Invention Grant
- Patent Title: Methods and systems for imposing a momentum boundary while reorienting an agile vehicle with control moment gyroscopes
- Patent Title (中): 用控制力矩陀螺仪重新定位敏捷车辆的动量边界的方法和系统
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Application No.: US12611485Application Date: 2009-11-03
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Publication No.: US08014911B2Publication Date: 2011-09-06
- Inventor: Brian Hamilton , Brian Underhill
- Applicant: Brian Hamilton , Brian Underhill
- Applicant Address: US NJ Morristown
- Assignee: Honeywell International Inc.
- Current Assignee: Honeywell International Inc.
- Current Assignee Address: US NJ Morristown
- Agency: Ingrassia Fisher & Lorenz, P.C.
- Main IPC: B64G1/28
- IPC: B64G1/28

Abstract:
Methods and systems are provided for reorienting an agile vehicle, such as a satellite or spacecraft, using a control moment gyroscope (CMG) array. The CMG array comprises a plurality of CMGs onboard the agile vehicle. A method comprises obtaining an input torque command for reorienting the vehicle using the CMG array and, when the angular momentum of the CMG array violates or is approaching a momentum boundary criterion, decreasing the input torque command in the kinetic momentum direction, resulting in a modified torque command, and operating the CMG array using the modified torque command.
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