abb sace protection and control devices
Open distributed automation and control with iec 61499.pdf
Ngày tải lên :
20/08/2012, 11:15
... OPEN DISTRIBUTED AUTOMATION AND CONTROL WITH IEC 61499
JHC/2001-04-03 p. 18
Open Distributed Automation and Control
with IEC 61499
Open Distributed Automation and Control
with IEC 61499
ã Background
ã ... Distributed Automation and Control
with IEC 61499
Open Distributed Automation and Control
with IEC 61499
ã Background
ã Architecture
ã Object Models
ã Software Tool Requirements
ã Status and Future
OPEN ... #1
Simulation
Machine Control Machine Control
OPEN DISTRIBUTED AUTOMATION AND CONTROL WITH IEC 61499
JHC/2001-04-03 p. 13
Event and Data Interfaces
Event and Data Interfaces
Data outputsData...
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Mechanisms and Mechanical Devices Sourcebook - Chapter 3
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22/10/2012, 14:26
... hardened steel stop on the
clutch control shaft. A spiral spring then impels the
clutch control shaft to rotate clockwise. That movement
throws out the clutch and applies the brake. The initial
movement ... the raising and lowering of the transport is accomplished by a cam. The shafts,
F, E,
and D are positioned by the frame of the machine. Special bell cranks support the transport
and are interconnected ... those that keep both of the operator’s hands
occupied on controls away from the work area to shields that completely enclose the
work in progress on the machine and prevent machine operation unless...
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Mechanisms and Mechanical Devices Sourcebook - Chapter 4
Ngày tải lên :
22/10/2012, 14:26
... every lobe on gear
4, and T
3
/T
4
= L
3
/L
4
= 2/3, where T
3
and
T
4
are the numbers of teeth on gears 3
and 4. T
1
and T
2
will denote the numbers
of teeth on gears
1 and 2.
Next, select the ... number of lobes
L
3
and L
4
on
the gears
3 and 4. In the drawings, L
3
= 2
and
L
4
= 3. Any two lobes on the two
gears (i.e., any two lobes of which one is
on one gear and the other on the ... near standstill.
In the disengaged position, the angu-
lar velocity ratio between the output and
input shafts (the “gear” ratio) is entirely
dependent upon the design angles
α
and
β and independent...
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Mechanisms and Mechanical Devices Sourcebook - Chapter 5
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22/10/2012, 14:26
... 138
134
TWELVE EXPANDING AND CONTRACTING DEVICES
Parallel bars, telescoping slides, and other devices
that can spark answers to many design problems.
Fig. 1
Figs. 1 and 2 Expanding grilles are ... turns.
Dynamic and static balancing is simplified
when an expanding wheel is attached to a
nonexpanding main wheel. As a pulley, an
expanding wheel can have a steel band
fastened to only one section and ... and 4; two-jointed inter-
mediate links: links 5 and 7; three jointed
intermediate links: link 6.
The input motions to be added are a and b; their sum s is equal to c
1
a + c
2
b, where c
1
and...
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Mechanisms and Mechanical Devices Sourcebook - Chapter 6
Ngày tải lên :
22/10/2012, 14:26
... ARRANGEMENTS
Differential, duplex, and other types of
screws can provide slow and fast feeds,
minute adjustments, and strong clamping action.
Rapid and slow feed. With left- and right-hand
threads, slide motion ... non-sliding, non-
rolling radial and axial support without
the need for lubrication. The design com-
bines high radial and axial stiffness with
a relatively low and controlled angular
stiffness. ... and neg-
ligible hysteresis characteristics. The
bearing is radiation-resistant and can be
used in high vacuum conditions or in
environments where there is dirt and
contamination.
185
TAUT BANDS...
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Mechanisms and Mechanical Devices Sourcebook - Chapter 7
Ngày tải lên :
22/10/2012, 14:26
... conveying, and elevating.
STANDARD ROLLER CHAIN—FOR POWER TRANSMISSION AND CONVEYING
SINGLE WIDTH—Sizes
5
⁄
8
in and smaller have a spring-clip connect-
ing link; those
3
⁄
4
in and larger ... input and output of the simple windlass. Control and output ends of the mul-
titurn bands are both connected to gears mounted concentrically with the drum
axis.
When the servomotor rotates the control ... cycloidal is considered to be the
best standard cam contour because of its
low dynamic loads and low shock and
vibration characteristics. One reason for
these outstanding attributes is that sud-
den...
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Mechanisms and Mechanical Devices Sourcebook - Chapter 8
Ngày tải lên :
22/10/2012, 14:26
... motor com-
parable in size and power to those used in
standard reel-to-reel recorders, and a
large bi-peripheral flywheel and sturdy
capstan that reduces wow and flutter and
drives the tape. A patent ... manufac-
turing and alignment and (2) thermal and
vibrational changes in the sizes and posi-
tions of the meshing components. One of
the benefits is a reduction of gear-tooth-
contact noise and vibration. ... models while thin rubber
bands and pulleys are employed in con-
ventional portable recorders.
Take-up and rewind. In the new tape
drive system, the flywheel drives the take-
up and rewind spindle....
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Mechanisms and Mechanical Devices Sourcebook - Chapter 9
Ngày tải lên :
22/10/2012, 14:26
... requirements of
MIL-E-5400, class 3 and MILK-3926
specifications.
Applications were seen in counter and
reset switches and controls for machines
and machine tools, radar systems, and
precision potentiometers.
Eight-Joint ... Page 317
336
LINKAGES FOR BAND CLUTCHES
AND BRAKES
Fig. 1 An outside band
clutch operated by a roller
and cone.
Fig. 2 An outside band
clutch made as two half
wrap bands with an interme-
diate ... faster.
Edges of the clutch bands carry the
entire load, and there is also a compound
action of one band upon another. As the
torque builds up, each band pushes down
on the band beneath it, so each...
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Mechanisms and Mechanical Devices Sourcebook - Chapter 10
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22/10/2012, 14:26
... two separate con-
trollers and actuators. The first controls
the in-feed speed and tension of the
paper stock, and the second controls the
wind-up.
The in-feed is controlled by maintain-
ing ... that is sound
and slip-free. An automatic, constant-
350
Speed and Tension Control (continued)
Fig 4 Floating rolls are direct indicators of speed and tension in the paper web. Controller-
actuators ... movements actuate conveyor control mechanisms.
Sclater Chapter 10 5/3/01 1:07 PM Page 350
tension winding control and a secondary
indicator initiate the control action.
The control system shown in...
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Mechanisms and Mechanical Devices Sourcebook - Chapter 11
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22/10/2012, 14:26
... single-gland type.
Automatic wear control compensates for normal wear and
maintains volumetric efficiency. This pump will handle 5 to
300 gph without churning or foaming. It needs no lubrication
and ... POWER
Cartridge-actuated devices generate a punch that cuts cable and pipe,
shears bolts for fast release, and provides emergency thrust.
Sclater Chapter 11 5/3/01 1:17 PM Page 402
Fig. 1 Automatic weighing and ... screws.
398
PHOTOELECTRIC CONTROLS
Typical applications are presented for reducing production costs and increasing
operator safeguards by precisely and automatically controlling the feed, transfer,...
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Mechanisms and Mechanical Devices Sourcebook - Chapter 13
Ngày tải lên :
22/10/2012, 14:26
...
ψ
13
and
ψ
12
. This establishes points A′
2
, A′
3
and
A′
4
, but here A′
3
and A′
4
coincide because of symmetry of A
3
and A
4
about A
0
B
0
.
4. Draw lines
A
1
A′
2
and A
1
A′
4
, and the ... example, in Fig. 1 two angular motions,
φ
12
and
φ
13
, must be synchronized with two others,
ψ
12
and
ψ
13
,
about the given pivot points
A
0
and B
0
and the given crank length
A
0
A. This means ...
ψ
13
, and
ψ
14
, using
freely chosen pivot points
A
0
and B
0
. In this case, crank length
A
0
A as well as B
0
B is to be determined, and the procedure is:
1. Locate pivot points
A
0
and B
0
on...
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Mechanisms and Mechanical Devices Sourcebook - Chapter 14
Ngày tải lên :
22/10/2012, 14:26
... capability and verifying commercial
demand. Initially ADI built these devices by interleaving, com-
bining, and customizing its internal manufacturing processes to
produce the micromechanical devices ... taller stators and rotor seg-
ments have been made by LIGA techniques to overcome this
drawback. (The abbreviation LIGA stands for the German words
for lithography, electroplating, and molding-—Lithographie,
Galvanoformung, ... organic and freeform shapes. Consequently, commercial
software producers offer 3D hybrid surface and solid-modeling
suites that integrate 2D drafting and 3D wireframe with 3D surface
and 3D solid...
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Mechanisms and Mechanical Devices Sourcebook - Chapter 15
Ngày tải lên :
22/10/2012, 14:26
... Technologies Group, Radford, VA
ã Ledex Actuation Products, TRW Control Systems, Vandalia OH
ã Sandia National Laboratories, Sandia Corporation, Albuquerque, NM
ã SolidWorks Corporation, Concord, ... Data
Sclater, Neil.
Mechanisms and mechanical devices sourcebook / Neil Sclater, Nicholas P. Chironis.—
3rd ed.
p. cm.
Rev. ed of: Mechanisms & mechanical devices sourcebook / [edited by] ... applications beyond
NASA’s immediate objectives in space science and requirements for specialized equip-
ment. The names of the scientist/inventors and the NASA facilities where the work was
performed have...
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Mechanisms and Mechanical Devices Sourcebook - Chapter 12
Ngày tải lên :
22/10/2012, 14:26
... left-handed
threads,
ã An eye on a shank with external right-
handed threads, and
ã A flanged collar with left-handed external
threads to mate with the shank of the first-
mentioned eye, and right-handed ... is bulky and diffi-
cult to use, requires periodic mainte-
nance, and poses the threat of leakage of
hydraulic fluid, which can contaminate
the clean room.
The actuator rests on a stand and
imparts ... is pushed upward an additional 15º, locking the handle
cam and the slide. In step 6, the handle is rotated an additional
30º, forcing the box and the mating spring-loaded electrical con-
nectors...
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Mechanisms and Mechanical Devices Sourcebook - Chapter 16
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22/10/2012, 14:27
...
angular-momentum-balanced, robot
48
ball -and- cone
250
ball -and- disk, and
251
ball -and- screw
5 12
bearings and roller
117
belt
12 224 257
belt -and- chain, variable speed
224
cam for ...
158
ring gear and slider
450
ring and slider, Jenson’s
450
robot
34
rocker arm and disk
123
roller-dwell
119
rotary, short-dwell
112
rotary-to-reciprocating motion and dwell
116 ...
disk, and
249
double
249
roller, and
249
speed
318
spherical
249
ball -and- cone
250
crank
167
disk, with
249
slide oscillator
168
tilting-ball
249
swivel-gear
282
tension controlling...
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