TY - GEN
T1 - Influence of position measuring errors on speed ripple in servo drives
AU - Wittmann, Josef
AU - Hagl, Rainer
AU - Kennel, Ralph
N1 - Publisher Copyright:
© 2016 IEEE.
PY - 2016/7/28
Y1 - 2016/7/28
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.
AB - 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 - Position measuring error
KW - number of signal periods
KW - servomotor
KW - signal quality
KW - speed control
KW - speed ripple
UR - http://www.scopus.com/inward/record.url?scp=84994086541&partnerID=8YFLogxK
U2 - 10.1109/SPEEDAM.2016.7525816
DO - 10.1109/SPEEDAM.2016.7525816
M3 - Conference contribution
AN - SCOPUS:84994086541
T3 - 2016 International Symposium on Power Electronics, Electrical Drives, Automation and Motion, SPEEDAM 2016
SP - 1272
EP - 1278
BT - 2016 International Symposium on Power Electronics, Electrical Drives, Automation and Motion, SPEEDAM 2016
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2016 International Symposium on Power Electronics, Electrical Drives, Automation and Motion, SPEEDAM 2016
Y2 - 22 June 2016 through 24 June 2016
ER -