in this paper, controlling the gyros with linear plus cubic damping is considered. hence, an adaptive control algorithm is proposed to overcome the uncertainties in model parameters and the chaotic behavior of gyroscopes. it is noted that for general applications dynamic model coefficient of gyros is not precisely determined, on the other hand, with respect to a particular coefficient gyroscope...

Optical gyroscopes based on the Sagnac effect have been mainstay of inertial navigation in aerospace and shipping for decades. These are typically realized either as ring-laser (RLGs) or fiber-optic (FOGs). With recent rapid progress field ultrahigh-quality optical whispering-gallery mode ring microresonators, attention has focused development microresonator-based a more compact alternative to ...

A metallic cylindrical resonator is a well-known base detail of the significant part Coriolis vibratory gyroscopes (CVG) [1] including MEMS gyro. It own parameters just after mechanical manufacture in main are determine an advisability further utilize and future gyroscope accuracy potential. Initial testing CVG resonators directly their often done using optical method [2,3] or acoustic [4,5]. U...

The design and initial operation of a vertical square He-Ne ring laser G0 with a perimeter of 14 m is discussed. This builds on earlier demonstrations of the feasibility of large ring lasers (perimeter approximately 4 m) for single-mode gyroscope operation and with lesser pulling than navigation gyroscopes. With servoing of the rf excitation to yield single-mode operation, G0 gave a quality fac...

Intelligent autonomous navigation in a large-scale and unknown indoor environment is an important problem in mobile robotics. For a car-like mobile robot with a racing car platform, the movement control concept is similar to that of a car. The autonomous features enable robots to control own motion without human interference. Three autonomous features are addressed in this thesis; obstacle avoi...

To avoid the oscillation of four unequal masses seen in previous triaxial linear gyroscopes, a modified silicon triaxial gyroscope with a rotary wheel is presented in this paper. To maintain a large sensitivity and suppress the coupling of different modes, this novel gyroscope structure is designed be perfectly symmetrical with a relatively large size of about 9.8 mm × 9.8 mm. It is available f...

The accuracy of attitude determination plays a key role in the improvement of surveying and mapping accuracy for high-resolution remote-sensing satellites, and it is a bottleneck in large-scale satellite topographical mapping. As the on-board energy is constrained and the performance of an attitude-measurement device is limited, the attitude acquired is discretely sampled with a settled time in...