TY - GEN
T1 - Proposal of position reconstruction with polynomial fitting approach for precise motion control
AU - Zhu, Hongzhong
AU - Fujimoto, Hiroshi
AU - Sugie, Toshiharu
PY - 2013
Y1 - 2013
N2 - Optical encoders are extensively used for position measurements in motion control systems. The inherent quantization feature of encoders limits the control performance in many applications. This paper shows a way to reconstruct the smooth position signal from the quantized measurements. The method uses a polynomial fitting approach where the degree of polynomial is automatically selected via a convex optimization method. In addition, the information of the plant is exploited by combining an observer. The effectiveness of the proposed method is verified by simulations and experiments using a high-precision linear stage.
AB - Optical encoders are extensively used for position measurements in motion control systems. The inherent quantization feature of encoders limits the control performance in many applications. This paper shows a way to reconstruct the smooth position signal from the quantized measurements. The method uses a polynomial fitting approach where the degree of polynomial is automatically selected via a convex optimization method. In addition, the information of the plant is exploited by combining an observer. The effectiveness of the proposed method is verified by simulations and experiments using a high-precision linear stage.
UR - http://www.scopus.com/inward/record.url?scp=84881069545&partnerID=8YFLogxK
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U2 - 10.3182/20130410-3-CN-2034.00058
DO - 10.3182/20130410-3-CN-2034.00058
M3 - Conference contribution
AN - SCOPUS:84881069545
SN - 9783902823311
T3 - IFAC Proceedings Volumes (IFAC-PapersOnline)
SP - 231
EP - 236
BT - 6th IFAC Symposium on Mechatronic Systems, MECH 2013
PB - IFAC Secretariat
T2 - 6th IFAC Symposium on Mechatronic Systems, MECH 2013
Y2 - 10 April 2013 through 12 April 2013
ER -