Numeralitical Modeling of Electro-Magneto-Mechanical Devices: Review and Applications

The modeling of electro-magneto-mechanical devices can focus on a field analysis providing details about the internal operation, or on a circuit representation aimed at analyzing the external interactions. The first is mainly approached using Finite Elements and similar methods, which provide a numerical solution for any operative condition analyzed by suitably partitioning the modeled region. Although more accurate, such approach requires a significant computational burden that grows with complex layouts and non-linear materials. The circuital approach usually involves suited simplifications that permit to obtain analytical solutions standing in a broad range of operative conditions, thus providing useful insights about the external behavior. This paper illustrates the numeralitical method, consisting in the numerical implementation of analytical expressions derived using a unified modeling approach. Several application examples are recalled, showing its potential as a wise compromise between usefulness and computational burden.