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Piezo-Composites-Actuators

Piezo-Composites-Actuators
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Piezocomposite actuators Piezos for high forces! Faster than resonant frequencies! variable lengths from millimeters to meter incredibly precise

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1. Piezocomposite actuators Piezocomposites are linear high load actuators designed in a discrete joining technology. Their advantages lay in high force generation and high stiffness. Another key advantage is the ability to use a variable selection of piezo-ceramics. This variety of thermal behavior, dynamics, voltage stress and Curie temperature allow piezocomposite actuators to be used in countless applications. Applications of piezocomposite actuators Piezocomposite actuators are used for: shaker active vibration damping shock wave generation material testing short impulse excitation...

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3. Piezoelectrical PiSha Shaker frequency range up to over 100 kHz, depending on the configuration of the shaker high accelerations up to 10’000 g amplitudes from microns to several hundred microns (depending on operating frequency) power modulation of several tens of kN (measured under blocking conditions – depending on shaker dimensioning, frequency of operation and installation conditions) compact dimensions of the piezoelectric structures down to the millimeter range high forces thermal management Operating principle of piezoeletric shakers Piezo shaker put the electrical excitation...

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Micro-Shaker: Ring type mounting arrangement by clamps or as seismic response type 1st resonance up to 100 kHz max. amplitude: ±5 μm (frequency dependant) max. force modulation up to 1000 Newton (when fixed with clamps) max. operating voltage: 150 V electrical supply: broadband amplifier LE150/100 EBW Image 7: different micro-shaker. size comparison with thimble Examples PiSha actuator type force modulation (blocking limit) [N] ±15‘000 with seismic mass * frequency dependant ** with seismic mass of 80 kg (176 lbs)

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4. Product range 4.1. Stack type actuators PSt series - stack type actuators without casing and without preload maximum force generation up to 50’000 N temperature range from -60°C up to over +200°C type further versions at www.piezo.eu PSt 1000/35/60 PSt series - stack type actuators with casing and with preload maximum force generation up to 50’000 N ideally suited for dynamic application due to high preload temperature range from -60°C up to over +200°C further versions at www.piezo.eu PSt 1000/35/150 VS45 4.2. Ring type actuators HPSt series - ring type actuators with casing and without...

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HPSt VS series - ring type actuators with casing and with preload free inside aperture with internal preload: ideally suited for optical applications with high dynamics also available as 500V version with diameters 10-5 or 15-8 further versions at www.piezo.eu HPSt 1000/35-25/80 VS45 for static and quasi-static applications max. current 8 mA low noise (~ 1mV at 0.47µF load) manual control of DC-offsets The SVR 1000 is available as a multi-channel and single channel amplifier. Due to its low voltage noise, it is excellent for positioning applications, especially for the positioning of...

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5. Theory Force In dynamic applications the generation of tensile and pressure forces are bound to the acceleration. For a sinu-soidal input signal the following formula applies: F = force m = moved mass a = acceleration ŝ = amplitude f = working frequency Frequencies With specially designed piezo shakers from piezosystem jena it is possible to work above the resonant frequency. The generated energy can reach several joules. Shock pulse The sock pulse (p) is the product of the mass which is moved into the shock front and the particle velocity. The shock pulse depends on the cross section of...

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