bidirectional dc motor speed controller circuit diagram
Tài liệu Mechatronics DC Motor / Tachometer Closed-Loop Speed Control System ppt
Ngày tải lên :
25/01/2014, 13:20
... 1.0 A
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 ... 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...
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Bộ điều khiển số PID điều khiển DC motor
Ngày tải lên :
23/04/2013, 14:48
... 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,...
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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 - 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...
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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
... electric motor types (i.e., brushless DC,
AC induction), BDC motors do not require a controller
to switch current in the motor windings. Instead, the
commutation of the windings of a BDC motor is ... 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...
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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
... 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...
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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 ... 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...
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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
... several
factors such as sampling time, dc- link voltage, hysteresis
bandwidth, motor parameters especially the winding
inductance, motor speed, snubber circuit, and the amount
of load torque ...
are showed in Fig. 4 for four-switch DTC of BLDC motor
drive. The overall block diagram of the closed-loop four-
switch DTC scheme of a BLDC motor drive in the
constant torque region is represented ... 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...
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Pseudo vector control – an alternative approach for brushless DC motor drives
Ngày tải lên :
03/01/2014, 19:46
... +
*
T
*
a
v
*
b
v
*
c
v
*
I
1
T
k
+
−
Fig. 2. 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...
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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 ... happens when a voltage is applied to a
DC motor. A greatly simplified electrical model of a DC
motor is shown in Figure 5.
FIGURE 5: DC MOTOR EQUIVALENT
CIRCUIT
When the rotor is stationary, ... 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...
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DC motor control for robot
Ngày tải lên :
22/05/2014, 18:05
... 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 to go in a ...
platforms need to
synchronize wheel
speed to go in a
straight line.
Motor control diagram
PROCESSOR
DC
MOTOR
ENCODER
H-BRIDGE
CIRCUIT
... circuit
U1A
74HC14A
1
2
U1B
74HC14A
3
4
U1C
74HC14A
5
6
U1D
74HC14A
9
8
U1E
74HC14A
11
10
U1F
74HC14A
13
12
C1
CAP NP
D1
DIODE
D2
DIODE
R2
POT
1
3
2
MG1
MOTOR DC
1
2
Optical encoder circuit
U6B
74HC86
4
5
6
R6 4.7K
R7 4.7K
D4
5V
D3
5V
R9 4.7K
D6
5V
D5
5V
R8 4.7K
U6A
74HC86
1
2
3
U6D
74HC86
12
13
11
U6C
74HC86
9
10
8
R10
10K
C15
0.001uF
C14
0.001uF
R11
10K
U27A
74HC14
1
2
U27B
74HC14
3
4
U27D
74HC14
9
8
U27C
74HC14
5
6
U27F
74HC14
13
12
U27E
74HC14
11
10
Tach...
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M4 Macros for Electric Circuit Diagrams in LATEX Document
Ngày tải lên :
23/05/2014, 10:53
... processing the
diagram by L
A
T
E
X. Although they are not needed for many circuit diagrams, these sizes may be
required explicitly for calculations or implicitly for determining the diagram bounding ... case for producing circuit diagrams is to read
pstricks.m4 or pgf.m4 first when dpic is the postprocessor or to set one of these as the default
configuration file.
At the top of each diagram source, ... solution is to process the diagram twice. The diagram source is processed as usual
by m4 and a pic processor, and the main document source is L
A
T
E
Xed to input the diagram and
format the text,...
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DC Motor Control docx
Ngày tải lên :
09/07/2014, 20:20
... Results
10
Voltage Average Applied To Motor
Motor Speed (Rad/S)
Motor Current (A)
4. Automatic Starter of a DC Motor
9
DC Motor With Bipolar PWM Excitation
DC Motor Model
Simulation Results
6
73.1
)(
)(
linetolineK
phaseK
e
e
−−
=
MOTOR ... / S C K
Motor Controller (PIC18F458 + 5AD’s + CAN Comm.)
14
Voltage Average Applied To Motor
MOTOR SPEED (rad/s)
Motor Current (A)
3. DC Motor with unipolar PWM excitation
7
CASCADE SPEED CONTROL ... single winding with dc motors, and are
the phase values for a BLDC motor. Brushless dc motors (BLDC) are usually 3 phase
synchronous motors used in a configuration to be treated as dc drives. Also...
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