Specific accelerating factor: One more tool in motor sizing projects

This work is focused on improvement of motor sizing methods based on the accelerating factor[4]. This quantity is used to seek commercial motor-gearbox couples for mechatronics; unfortunately, it does not allow comparison of different acceptable solutions. The designer must therefore make a choice based on experience, instinct and poor data of catalogues. A per-unit-length value of the accelerating factor (specific accelerating factor) gives instead a rough but consistent idea of a servo-motor quality, for a more systematic and thoughtful selection. The specific accelerating factor represents a “benchmark” for a motor, it's easy to calculate from datasheets and was defined using well known notions of electromechanical design (under certain assumptions).