Skip to the content

Buyer's guide

Innovation & industry

For the latest features and products for those interested in innovation and industry, see our special sections on:

Cryogenics

Fusion

Microscopy

Optics

Sensors

Software

Vacuum

Webinar series

COMSOL

Fluid structure interaction simulation with COMSOL

Register now for this free webinar

Penny-Sized Miniature Linear Piezo Motor Stage Replaces Lead Screw Assemblies Dec 3, 2007


View full-size image

PI's patented P-652 sub-miniature piezo motor linear stage is a penny-sized precision positioning system providing high speed and sub-micrometer resolution.

A video showing the function of the piezoelectric mini motor is available at:

Piezo Motor Video

The stage is designed to replace classical drive elements like rotary motor / leadscrew assemblies or electromagnetic linear motors in micro-systems.

Measuring only 9.0x6.5x2.4mm, the P-652 stage offers a travel range of 3.2mm and can move at velocities of up to 80 mm/sec--almost 10 times faster than other screw-driven micro-stages. Sub-micron resolution, combined with a high holding force of 20 grams, are state-of-the-art figures for a stage of these minute dimensions.

White Paper on Piezoelectric Ultrasonic Micro Motors

Simple Design
The P-652 has the simplest possible design, comprising only only 4 parts -- an ultrasonic piezoelectric resonator and two lateral sliders pressed against it by a spring doubling as moving carriage. The load to be moved is mounted directly on the carriage and moved by a force of up to 110 mN. The P-652 requires only these 4 parts, unlike conventional electric motors. Highly integrated electronics are available for 3 V control.

No Leadscrews - no Backlash
Because no leadscrews or other rotating parts are involved P-652 systems are absolutely backlash free. Due to its ultrasonic motor design, power consumption in steady state conditions is zero and no external brake is necessary to maintain a stable position.

Datasheet: P-652 Micro Piezo Motor Stage

Typical Applications
P-652-series PILine® piezoelectric ultrasonic motor systems are ideal for OEM applications where quantities are high, space is limited and masses are small. The systems were optimized for moving small objects such as fibers, optomechanical components, micro-medical devices, micromechanics (or MEMS) fast and precisely.

Features & Advantages
* Cost-Effective, High-Volume-Production Drive
* Resolution: Better than 0.1 microns
* Stage dimensions: 9.0x6.5x2.4 mm
* Velocity: Up to 80 mm/sec
* Holding Force: > 0.2 N
* Stroke: 3.2 mm (customizable)
* Operating current: 55 mA
* Operating voltage (driver electronics): 2.8 3.2V
* Input power (at rest): zero

About PILine® Linear Motors
PILine® linear piezomotors are based on a novel, patented ultrasonic drive developed by PI. At the heart of the system is a rectangular monolithic piezoceramic plate (the stator), segmented on one side by two electrodes. Depending on the desired direction of motion, the left or right electrode of the piezoceramic plate is excited to produce high-frequency eigenmode oscillations of tens to hundreds of kilohertz. PILine® motors are vacuum compatible, non-magnetic and self-locking. They are also more efficient, faster and smaller than conventional motors.

About PI
PI is a leading manufacturer of nanopositioning and precision motion-control equipment for photonics, nanotechnology, semiconductor and life science applications. PI has been developing and manufacturing standard & custom precision products with piezoelectric and electromagnetic drives for 35+ years. The company has been ISO 9001 certified since 1994 and provides innovative, high-quality solutions for OEM and research. PI is present worldwide with eight subsidiaries and total staff of 400+.

 

More products from this company