en.Wedoany.com Reported - PI (Physik Instrumente) has launched the ultra-compact XY scanner and positioner U-723, featuring an integrated miniature direct-drive ultrasonic piezoelectric ceramic motor (also available in a single-axis version). The patented drive provides high-resolution smooth motion, and the motor self-locks after reaching the target position without requiring continuous power, maintaining high long-term stability with zero heat generation.
The U-723 offers a travel range of 22x22mm per axis, with a footprint of only 42x42mm and a height of 21mm. The direct-drive design has no rotating parts, providing excellent start-stop dynamics and stabilization times in the millisecond range. With a drive frequency exceeding 100kHz, the motor operates quietly. Displacement is generated in continuous sub-nanometer increments, with a dynamic range from 1 micrometer/second to 200 mm/second, ensuring smooth motion. The design enables self-locking when power is off, generates no magnetic field, and has no gear backlash, making it suitable for sensitive sensors, optics, and medical devices.
Built-in optical linear encoders provide position feedback with 10 nm resolution, supporting closed-loop operation. PI also offers stages with higher resolution. Due to the low power consumption of the ultrasonic motor, this product can be integrated into mobile measurement and medical devices, and a vacuum-compatible version is available.
PI offers the C-867 and C-877 series ultrasonic motion controllers, including benchtop, rack-mount, and OEM configurations. An ASIC chip with integrated motion control algorithms is also available. The software package includes LabVIEW drivers and example programs, Windows and Linux dynamic libraries, and MATLAB. Interfaces include TCP/IP, USB, RS-232, and analog interfaces.
With over 40 years of engineering experience, PI can collaborate with customers to provide products that meet application requirements, and can quickly modify existing designs or provide fully customized OEM components.
PI is a manufacturer of air bearing stages, piezoelectric solutions, precision motion control equipment, and six-axis parallel kinematics, serving the semiconductor, photonics, bio-nanotechnology, and medical engineering sectors. The company has been ISO 9001 certified since 1994, with 15 subsidiaries and 1,900 employees worldwide.
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