*4.1. Objective Functions*

The objectives of SRM optimization depend on the application and its conditions. For general purpose SRM, average torque *Tav* and efficiency *η* are needed to be maximized and iron weight *Wi* is to be minimized. In some applications, other objectives (i.e., torque ripples, acoustic noise, vibrations ··· , and so forth) are considered.

$$F = \begin{bmatrix} T\_{av}^1 & T\_{av}^2 & T\_{av}^3 & \cdots & T\_{av}^n \\ \eta^1 & \eta^2 & \eta^3 & \cdots & \eta^n \\ W\_i^1 & W\_i^2 & W\_i^3 & \cdots & W\_i^n \end{bmatrix} \tag{17}$$
