cable_hoist_2 - REVIEW NETWORK MODELING OF PHYSICAL SYSTEMS...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
REVIEW NETWORK MODELING OF PHYSICAL SYSTEMS E XAMPLE : VIBRATION IN A CABLE HOIST Bond graphs of the cable hoist models help to develop insight about how the electrical R-C filter affects the mechanical system dynamics. cable compliance elevator mass elevator weight "switch voltage" "resistor" "capacitor" v 1 v 2 v 3 Equivalent mechanical system: velocity source (equivalent to switch voltage) viscous damper (equivalent to electrical resistor) mass equivalent of capacitor spring (cable compliance) mass of elevator cage force source (elevator weight) Modeling and Simulation of Dynamic Systems Cable Hoist Example, continued page 1
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Resonant oscillation: due to out-of-phase motion of the two masses opposed by the spring Coniser the two massess and the spring in isolation No external forces —net momentum = zero —the masses move in opposite directions m 1 v 1 = –m 2 v 2 (subscripts as indicated in the diagram) v 2 = – m 1 m 2 v 1 Kinetic energy: E k * = m 1 v 1 2 2 + m 2 v 2 2 2 = m 1
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 6

cable_hoist_2 - REVIEW NETWORK MODELING OF PHYSICAL SYSTEMS...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online