Feature

Compact linear stage with ultrasonic piezomotor

With the U-521, PI (Physik Instrumente) has added a compact linear stage to its portfolio with dimensions of 35 × 35 × 15mm, which allow integration even when space is limited.

03/05/2016 12:17:41

It reaches maximum velocities up to 200mm/s with a very dynamic start-stop behaviour and is suitable for travel ranges up to 18mm. Typical application fields can be found in industry and research, for example, automatic micromanipulation, positioning of samples or when adjusting optical components such as binoculars or camera lenses. Vacuum-compatible versions (to 10-6 hPa) are also available. Combinations without an adapter plate for multi-axis positioning tasks are possible as well.

The patented drive principle – oscillating piezoceramic actuators acting directly on a linear-guided runner – runs silently, and is self-locking. That means that no energy is consumed at rest, no heat to be dissipated, and the typical servo jitter is not an issue. The integrated direct-measuring optical linear encoder works at a resolution of 400nm or even 100nm; this means that the compact linear positioning stage can achieve minimum incremental motion of 2 or 0.3µm.

As solution supplier for drive technology and positioning systems, PI also has suitable linear positioning stages with magnetic direct drives in its portfolio for those applications that require continuous operation.

Written By Sophia Bell

Sophia Bell is the Group Editor of DPA, Connectivity, and PBSI. She joined the team in 2020 as Assistant Editor after achieving a First-Class Honours BA in English Literature and Film Studies from the University of East Anglia. In her current role, she leads the editorial strategy, driving digital growth and ensuring each title continues to deliver trusted, relevant insight for engineering and manufacturing professionals.