19.08.2013 Views

User Manual 08/2003 Edition

User Manual 08/2003 Edition

User Manual 08/2003 Edition

SHOW MORE
SHOW LESS

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

02.99<br />

5.5.6 Jerk limiting<br />

Description<br />

Applications<br />

Parameters<br />

(refer to Chapter<br />

5.6.2)<br />

Siemens AG <strong>2003</strong> All rights reserved<br />

SIMODRIVE POSMO A <strong>User</strong> <strong>Manual</strong> (POS1) – <strong>08</strong>.03 <strong>Edition</strong><br />

5.5 SIMODRIVE POSMO A functions<br />

Acceleration and deceleration are step–like if jerk limiting is not used.<br />

Using jerk limiting, a ramp–type increase can be parameterized for both<br />

quantities, so that approach and braking are ”smooth” (jerk–limited).<br />

Jerk limiting can be used, e.g. for positioning tasks using liquids or generally<br />

to reduce the mechanical stressing on an axis.<br />

v<br />

a<br />

r<br />

P23 = T R [s] =<br />

P22<br />

Fig. 5-12 Jerk limiting<br />

P23<br />

a [mm/s 2 ]<br />

r [mm/s 3 ]<br />

P23 Jerk time constant<br />

P22 Maximum acceleration<br />

5 Description of the Functions<br />

P22<br />

a: Acceleration<br />

r: Jerk<br />

t: Time<br />

TR: Jerk time<br />

v: Velocity<br />

t<br />

t<br />

t<br />

5-163<br />

5

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!