Precision apparatus with non-rigid, imprecise structure, and met

Boots – shoes – and leggings

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

3641481, 36416707, 395 85, 395901, 901 45, G05B 19404

Patent

active

059464496

ABSTRACT:
An apparatus which allows one to maintain precision placement of a manipulator which undergoes repeated controlled motions or trajectories is provided. The structure of the apparatus is compliant such that the manipulator may be displaced by forces applied to the mechanical structure. This compliance is due to a lack of precision in the fabrication of the component parts of the machine, and to a lack of rigidity due to a lightweight design. This displacement is of a greater magnitude than the precision positioning tolerance of the apparatus. Consequently, the manipulator may then be displaced outside of the positioning tolerance due to applied forces. However, it is a characteristic of the present invention, that despite the compliance of the mechanical structure of the apparatus, the positioning tolerance will be maintained. The controlled motion is accomplished by the generation of control signals by computer software running on a computer control system. The control software enables the system to run at much greater speeds while not exciting unwanted movement or vibration in the compliant mechanical structure.

REFERENCES:
patent: 2801351 (1957-07-01), Calvert et al.
patent: 4603284 (1986-07-01), Perzley
patent: 4616326 (1986-10-01), Meier et al.
patent: 4618938 (1986-10-01), Sandland et al.
patent: 4860215 (1989-08-01), Seraji
patent: 4916635 (1990-04-01), Singer et al.
patent: 4977494 (1990-12-01), Gabaldon et al.
patent: 4990840 (1991-02-01), Migda
patent: 4998206 (1991-03-01), Jones et al.
patent: 5049797 (1991-09-01), Phillips
patent: 5206930 (1993-04-01), Ishikawa et al.
patent: 5220262 (1993-06-01), Kneifel, II et al.
patent: 5255199 (1993-10-01), Barkman et al.
patent: 5315526 (1994-05-01), Maeda et al.
patent: 5453933 (1995-09-01), Wright et al.
patent: 5546508 (1996-08-01), Jain et al.
patent: 5594309 (1997-01-01), McConnell et al.
A. Miyakawa, S. Hata et al.; A Flexible Assembly Station With Visual Sensors; IECON '84; vol. 2; 84 CH 1991-9; pp. 1036-1040; Oct. 1984.
Anton T.J.M. Smals; Sensing In Robotic Control--Economy Vision; Elsevier Science Publishers B.V. (North Holland) Robotics, 1987; pp. 175-180.
EK Teoh et al.; An Intelligent Robotic Vision System-Automatic Keyboard Assembly; IEEE School of Electrical & Electronic Engineering; 1987; pp. 550-554.
Sadegh, N., and Guglielmo, K., "Design and Implementation of Adaptive and Repetitive Controllers for Mechanical Manipulators," IEEE Transactions on Robotics and Automation, vol. 8, No. 3, Jun. 1992.
Feddema, J.T., "Digital Filter Control of Remotely Operated Flexible Robotic Structures," Proceedings of the ANS Fifth Topical Meeting on Robotics and Remote Systems, vol. 1, Knoxville, TN, Apr. 25-30, 1993, pp. 259-264.
Gorbatenko, G.G., "Posicast Control by Delayed Gain," Control Engineering, vol. 12, No. 2, Feb. 1965, pp. 74-77.
Hillsley, K.L. and Yurkovich, S., "Vibration Control of a Two-Link Flexible Robot Arm," Proceedings of the IEEE International Conference on Robotics and Automation, vol. 3, Sacramento, CA, Apr. 9-11, 1991, pp. 2121-2126.
Huang, S.J. and Lian, R.J., "Active Optimal Vibration Control for a Lumped System," Computers & Structures, vol. 51, No. 6, Jun. 17, 1994, pp. 749-862.
Hyde, J.M. and Seering, W.P., "Using Input Command Pre-Shaping to Suppress Multiple Mode Vibration," Proceedings of the IEEE International Conference on Robotics and Automation, vol. 3, Sacramento, CA, Apr. 9-11, 1991, pp. 2604-2609.
Hyde, J.M. and Seering, W.P., "Inhibiting Multiple Mode Vibration in Controlled Flexible Systems," Proceedings of the American Control Conference, vol. 3, Boston, MA, Jun. 26-28, 1991, pp. 2449-2454.
Johnson, C.R., Jr., "On the Interaction of Adaptive Filtering, Identification, and Control," IEEE Signal Processing Magazine, vol. 12, No. 2, Mar. 1995, pp. 22-37.
Khorrami, F., Jain, S., and Tzes, A., "Experiments on Rigid Body Based Controllers with Input Preshaping for a Two-Link Flexible Manipulator," Proceedings of the American Control Conference, vol. 4, Chicago, IL, Jun. 24-26, 1992, pp. 2957-2961.
Khorrami, F., Jain, S., and Tzes, A., "Experimental Results on Adaptive Nonlinear Control and Input Preshaping for Multi-Link Flexible Manipulators," Automatica, vol. 31, No. 1, Jan. 1995, pp. 83-97.
Magee, D.P., Dynamic Control Modification Techniques in Teleoperation of a Flexible Manipulator, M.S. Thesis, Georgie Institute of Technology, Nov. 1991.
Magee, D.P. and Book, W.J., "The Application of Input Shaping to a System with Varying Parameters," Proceedings of the Japan/USA Symposium on Flexible Automation, vol. 1, San Francisco, CA, Jul. 13-15, 1992, pp. 519-526.
Magee, D.P. and Book, W.J., "Experimental Verification of Modified Command Shaping Using a Flexible Manipulator," Proceedings of the First International Conference on Motion and Vibration Control, vol. 1, Yokohama, Japan, Sep. 7-11, 1992, pp. 553-558.
Magee, D.P. and Book, W.J., "Eliminating Multiple Modes of Vibration in a Flexible Manipulator," Proceedings of the IEEE International Conference on Robotics and Automation, vol. 2, Atlanta, GA, May 2-6, 1993, pp. 474-479.
Magee, D.P. and Book, W.J., "Implementing Modified Command Filtering to Eliminate Multiple Modes of Vibration," Proceedings of the American Control Conference, vol. 3, San Francisco, CA, Jun. 2-4, 1993, pp. 2700-2704.
Magee, D.P. and Book, W.J., "Filtering Schilling Manipulator Commands to Prevent Flexible Structure Vibration," Proceedings of the American Control Conference, vol. 3, Baltimore, MA, Jun. 29-Jul. 1, 1994, pp. 2538-2542.
Magee, D.P. and Book, W.J., "Filtering Micro-Manipulator Wrist Commands to Prevent Flexible Base Motion," Proceedings of the American Control Conference, vol. 1, Seattle, WA, Jun. 21-23, 1995, pp,. 924-928.
Magee, D.P., Optimal Arbitrary Time-delay Filtering to Minimize Vibration in Elastic Manipulator Systems, Ph.D. Thesis, Georgia Institute of Technology, Aug. 1996.
Magee, D.P., Cannon, D.W. and Book, W.J., "Combined Command Shaping and Inertial Damping for Flexure Control," Proceedings of the American Control Conference, vol. 3, Albuquerque, NM, Jun. 4-6, 1997, pp. 1330-1334.
Masri, S.F., Bekey, G.A., and Caughey, T.K., "Optimum Pulse Control of Flexible Structures," ASME Journal of Applied Mechanics, vol. 48, No. 3, Sep. 1981, pp. 619-626.
Murphy, B.R. and Watanabe, I., "Digital Shaping Filters for Reducing Machine Vibration," IEEE Transactions on Robotics and Automation, vol. 8, No. 2, Apr. 1992, pp. 285-289.
Rappole, B.W., Jr., Singer, N.C., and Seering, W.P., "Input Shaping with Negative Sequences for Reducing Vibrations in Flexible Structures," Proceedings of the American Control Conference, vol. 3, San Francisco, CA, Jun. 2-4, 1993, pp. 2695-2699.
Rattan, K.S. and Feliu, V., "Feedforward Control of Flexible Manipultors," Proceedings of the IEEE National Aerospace and Electronics Conference, vol. 3, Dayton, OH, May 20-24, 1991, pp. 1084-1089.
Rattan, K.S. and Feliu, V., "Feedforward Control of Flexible Manipulators," Proceedings of the IEEE International Conference on Robotics and Automation, vol. 1, Nice, France, May 12-14, 1992, pp. 788-793.
Sayed, A.H. and Kailath, T., "A State-Space Approach to Adaptive RLS Filtering," IEEE Signal Processing Magazine, vol. 11, No. 3, Jul. 1994, pp. 18-60.
Singer, N.C., Residual Vibration Reduction in Computer Controlled Machines, Ph.D. Thesis, Massachusetts Institute of Technology, Feb. 1989.
Singer, N.C. and Seering, W.P., Preshaping Command Inputs to Reduce System Vibration, Artificial Intelligence Memo No. 1027, Massachusetts Institute of Technology, Jan. 1988.
Singer, N.C. and Seering, W.P., "Preshaping Command Inputs to Reduce System Vibration," ASME Journal of Dynamic Systems, Measurement, and Control, vol. 112, No. 1, Mar. 1990, pp. 76-82.
Singer, N.C. and Seering, W.P., "An Extension of Command Shaping Methods for Controlling Residual Vibration using Frequency Sampling," Proceedings of the IEEE International Conference of Robotics and Automation, vol. 1, Nice, France, May 12-14, 1992, pp. 800-805.
Singh, T. and Heppler, G.R., "Shaped Inputs for a Multimode System", Proceedings of the IE

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Precision apparatus with non-rigid, imprecise structure, and met does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Precision apparatus with non-rigid, imprecise structure, and met, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Precision apparatus with non-rigid, imprecise structure, and met will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2428353

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.