PATENTS & PUBLICATIONS

This page lists the patents and publications of the Precision Motion Contol Lab.

Publications

Papers in Refereed Journals
1	Trumper, D.L., "An Electronically-Controlled Pressure Regulator," ASME Journal of Dynamic Systems, Measurement, and Control, Vol. 111, No. 1, March 1989, pp. 75-82.
2	Williams, M.E. and Trumper, D.L., "Magnetic Bearing Stage for Photolithography," CIRP Annals, Vol. 42/1/1993, pp. 607-610. **
3	Poovey, T., Holmes, M., and Trumper, D.L., "A Kinematically-Coupled Magnetic Bearing Test Fixture," Precision Engineering, vol. 16, No. 2, April 1994, pp. 99-108. **
4	Holmes, M.L., Trumper, D.L., and Hocken, R.J., "Atomic-Scale Precision Motion Control Stage (The Angstrom Stage)," CIRP Annals, Vol. 44/1/1995, pp. 455-460. **
5	Holmes, M.L. and Trumper, D.L., "Magnetic/Fluid Bearing Stage for Atomic-Scale Motion Control," Precision Engineering, vol. 18, No. 1, Jan. 1996, pp. 38-49.**
6	Trumper, D. L., Kim, W-J, Williams, M. E., "Design and Analysis Framework for Linear Permanent Magnet Machines," IEEE Transactions on Industry Applications,Vol. 32, No. 2, March/April 1996, pp. 371-379.**
7	Ludwick, S.J., Trumper, D.L. and Holmes, M.L., "Modeling and Control of a Six Degree of Freedom Magnetic/Fluidic Motion Control Stage," IEEE Transactions on Control Systems Technology,  Special Issue on Magnetic Bearing Control, Vol. 4, No. 5, September 1996, pp. 553-564.**
8	Subrahmanyan, P.K., Olson, S. M., and Trumper, D.L., "Linearizing Control of Magnetic Suspension Systems," IEEE Transactions on Control Systems Technology,  Vol. 5, No. 4, July 1997, pp. 427-438.**
9	Kim, W-J, Trumper, D.L. and Bryan, J., "Linear Motor Levitated Stage for Photolithography," CIRP Annals, Vol. 46/1/1997, pp. 447-450.**
10	Nohavec, D.R., and Trumper, D.L., "Super-Hybrid Magnetic Suspensions for Interferometric Scanners," JSME International Journal, Series C, Vol. 40, No. 4, Dec, 1997, pp. 570-583, Special Issue on Magnetic Bearings.**
11	Kim, W-J, Trumper, D.L, "High-Precision Magnetic Levitation Stage for Photolithography," Precision Engineering, Vol. 22, No. 2, April 1998, pp. 66-77.**
12	Kim, W-J, Trumper, D.L, Lang, J.H., "Modeling and Vector Control of a Planar Magnetic Levitator," IEEE Transactions on Industry Applications, Vol. 34, No. 6, Nov./Dec., 1998, pp. 1254-1262.**
13	Ludwick, S.J., Chargin, D.A., Calzaretta, J.A., and Trumper, D.L., "Design of a Rotary Fast Tool Servo for Ophthalmic Lens Fabrication," Precision Engineering, Vol. 23, No. 4, September, 1999.**
14	Holmes, M.L., Hocken, R.J., and Trumper, D.L., "Development of a Long-Range Scanning Stage," Precision Engineering, Vol. 24, No. 3, July, 2000.**
Proceedings of Refereed Conferences
1	Trumper, D.L. and Slocum, A.H., "Five Degree of Freedom Control of an Ultra-Precision Magnetically-Suspended Linear Bearing," NASA Workshop on Aerospace Applications of Magnetic Suspension Technology, Sept. 25-27, 1990.
2	Trumper, D.L., "Nonlinear Compensation Techniques for Magnetic Suspension Systems," NASA Workshop on Aerospace Applications of Magnetic Suspension Technology, Sept. 25-27, 1990.
3	Trumper, D.L. and Queen, M.A., "Precision Magnetic Suspension Linear Bearing," NASA International Symposium on Magnetic Suspension Technology, Aug. 19-23, 1991. **
4	Trumper, D.L., Sanders, J.C., Nguyen, T.H., and Queen, M.A., "Experimental Results in Nonlinear Compensation of a One-Degree-of-Freedom Magnetic Suspension," NASA International Symposium on Magnetic Suspension Technology, Aug. 19-23, 1991. **
5	Trumper, D.L. and Slocum, A.H., "Nanometer Motion Control via Magnetic Suspension," Proceedings of the 6th Annual Meeting of the American Society for Precision Engineering, Oct. 13-18, 1991.
6	Trumper, D.L. and Queen, M.A., "Control and Actuator Design for a Precision Magnetic Suspension Linear Bearing," SPIE OE/Aerospace Sensing Symposium, Conference No. 1696, Controls for Optical Systems, Orlando, FL, April 20-24, 1992. **
7	Trumper, D.L., Nguyen, T., and Williams, M., "Power-Efficient Linear Motor for Precision Motion Control," Proceedings of the 7th Annual Meeting of the American Society for Precision Engineering, Oct. 20-23, 1992. **
8	Poovey, T., Holmes, M., and Trumper, D.L., "A Kinematically Coupled Magnetic Bearing Test Fixture," Proceedings of the 7th Annual Meeting of the American Society for Precision Engineering, Oct. 20-23, 1992. **
9	Trumper, D.L., "Magnet Arrays for Synchronous Machines," IEEE Industry Applications Society Annual Conference, Toronto, Canada, Oct. 3-8, 1993.
10	Trumper, D.L., Williams, M.E., and Nguyen, T., "Magnetic Linear Bearing: Theory and Experiment," 7th International Precision Engineering Seminar (IPES-7), Kobe, Japan, May, 1993. **
11	Williams, M.E. and Trumper, D.L., "Materials for Efficient High-Flux Magnetic-Bearing Actuators," Proceedings of the 2nd International Symposium on Magnetic Suspension Technology, Seattle, WA, Aug. 11-13, 1994, NASA Conference Publication #3247, Part 1, pp. 135-145. **
12	Kuzin, A.V., Holmes, M.L., Behrozjou, R., and Trumper, D.L., "Analysis of Achievable Disturbance Attenuation in a Precision Magnetically-Suspended Motion Control System," Proceedings of the 2nd International Symposium on Magnetic Suspension Technology, Seattle, WA, Aug. 11-13, 1994, NASA Conference Publication #3247, Part 2, pp. 653-665. **
13	Trumper, D.L., Holmes, M., Behrozjou, R., and Batchelder, D., "Magnetic/Fluid-Bearing Stage for Atomic-Scale Motion Control," 1994 ASPE Spring Topical Meeting, Tucson, AZ, April 6-8, 1994. **
14	Trumper, D.L., Holmes, M., Behrozjou, R., and Batchelder, D., "Atomic-Scale Motion Control via Hybrid Fluid/Magnetic Bearings," 4th International Symposium on Magnetic Bearings, Zürich, Switzerland, August 25, 1994. **
15	Trumper, D.L., Kim, W-J., and Williams, M.E., "Design & Analysis Framework for Linear Permanent Magnet Machines," 1994 IEEE Industry Applications Society Annual Meeting, Denver, CO, October 2-7, 1994. **
16	Williams, M.E., and Trumper, D.L., "Precision Magnetic Bearing Six Degree of Freedom Stage," Proceedings of the 9th Annual Meeting of the American Society for Precision Engineering, October 2-7, 1994, pp. 65-68. **
17	Chen, K.S., Montero, A., Trumper, D.L., Smith, S.T., and Williams, M.E., "Spring Dominated Design of a High Load Capacity Electromagnetically Driven X-Y-_ Stage," 1995 ASPE Annual Meeting, October, 1995.**
18	Ludwick, S.J., Trumper, D.L., and Holmes, M.L., "Design and Control of a Six Degree of Freedom Magnetic/Fluidic Motion Control Stage," ASME 1995 International Mech. Eng. Congress and Exposition, San Francisco, CA, DSC Volume 57-1, pp. 511-518, November 12-17, 1995. **
19	Ludwick, S.J., Trumper, D.L., and Holmes, M.L., "Feedback Linearization in a Six Degree-of-Freedom Mag-Lev Stage," Third International Symposium on Magnetic Suspension Technology, Tallahassee, FL, December 13-15, 1995. **
20	Williams, M.E., and Trumper, D.L., "Precision Magnetic Bearing Six Degree of Freedom Stage," Third International Symposium on Magnetic Suspension Technology, Tallahassee, FL, Dec. 13-15, 1995. **
21	Kim, W.-J., and Trumper, D.L., "Force Ripple in Surface-Wound Permanent-Magnet Linear Motors," IEEE Intermag '96, Seattle, WA, April 9-12, 1996.**
22	Schwartz, L.S., and Trumper, D.L., "Magnetic Optical Bearing Design for Minor Wavelength Scans in a Spaceborne Interferometer," 5th International Symposium on Magnetic Bearings, Kanazawa, Japan, August 28-30, 1996.**
23	Kim, W.-J., Berhan, M.T., Trumper, D.L., and Lang, J.H., "Analysis and Implementation of a Tubular Motor with Halbach Magnet Array," 1996 IEEE-IAS Annual Meeting, San Diego, CA, October 5-10, 1996.**
24	Ludwick, S. J., and Trumper, D.L., "Noise Optimal Control of a Fluid-Floated Magnetic Positioner," Proceedings of the 1996 ASME Int'l Mechanical Engineering Congress and Exposition, Atlanta, GA, November 1996, DSC-Vol. 58, pp. 309-316.**
25	Holmes, M.L., Hocken, R.J., and Trumper, D.L., "A Long-Range Scanning Stage (The LORS Project)," Proceedings of 1996 ASPE Annual Meeting, November 1996.**
26	Hocken, R., Holmes, M.L., and Trumper, D.L., "Progress on the Long Range Magnetic Stage," Proceedings of the 9th International Precision Engineering Seminar, Braunschweig, Germany, May 26-30, 1997.**
27	Kim, W-J., Lang, J., and Trumper, D.L., "Modeling and Vector Control of a Planar Magnetic Levitator," IEEE IAS 32nd Annual Meeting, October 9, 1997.**
28	Kim, W-J, and Trumper, D.L., "High-Precision Magnetic Levitation Stage for Photolithography," Proceedings of 1997 ASPE Annual Meeting, Norfolk, VA, Oct. 7-9, 1997.**
29	Holmes, M.L., Hocken, R.J., and Trumper, D.L., "A Long-Range Scanning Stage (The LORS Project)," Proceedings of 1997 ASPE Annual Meeting, October 7-9, 1997, Norfolk, VA.**
30	Williams, M.E., Subrahmanyan, P.K., and Trumper, D.L., "Six Axis Active Vibration Isolation and Payload Reaction Force Compensation System," Proceedings of 1997 ASPE Annual Meeting, October 7-9, 1997, Norfolk, VA.**
31	Kim, W-J, and Trumper, D.L., "Six-Degree-of-Freedom Planar Positioner with Linear Magnetic Bearings/Motors," 6th International Symposium on Magnetic Bearings, MIT, Cambridge, MA, Aug. 5-7, 1998.**
32	Holmes, M. L., Trumper, D.L., Hocken, RJ., "Magnetically-Suspended Stage for Accurate Positioning of Large Samples in Scanned Probe Microscopy," 6th International Symposium on Magnetic Bearings, MIT, Cambridge, MA, Aug. 5-7, 1998.**
33	Subrahmanyan, P.K., Williams, M.E., and Trumper, D.L., "Active Vibration Isolation Design for a Photolithographic Stepper," 6th International Symposium on Magnetic Bearings, MIT, Cambridge, MA, Aug. 5-7, 1998.**
34	Gibbons, K.A., Borenstein, J.T., Nokes, D.S., Weinberg, M.S., and Trumper, D.L., "The Design, Fabrication, and Testing of a Micromechanical Silicon Oscillating Accelerometer," AIAA Conference on Guidance and Control, Boston, MA, August 10-12, 1998.**
35	Ludwick, S.J., Ma, D.C., and Trumper, D.L., "A Rotary Arm Based Turning Machine for Ophthalmic Lenses," Proceedings of the 1998 ASPE Annual Meeting, October 25-30, 1998, St. Louis, MO.**
36	Liebman, M.J., and Trumper, D.L., "Pushing the Thermal Limit in Linear Motors," Proceedings of the 1998 ASPE Annual Meeting, October 25-30, 1998, St. Louis, MO.**
37	Subrahmanyan, P.K., and Trumper, D.L., "Eigenstructure Assignment Techniques for Precision Motion Control," Proceedings of the 1998 ASPE Annual Meeting, October 25-30, 1998, St. Louis, MO.**
38	Kim, W-J, and Trumper, D.L., "Precision Control of Planar Magnetic Levitator," Proceedings of the 1998 ASPE Annual Meeting, October 25-30, 1998, St. Louis, MO.**
39	Kim, W-J, and Trumper, D.L., "Velocity Regulation Limits in a Precision Two-Dimensional Magnetic Levitator," IEEE 1999 International Magnetics Conference (INTERMAG 99), May 18-21, 1999, Kyongju, Korea.**
40	Subrahmanyan, P.K, and Trumper, D.L., "Eigenvector Assignment", received best presentation award in session TM-10, 1999 American Control Conference, June 2-4, 1999, San Diego, CA.**
41	Weng, M-C., Ritter, R.J., and Trumper, D.L., "Magnetic Suspension and Vibration Control of Beams for Non-Contact Processing," 1999 IEEE Conference on Control Applications, Kohala Coast-Island of Hawaii, USA, August 22-26, 1999.**
42	Trumper, D.L., and Ludwick, S.J., "Development of 2.737 Mechatronics at MIT," invited paper  for special session on Teaching Mechatronics, proceedings of IEEE/ASME Conference on Advanced Intelligent Mechatronics (AIM `99), Atlanta, GA, September 19-23, 1999, pp. 446-451.
43	Ludwick, S.J., Chargin, D.A., Calzaretta, J.A., and Trumper, D.L., "Calibration and Control of a Rotary Fast Tool Servo," 1999 ASPE Annual Meeting, Monterey, CA, Oct. 31-Nov. 4, 1999.**
44	Weng, M.C., and Trumper, D.L., "A Design Method for Magnetic Suspension and Vibration Control of Levitated Beams for Noncontact Processing," Proceedings of the 5th International Symposium on Magnetic Suspension Technology, December 1-3, 1999.**
45	Trumper, D.L., and Ludwick, S.J., "Development of dSPACE Tools for 2.737 Mechatronics at MIT," dSPACE User's Conference, Detroit, MI, May 1-2, 2000.**
46	Trumper, D.L., and Sato, T., "A Vibration Isolation Platform," Mechatronics 2000, the 7th Mechatronics Forum International Conference, Atlanta, GA, Sept. 6-8, 2000.
47	Calzaretta, J., Ludwick, S.J., and Trumper, D.L., "Repetitive Control of a Fast-Tool Servo for Asymmetric Diamond Turning," Mechatronics 2000, the 7th Mechatronics Forum International Conference, Atlanta, GA, Sept. 6-8, 2000.**
48	Trumper D.L., Weng, M-C, and Lu, X., "Magnetic Suspension of Flexible Elements," 7th International Symposium on Magnetic Bearings, Zürich, Switzerland, Aug., 2000.**
	(** outgrowth of supervised thesis)

 

Patents

1	Trumper, D.L., and Dourdeville, T., "Fluid Composition and Volumetric Delivery Control," #4,767,279, August 30, 1988.
2	Trumper, D.L., "Bearing for Use in High Resolution Precision Control Device," #5,157,296, October 20, 1992.
3	Trumper, D.L., "Magnetic Positioning Device," #5,196,745, March 23, 1993
4	Trumper, D.L., "Bearing for Use in High Resolution Precision Control Device," #5,294,854, March 15, 1994.
5	Trumper, D.L., Kim, Won-Jong, and Williams, Mark E., "Magnetic Arrays," #5,631,618, May 20, 1997.
6	Trumper, D.L. and Williams, M.E., "Positioner with Long Travel in Two Dimensions," #5,699,621, December 23, 1997.
7	Trumper, D.L. and Kim, W.-J., "Magnetic Positioner Having a Single Moving Part," #6,003,230, December 21, 1999.
8	Trumper, D.L. and Schwartz, L., "Magnetic Actuator With Long Travel in One Direction," #6066998, May 23, 2000.