TY - CHAP A1 - Wittmann, Josef A1 - Hagl, Rainer A1 - Kennel, Ralph T1 - Influence of Position Measuring Errors on Speed Ripple in Servo Drives T2 - 2016 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM, Capri, Italy N2 - Position measuring devices with sinusoidal measuring signals are widely used in position-controlled servo drives in industrial automation, e.g., for machine tools or semiconductor production machines. Usually, the feedback signal for the speed or velocity controller is calculated from the measured position. Therefore, position measuring errors affect these control loops. This study presents an analytic error model that considers non-ideal sinusoidal measuring signals with basic deviations (amplitude differences, offset errors, and phase shift) as well as signal harmonics. The model was used to systematically investigate the influence of signal quality and the number of signal periods from position measuring devices on speed ripple, across a wide range of speeds. A test stand with a high-resolution reference angle measuring device was used to confirm the results. KW - Elektrische Antriebssysteme KW - LeistungselektronikĀ  KW - Automatisierungstechnik KW - Power Electronics KW - Electrical Drives KW - Automation and Motion Y1 - 2016 UR - https://doi.org/10.1109/SPEEDAM.2016.7525816 ER -