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- W853275560 abstract "A comparison of six selected control moment gyro steering laws for use on the HEAO spacecraft is reported. Basic equations are developed to project the momentum and torque of four skewed, single gimbal CMGs into vehicle coordinates. In response to the spacecraft attitude error signal, six algorithms are derived for controlling the CMG gimbal movements. HEAO performance data are obtained using each steering law and compared on the basis of such factors as accuracy, complexity, singularities, gyro hang-up and failure adaption. Moreover, each law is simulated with and without a magnetic momentum management system. The performance of any steering law is enhanced by the magnetic system. Without magnetics, the gimbal angles get large and there are significant differences in steering law performances due to cross coupling and nonlinearities. The performance of the pseudo inverse law is recommended for HEAO." @default.
- W853275560 created "2016-06-24" @default.
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- W853275560 date "1972-07-17" @default.
- W853275560 modified "2023-09-26" @default.
- W853275560 title "A comparison of CMG steering laws for High Energy Astronomy Observatories (HEAOs)" @default.
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