Inertial long-stroke linear actuator for low-frequency vibration control

Scott W. Greeley; Clark A. Updike

doi:10.1117/12.328554

29 October 1998 Inertial long-stroke linear actuator for low-frequency vibration control

Scott W. Greeley, Clark A. Updike

Proceedings Volume 3429, Current Developments in Optical Design and Engineering VII; (1998) https://doi.org/10.1117/12.328554
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1998, San Diego, CA, United States

Abstract

Force actuators used for vibration control, such as shakers and proof-mass actuators, typically use single-phase electromagnetic linear motors that have a range of travel limited to a few inches. For proof-mass actuators, the stroke limitation can be especially constraining because it also limits the force output of the actuator at low frequencies. To overcome this low output at low frequency, we have developed an inertial, long stroke, linear actuator (ILSLA). The ILSLA is built around a three-phase linear motor that is driven by a commutating amplifier to achieve strokes of almost unlimited length. Vibration control applications that can benefit from this technology include precision space structures and large- scale robots.

Citation Download Citation

Scott W. Greeley and Clark A. Updike "Inertial long-stroke linear actuator for low-frequency vibration control", Proc. SPIE 3429, Current Developments in Optical Design and Engineering VII, (29 October 1998); https://doi.org/10.1117/12.328554

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