Product category:
Electric Linear Actuators
News Release from: PI (Physik Instrumente) | Subject: M-663, M-664 and M-682 linear stages
Edited by the Engineeringtalk Editorial
Team on 19 October 2007
Linear stages provide compact solution
A direct metrology linear encoder with 0.1um resolution provides high linearity and positioning accuracy.
PI has released the M-663, M-664 and M-682 ultrasonic piezo-motor-driven linear stages, providing travel ranges of up to 50mm in a compact package For improved guiding accuracy, crossed roller bearings are mounted on precision-ground aluminium profiles
This article was originally published on Engineeringtalk on 26 Nov 2002 at 8.00am (UK)
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A direct metrology linear encoder with 0.1um resolution provides high linearity and positioning accuracy.
The integrated ceramic linear motors can generate push/pull forces up to 7N at speeds of up to 400mm/s.
The ultrasonic piezo linear motor drive is based on a compact standing-wave PZT ceramic element.
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.
An alumina friction tip (pusher) attached to the plate moves along an inclined linear path at the eigenmode frequency.
For optimum performance the highly specialised C-886 motion controller is available.
This sophisticated controller also integrates the drive electronics.
A number of special features, including dynamic parameter switching for an optimised high-speed motion and settling behaviour, take into account the motion characteristics typical of piezomotors.
The broad-band encoder input (35MHz) supports the high accelerations and velocities intrinsic to the PILine piezo motors. Request a free brochure from PI (Physik Instrumente) ...
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