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29 October 1998 Inertial long-stroke linear actuator for low-frequency vibration control
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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.
© (1998) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
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);

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