ac motor speed control circuit tutorial
Tài liệu Mechatronics DC Motor / Tachometer Closed-Loop Speed Control System ppt
Ngày tải lên :
25/01/2014, 13:20
... 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 ... Mechatronics Kevin Craig
DC Motor / Tachometer Closed-Loop Speed Control System 21
Table 1. Specifications of the Honeywell 22VM51-020-5 DC Motor with Tachometer
Motor Characteristics Units Values ... Mechatronics Kevin Craig
DC Motor / Tachometer Closed-Loop Speed Control System 17
Mechatronics Kevin Craig
DC Motor / Tachometer Closed-Loop Speed Control System 29
9. Testing of the...
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Tài liệu Speed Control SPC GAS SPRINGS, cushioned pptx
Ngày tải lên :
22/01/2014, 02:20
...
.
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 sheet metal retainer bounce back
which is ... 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 ... a soft arrival for the sheet metal
retainer.
Benefits of the Speed Control
TM
ô SPC Gas Springs,
cushioned:
Prevents bounce back of sheet metal retainer.
Increased productivity through...
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Chapter 14 permanent magnet AC motor drives
Ngày tải lên :
16/02/2014, 18:54
... or nonsinusoidal back emf waveforms.
Machines with sinusoidal back emfs may be controlled so as to achieve nearly con-
stant torque; however, machines with a nonsinusoidal back emf may be less ... nominal operating speed of 200 rad/s (mechanical).
542 PERMANENT-MAGNET AC MOTOR DRIVES
The structure of the control algorithms determines the type of permanent-magnet
ac motor drive, of which ... structure of the controls
Figure 14.1-1. Permanent-magnet ac motor drive.
Electrical
System
Command
Signal
Power
Converter
Control
PM
AM
Mechanical
System
Sensors
566 PERMANENT-MAGNET AC MOTOR DRIVES
...
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báo cáo hóa học:" Scan speed control for tapping mode SPM" docx
Ngày tải lên :
21/06/2014, 17:20
... 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, is limited ...
control [1, 2].
Let us find the maximum scan speed without loss of surface. The transient response of
the loop control to a capacitive displacement sensor output (if the high-frequency pole ... line traces of the calibration grating with 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...
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ADVANCES IN MOTOR TORQUE CONTROL pdf
Ngày tải lên :
29/06/2014, 09:20
... frequency 1/τ
q
.is 20 (Hz) because reaction torque
Advances in Motor Torque Control
16
Sub motor
controller
Sub
motor
Rack & Pinion
Torque Sensor
Main motor
Electric
Signal Line
Planetary ... torque-
control motor capable of achieving faster and easier root canal preparation. Speed and
maximum torque levels are preselectable and constantly controlled by the TCM III control
unit. Speed ... electric motors without torque control and the electric torque control motors. (Fig 4)
Fig. 4. Torque control motor.
Theoretically, the torque control hand pieces (motors) take into consideration...
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AC motor doc
Ngày tải lên :
13/07/2014, 00:20
... (5 each)
5 x
2
EEM41 Three-phase asynchronous machines
Asynchronous motor
Experiment procedure:
z Start the "ActiveDrive/ActiveASMA" software
z Select "Automatic speed control& quot; ... asynchronous machines
Asynchronous motor
Circuit diagram "Connection & starting" (delta connection)
11
EEM41 Three-phase asynchronous machines
Asynchronous motor
Set-up "Reactive ... Three-phase asynchronous machines
Asynchronous motor
Experiment procedure:
z Start the "ActiveDrive/ActiveASMA" software
z Select "Automatic speed control& quot; operating mode...
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665
1
Design and Implementation of a Three-Phase Induction Motor Control Scheme
Ngày tải lên :
27/10/2013, 23:15
... detect the outputs of an induction motor, we
can use this motor controller to control an induction machine.
ã TMS320F243 DSP controller. This is manufactured by the Texas Instruments
Company ... nominal speed. However, outside the rated
speed operation, the flux has to be decreased like an inverse function of speed. By
weakening the rotor flux, the induction machine can reach speeds ... to develop a control strategy for the DSP controller that controls the
torque production within the induction machine. However, there is no great emphasis
placed on precise torque control.
...
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693
1
Tài liệu Matlab tutorial for systems and control theory pdf
Ngày tải lên :
12/12/2013, 07:15
... redefined by the user.
A matrix is written with a square bracket ‘[]’ with spaces separating adjacent columns and
semicolons separating adjacent rows. For example, consider the following assignments ... %Define a time vector with 201
equally-spaced points from 0 to 5 s.
w = logspace(-1,3,201); %Define a radian frequency vector
with 201 logarithmically-spaced
14
< less than
<= less than ... saved in an m-file.
To create an m-file using emacs, you can type from Athena prompt
athena% emacs filename.m &
or from within MATLAB
>> ! emacs filename.m &
Note that ‘!’ allows execution...
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Motor control sensor feedback circuits
Ngày tải lên :
03/01/2014, 18:55
... R
2
I
C
I
C
V
H-
V
H+
B
I
I
Printed Circuit Board
AN894
DS00894A-page 10 2003 Microchip Technology Inc.
BACK EMF CONTROL METHOD
The back electro-magnetic-force (EMF) or sensorless
motor control method obtains the speed ... signal-conditioning circuitry into a single
package.
In most motor control systems, several sensors are
used to provide feedback information on the motor.
These sensors are used in the control loop ... Management
Input
Microcontroller
Driver
Motor
Feedback
Torque
Speed
Direction
Current
Sensor
Sensors
* Speed
* Shaft Position
* Rotation Direction
PICmicro
đ
Motor Control Sensor Feedback Circuits
...
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