2021
DOI: 10.21203/rs.3.rs-462277/v1
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Prediction and Compensation Strategy of Contour Error in Multi-Axis Motion System

Abstract: The contour error of the machined parts is an important index to evaluate the accuracy of CNC machining. Considering multi-axis servo control system, a predictive compensation strategy for contour error is presented in this paper. First, the offline identification method is adopted to establish the transfer function of each motion system. In this case, the relationship between the interpolation command and the feedback position of the grating is determined for the selected machine tool. Thus, before machining,… Show more

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“…In Fig. 4, the directional vector of the predicted position pointing to the contour foot point is the estimated contour error at this moment [28]. is obtained by searching in the buffer area as () a R , and then the approximate desired trajectory contour is constructed with two adjacent interpolation points () a R , and the contour foot point is determined by the angular bisector theorem [28]:…”
Section: Optimal Solution Set Of Linear Quadratic For Contour Trackin...mentioning
confidence: 99%
“…In Fig. 4, the directional vector of the predicted position pointing to the contour foot point is the estimated contour error at this moment [28]. is obtained by searching in the buffer area as () a R , and then the approximate desired trajectory contour is constructed with two adjacent interpolation points () a R , and the contour foot point is determined by the angular bisector theorem [28]:…”
Section: Optimal Solution Set Of Linear Quadratic For Contour Trackin...mentioning
confidence: 99%