Abstract
This thesis investigates mainly the effect of misalignment on the transmission characteristics of the magnetic coupling. The misalignment occurs both in radial and angular directions. The difference of mechanical properties between conventional and magnetic couplings is compared first. Without loss of generality, the axial-type magnetic coupling is adopted herein for the sake of simplicity in design and manufacture. By employing the method of equivalent magnetic charge, the variations of the transmitted torque due to both types of misalignment are calculated. In addition, a parametric study is performed to determine the geometry of the coupling as the material properties such as the residual flux density of permanent magnets are obtained experimentally. For the purpose of verify the static and dynamic characteristics of the designed coupling under the various conditions of misalignment, a test apparatus is constructed. Results show that the maximum transmitted torque and transmission efficiency reduce gradually as the amount of misalignment increases. In addition, the vibration isolation property provided by the magnetic coupling due to its non-contact configuration is also investigated in this research.