1 May 1996 High-performance passive viscous isolator element for active/passive (hybrid) isolation
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Abstract
A high performance passive isolator has been developed for a multiaxis isolation system for vibration isolation of an optical payload. This passive isolator will be used along with an active element to provide improved vibration isolation performance over previous isolators. The isolator has been designed using ideas developed previously for 'tuned' three parameter passive isolators. The isolator has also been developed offering the lowest system passive break frequencies structurally feasible for the lightweight optical payload. The implementations of these passive isolator design considerations complement the active portion of the system, and also provide the best passive isolation at the higher frequencies long after the active system has 'rolled off.' The mathematics used to design the isolator as well as the isolator's physical attributes are discussed. The unique design challenges of incorporating the passive element with the active, forming one 'hybrid' D-strut$TM, also are discussed. Finally, actual test data from isolator testing are compared to predicted performance, verifying the isolator's exceptional performance and predictability.
© (1996) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Torey Davis, L. Porter Davis, Jeanne M. Sullivan, Terry Hoffman, Alok Das, "High-performance passive viscous isolator element for active/passive (hybrid) isolation", Proc. SPIE 2720, Smart Structures and Materials 1996: Passive Damping and Isolation, (1 May 1996); doi: 10.1117/12.239095; https://doi.org/10.1117/12.239095
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