pc based dc motor speed controller using pwm techniques
Tài liệu Mechatronics DC Motor / Tachometer Closed-Loop Speed Control System ppt
Ngày tải lên :
25/01/2014, 13:20
... 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
...
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A Windows PC based robot controller - An open architecture
Ngày tải lên :
16/02/2014, 09:13
... 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,...
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Kiến trúc PC-based Control trong hệ thống điều khiển phân tán.pdf
Ngày tải lên :
20/08/2012, 11:33
... 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...
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Bộ điều khiển số PID điều khiển DC motor
Ngày tải lên :
23/04/2013, 14:48
... 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...
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DC Motor - Content
Ngày tải lên :
28/10/2013, 05:15
... 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 - 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:...
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Tài liệu Brushed DC Motor Fundamentals doc
Ngày tải lên :
22/12/2013, 14:15
... 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...
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Direct torque and indirect flux control of brushless DC motor with non sinusoidal back EMF without position sensor
Ngày tải lên :
03/01/2014, 19:45
... 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...
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Direct torque and indirect flux control of brushless DC motor
Ngày tải lên :
03/01/2014, 19:46
... 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...
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Direct torque control of four switch brushless DC motor with non sinusoidal back EMF
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...
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Pseudo vector control – an alternative approach for brushless DC motor drives
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...
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Tài liệu Báo cáo khoa học: "Sense-based Interpretation of Logical Metonymy Using a Statistical Method" pdf
Ngày tải lên :
20/02/2014, 09:20
... 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...
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The Brook Crompton - Bull dc motor range
Ngày tải lên :
20/03/2014, 11:58
... 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....
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Brushless DC Motor Control Made Easy potx
Ngày tải lên :
30/03/2014, 07:20
... 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...
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Báo cáo khoa học: "A spoken dialogue interface for TV operations based on data collected by using WOZ method" pptx
Ngày tải lên :
31/03/2014, 03:20
... 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...
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FPGA based PWM techniques for controlling inverter
Ngày tải lên :
14/05/2014, 22:37
... [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…………………………...
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