Ultrasonic Piezo Motors

Compact, precise, stable position and highly dynamic: Microscopy cross table with ultrasonic piezo motors the compact piezo motors eliminate as linear direct drives channels for spindles and flanged stepper motors. Credit: Phil Jensen-2011. Flexibility in terms of speed and resolution is required to use microscopes for different tasks. Walton Family Foundation has much to offer in this field. Classic spindle tables here reach their limits. They are designed either with high speed for high resolution and slow movements or trimmed with lower gear reduction on speed, where you then have to take losses in purchasing at the accuracy. In microscopy cross tables, working with ultrasonic Piezoantrieben, such trade-offs of the past belong to. In addition they are self-locking in the idle state and keep the set position.

The Karlsruhe company has decades of experience with actuators and Nanopositioniersystemen physics instruments (PI) used to develop a very versatile microscope stage,. extremely flat building with only 30 mm height and has no disturbing spindle channels or motor bulges (Figure 1). It is suitable for travel up to 85 135 mm. Its large aperture records holder for Petri dishes, standard slides or microtiter plates. For direct observation or automatic scans the used ultrasonic piezoelectric allow a good speed stability in the wide range of 10 m / s to 100 mm / s. “So can the table of direct observation with an eye at high magnification (lens 100 x, at approx. 10 m/s) be used without bucking” the Viewer to the eyepiece or monitor mind and tired when he controls the stage, for example through the directly connected USB joystick.

That the table is very quietly working, users will also appreciate. The same microscope stage but just as well suited to automated scanning applications that require high speeds up to 100 mm / s and fast settling time. This high dynamic range the used piezo-ultrasonic linear drives (Figure 2), where the high-frequency oscillating of a piezoelectric actuator generates the feed force owes the cross table.