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- MICRO-CONTROLE / Spectra-Physics
- NanoPositioning Piezo Translators
NanoPositioning Piezo Translators
1 /2Pages
NanoPositioning Piezo Translators
1 /2Pages
Catalog excerpts
The NPA Series Piezo Translators are ideally suited for integration into custom motion devices. They provide nanometer resolution, up to 100 ìm travel range and micro-second response time in a very compact housing. NPA translators are equipped with a highly reliable, multi-layer, low-voltage, piezoelectric transducer (PZT) stack protected by a cylindrical stainless steel housing. The high internal mechanical preload simplifies handling and allows for high load, dynamic applications. NPA series translators can generate large forces up to 1000 N which makes them particularly useful for machine tools, active vibration isolation or adaptive mechanics. Their small size and high resonant frequency are suitable for scanning microscopy, laser tuning and beam steering, patch clamping or micro lithography applications. NPA series actuators are available as open-loop (no position feedback) or closed-loop devices with integrated position feedback. In open-loop, the resolution is only limited by the noise of the control electronics, but repeatability and stability are compromised due to the hysteresis and creep of the piezo ceramic material. The closed-loop systems (model number ending in SG) feature high resolution strain-gauge position sensors for highly accurate and repeatable motion. Also, the position feedback compensates for actuator creep. The assembly is done as a full Wheatstone bridge and is temperature insensitive. The closed-loop devices can be used in either open or closed-loop control. Fastening is accomplished by M3-threads at the top and the base of the translator. Like all piezo devices, moment loads and side forces should be avoided. Spanner flats are provided and should be used when securing screws. Phone: 1-800-222-6440 • Fax: 1-949-253-1680 • Email: [email protected] • Web: newport.com NanoPositioning Piezo Translators • Compact piezoelectric translators • Up to 100 ìm travel range • Sub-nm resolution • Integrates easily into custom motion systems • Optional strain-gauge position feedback NPA Series 1) Typical value measured with NPC3 and NPC3SG, (-20 V to +130 VDC range). 2) Applies to devices with ending SG in closed-loop control only. 3) Equal to rms noise value measured with NPC3 and NPC3SG controller. Specifications NPA25 NPA25SG NPA50 NPA50SG NPA100 NPA100SG Open loop travel range (± 10%), (ìm) (1) 25 50 100 Closed loop travel range (ìm) (1, 2) 20 40 80 Open loop resolution (nm) (3) 0.05 0.1 0.2 Closed loop resolution (nm) (2) 0.5 1.0 2.0 Typ. Repeatability (nm) (2) 16 20 28 Capacitance (±20%) (ìF) 2.5 5.4 9.0 Resonant frequency, unloaded (Hz) 12,000 8,000 3,000 Axial stiffness (N/ìm) 40 20 10 Push/Pull load capacity (N) 1000/150 1000/150 1000/150
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PHONE EMAIL Belgium +32-(0)0800-11 257 [email protected] China +86-10-6267-0065 [email protected] France +33-(0)1-60-91-68-68 [email protected] Japan +81-3-3794-5511 [email protected] Taiwan +886 -(0)2-2508-4977 [email protected] PHONE EMAIL Mtn. View, USA +1-800-775-5273 [email protected] Netherlands +31-(0)30 6592111 [email protected] United Kingdom +44-1235-432-710 [email protected] Germany / Austria / Switzerland +49-(0)6151-708-0 [email protected] Newport Corporation, Irvine, California; Mountain View, California; Tucson, Arizona; Evry and Beaune-La-Rolande,...
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