Surge impulse piezoelectric motor PIA

linearceramic

Characteristics: Adjustable impact parameters like energy/ac­ce­le­ra­tion/de­flec­tion/ E 10.000 g, stroke up to > 100 µm High repeatability of the impact parameters, precise time behavior Pulse energies in the Joule range Variable collision- and repetition rate Shortest expansion times in the µs's Pulse width at about 10 µs Precise triggering in the µs-range Contact between actuator and specimen before impulse Working principle of PIA Shock Generators When the piezo is charged quickly (short pulse), then the axial compression stress in the piezo ceramic instantaneously jumps to a large value. The blocking pressure is established, resulting in high accelerations with high strain rates. As a result the piezo-rod expands in an accelerated manner. The piezo stack can build up a propagating pressure front in a coupled body. Therefore the piezo is an “active rod” which generates mechanical shocks when driven by electrical power pulses.