Effects of source vs. interactive actuator assumptions on modelling of a smart structureEmbedded or internal actuators in a structure are being utilized to perform vibration attenuation, pointing maneuvers, damage control, and other adaptive tasks. The controls-structures-interaction (CSI) design process depends strongly on the coupled dynamic response of the structure and the actuators. A bond graph approach is used to guide this analytical study to uncover the effects of certain generic actuator types on the closed-loop, initial condition control of a single-mode structural model and an eighteen-state model of an active truss. So-called 'flow' and 'effort' source actuator types were studied and were shown to have significant differences in closed-loop response for ranges of initial conditions and system open-loop natural frequencies.
Document ID
19900045825
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Robertshaw, Harry H. (Virginia Polytechnic Inst. and State Univ. Blacksburg, VA, United States)
Wynn, Robert H., Jr. (Virginia Polytechnic Inst. and State Univ. Blacksburg, VA, United States)
Kimiavi, Babak (Virginia Polytechnic Institute and State University Blacksburg, United States)