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Kenneth P. Garrard PEC Staff

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Position

Education

Areas of Interest

Current Projects

Background

Selected Publications

Patents

Contact Information

Put ALT text herePosition

  • Research Associate

Education

  • BS, Computer Science, North Carolina State University, 1979
  • MS, Computer Studies, North Carolina State University, 1983

Areas of Interest

  • Freeform Optics
  • Diamond Turning Machines and Processes
  • Fast Tool Servos
  • Data Acquisition and Statistical Analysis
  • High Performance Control Systems Integration
  • Operating Systems Software

Current Projects

Background

As a full-time staff researcher at the Precision Engineering Center, Mr. Garrard's interests and duties have included the development of high performance control systems for ultra-precision machines and software development for custom, multiprocessor computer systems. He participated in the development of the original PEC fast tool servo as well as three other fast tool servo systems that have been delivered to commercial and government sponsors. One of these systems was built specifically for the on-axis turning of off-axis segments of conic surfaces of revolution and another is being used for the fabrication of inertial confinement fusion target mandrels. He has performed numerous prototype fabrication projects that required unique machine configurations and controller software. Mr. Garrard also has a long standing interest in the analysis of scientific data, programming language structures, sorting and searching algorithms, multiprocessor computer architecture and the design and implementation of hard real-time systems.

As a consultant he has developed an embedded operating system kernel for a leading gasoline pump manufacturer and a real-time operating system for a distributed multiprocessor based environmental and fire safety control system. He has also implemented a production scheduling system for a veneer and plywood manufacturer that incorporated process and material flow from multiple jobs and calculated local and global machine and human resource utilization parameters.

His experiences at the research laboratory for a major pharmaceutical company centered primarily on the development of statistical analysis software for pharmacokinetics and the implementation of mathematical models for non-linear enzymatic reaction rate analysis.

Selected Publications

  1. D. Brehl, T. Dow, K. Garrard and A. Sohn. Millimeter-scale Reflecting Optics Fabricated Using Elliptical Vibration-assisted Machining (EVAM). Proceedings of the Twenty-second Annual Meeting of the ASPE, 42, (2007).
  2. Q. Chen, T. Dow, K. Garrard and A. Sohn. Fast Long Range Actuator (FLORA). Proceedings of the Twenty-second Annual Meeting of the ASPE, 42, (2007).
  3. K. Garrard, T. Dow and K. Folkert. Ring Gauge for Evaluation of CMM Dynamics. Proceedings of the Twenty-first Annual Meeting of the ASPE, 39, (2006).
  4. A. Sohn, L. Lamonds and K. Garrard. Modeling of vibration in single-point diamond turning. Proceedings of the Twenty-first Annual Meeting of the ASPE, 39, (2006).
  5. D. Brehl, T. Dow, K. Garrard and A. Sohn. Micro-structure fabrication using elliptical vibration-assisted machining (EVAM). Proceedings of the Twenty-first Annual Meeting of the ASPE, 39, (2006).
  6. L. Lamonds, N. Wanna, R. Woodside, T. Dow, K. Garrard and A. Sohn. Design and fabrication of optical systems. Proceedings of the Twentieth Annual Meeting of the ASPE, 37, 41-44, (2005).
  7. A. Sohn, K. Garrard, T. Dow and T. Bruegge. Simulation of manufacturing errors for freeform optics. Proceedings of the Twentieth Annual Meeting of the ASPE, 37, 45-47, (2005).
  8. K. Garrard, T. Bruegge, J. Hoffman, T. Dow and A. Sohn. Design tools for freeform optics. Proceedings of the SPIE, 5874, (2005). (PDF, 1.23 Mb)
  9. W. Panusittikorn, K.P. Garrard and T.A. Dow. Error Compensation via Command Signal Deconvolution. Proceedings of the Nineteenth Annual Meeting of the ASPE, 34, 201-204, (2004).
  10. K.F. Folkert, K.P. Garrard and T.A. Dow. Metrology Artifact Design. Proceedings of the Nineteenth Annual Meeting of the ASPE, 34, 462-465, (2004).
  11. R.G. Ohl, A. Sohn, T.A. Dow and K.P. Garrard. Highlights of the ASPE 2004 Winter Topical Meeting on free-form optics: design, fabrication, metrology, assembly. Proceedings of the SPIE, 5494, (2004).
  12. M.M. Balkey, R.D. Day, S.H. Batha, N.E. Elliot, T. Pierce, D.L. Sandoval, K.P. Garrard and A. Sohn. Production and Metrology of Cylindrical Inertial Confinement Fusion Targets with Sinusoidal Perturbations. Fusion Science and Technology, 45, 2, (2004).
  13. T.A. Dow, E.L. Miller and K.P. Garrard. Tool force and deflection compensation for small milling tools. Precision Engineering, 28, 1, 31-45, (2004).
  14. W. Panusittikorn, K.P. Garrard and T.A. Dow. Error Compensation Using Inverse Actuator Dynamics. Proceedings of the Eighteenth Annual Meeting of the ASPE, 30, 107-110, (2003).
  15. A. Sohn and K.P. Garrard. Tip Waviness Compensation in a Polar Profilometer. Proceedings of the Eighteenth Annual Meeting of the ASPE, 30, 355-358, (2003).
  16. M.M. Balkey, R.D. Day, S.H. Batha, N.E. Elliot, T. Pierce, D.L. Sandoval, K.P. Garrard and A. Sohn. Production and Metrology of Cylindrical Inertial Confinement Fusion Targets with Sinusoidal Perturbations. 15th ICF Target Fabrication Workshop, June 1-5, (2003).
  17. R.G. Ohl, W. Preuss, A. Sohn, S. Conkey, K. Garrard, J.G. Hagopian, J.M. Howard, J.E. Hylan, S.M. Irish, J.E. Mentzell, M. Schroeder, L.M. Sparr, R.S. Winsor, S.W. Zewari, M.A. Greenhouse, and J.W. MacKenty. Design and fabrication of diamond machined, aspheric mirrors for ground-based, near-IR astronomy. Proceedings of the SPIE, 4841, 677-688 (2003).
  18. A. Sohn, K.P. Garrard, R.G. Ohl, R. Mink, R. and V.J. Chambers. Figure Metrology of a Free-Form Optical Surface. Proceedings of the Seventeenth Annual Meeting of the ASPE, 27, 73-76, (2002).
  19. D. Hood, D, S. Clayton, G.D. Buckner, T.A. Dow and K.P. Garrard. Closed Loop Control of Milling Tool Deflection. Proceedings of the Seventeenth Annual Meeting of the ASPE, 27, 622-625, (2002).
  20. K.P. Garrard, A. Sohn, R.G. Ohl, R. Mink, V.J. Chambers. Off-Axis Biconic Mirror Fabrication. Proceedings of the Third International Meeting of the European Society for Precision Engineering and Nanotechnology (EUSPEN), 277-280, (2002).
  21. A. Sohn, K.P. Garrard, T.A. Dow. The Polar Profilometer "Polaris." Proceedings of the Sixteenth Annual Meeting of the ASPE, 25, 28-31, (2001).
  22. T.A. Dow, E. Miller, A. Sohn, K.P. Garrrad and T. Wright. Compensation of tool forces in small diameter end mills. Proceedings of the Fourteenth Annual ASPE Meeting, 20, 546-550 (1999). (PDF, 788 Kb)
  23. K.P. Garrard, A. Sohn, T.A. Dow, D.G. Pelka and W.A. Parkyn. Fabrication of non-imaging optical surfaces. Proceedings of the Thirteenth Annual ASPE Meeting, 18, 39-43, (1998).
  24. B.H. Jared, T.A. Dow, K.P. Garrard, G.M. Moorefield, C. Barnes, R.D. Day, D.J. Hatch, L.J. Salzer and G. Rivera. Fabrication of Hydrodynamic Instability Targets. Fusion Technology, 31, 501-503, (1997).
  25. B.H. Jared, T.A. Dow, K.P. Garrard, G.M. Moorefield, C. Barnes, R.D. Day, D.J. Hatch, L.J. Salzer and G. Rivera. Fabrication of Surface Perturbations on Inertial Confinement Fusion Targets. Proceedings of the Eleventh Annual ASPE Meeting, 14, 432-435, (1996).
  26. G.M. Moorefield, K.P. Garrard, K.J. Falter, L.W. Taylor and T.A. Dow. Generation of rotationally asymmetric optical surfaces using a fast tool servo. Proceedings of the Ninth Annual ASPE Meeting, 10, 45-48, (1994).
  27. M.H. Miller, K.P. Garrard, T.A. Dow and L.W. Taylor. A controller architecture for integrating a fast tool servo into a diamond turning machine. Precision Engineering, 16(1), 42-48, (1994).
  28. W.D. Allen, R.J. Fornaro, K.P. Garrard and L.W. Taylor. A high performance embedded machine tool controller. Microprocessors and Microprogramming, 40, 179-191, (1994). (PDF, 133 Kb)
  29. M.H. Miller, K.P. Garrard, T.A. Dow and L.W. Taylor. Controller design for a modern diamond turning machine. Proceedings of the Sixth Annual ASPE Conference, 4, 62-65, (1991).
  30. R.J. Fornaro, K.P. Garrard and L.W. Taylor. Architecture and algorithms for computer control of high precision machine tools. Proceedings of the Fifth Annual ASPE Conference, 2, 27-30, (1990).
  31. K.P. Garrard, R.J. Fornaro, L.W. Taylor and D.A. Skroch. Programmer's manual for a real-time heterogeneous mulitprocessor. Department of Computer Science Technical Report TR 87-05, North Carolina State University, (1987).
  32. L.W. Taylor, R.J. Fornaro and K.P. Garrard. The architecture of an 8086 based mulitprocessor. Department of Computer Science Technical Report TR 86-22, North Carolina State University, (1986).
  33. K.P. Garrard, R.J. Fornaro and L.W. Taylor. Systems software for an 8086 based mulitprocessor. Department of Computer Science Technical Report TR 86-21, North Carolina State University, (1986).
  34. K.P. Garrard. Implementation of experimental concurrent programming environments. M.S. Thesis, Department of Computer Science, North Carolina State University, (1983).
  35. R.J. Fornaro, K.P. Garrard and E.M. Uzzle. A structured approach to teaching operating systems principles using a high level concurrent programming language. Proceedings of the 14th SIGCSE Technical Symposium on Computer Science Education, ACM SIGCSE Bulletin, 15(1), 41-49, (1983).
  36. K.P. Garrard and C. Savage. Node lists for general flow graphs. Department of Computer Science Technical Report TR 80-07, North Carolina State University, (1980).
  37. K.P. Garrard and K.C. Tai. Comments on the suggested implementation of tasking facilities in the 'Rationale for the Design of the ADA Programming Language'. ACM SIGPLAN Notices, 5(10), 76-84, (1980).

Patents

  • United States Patent No. 6,895,682.
    Polar coordinate-based profilometer and methods, May 24, 2005.

  • United States Patent No. 5,467,675.
    Apparatus and method for forming a workpiece surface into a non-rotationally symmetric shape, November 21, 1995.

Contact Information

Phone (919) 515-3096
Fax (919) 515-3964
E-mail ken_garrard@ncsu.edu or ken_garrard@ieee.org
Office location Room 109, Research Building 1, Centennial Campus
Office hours 9:00 a.m. to 6:00 p.m., Monday - Friday
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Phone (919) 515-3096, Fax (919) 515-3964
For information, send e-mail to Thomas Dow (thomas_dow@ncsu.edu).
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