This post is an excerpt from the journal ISA Transactions.  All ISA Transactions articles are free to ISA members, or can be purchased from Elsevier Press.

Abstract: This paper presents a method to model and design servo controllers for flexible ball screw drives with dynamic variations. A mathematical model describing the structural flexibility of the ball screw drive containing time-varying uncertainties and disturbances with unknown bounds is proposed. A The machine for tool sharpeningmode-compensating adaptive backstepping sliding mode controller is designed to suppress the vibration. The time-varying uncertainties and disturbances represented in finite-term Fourier series can be estimated by updating the Fourier coefficients through function approximation technique. Adaptive laws are obtained from Lyapunov approach to guarantee the convergence and stability of the closed loop system. The simulation results indicate that the tracking accuracy is improved considerably with the proposed scheme when the time-varying parametric uncertainties and disturbances exist.

 Free Bonus! To read the full version of this ISA Transactions article, click here.

ISA membership entitles you to free access to all ISA Transactions articles plus a wealth of technical content, industry information, free webinars, training opportunities, program discounts, certification and licensure and professional networking.

Click here to join ISA … learn, advance, succeed!


2006 Elsevier Science Ltd. All rights reserved.

Pin It on Pinterest