A novel hollow-ring permanent magnet brake integrated in robot joints is proposed, which allows the brake to require much less axial space and provides more than 1.5 times braking torque for the same volume as the conventional electromagnetic-spring friction brake. A coupled dynamics model of the proposed brake is developed from machine-electric-magnetic aspects. The 3D model of the brake is simulated through finite-element software. The theoretical models are verified through experiments.

Since the common layout of Precise cable drive, Single-Input Single-Output (SISO) spur gear configuration, suffers from low torque-to-weight ratio and loose structure, this paper proposes a novel transmission configuration. It combines the advantages of Multiple-Input Single-Output (MISO) configuration and bevel gear configuration. The proposed technologies could have strong technological implications in some special applications such as stabilized sighting system or infrared imaging seeker.

This article proposes a novel monolithic compliant spatial parallel XY stage (SPXYS). An important feature of the SPXYS lies in that it can deliver centimeter travel range and sustain large out-of-plane payload while possessing a compact structure, which makes the SPXYS suitable for some special applications such as Ultra-Violet Nanoimprint Lithography and soft-contact lithography.