Notes (Technical Data)
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A3 Design resolutionThe theoretical minimum movement that can be made based on the selection of the mechanical drive components (drive screw pitch, gear ratio, angular motor resolution etc.). Design resolution is usually higher than the practical position resolution (minimum incremental motion).
A4 Minimum incremental motion
The minimum motion that can be repeatedly executed for a given input, which is sometimes referred to as practical or operational resolution. Design resolution and practical resolution have to be distinguished. Design resolutions of 1 nm or better can be achieved with many motor, gearbox and leadscrew combinations. In practical applications, however, stiction/friction, windup, and elastic deformation limit resolution to fractions of a micron.
Repeatable nanometer or sub-nanometer resolution can only be provided by solid state actuators (PZTs) and PZT flexure stages (see "PZT Flexure NanoPositioners" and "PZT Actuators" sections for details).
A5 Rotation / linear input, tangent arm length
Angular displacement of Tangent Arm Rotation Stages is determined by the arm length and the linear motion input pushing the arm (click here for information on how to calculate angular displacement from linear input).
B1 Max. normal load capacity
Centered, horizontal use.
B2 Max. push/pull force
Active and passive force limit in operating direction, at center of stage. Some stages may be able to generate higher forces at the cost of lifetime.
D1 PZT Drive
See "PZT Actuators" section for details.
D2 Recommended motor controller
See "Motor Controllers" section.
L Body material
Stages are usually made of anodized aluminum or stainless steel. Small amounts of other materials can be used internally (for bearings, preload, coupling, mounting, etc.).
Al: Aluminum
N-S non magnetic stainless steel
St: ferromagnetic stainless steel
I: Invar
M Recommended PZT Driver/ Controller
See table at the end of "PZT Electronics" section.
