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SIX DEGREE OF FREEDOM ACTIVE VIBRATION DAMPING FOR SPACE APPLICATIONS

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: N/A
Agency Tracking Number: 16922
Amount: $498,552.00
Phase: Phase II
Program: SBIR
Solicitation Topic Code: N/A
Solicitation Number: N/A
Timeline
Solicitation Year: N/A
Award Year: 1992
Award Start Date (Proposal Award Date): N/A
Award End Date (Contract End Date): N/A
Small Business Information
1370 Piccard Dr #210
Rockville, MD 20850
United States
DUNS: N/A
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 () -
Business Contact
Phone: () -
Research Institution
N/A
Abstract

THIS PROJECT DEALS WITH VIBRATION DAMPING IN SPACE APPLICATIONS. THE COMPANY HAS SPENT TWO YEARS INVESTIGATINGAND THEN SIMULATING CONTROL OF A HIGH-SPEED, HIGH-PRECISION,SIX-DEGREE-OF-FREEDOM MOTION STAGE BASED ON A SIX-LEGGED, PARALLEL-LINK MANIPULATOR. THIS SYSTEM EXPLOITS SIX MAGNETOSTRICTIVE ACTUATORS, ONE IN SERIES WITH EACH CONVENTIONAL LEG ACTUATOR. THIS ALLOWS THE CONVENTIONAL ACTUATORS TO PROVIDE SIX-DEGREE-OF-FREEDOM POSITIONING, WHILE THE SIX MAGNETOSTRICTIVE ACTUATORS (WHICH ELONGATE UNDER THE INFLUENCE OF A MAGNETIC FIELD) PROVIDE AN ADDITIONAL SIX-DEGREE-OF-FREEDOM, HIGH-FREQUENCY VIBRATION ISOLATION. MAGNESTOSTRICTIVE ELEMENTS ARE EXTREMELY LIGHT AND CAN EXERT LARGE FORCES AT HIGH FREQUENCIES. THE SIX-LEGGED, PARALLEL-LINK MECHANISM, CALLED A STEWART PLATFORM, PROVIDES A MEANS TO CONVERT THIS ONE-DIMENSIONAL DISPLACEMENT INTO SIX-DIMENSIONAL, HIGH-FREQUENCY, HIGH-PRECISION MOTION. IN CPACE STRUCTURES, THE VIBRATIONALFORCES WILL INCLUDE FLEXING AND TWISTING, AND WE BELIEVE THAT SIX-AXIS COUNTERMOTION IS ESSENTIAL TO IMPLEMENTING HIGH-PERFORMANCE, ACTIVE-VIBRATOR ISOLATION AND DAMPING. THE SYSTEM BEING INVESTIGATED WILL MEET THIS REQUIREMENT. THIS PROJECT DEALS WITH VIBRATION DAMPING IN SPACE APPLICATIONS. THE COMPANY HAS SPENT TWO YEARS INVESTIGATINGAND THEN SIMULATING CONTROL OF A HIGH-SPEED, HIGH-PRECISION,SIX-DEGREE-OF-FREEDOM MOTION STAGE BASED ON A SIX-LEGGED, PARALLEL-LINK MANIPULATOR. THIS SYSTEM EXPLOITS SIX MAGNETOSTRICTIVE ACTUATORS, ONE IN SERIES WITH EACH CONVENTIONAL LEG ACTUATOR. THIS ALLOWS THE CONVENTIONAL ACTUATORS TO PROVIDE SIX-DEGREE-OF-FREEDOM POSITIONING, WHILE THE SIX MAGNETOSTRICTIVE ACTUATORS (WHICH ELONGATE UNDER THE INFLUENCE OF A MAGNETIC FIELD) PROVIDE AN ADDITIONAL SIX-DEGREE-OF-FREEDOM, HIGH-FREQUENCY VIBRATION ISOLATION. MAGNESTOSTRICTIVE ELEMENTS ARE EXTREMELY LIGHT AND CAN EXERT LARGE FORCES AT HIGH FREQUENCIES. THE SIX-LEGGED, PARALLEL-LINK MECHANISM, CALLED A STEWART PLATFORM, PROVIDES A MEANS TO CONVERT THIS ONE-DIMENSIONAL DISPLACEMENT INTO SIX-DIMENSIONAL, HIGH-FREQUENCY, HIGH-PRECISION MOTION. IN CPACE STRUCTURES, THE VIBRATIONALFORCES WILL INCLUDE FLEXING AND TWISTING, AND WE BELIEVE THAT SIX-AXIS COUNTERMOTION IS ESSENTIAL TO IMPLEMENTING HIGH-PERFORMANCE, ACTIVE-VIBRATOR ISOLATION AND DAMPING. THE SYSTEM BEING INVESTIGATED WILL MEET THIS REQUIREMENT.

* Information listed above is at the time of submission. *

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