The present invention relates to a gyroscope. Particularly, a ring-shaped rotary core in which magnetic bodies and nonmagnetic bodies are alternately arranged is provided to simplify the structure of the gyroscope and reduce the weight of the gyroscope. Also, due to reduced frictional resistance, noise can be minimized, and the speed at which the gyroscope rotates is markedly increased. As necessary, the gyroscope may be disposed within a sealed container to minimize a frictional loss and improve energy efficiency.

Techniques and architecture are disclosed for providing an optical system having an on-axis, internally mounted inertial measurement unit (IMU). In some cases, an IMU may be mounted within an interior region/cavity of an inner housing, which intern is configured to rotate within, an outer housing. In some instances, a mirror assembly may be operatively coupled with the inner housing and permitted to rotate simultaneously with the IMU. Rotation of the inner housing may be achieved, in some example cases, by use of a suitable motor. In some instances, positioning componentry may be operatively coupled with one or more of the IMU and/or mirror assembly. Improvements in mechanical stability, system dimensions, and/or protection from external/environmental hazards may be realized, in some example cases.

Techniques and architecture are disclosed for providing an optical system having an on-axis, internally mounted inertial measurement unit (IMU). In some cases, an IMU may be mounted within an interior region/cavity of an inner housing, which intern is configured to rotate within, an outer housing. In some instances, a mirror assembly may be operatively coupled with the inner housing and permitted to rotate simultaneously with the IMU. Rotation of the inner housing may be achieved, in some example cases, by use of a suitable motor. In some instances, positioning componentry may be operatively coupled with one or more of the IMU and/or mirror assembly. Improvements in mechanical stability, system dimensions, and/or protection from external/environmental hazards may be realized, in some example cases.

A method of balancing a gimbaled system having a gimbal operatively connected with a motor configured to control a rotation of the gimbal, wherein the gimbal has predetermined compensation locations thereon. The method includes tumbling the gimbal through a gravity field using the motor, sensing motor control current data from the motor, applying a polynomial fit filter to the motor control current data to produce smoothed current data, determining from the smoothed current data an imbalance condition of the gimbal characterized by an imbalance torque and an imbalance angle, and applying an optimization algorithm to determine an optimized combination of one or more compensating weights disposed at one or more of the predetermined compensation locations, wherein the optimized combination is effective to compensate for the imbalance condition. A system for balancing the gimbaled system is al so disclosed.

A method of balancing a gimbaled system having a gimbal operatively connected with a motor configured to control a rotation of the gimbal, wherein the gimbal has predetermined compensation locations thereon. The method includes tumbling the gimbal through a gravity field using the motor, sensing motor control current data from the motor, applying a polynomial fit filter to the motor control current data to produce smoothed current data, determining from the smoothed current data an imbalance condition of the gimbal characterized by an imbalance torque and an imbalance angle, and applying an optimization algorithm to determine an optimized combination of one or more compensating weights disposed at one or more of the predetermined compensation locations, wherein the optimized combination is effective to compensate for the imbalance condition. A system for balancing the gimbaled system is al so disclosed.