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T. Riel, R. Saathof, A. Katalenic, S. Ito, G. Schitter:
"Noise analysis and efficiency improvement of a pulse-width modulated permanent magnet synchronous motor by dynamic error budgeting";
Mechatronics, 50 (2017), 9 pages.

This paper presents the mechatronic analysis and performance estimation of a pulse-width modulated permanent
magnet synchronous motor (PMSM), which is part of a direct-drive rotational servo system. Physical modeling
together with dynamic error budgeting are applied to identify the minimal required switching frequency that
maximizes the energy efficiency of the system while maintaining the required precision. The analysis is carried
out for a wide velocity range and considers various friction phenomena. The disturbances induced by the
switched amplifier are also considered and compared to a linear amplifier. The accuracy of the derived model
and analysis is experimentally verified over the entire velocity range as well as for the considered range of
switching frequencies.

Dynamic error budgeting, Pulse-width modulation, Performance analysis Error estimation, Servo systems, Permanent magnet motors

http://dx.doi.org/10.1016/j.mechatronics.2017.10.006