ont ctures nteractlon !ec no ogy - on rence = _= _...... of a conference held in Lake Tahoe, Nevada _arch 3-5 1992 .... N93-18818 (NASA-CP-3ITT-Pt-I) THE FIFTH --THRU-- CONTROLS-STRUCTURES NASA/DOD N93-18846 I'U/'_SPi INTERACTION TECHNOLOGY CONFERENCE, Unclas PART I (NASA) 416 p ...................................... : :::.. ___ HI/18 0145970 iF _r _r NASA Conference Publication 3177 Part 1 Fifth NASA/DoD Controls-Structu res Interaction Technology Conference Compiled by Jerry R. Newsom NASA Langley Research Center Hampton, Virginia Proceedings of a conference sponsored by the National Aeronautics and Space Administration, Washington, D.C., and the Department of Defense, Washington, D.C., and held in Lake Tahoe, Nevada March 3-5, 1992 National Aeronautics and Space Administration Office of Management Scientific and Technical Information Program 1993 ml E Pl PREFACE The National Aeronautics and Space Administration (NASA) and the Department of Defense (DoD) are actively involved in the development of a validated technology data base in the area of controls-structures interaction (CSI) for flexible spacecraft. The development of this technology is essential to the efficient and confident development of future spacecraft to meet stringent goals in performance and cost. Both NASA and Do D have programs in CSI, structural dynamics, and controls. The activities of these programs provide a systematic approach to address technology voids through development and validation of analytical tools, extensive ground testing of representative structures, and future in-space experiments for verification of analysis and ground test methods. In order to promote timely dissemination of technical information acquired in these programs, the NASA Langley Research Center and the Wright Laboratory alternately sponsor a conference to report to industry, academia, and government agencies on the current status of controls-structures interaction technology. This publication is a compilation of the papers presented at the fifth NASA/DoD CSI Technology Conference. The use of trade names or manufacturers in this publication does not constitute an official endorsement of such products or manufacturers, either expressed or implied, by the National Aeronautics and Space Administration. Jerry R. Newsom Technical Program -Chairman !!! PRE'CED!NG P._IGE BL/_,;,IK I_OT FILMED II: z m_ G F CONTENTS Preface iii Attendees ................................... ix Part 1 SESSION I Chairman: Henry B. Waites Co-Chairman: Capt. Ted Doederlein The Mini-Mast CSI Testbed: Lessons Learned ................... 3 S. E. Tanner, W. K. Belvin, L. G. Horta, and R. S. Pappa Model Reduction for the Dynamics and Control of Large Structural Systems Via Neural Network Processing Direct Numerical Optimization ............. 25 Georges A. Brcus and Alistair K. Chan Physical Insight into the Simultaneous Optimization of Structure and Control ..... 35 Robert N. Jacques and David W. Miller Smart Patch Piezoceramic Actuator Issues ..................... 47 S. F. Griffin, K. K. Denoyer, and B. J. Yost A Numerical Approach to Controller Design for the Aces Facility ........... 65 W. Garth Frazier and R. Dennis Irwin Model Reduction Results for Flexible Space Structures 79 Trevor Williams and Masoud Mostarshedi An Application of the ObserverfKalman Filter Identification (OKID) Technique to Hubble Flight Data .............................. 97 Jer-Nan Juang, Lucas G. Horta, W. Keith Belvin, John Sharkey, and Frank H. Bauer SESSION H Chairman: Jerome Pearson Co-Chairman: James Fanson Micro-Precision Control/Structure Interaction Technology for Large Optical Space Systems ............................. 115 Samuel W. Sirlin and Robert A. Laskin Static and Dynamic Characteristics of a Piezoceramic Strut ............. 133 Brett Pokines, W. Keith Belvin, and Daniel J. Inman System Identification and Structural Control on the JPL Phase B Testbed ....... 141 Cheng-Chih Chu, John F. O'Brien, and Boris J. Lurie The Development and Testing of the Lens Antenna Deployment Demonstration (LADD) Test Article .............................. 153 Mark L. Pugh, Robert J. Denton Jr., and Timothy J. Strange V PRECEDING ,;..,,,r-_.-- .....,. Integrated Design of the CSI Evolutionary Structure: A Verification of the Design Methodology ............................ 161 P. G. Maghami, S. M. Joshi, K. B. Elliot, and J. E. Walz Control/Structure Interaction During Space Station Freedom-Orbiter Berthing ..... 181 T. Hua, E. Kubiak, Yeongching Lin, M. Ki]by, and J. Mapar POSTER SESSION Integrated Modeling of Advanced Optical Systems ................. 207 Hugh C. Briggs, Laura Needels, and B. Martin Levine A Comparison of Refined Models for Flexible Subassemblies ............. 215 Suzanne Weaver Smith and David C. Zimmerman The JPL Phase B Interferometer Testbed ..................... 231 Daniel Eldred and Mike O'Neal .... _ .... Design, Analysis and Testing of High Frequency Passively Damped Struts ....... 239 Y. C. Yiu, Porter Davis, Kevin Napolitano, and Rory Ninneman A Comparison of Viscoelastic Damping Models ................... 251 Joseph C. Slater, W. Keith Belvin, and Daniel J. Inman Structural Control Sensors for the Cases GTF ................... 263 H. W. Davis and A. P. Bukley SSF Loads and Controllability During Assembly .................. 277 C. R. Larson, S. Ghofranian, and E. Fujii Evaluation of Inertial Devices for the Control of Large, Flexible, Space-Based Telerobotic Arms .......................... 289 Raymond C. Montgomery, Sean Kenny, Dave Ghosh, and ! Joram Shenhar A Darwinian Approach to Control-Structure Design ................ 303 David C. Zimmerman SESSION HI Chairman: Robert A. Laskin Co-Chairman: Richard Martin CSI Flight Computer System and Experimental Test Results ............. 317 D. W. Sparks, Jr., F. Peri, Jr., and P. Schuler Optical Pathlength Control on the JPL Phase B Interferometer Testbed ........ 343 John Spanos and Zahidul Rahman Dynamic Test Results for the Cases Ground Experiment ............... 359 Angelia P. Bukley, Alan F. Patterson, and Victoria L. Jones Results of the Advanced Space structures Technology Research Experiments (ASTREX) Hardware and Control Development .................. 367 1Lt. Derek F. Cossey vi Design Optimization of the JPL PhaseB Testbed .................. 373 M. Milman, M. Salama, M. Wette, and C. Chu Piezoelectric Devices for Vibration Suppression: Modeling and Application to a Truss Structure ............................... 393 C. C. Won, D. W. Sparks, W. K. Belvin, and J. L. SuUa Part 2* SESSION IV Chairman: Kevin Slimak Co-Chairman: William L. Grantham CSI Related Dynamics and Control Issues in Space Robotics ............. 415 Eric Schmitz and Madison Ramey Optimization for Efficient Structure-Control Systems ................ 435 Hayrani Oz and Narendra S. Khot C-Side: The Control-Structure Interaction Demonstration Experiment ......... 455 James B. Mohl and Hugh W. Davis An Explicit Solution to the Optimal LQG Problem for Flexible Structures With Collocated Rate Sensors .......................... 475 A. V. Balakrishnan A Synopsis of Test Results and Knowledge Gained From the Phase-0 CSI Evolutionary Model .............................. 489 W. Keith Belvin, Kenny B. Elliott, and Lucas G. Horta Controls-Structures-Interaction Dynamics During RCS Control of the Orbiter/SRMS/SSF Configuration ........................ 509 J. A. Schliesing and L. S. Shieh Model Reduction in Integrated Controls-Structures Design .............. 529 P. G. Maghami and S. P. Kenny The Middeck Active Control Experiment (MACE) ................. 551 David W. Miller, Raymond B. Sepe, Daniel Rey, Erik Saarmaa, and Edward F. Crawley SESSION V Chairman: Brantley R. Hanks Co-Chairman: Capt. Chuck Sherwin CSIIMMC Studies for Improving Jitter Performance for Large Multi-Payload Platforms ............................ 569 John Chionchio and Michael Gamek Precision Slew/Settle Technologies for Flexible Spacecraft .............. 617 R. A. Manning and V. A. Spector *Part 2 is presented under separate cover. vii Average-Cost Based Robust Structural Control ..................... 639 Nesbitt W. Hagood Modal Characterization of the ASCIE Segmented Optics Test Bed: New Algorithms and Experimental Results ....................... 665 AlaJn Carrier and Jean-Noel Aubrun Active Suspension Design for a Large Space Structure Ground Test Facility ....... 707 Thomas Lange and Clemens Schlegel Modeling, System Identification, and Control of ASTREX ................ 727 N. S. Abhyankar, J. Ramakrishnan, and K. W. Byun Analysis, Design, and Testing of a Low Cost, Direct Force Command Linear Proof Mass Actuator for Structural Control ...................... 751 G. L. Slater, Stuart Shelley, and Mark Jacobson CSI Flight Experiment Projects of the Naval Research Laboratory ........... 763 Shalom Fisher E = 1E u.o VIII ATTENDEES Nandu S. Abhyankar ScottAdams Bus. Phone: 805-275-5526 Bus. Phone: 215-531-5199 Dynacs Engineering Company General Electric C/O OLAC PL/STS 751 Vandenburg Road Edwards AFB, CA 93523-5000 King of Prussia,PA 19406 Gregory S. Agnes Dr. James J. Allen Bus. Phone: 513-255-5236X408 Bus. Phone: 505-844-6764 Wright Laboratory Sandia National Laboratories WL/FIBGC StructuralDynamics Division,1434 WPAFB, OH 45433 Albuquerque,NM 87185 Dr. Willard W. Anderson Peter M. Bainum Bus. Phone: 804-864-1718 Bus. Phone: 202-806-6612 NASA Langley Research Center Howard University Mail Stop 479 Dept. of Mechanical Engineering Hampton, VA 23665-5225 2300 6th Street, NW Washington, DC 20059 Prof.A. V. Balakrishnan Dr. Michael