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Experiments on Ultrasonic Lubrication Using a Piezoelectrically-assisted Tribometer and Optical Profilometer
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Note: a Piezo Tip/Tilt Platform: structure, kinematics, and experiments.

Z Du1, Y Su1, W Yang1

  • 1State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin 150080, China.

The Review of Scientific Instruments
|May 3, 2014
PubMed
Summary
This summary is machine-generated.

A new Piezo Tip/Tilt Platform (PT(2)P) offers high precision positioning. Kinematic models were verified, showing resolution better than 0.50 μrad and repeatability better than 0.25 μrad.

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Area of Science:

  • Mechanical Engineering
  • Optics
  • Nanotechnology

Background:

  • Precise tip/tilt motion is crucial for various optical and scanning probe applications.
  • Existing platforms may lack the required resolution or repeatability for demanding tasks.

Purpose of the Study:

  • To present a novel Piezo Tip/Tilt Platform (PT(2)P) with detailed structural and kinematic analysis.
  • To experimentally validate the derived kinematic models and assess the platform's performance.

Main Methods:

  • Development of two key models: an equivalent flexure hinge model and a simplified transmission mechanism model.
  • Derivation of the inverse kinematics for the PT(2)P based on the developed models.
  • Experimental validation using a prototype PT(2)P, measuring resolution and repeatability.

Main Results:

  • The kinematic model of the PT(2)P was successfully derived and validated against experimental data.
  • The prototype PT(2)P demonstrated a resolution better than 0.50 μrad.
  • The repeatability of the PT(2)P was found to be better than 0.25 μrad.

Conclusions:

  • The presented PT(2)P design and kinematic models are accurate and effective.
  • The platform achieves sub-microradian resolution and repeatability, suitable for high-precision applications.
  • The study confirms the viability of the PT(2)P for advanced positioning tasks.