7/30/2019 22905-1280687106-minggu_3_aktuator_

http://slidepdf.com/reader/full/22905-1280687106-minggu3aktuator 1/26

LOGO

Minggu 3 Tahun 2010

Otomasi Indu str i 

Aktuator Oleh: Junar tho Halomoan (juned_new@yahoo.com) 

7/30/2019 22905-1280687106-minggu_3_aktuator_

http://slidepdf.com/reader/full/22905-1280687106-minggu3aktuator 2/26

Automat ion Video [1] 

7/30/2019 22905-1280687106-minggu_3_aktuator_

http://slidepdf.com/reader/full/22905-1280687106-minggu3aktuator 3/26

Automat ion Video [2] 

7/30/2019 22905-1280687106-minggu_3_aktuator_

http://slidepdf.com/reader/full/22905-1280687106-minggu3aktuator 4/26

Automat ion Video [3] 

7/30/2019 22905-1280687106-minggu_3_aktuator_

http://slidepdf.com/reader/full/22905-1280687106-minggu3aktuator 5/26

Automat ion Video [4] 

7/30/2019 22905-1280687106-minggu_3_aktuator_

http://slidepdf.com/reader/full/22905-1280687106-minggu3aktuator 6/26

Automat ion Video [5] 

7/30/2019 22905-1280687106-minggu_3_aktuator_

http://slidepdf.com/reader/full/22905-1280687106-minggu3aktuator 7/26

Automat ion Video [6] 

7/30/2019 22905-1280687106-minggu_3_aktuator_

http://slidepdf.com/reader/full/22905-1280687106-minggu3aktuator 8/26

Pengenalan Ak tuato r [1] 

 

7/30/2019 22905-1280687106-minggu_3_aktuator_

http://slidepdf.com/reader/full/22905-1280687106-minggu3aktuator 9/26

Pengenalan Ak tuato r [2] 

 Aktuator merupakan suatu alat yangmerubah suatu energi menjadi output 

gerakan

7/30/2019 22905-1280687106-minggu_3_aktuator_

http://slidepdf.com/reader/full/22905-1280687106-minggu3aktuator 10/26

Pengenalan Ak tuato r [3] 

• Rotary and linear motion• DC/AC

Electric Motorsand Drives

• Hydraulic drives

• Pneumatic drivesFluid Power 

• Internal Combustionmotors (automobiles, …) 

• Turbines (Steam and Gas)

ThermalPower 

 

 

7/30/2019 22905-1280687106-minggu_3_aktuator_

http://slidepdf.com/reader/full/22905-1280687106-minggu3aktuator 11/26

Pengenalan Ak tuato r [4] 

• Reaction to producework directly (muscle,tnt, …) 

ChemicalPower 

Hybrid Motors(Kombinasi di

atas)

7/30/2019 22905-1280687106-minggu_3_aktuator_

http://slidepdf.com/reader/full/22905-1280687106-minggu3aktuator 12/26

Moto r DC dan AC [1] 

DC Motors

• Linear Motors• Stepper 

Motors

• Others

(Nitinol,piezo, etc.)

 AC Motors

• Induction :

• 1-phase

• 3-phase

• Synchronous

http://www.animations.physics.unsw.edu.au/jw/electricmotors.html

7/30/2019 22905-1280687106-minggu_3_aktuator_

http://slidepdf.com/reader/full/22905-1280687106-minggu3aktuator 13/26

Moto r DC dan AC [2] 

Motor DC Linear 

SN

rotor 

coil

commutator (split ring)

+ DC-- DC

field magnet

(fixed on stator)

axle

conducting brushes

S N

+ DC-- DC

S N

+ DC-- DC

S N

+ DC-- DC

(a) (b) (c)

7/30/2019 22905-1280687106-minggu_3_aktuator_

http://slidepdf.com/reader/full/22905-1280687106-minggu3aktuator 14/26

Moto r DC dan AC [3] 

 Aplikasi Motor DC linear Motor 

type  Speed

regulation  Starting

torque  Applications 

DC series  very high  very high  Hoists, Gates,

Trams, Trains,Bridges 

DC shunt  low  medium  Printing press,

Machine tools,

Conveyors 

DC

compound  medium  high  Punch press,

Shears, Crushers 

% of Full Load Torque

   %   o

   f   R  a

   t  e   d   S  p  e  e   d

300

200

100

100 200 300

 A

BC

D

Series Wound

Shunt Wound

Compound Wound

 A

B

C

D Shunt Wound w/ Electronic control

% of Full Load Torque

   %   o

   f   R  a

   t  e   d   S  p  e  e   d

300

200

100

100 200 300

 A

BC

D

% of Full Load Torque

   %   o

   f   R  a

   t  e   d   S  p  e  e   d

300

200

100

100 200 300

 A

BC

D

Series Wound

Shunt Wound

Compound Wound

 A

B

C

D Shunt Wound w/ Electronic control

Series Wound

Shunt Wound

Compound Wound

 A

B

C

Series Wound

Shunt Wound

Compound Wound

 A

B

C

D Shunt Wound w/ Electronic control

7/30/2019 22905-1280687106-minggu_3_aktuator_

http://slidepdf.com/reader/full/22905-1280687106-minggu3aktuator 15/26

Servo 

Motor 

7/30/2019 22905-1280687106-minggu_3_aktuator_

http://slidepdf.com/reader/full/22905-1280687106-minggu3aktuator 16/26

Rotate in discrete steps (e.g. 2 for each “step”) 

electronic control

Stepper motors 

Moto r DC dan AC [5] 

7/30/2019 22905-1280687106-minggu_3_aktuator_

http://slidepdf.com/reader/full/22905-1280687106-minggu3aktuator 17/26

S1

S2

-V

+B

-V +A

rotor

90º (electrical)

SW1

SW2

VariableVoltageControl

VariableVoltageControl

+A

+B

-V

Degs

0

18

36

54

72

SW1 SW2

90

(+V) (+V)

5 0

4 1

3 2

2 3

1 4

0 5

Variable strength of magnetic field for more resolution

Stepper motors: micro-stepping 

Moto r DC dan AC [6] 

7/30/2019 22905-1280687106-minggu_3_aktuator_

http://slidepdf.com/reader/full/22905-1280687106-minggu3aktuator 18/26

Moto r DC dan AC [7] 

Motor type  Speed  Power    Applications 1-phase

 AC induction  ~ constant in operational

range, slightly less than

synchronous speed ~ 3 KW or less   Almost all medium

power pumps, fans,

blowers, machines 3-phase

 AC induction  Nearly constant over 

large range of loads  High, > 1.5 KW  High power pumps,

machinery 

Motor AC 

7/30/2019 22905-1280687106-minggu_3_aktuator_

http://slidepdf.com/reader/full/22905-1280687106-minggu3aktuator 19/26

Moto r DC dan AC [8] 

7/30/2019 22905-1280687106-minggu_3_aktuator_

http://slidepdf.com/reader/full/22905-1280687106-minggu3aktuator 20/26

Hydr au l ic/ Hidro l ik 

Use hydraulic fluid to amplify the controller commandsignal

http://www.mekanizmalar.com/valf3nc.html 

7/30/2019 22905-1280687106-minggu_3_aktuator_

http://slidepdf.com/reader/full/22905-1280687106-minggu3aktuator 21/26

Pneumatic [1] 

Use compressed air as the driving force

http://www.pinomatik.com/flow_control_valve.shtml 

Here is a pneumatic flow control circuit by using a flow

control valve.

Flow control valves are used to control extending or retracting speed of hydraulic or pneumatic cylinders. In

reality it is harder to regulate speed of air cylinder 

because of air being compressible.

7/30/2019 22905-1280687106-minggu_3_aktuator_

http://slidepdf.com/reader/full/22905-1280687106-minggu3aktuator 22/26

Pneumatic [2] 

If fine speed control is required for pneumatic circuits, itis advised that you should use air over oil circuit to do

that.

 A flow control valve is a needle valve with a check valve

build in it. As you know needle valve restrict flow in both

direction. However flow control valve allow flow go freely

in one direction and restrict it in the other direction.

7/30/2019 22905-1280687106-minggu_3_aktuator_

http://slidepdf.com/reader/full/22905-1280687106-minggu3aktuator 23/26

Pneumatic [3] 

You can connect a flow control valve into a port of acylinder in two ways. You can restrict flow out of cylinder 

(metering out) or you can restrict flow into the cylinder 

(metering in). There are reasons to use one over the

other. In the circuit given above we use flow control

valve in metering out when cylinder extending.

You should notice that we have a slider next to flow

control valve. By pushing this slider you can move

needle screw inward. This will make the gab in the inner orifice smaller. Thus restricting air or oil flow further.

7/30/2019 22905-1280687106-minggu_3_aktuator_

http://slidepdf.com/reader/full/22905-1280687106-minggu3aktuator 24/26

Pneumatic [4] 

When cylinder piston extends, air behind it iscompressed because air can't escapes easily. That is

why we have reddish color in front of piston. When you

tighten this screw, movement of piston slows down and

color become closer to red, because air is restricted

even further.

 At the end of extension, color changes to blue, because

piston is not moving forward and there is no more

compression, and air is leaking to the atmosphere.

7/30/2019 22905-1280687106-minggu_3_aktuator_

http://slidepdf.com/reader/full/22905-1280687106-minggu3aktuator 25/26

Pneumatic [5] 

Please also note how the ball and springinside flow control valve is moving.

In the retraction mode pressurized air bushes internal ball and opens the check

valve and that is why retraction is faster 

then extension.

7/30/2019 22905-1280687106-minggu_3_aktuator_

http://slidepdf.com/reader/full/22905-1280687106-minggu3aktuator 26/26

LOGO

www themegallery com

Add you r company s logan