universal motor speed control circuit diagram
Tài liệu Mechatronics DC Motor / Tachometer Closed-Loop Speed Control System ppt
Ngày tải lên :
25/01/2014, 13:20
...
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 ... 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 ... power amplifier. Motor speed is measured using
an analog tachometer.
Figure 2. Physical System
Mechatronics Kevin Craig
DC Motor / Tachometer Closed-Loop Speed Control System 5
...
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Tài liệu Speed Control SPC GAS SPRINGS, cushioned pptx
Ngày tải lên :
22/01/2014, 02:20
...
Overview of Gas Springs
2
.
21369
.
2007
.
1
Speed Control
TM
ô
SPC Gas Springs,
cushioned 2486.12.
FIBRO SPC Gas Springs Speed Control
TM
ô are designed to
reduce or eliminate the ... caused by the increased return travel speed
in high speed presses (link drive presses).
SPC Gas Springs feature an integral return travel delay which
reduces the speed of the gas spring to 0.4 m/s ... 2
.
21370
.
2007
.
1
3
Speed Control
TM
ô
SPC Gas Springs,
2486.12. cushioned
subject to alterations
Force in daN at Piston...
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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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báo cáo hóa học:" Scan speed control for tapping mode SPM" docx
Ngày tải lên :
21/06/2014, 17:20
... the step height equal to
25 nm. At a constant speed of 30 àm/s (a), with a dynamic control (b), and with a
dynamic control and at a variable speed (c).
Figure 2. Comparative line traces for ... K
τ
. As a result, the speed of a closed-loop control system (that is,
without loss of surface) is determined by the time constant
0 0
i
G K
τ
. Feedback speed,
the speed of the actuator, ... dynamic controller on ‘parachuting’ regions. Furthermore,
we propose to use variable scan speed on ‘upward step’ regions, with the speed
determined by the error signal of the closed-loop control. ...
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Design and Implementation of a Three-Phase Induction Motor Control Scheme
Ngày tải lên :
27/10/2013, 23:15
...
3.1. The basic control format
In essence, we are endeavoring to design a controller that can vary the torque induced in
the rotor of the motor. To do this, the induction motor controller will ... for an induction
motor
An induction motor is an asynchronous AC (alternating current) motor. The least
expensive and most widely used induction motor is the squirrel cage motor. The major ... 6.10. The speed response of the control system where the proportional gain of the speed
controller is increased
As you can see, the transient response is faster as it follows the speed command...
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Motor control sensor feedback circuits
Ngày tải lên :
03/01/2014, 18:55
... stable, reliable and cost-effective
control system.
Further details on motor control circuits and sensors
are provided in several books, including Motor Control
Electronics” (10). In addition, ... PICmicro
đ
microcontroller. Figure 13
provides a block diagram of a sensorless control for a
Brushless Direct Current (BLDC) motor that uses
discrete comparator circuits.
FIGURE 13: Block Diagram of ... conditions that
may damage the motor. As an example, Figure 1 pro-
vides a block diagram of a DC motor control system to
show the sensor feedback provided for a typical motor
control.
A list of the sensors...
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DC bus control of variable speed wind turbine using a buck boost converter
Ngày tải lên :
03/01/2014, 19:15
... modes of buck boost converter
2
Unlike constant -speed control, a variable -speed control can
adjust the speed of the turbine as the wind speed changes, so
as to operate at the peak of the ... ON. A simple linear circuit
can represent each of the two states where the switches in the
circuit are replaced by their equivalent circuit during each
state. The circuit diagram for each of ... proposed MPPT control method.
Fig.7: Wind turbine output power without MPPT control method
for low wind speed.
Fig.8: Wind turbine output power with MPPT control method
for low wind speed. ...
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New control strategy for variable speed wind turbine with DC DC converters
Ngày tải lên :
03/01/2014, 19:15
... available at
various wind speeds, two different control algorithms are
normally applied to the VSWT: pitch angle control and
speed (torque) control.
The pitch control algorithm is used to ...
converter
LOAD
P electSpeed Duty ratio
VSWT Aero dynamical / Mechanical unit
MPPT
LPPT
Operator
Controller
speed
d
Control
strategy
VSWT Control unit
VSWT Electrical unit
Fig. 1. Control concept ... two optimum wind turbines power/torque
versus speed characteristics. Two control loops: inner feed
forward current control loop and outer voltage control
closed loop are applied for the non-inverting...
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