Mixed Control Moment Gyro and Momentum Wheel Attitude Control Strategies

• Main Author: Skelton, Claude Eugene II
• Other Authors: Aerospace and Ocean Engineering
• Format: Others
• Published: Virginia Tech 2011
• Subjects: momentum wheel; control moment gyro; spacecraft simulator; attitude control
• Online Access: http://hdl.handle.net/10919/9677; http://scholar.lib.vt.edu/theses/available/etd-12232003-100311

Attitude control laws that use control moment gyros (CMGs) and momentum wheels are derived with nonlinear techniques. The control laws command the CMGs to provide rapid angular acceleration and the momentum wheels to reject tracking and initial condition errors. Numerical simulations of derived control laws are compared. A trend analysis is performed to examine the benefits of the derived controllers. We describe the design of a CMG built using commercial off-the-shelf (COTS) equipment. A mixed attitude control strategy is implemented on the spacecraft simulator at Virginia Tech. === Master of Science