Axis 670 Manuel d'instructions télécharger pdf (Page 44)

2'MmV

VM"SmsExtyid/

i.S8V

•

CH2

•

CHI :

/ : : :

r^-....:....:....

^iii

CH1=Position Out

CH2=Posttion In

•!•

\i :

1 '•

.:...:

,..:....!....

' : : .

: :

iiimi/

K thi itdmV KU ' Smstxtyid/ 1.58

Figure

21.

Figure 22.

11.

Iterate steps 9 and 10 above until the

waveform is critically damped as shown in

figure

23.

Figure 23.

:CM2'

•

• • •

•

. I

• • • •

CH1

/ ••

-./..:.

•

'....:....:....:

CH1=PositionOut •

CH2=Position In

li ;

(•

/ : ...: •

' ; : :

!•••••

t .

. ... I .... .

200mV \i ai2 200mV VM SmsExVIO/ 1.58V

12.

To increase the speed of the system

(decrease the step response time) still

further, slowly tum R28 CW a few more

tums,

then re-tweak the other trimpots as

before to make the waveform look critically damped again. This can be done until the

desired small-angle step response time is obtained or the system begins to resonate or "ring".

this

ringing occurs, immediately tum back the trimpots starting v^th R28, then R25 and

then R59 until this stops. Turn each trimpot CCW gradually and evenly, similar to when the

loop gain was increased. Do not operate the system with the loop gain tumed up so high that

the servo rings anywhere in the field. Experience with the system will determine how fast it

should be tuned. Call Cambridge Technology Inc. for more information on this subject.

Refer to

figure

24 for proper tuning after iterating through the above steps.

1 2 ... 39 40 41 42 43 44 45 46 47 48 49 ... 67 68

Commentaires sur ces manuels

Pas de commentaire

Axis 670 Manuel d'instructions Page 44

Commentaires sur ces manuels

Produits connexes et manuels pour Imprimer et scanner Axis 670