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Piezoelectric Inertia Actuators![]()
PIA13 13 mm Travel Range PIA50 50 mm Travel Range Application Idea Two PIAK10 Piezo Inertia Actuators can be used PIA25 25 mm Travel Range ![]() Please Wait
![]() Click for Details The control cable can be adjusted up to 110° for space-constrained applications. Features
Thorlabs' Piezoelectric Inertia Actuators provide high-resolution linear motion control with long translation ranges in compact packages. Each actuator can support loads up to 2.5 kg with typical movements of 20 nm and no backlash. The step size can be adjusted up to 30% to a maximum of approximately 30 nm using the KIM001 or KIM101 Controllers. However, due to the open-loop design, hysteresis, and application conditions, the achieved step size of the system can vary by up to 20%. An external feedback system will need to be used to overcome this variance. We also offer vacuum-compatible piezo inertia actuators. These actuators are self-locking when at rest and when there is no power supplied to the piezo, making them ideal for set-and-hold applications that require nanometer resolution and long-term alignment stability. Manual adjustments can be made using the knob on the adjuster screw, as long as the piezo is not actively translating the screw; the knob is also compatible with 5/64" (2.0 mm) hex keys. Powered by 10 mm long discrete piezo stacks, these actuators operate at speeds of up to 3.5 mm/minute. The design of the piezo motor, detailed below, will rotate the tip of the lead screw during translation. Mounting Options Required Controller ![]() Click to Enlarge Simplified Illustration Showing the Operation of an Inertia Piezo Actuator Piezoelectric Inertia "Slip-Stick" MotorA piezo stack mounted perpendicular to the lead screw axis actuates the screw via a design based on the system's inertia and coefficients of friction. Two decoupled arms, or jaws, are located on either side of the piezo. These arms extend across the top and bottom of the main lead screw, as illustrated in the diagram to the left. The piezo reacts to a custom sawtooth voltage waveform, causing it to expand or contract. The waveform is asymmetric, slowly ramping up to the specified voltage and then quickly dropping the voltage to zero on a nanosecond timescale. As shown in the bottom illustration to the left, the jaws will "stick" to the lead screw during the slow voltage ramp due to static friction, turning the screw similar to a person using their thumb and forefinger. The nanosecond voltage drop will cause the arms to "slip" due to the screws' inertia and the lower coefficient of dynamic friction, allowing the arms to return to their original position without undoing the rotation of the screw. This mechanism allows a single piezo element to translate a lead screw along its entire length. Due to a number of factors that include the application conditions, piezo hysteresis, component variance, and the axial load, the achieved step size will vary and is not repeatable. To help overcome this variance, an external feedback system will need to be used. Alternatively, a stepper motor actuator can also be substituted depending on the application.
Note: The KIM001 uses Kinesis software. The KIM101 is compatible with both Kinesis and our legacy APT software. Thorlabs offers two platforms to drive our wide range of motion controllers: our Kinesis® software package or the legacy APT™ (Advanced Positioning Technology) software package. Either package can be used to control devices in the Kinesis family, which covers a wide range of motion controllers ranging from small, low-powered, single-channel drivers (such as the K-Cubes™ and T-Cubes™) to high-power, multi-channel, modular 19" rack nanopositioning systems (the APT Rack System). The Kinesis Software features .NET controls which can be used by 3rd party developers working in the latest C#, Visual Basic, LabVIEW™, or any .NET compatible languages to create custom applications. Low-level DLL libraries are included for applications not expected to use the .NET framework. A Central Sequence Manager supports integration and synchronization of all Thorlabs motion control hardware. ![]() Kinesis GUI Screen ![]() APT GUI Screen Our legacy APT System Software platform offers ActiveX-based controls which can be used by 3rd party developers working on C#, Visual Basic, LabVIEW™, or any Active-X compatible languages to create custom applications and includes a simulator mode to assist in developing custom applications without requiring hardware. By providing these common software platforms, Thorlabs has ensured that users can easily mix and match any of the Kinesis and APT controllers in a single application, while only having to learn a single set of software tools. In this way, it is perfectly feasible to combine any of the controllers from single-axis to multi-axis systems and control all from a single, PC-based unified software interface. The software packages allow two methods of usage: graphical user interface (GUI) utilities for direct interaction with and control of the controllers 'out of the box', and a set of programming interfaces that allow custom-integrated positioning and alignment solutions to be easily programmed in the development language of choice. A range of video tutorials is available to help explain our APT system software. These tutorials provide an overview of the software and the APT Config utility. Additionally, a tutorial video is available to explain how to select simulator mode within the software, which allows the user to experiment with the software without a controller connected. Please select the APT Tutorials tab above to view these videos. SoftwareKinesis Version 1.14.25 The Kinesis Software Package, which includes a GUI for control of Thorlabs' Kinesis and APT™ system controllers. Also Available:
Thorlabs' Kinesis® software features new .NET controls which can be used by third-party developers working in the latest C#, Visual Basic, LabVIEW™, or any .NET compatible languages to create custom applications. C# For a collection of example projects that can be compiled and run to demonstrate the different ways in which developers can build on the Kinesis motion control libraries, click on the links below. Please note that a separate integrated development environment (IDE) (e.g., Microsoft Visual Studio) will be required to execute the Quick Start examples. The C# example projects can be executed using the included .NET controls in the Kinesis software package (see the Kinesis Software tab for details).
LabVIEW
These videos illustrate some of the basics of using the APT System Software from both a non-programming and a programming point of view. There are videos that illustrate usage of the supplied APT utilities that allow immediate control of the APT controllers out of the box. There are also a number of videos that explain the basics of programming custom software applications using Visual Basic, LabView and Visual C++. Watch the videos now to see what we mean.
To further assist programmers, a guide to programming the APT software in LabView is also available.
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Our compact PIA Series Piezoelectric Inertia Actuators are ideal for set-and-forget applications, particularly where space is limited. Their primary function is to set a relative position and hold; switching off power to the actuator will result in the same drift as a 1/4"-80 drive screw. These actuators are designed for use with our range of small positioning stages and optical mounts, and can provide nanometer resolution with long-term alignment stability. Manual adjustments can be made using the knob on the adjuster screw, as long as the piezo is not actively translating the screw; the knob is also compatible with 5/64" (2.0 mm) hex keys. The "slip-stick" nature of this device uses very short pulse widths and continuous stepping of the actuator will result in an audible noise at a typical level of 60 to 70 dB. ![]()
These compact K-Cube Controllers provide easy manual and PC control of our piezo inertia stages, actuators, and optic mounts. They feature adjustable voltage output from 85 V to 125 V. The top panel display screen enables operation as soon as the unit is turned on, without the need for connection to a PC. Alternatively, both controllers have USB connectivity that provides 'Plug-and-Play' PC-controlled operation with our Kinesis® software package (included). The KIM101 controller can also be operated with our legacy APT™ (Advanced Positioning Technology) software package. These units have small footprints and may be mounted directly to the optical table using the 1/4" (M6) counterbored slots in the base plate. Their compact size allows these controllers to be positioned close to the motorized system for added convenience when manually adjusting motor positions using the top panel controls. Tabletop operation also allows minimal drive cable lengths for easier cable management. Please note that these controllers do not ship with a power supply. The compatible KPS101 power supply is sold below. KIM001 Single-Channel Controller KIM101 Four-Channel Controller For more information, please see the full web presentation. Power Supply Options | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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