of Cascaded Counter based PWM Generator…………………………...

Ngày tải lên: 14/05/2014, 22:37

Ngày tải lên: 22/05/2014, 18:05

Ngày tải lên: 20/06/2014, 20:20