dc motor speed control circuit design

... 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 • ... root-locus domain. Mechatronics Kevin Craig DC Motor / Tachometer Closed-Loop Speed Control System 24 Mechatronics DC Motor / Tachometer Closed-Loop Speed Control System 1. Introduction This ... Craig DC Motor / Tachometer Closed-Loop Speed Control System 11 The DC motor/ tachometer system has a single input and a single output. The input is the voltage applied across the two motor...

Ngày tải lên: 25/01/2014, 13:20

... 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

Ngày tải lên: 18/12/2013, 22:06

Ngày tải lên: 03/01/2014, 19:44

Ngày tải lên: 03/01/2014, 19:44

... 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 ... Block 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 ... 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

... force (EMF), position-sensorless control, stator flux control, torque pulsation. I. I NTRODUCTION T HE permanent-magnet synchronous motor (PMSM) and brushless dc (BLDC) motor drives are used extensively ... 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...

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 ... sampling time, dc- link 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 ... I. I NTRODUCTION Brushless dc motors have been used in variable speed drives for many years due to their high efficiency, high power factor, high torque, simple control, and lower maintenance...

Ngày tải lên: 03/01/2014, 19:46

... 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 resides on current control ... conventional 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 ... machine, Vector control, Pseudo-vector control, Torque ripple minimization. I. I NTRODUCTION A. Sine-wave PM Motor vs. Square-wave Motor: Vector Control vs. Phase Current Control With the...

Ngày tải lên: 03/01/2014, 19:46

... 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 ... reading ;********************************************************************** ;* ;* Main 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 ... 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

... volume control  Electric drill speed control Reasons for accurate speed control  Motor speed should be independent of load.  Differential drive platforms need to synchronize wheel speed ... a step response for our PID controller? Control systems  What is a control system?  What are some examples?  What are the types of control systems?  How are control systems represented? PID ... platforms need to synchronize wheel speed to go in a straight line. Motor control diagram PROCESSOR DC MOTOR ENCODER H-BRIDGE CIRCUIT ...

Ngày tải lên: 22/05/2014, 18:05

Ngày tải lên: 09/07/2014, 20:20

... amplifier design and includes Load Pull measurement and design techniques and a more analytic design example of a broadband, efficient amplifier operating from 130 to 180 MHz. The design example ... of RF Circuit Design with Low Noise Oscillators. Jeremy Everard Copyright © 2001 John Wiley & Sons Ltd ISBNs: 0-471-49793-2 (Hardback); 0-470-84175-3 (Electronic) 14 Fundamentals of RF Circuit ... pF2.0 ' ≈ cb C pF76.02.096.0 ' =−= eb C (1.82) () pF26.176.02.052.111 '' =++=+         += ebcb e L T CC r R C (1.83) 22 Fundamentals of RF Circuit Design then: [] () f E dB 3 350 10 50 2 23 3 12 10 50 350 = ++ −+ π . = 133MHz (1.71) The low...

Ngày tải lên: 08/04/2013, 10:50

... CAP-P7 1000 7805 IN 1 OUT 3 G N D 2 U4 7805 GND CAP-P6 10U CAP4 104 VCC R6 330R LED1 LED T1 TIP42 R5 10R 2 1 3 4 P O W E R 1 CONN-SIL4 Control 1 Control 2 Hình 4.6 Sơ đồ nguyên lý mạch nguồn 5V Khối này là mạch điện dùng để ổn áp điện thế ... 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...

Ngày tải lên: 23/04/2013, 14:48

Ngày tải lên: 12/09/2013, 22:38

... E 2 max Allen and Holberg - CMOS Analog Circuit Design Page II.0-3 OBJECTIVE • Provide an understanding of CMOS technology sufficient to enhance circuit design. • Characterize passive components ... Holberg - CMOS Analog Circuit Design II.5-6 IMPROVED LAYOUT METHODS FOR CAPACITORS Corner clipping: Clip corners Street-effect compensation: Allen and Holberg - CMOS Analog Circuit Design Page II.1-6 Etching Etching ... (enhancement) Allen and Holberg - CMOS Analog Circuit Design Page I.2-1 I.1 - INTRODUCTION GLOBAL OBJECTIVES • Teach the analysis, modeling, simulation, and design of analog circuits implemented in CMOS technology. •...

Ngày tải lên: 18/10/2013, 12:15

... 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

Ngày tải lên: 25/11/2013, 11:38

... components. If this equivalent circuit model is speed- independent, then the circuit is delay-insensitive. Unfortunately the class of delay-insensitive circuits is rather small. Only circuits composed of ... dissemination and use of the gathered design know-how and experience LUCS Low-Power Ultrasound Chip Set. Design methodology on low-power ADC, memory and circuit design Prototype demonstration of ... include forks. In chapter 6 we will explore the design of SI control circuits in great detail (because theory and synthesis tools are well developed). As SI circuits ignore wire delays completely some...

Ngày tải lên: 09/12/2013, 21:15

... VHDL (Computer hardware description language) 2. Electronic circuit design. 3. System design. I. Title. TK7885.7.P43 2004 621.39 0 5 dc2 2 2004040174 10 987654321 TLFeBOOK STD_LOGIC system described ... 159 8.1 Introduction 159 8.2 Design Style #1 160 8.3 Design Style #2 (Stored Output) 168 viii Contents TLFeBOOK circuit, and of an ARCHITECTURE, which describes how the circuit should func- tion. ... layout for area or for speed, which obviously also a¤ects the final circuitry. Whatever the final circuit inferred from the code is, its operation should always be verified still at the design level (after...

Ngày tải lên: 12/12/2013, 11:16