kit 166 bidirectional dc motor speed controller

... 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 ... Experiments Mechatronics Kevin Craig DC Motor / Tachometer Closed-Loop Speed Control System 23 2. Physical System A DC motor converts direct-current (DC) electrical energy into rotational...

Ngày tải lên: 25/01/2014, 13:20

... 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 ... tín hiệu số ADC ( analog to digital converter) b. Vào ra của vi điều khiển PORTA ( PA7 … PA0 ) : là các chân số 33 đến 40. Là cổng vào ra song song 8 bít khi không dùng ở chế độ ADC. Bên trong ... tính năng công nghệ cao mà chúng em đã chọn đề tài nghiên cứu : “Bộ điều khiển số PID điều khiển DC motor . Đồ án của chúng em điều khiển động cơ một chiều bằng PID viết trên nền vi điều khiển,...

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 - Practical1 VI MẠCH 555/556 Tạo ra các xung đều nhau, tần số CRR f BA )( 49.1 + = Tạo ra xung có bề rộng ΔT khi có xung vào chân trigger ΔT=1.1RC By Lê Anh Tuấn 12/2002 DC Motor ... 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...

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

... 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), ... Indirect torque control method of BLDC motor explained in [9] was extended to a direct torque and indirect flux control technique for six-switch inverter BLDC motor in [7] which is suitable for ... equation (6) eliminates the speed term in the denominator which causes problem at zero and near zero speeds. 2.3 Control of Stator Flux Linkage Amplitude Since BLDC motor does not have sinusoidal...

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 ... proposed sensorless three-phase conduction DTC of BLDC motor drive scheme are verified through simulations and experimental results. Index Terms—Brushless dc (BLDC) motor, direct torque con- trol (DTC), fast ... Brushless DC Motor Salih Baris Ozturk, Member, IEEE, and Hamid A. Toliyat, Fellow, IEEE Abstract—In this paper, the position-sensorless direct torque and indirect flux control of brushless dc (BLDC) motor...

Ngày tải lên: 03/01/2014, 19:46

... 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 ... VECTOR SELECTION FOR DTC OF BLDC MOTOR DRIVE (CCW) Note: The italic grey area and vectors in the “X” area are not used in the proposed four-switch DTC of a BLDC motor drive. TABLE III V OLTAGE...

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=− ... 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 ... 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...

Ngày tải lên: 03/01/2014, 19:46

... dynamics on speed- controlled DC drives 59 Fig. 3.5. The torque actuation in cases when the speed controller supplies the voltage reference for the armature winding. The current controller ... the DC voltage E DC . The voltage E DC is either rectified mains voltage or the voltage obtained from a battery. The instantaneous value of the armature voltage can be + E DC , – E DC , ... designing the structure of the speed controller and setting the control parameters. In this chapter, an insight is given into traditional DC- drives with analog speed controllers, along with practical...

Ngày tải lên: 27/01/2014, 15:20

... 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 ... 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

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Ngày tải lên: 20/08/2013, 16:11

... 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...

Ngày tải lên: 17/12/2013, 14:15