Calibration of an innovative rate sensing/momentum management instrument for de-tuned operation and temperature effects

The GyroWheel(TM) is an innovative rate sensing and momentum management instrument. Its design is based on the structure of a dynamically tuned gyro, with the exceptions of a significantly larger rotor and tilt angle sensing, so that the device functions as a precision two axis rate sensing gyroscope. Even though the device is about the same size and power as a standard single axis momentum wheel of the same momentum class, it can also provide the same three axis momentum steering capability as a double-gimbaled control moment gyro. Therefore the GyroWheel(TM) allows for significant mass and cost savings of multiple wheels while still providing similar functionality, which is innovative especially in the field of small satellite attitude determination and control systems (ADCS).;Further mass and cost savings could be achieved through calibration of the system to compensate for changes in the magnetic field strength (B field) due to temperature, making it so that the GyroWheel(TM) system is not required to be part of a satellite's active thermal control system. The GyroWheel(TM) would also provide greater functionality through the calibration of the 2-axis rate sensing for de-tuned conditions involving changes in both the wheel speed and rotor plane tilt from the null position.;This thesis achieves greater accuracy in the performance of the GyroWheel(TM) system through calibration for changes in temperature, wheel speed and rotor plane tilt as well as adding additional ADCS functionality for de-tuned, non-temperature controlled operation.