caa a22 4500 475798112 CHVBK 20180406123730.0 cr unu---uuuuu 170329e20000501xx s 000 0 eng 10.1007/s001700050172 doi (NATIONALLICENCE)springer-10.1007/s001700050172 ARX Modelling and Compensation of Roundness Errors in Taper Turning [Elektronische Daten] [E. H. K. Fung, J. C. K. Chan] The forecasting compensatory control (FCC) strategy is successfully applied to the taper turning process to improve the roundness accuracy of the workpiece during cutting. This strategy, which is based on active error sensing, stochastic modelling and forecasting control, is capable of compensating both repeatable and non-repeatable errors. In the stochastic modelling, the effect of cutting force is considered, thus yielding an autoregressive model with exogeneous input (ARX). The resultant force is obtained from the outputs of the piezoelectric force sensor while the relative motion error between the tool and the workpiece is determined by means of a master taper and a capacitive sensor. The forecast error is sent to a piezoelectric actuator that moves the cutter to compensate for the error motion. Practical tests were performed on an experimental lathe with the FCC system using models with different orders and forgetting factors. A maximum improvement of 33% can be achieved by this FCC strategy using ARX (3,3) and forgetting factor of 0.997.: Springer-Verlag London Limited, 2000 Keywords:Active error compensation nationallicence ARX modelling nationallicence Forecasting and taper turning nationallicence Fung E. H. K. The Pao Siu Loong Measurement and Control Laboratory, Department of Mechanical Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong, HK aut Chan J. C. K. The Pao Siu Loong Measurement and Control Laboratory, Department of Mechanical Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong, HK aut https://doi.org/10.1007/s001700050172 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s001700050172 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Fung E. H. K. The Pao Siu Loong Measurement and Control Laboratory, Department of Mechanical Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong, HK aut NATIONALLICENCE 700 1- Chan J. C. K. The Pao Siu Loong Measurement and Control Laboratory, Department of Mechanical Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong, HK aut Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer