Manoeuvrability is one of the essential keys in the development of improved autonomous
underwater vehicles for challenging missions. In the last years, more researches were …

Low-frequency vibration energy harvesting is a promising technology for providing floating
buoys and small marine robots with sustainable energy from ocean waves. A spherical …

This paper presents a disturbance observer-based linear quadratic Gaussian (LQG) control
strategy to stabilize the flexible spacecraft considering the vibration suppression of flexible …

With respect to spacecraft attitude control, reaction spheres are promising alternatives to
conventional momentum exchange devices for the benefits brought by their 4π rotation …

This paper presents a control system design for a particular form of variable-reluctance
spherical motors, referred to here as a spherical wheel motor (SWM). The method …

This paper proposes a new model for cogging forces of linear motor systems. Sinusoidal
functions of positions are used to effectively capture the largely periodic nature of cogging …

This paper analyzes the electromechanical characteristics of a novel shell-like spherical
induction machine with multiple degrees-of-freedom (DOF), formed by a shell stator and a …

This paper presents an alternative method utilizing real-time measurements of existing rotor
magnetic field in the feedback loop for multi degree-of-freedom (DOF) orientation control of a …

In this article, to overcome the shortcomings of the existing modeling methods, a new
mathematical modeling method of suspension force for a centripetal force type-magnetic …

There are many uncertainties and disturbances in the real dynamic system of a spherical
stepper motor that make traditional control methods with lower precision, such as uncertain …