Abstract
To reduce the contour error of the part machine, for the linear servo drive system, a robust tracking control strategy based on combining zero phase error tracking control (ZPETC) with the disturbance observer (DOB) is proposed. The zero phase error tracking controller is designed to ensure that the system has fast tracking performance and implements exactly tracking; while the DOB can overcome the influences of the uncertainties of the parameters perturbation, the external load disturbances, unmodelled dynamic and mechanical nonlinearity etc. DOB can compensate for each axis according to predicted disturbance information to eliminate the influences of the disturbance to the system, thus the stability and robustness of the system are obtained. The simulation results show that the control scheme not only can enhance the fast tracking performance in the linear servo system, but also has a strong robustness to parametric variations and resistance disturbances. Therefore the contour error is reduced effectively, and the precision of the contour machining is improved greatly.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
