The center plate of the switch behaves as a rigid body and is modeled using 'Rigid Plate' component from Architect Parts library. Rectangular and quadrilateral plates have been used to define the geometry of the plate and the tabs. The four dimples are also modeled using rigid plates and are labeled as 'Dimple TL', 'Dimple TR', 'Dimple BL' and 'Dimple BR'. The electrode beneath the center plate is modeled using 'Electrode' component from the library. The folded beams are modeled using a combination of 'L-Beam' and 'Beam' components. A 'Rigid Plate Damper' is used to model the effect of squeezed film damping.
Figure 3 shows the result of a transient simulation in Architect. The figure plots the soft landing waveform (a pulse with a magnitude of 190 volts and 500 nanoseconds rise and fall time) and the Z displacement of the plate center versus time. You can see the plate makes contact at around 30 microseconds. The plate remains in the displaced position till 150 microseconds. As the voltage is reduced to 0 Volts, the plate is released and bounces back. You can see that the plate bounce dies out over the next 450 microseconds due to damping. A fully coupled electro-mechanical transient simulation with contact and damping effects takes just 1 minuteto run on a 2GHz laptop.
Nombre: Lenny D. Ramirez C.
Dirección http http://info.coventor.com/memsahead/bid/34293/Modeling-and-Simulation-of-an-RF-MEMS-Switch-Bouncing
Ver blogg: http://lennyramirez-crf2.blogspot.com/