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in creator/contributor: "Trumper, D L"  
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System Dynamics and Control System for a High Bandwidth Rotary Actuator and Fast Tool Servo

Description: This paper explores some of the system dynamics and control issues for a short-stroke rotary actuator that we designed and tested for a new fast tool servo referred to as the 10 kHz rotary fast tool servo. The use of a fast tool servo (FTS) with a diamond turning machine for producing non-axisymmetric or textured surfaces on a workpiece is well known. In a previous paper [1] the authors provide details on the mechanical design and trade-off issues that were considered during the design phase fo… more
Date: August 5, 2005
Creator: Montesanti, R C & Trumper, D L
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

High Bandwidth Short Stroke Rotary Fast Tool Servo

Description: This paper presents the design and performance of a new rotary fast tool servo (FTS) capable of developing the 40 g's tool tip acceleration required to follow a 5 micron PV sinusoidal surface at 2 kHz with a planned accuracy of 50 nm, and having a full stroke of 50 micron PV at lower frequencies. Tests with de-rated power supplies have demonstrated a closed-loop unity-gain bandwidth of 2 kHz with 20 g's tool acceleration, and we expect to achieve 40 g's with supplies providing {+-} 16 Amp to th… more
Date: August 22, 2003
Creator: Montesanti, R C & Trumper, D L
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Design and Implementation of the Control System for a 2 kHz Rotary Fast Tool Servo

Description: This paper presents a summary of the performance of our 2 kHz rotary fast tool servo and an overview of its control systems. We also discuss the loop shaping techniques used to design the power amplifier current control loop and the implementation of that controller in an op-amp circuit. The design and development of the control system involved a long list of items including: current compensation; tool position compensation; notch filter design and phase stabilizing with an additional pole for … more
Date: March 29, 2004
Creator: Montesanti, R C & Trumper, D L
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Early testing of a coarse/fine precision motion control system

Description: This abstract presents a brief overview of key components of a motion control stage for accurate nanometer level positioning for scanning specimens over an area measuring 50 mm x 50 mm. The completed system will utilize a short-range, third generation 6 degree-of-freedom fine motion control platform (4 microns, 160 micro-radians) carried by a long-range, two-axis x-y positioning system (50 mm x 50 mm). Motion of the controlled platform relative to a measurement frame will be measured using a he… more
Date: August 1, 2005
Creator: Buice, E. S.; Yang, H.; Smith, S. T.; Hocken, R. J.; Seugling, R. M.; Trumper, D. L. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Controller strategy for a 6 DOF piezoelectric translation stage

Description: A controller for the third generation, 6 degree-of-freedom (DOF) piezoelectric translation stage shown in Figure 1 is presented. This was tested by monitoring all six coordinate motions using an orthogonal array of six, high-resolution capacitance gages. The full 6 DOF matrix transformations and controller block diagrams for this system have been measured and the system operated under closed loop control. Results of early experiments to determine the 21 open loop response functions as well as p… more
Date: March 22, 2006
Creator: Buice, E. S.; Yang, H.; Smith, S. T.; Hocken, R. J.; Trumper, D. L.; Otten, D. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

A comparison of drive mechanisms for precision motion controlled stages

Description: This abstract presents a comparison of two drive mechanisms, a Rohlix{reg_sign} drive and a polymer nut drive, for precision motion controlled stages. A single-axis long-range stage with a 50 mm traverse combined with a short-range stage with a 16 {micro}m traverse at a operational bandwidth of 2.2 kHz were developed to evaluate the performance of the drives. The polymer nut and Rohlix{reg_sign} drives showed 4 nm RMS and 7 nm RMS positioning capabilities respectively, with traverses of 5 mm at… more
Date: March 22, 2006
Creator: Buice, E. S.; Yang, H.; Otten, D.; Smith, S. T.; Hocken, R. J.; Trumper, D. L. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Design and performance evaluation of a coarse/fine precision motion control system

Description: This abstract presents current collaborative work on the development of a stage system for accurate nanometer level positioning for scanning specimens spanning an area of 50 mm x 50 mm. The completed system employs a coarse/fine approach which comprises a short-range, six degree-of-freedom fine-motion platform (5 microns 200 micro-radians) carried by a long-range, two-axis X-Y coarse positioning system. Relative motion of the stage to a fixed metrology frame will be measured using a heterodyne … more
Date: March 2, 2005
Creator: Yang, H.; Buice, E. S.; Smith, S. T.; Hocken, R. J.; Fagan, T. J.; Trumper, D. L. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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