Fundamentals of Spacecraft Control-Structure Interaction

Discipline: Guidance, Navigation & Control
Webcast Air Date: March 15, 2017

Flexibility and nonlinearities in a spacecraft or launch vehicle’s structure can interact with control loops, potentially impacting pointing performance or creating instabilities or limit cycles. These effects can cause mission degradation or even loss of vehicle. In order to successfully assess the interplay between controls and structures, a cross-discipline design and analysis process must be established and followed throughout the development phase of a program.

This presentation provides an introduction to the fundamentals of control-structure interaction, providing an overview of the design process, some examples and rules of thumb, and references for further study. Topics addressed include structural model accuracy and validation, structural damping, model reduction, model uncertainty, and common control design and analysis techniques.

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