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Proceedings Paper

Linear precision inertial actuator built for low-impact in-situ installation on structures with vibration problems
Author(s): Clark A. Updike; Scott W. Greeley; James A. King
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Paper Abstract

In the process of designing a control actuator for a vibration cancellation system demonstration on a large, precision optical testbed, it was discovered that the support struts on which the control actuators attach could not be disassembled. This led to the development of a Linear Precision ACTuator (LPACT) with a novel two piece design which could be clamped around the strut in-situ. The design requirements, LPACT characteristics, and LPACT test results are fully described and contrasted with other earlier LPACT designs. Cancellation system performance results are presented for a 3 tone disturbance case. Excellent results, on the order of 40 dB of attenuation per tone (down to the noise floor on two disturbances), are achieved using an Adaptive Neural Controller (ANC).

Paper Details

Date Published: 29 October 1998
PDF: 11 pages
Proc. SPIE 3429, Current Developments in Optical Design and Engineering VII, (29 October 1998); doi: 10.1117/12.328557
Show Author Affiliations
Clark A. Updike, Planning Systems, Inc. (United States)
Scott W. Greeley, Planning Systems, Inc. (United States)
James A. King, Planning Systems, Inc. (United States)


Published in SPIE Proceedings Vol. 3429:
Current Developments in Optical Design and Engineering VII
Alson E. Hatheway; Robert E. Fischer; Malachy McConnell; Lawrence M. Germann; Lawrence M. Germann; Alson E. Hatheway; Malachy McConnell; Warren J. Smith, Editor(s)

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