Abstract: Permanent magnetic linear motors(PMLMs) are easier to accelerate and achieve higher precision than rotary motors. Hence, they have a broad range of applications in the manufacturing industry and other motion control fields. Owing to the structural variation, however, the models of permanent magnet linear motors and rotary motors are different. As a result, their motion control systems...

Planar linear motors, e.g. Sawyer motors, operate in an open-loop stepping manner. This mode of operation makes them i) susceptible to loss of steps, ii) unable to reject external disturbances, iii) unable to provide controlled forces, and iv) unable to provide high sti ness. These limitations, in turn, restrict their usefulness in a wide range of robotic applications. Suitable position sensing...

a new approach for propulsion system layout that increases power and enhances the efficiency of submarine propulsion system is proposed.using our method,the efficiency and power of the system enhances without increasing volume and weight. this layout improves the performance compared to the usual layout, which employs double-armature motors in cruise speed where efficiency is more critical. thi...