Generalized predictive cross-coupling position control of biaxial motion system
CHEN Wei
LIU Xu
SHI Ting-na
XIA Chang-liang
Abstract：In the biaxial motion system,the main objective of position control is to reduce the contour error and improve trajectory tracking capability.In the paper,a generalized predictive cross-coupling control strategy(GPCCC)is proposed for the steady-state accuracy and dynamic performance.First of all,the generalized predictive algorithm is applied to the biaxial control.The biaxial performance to track the given trajectory can be improved by the procedures of multi-step prediction,rolling optimization and feedback correction.And then the contour error is taken as the compensation component in the cross-coupling structure to correct the given trajectory of the generalized predictive control.The experiment is carried on a biaxial motion system driven by two PMSMs.The results show that the proposed control strategy can guarantee the trajectory tracking accuracy and the dynamic response speed,especially at the turning point,the contour error is obviously smaller than that of traditional PID cross-coupling position control.
Keywords：permanent magnet motorsbiaxial motion systemgeneralized predictive cross-coupling controltrajectory tracking
Publication Date：2018-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：8( 399-406 )