THORLABS PIA Series, Руководство пользователя

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Chapter 2 Overview
2.1 Introduction
A piezo inertia motor uses inertia and friction to move a slider. The actuator's linear
stepping is based on micro-rotation of the finely threaded drive screw circumference.
In each single step, a clockwise or counterclockwise rotation is created with a voltage
pulse to a piezo stack within the mechanism. This in turn creates a reciprocating linear
displacement of the screw tip. Using different rise and fall voltage rates depending on
the load, a typical step size of 20 nm can be achieved.
Thorlabs Piezo Inertia Actuators have been designed for use with our range of small
positioning stages and optical mounts, and feature a 9.5 mm (3/8”) mounting barrel.
The 13 mm (0.51”), 25 mm (0.98”) and 50 mm (1.97”) travel variants also feature a
3/8”-40 threaded mount option, whereas the 10 mm (0.39”) travel PIAK variant has a
1/4”-80 threaded mounting barrel, compatible with certain KM and KS series
kinematic mirror mounts. They deliver a 25 N pushing force, and are ideal for fine
positioning using the fine-threaded 1/4”-80 drive screw for transitional and angular
adjustment. These actuators maintain their position with no power applied and have
an adjustment knob for manual positioning.
When driven by the KIM101 Inertial Piezo Controller, the PIA series offers continuous
long term stepping as well as periodical position and hold mode.
Fig. 2.1 PIA Series Piezo Inertia Actuator - Features
110° (55° Left and Right)
Adjustment of Cable Exit
Manual Adjustment
Knob
1/4”-80 Threaded
Fine Drive Screw
9.5 mm (3/8”)
Mounting Barrel
Mounting Reference
Surface
Locking Ring
(included)
1/4”-80 Collar Nut
for Mechanical Stop