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20 mm Linear Stage with Piezoelectric Inertia Drive
20 mm Travel Range
PD1 Stages in XY Configuration with
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PD1(/M) Stage Features
Thorlabs' PD1(/M) Piezoelectric Inertia Drive Stage provides fast and stable piezo-controlled linear motion control in a compact package. This open-loop stage can support loads up to 3 kg with 3 mm/s speed and no backlash. The piezo inertia drive is self-locking when at rest and when there is no power supplied to the piezo, making these actuators ideal for set-and-hold applications that require micrometer resolution and long-term alignment stability.
Load Mounting Options
Stage Mounting Options
This torque is sufficient for stable mounting of the stage. If the stage is mounted on a surface with >5 µm flatness (as with most breadboards and optical tables), the velocity variation and pitch/yaw of the stage may still meet specifications if the mounting torque is decreased.
Set the stage configuration on the KIM101 controller to "PD(R)" before driving this stage. Use the joystick and menu button, select the "Set Stage" option and change it from "PIA" to "PD(R)", then restart the controller. The display will show "Stage is PD(R)" and the configuration will be changed to drive the PD1(/M) stage. See the KIM101 controller manual for additional front panel configuration details. The controller features four channels that can be operated individually or in pairs, making the controller ideal for applications that require multiple motorized axes. The driver has an internal sawtooth voltage signal generator capable of sending sub-millisecond pulses (steps) with controllable amplitudes from 85 V to 125 V. Each stage has an integrated 1.0 m cable; 1.5 m SMC extension cables (Item # PAA101) and male-to-male SMC adapters (Item # T5026) are also available. Please note that, due to the capacitance of the cables, the total length of the control cable should not exceed 2.5 m.
Simplified Illustration Showing the Operation of the Piezo Inertia Drive
The "stick-slip" cycle consists of a slow piezo expansion and a fast piezo contraction.
Piezoelectric Inertia "Stick-Slip" Motor
The piezo inertia motor consists of three main parts: a flexure-coupled piezo actuator, a friction element, and a slider (the moving platform). During the "stick" part of a cycle, the piezo slowly expands under the ramp voltage, pushing the friction element and the slider forward in unison. During the "slip" part, the drive voltage drops rapidly and the piezo element returns to its starting length, with the friction element "slipping" backward. The slider does not move due to its inertia and the low coefficient of kinetic friction between the friction element and the bottom surface of the slider. The graph to the right shows the piezo drive voltage during one "stick-slip" cycle.
Repeating this cycle produces continuous forward travel of the slider. For travel in the reverse direction, the opposite drive voltage pattern is required, resulting in rapid piezo expansion and slower piezo contraction, or "slip-stick". During operation, the stage makes a high pitch noise and may generate some heat. This is normal behavior in the performance of the device and does not indicate a fault condition.
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 be necessary.
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PD1 Mechanical Drawing
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PD1/M Mechanical Drawing
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, which are also available on the software CD included with the controllers.
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.
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).
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.
This K-Cube Controller is a compact, four-channel controller for easy manual and PC control of our piezoelectric inertia actuators. It is capable of single- or dual-channel operation and has an 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, USB connectivity provides easy 'Plug-and-Play' PC-controlled operation with two available software platforms: our new Kinesis® software package or our legacy APT™ (Advanced Positioning Technology) software package. The controller can be configured to operate up to four PD1(/M) stages or up to four piezo inertia actuators. One controller cannot be used to concurrently drive stages and actuators.
The unit has a very small 121.0 mm x 60.0 mm x 47.0 mm (4.76" x 2.36" x 1.85") footprint and may be mounted directly to the optical table using the 1/4" (M6) counterbored slots in the base plate. This compact size allows the controller 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.
Note: When used with the PD1(/M) stage, the KIM101 controller version must be 2019 or newer (per the S/N label) with a firmware revision of 010003 or higher (indicated when the controller is powered on). Earlier versions of the KIM101 controller or those with older firmware will not function properly with a PD1(/M) stage and may cause failure of the stage and/or the controller.
For more information, please see the full web presentation.
Power Supply Options
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A location-specific adapter is shipped with the power supply unit based on your location. The adapters for the KPS101 are shown here.
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The KPS101 Power Supply Unit
The KPS101 power supply outputs +15 VDC at up to 2.4 A and can power a single K-Cube or T-Cube with a 3.5 mm jack. It plugs into a standard wall outlet.
The KCH301 and KCH601 USB Controller Hubs each consist of two parts: the hub, which can support up to three (KCH301) or six (KCH601) K-Cubes or T-Cubes, and a power supply that plugs into a standard wall outlet. The hub draws a maximum current of 10 A; please verify that the cubes being used do not require a total current of more than 10 A. In addition, the hub provides USB connectivity to any docked K-Cube or T-Cube through a single USB connection.
For more information on the USB Controller Hubs, see the full web presentation.