Single-phase induction motors have a wide range of domestic and industrial applications. These motors have a squirrel cage rotor and their stator usually has two windings: main and auxiliary. The use of auxiliary winding in the structure of single-phase induction motors creates two unbalance and asymmetric phases. This causes to increase the spatial harmonics of the field in the air gap, and al...

Nowadays study of input voltage quality on induction motors behavior has become a controversial subject due to the wide application of these motors in the industry. The impact of grid voltage fluctuations on the performance of induction motors can be included in this area. The majority of papers devoted to the influence of voltage fluctuations on the induction motors are focusing only on the so...

Planar linear motors have been shown to be capable of fast accurate 2-DOF motions making them useful for assembly tasks. However, the lack of sensing capability has limited their applications. Previous planar motor sensors have been precise but bulky and sensed only a single direction of motion. We present a small integrated 3-DOF sensor capable of 0.2 m position resolution (1 ) which has been ...

Industrial Sawyer motor technology has existed for nearly three decades, traditionally being operated as open-loop positioners. Such systems can attain micron level motion resolution and open-loop repeatability of 10 m. This paper outlines a optical sensing technique for Sawyer motors which is capable of sub-micron resolution. Such a sensor can easily be integrated into a motor enabling closed-...