This article is concerned with high-precision and fast velocity-tracking control for the harmonic drive-based gimbal system of control moment gyro (CMG). As a major challenge in the controller design, ...

Darrel W. Stephens, former chief of the Charlotte-Mecklenburg Police Department, also pointed to this moment as the baffling ...

The discovery of thousands more galaxies with stars ringing their main disks could help astronomers study galactic evolution ...

Abstract: In this paper, the design and development of a magnetic bearing system which consists of passive magnetic axial/tilting bearing and active two-axial radial magnetic bearing (RMB) used in ...

An international research team reports the discovery of "hidden order" in systems that are disordered in space and time. The paper is published in the journal Nature Materials. The results were ...