ABSTRACT
Electromechanical systems must be analyzed with the ultimate objective to examine, assess, evaluate, and optimize their performance approaching the achievable capabilities under the physical (electromagnetic, mechanical, thermal, etc.), technological, and other limits. Various design tasks should be performed, for example, modeling, simulation, optimization, and so on. The design and analysis of electromechanical systems and devices are challenging problems because complex electromagnetic, mechanical, thermodynamic, vibroacoustic, and other phenomena and effects must be studied and described. High-fidelity and lamped-parameter mathematical models, developed utilizing physical laws, can be applied. For moderate complexity electromechanical systems, experienced designers usually can accomplish a near-optimal design utilizing their experience, expertise, and practice. Using the cornerstone physical laws, some performance estimates (efficiency, force/torque and power densities, settling time, etc.) can be estimated avoiding high-fidelity modeling and heterogeneous simulations. However, many key performance measures and capabilities (efficiency, stability, robustness, sensitivity, dynamic and steady-state accuracy, acceleration rate, dynamic responses, sampling period, etc.) may not be accurately determined by even experienced designers without a coherent analysis which is centered on describing and modeling of various physical phenomena taking into account device physics and limits imposed. To perform sound quantitative and qualitative analysis and design, applying laws of physics, mathematical models (system and device descriptions in the form of differential and constitutive equations) must be developed with minimum level of simplifications and assumptions. These models must coherently describe the baseline phenomena (time-varying fields, energy conversion, torque or force development, voltage induction, etc.), effects, and processes accurately describing the system behavior and device evolution. The device-level physics and system organization must be examined.
