Paper Title:
Backstepping Adaptive Control of NC Tool Crossbeam Magnetic Levitation System
  Abstract

At the moving crossbeam levitation system of the gantry NC machine tool, backstepping adaptive mode control was proposed to achieve the high precision and steady levitation of the gap due to the effect of the cutting force on magnetic levitation system. Considering that the speed state variable is nonmeasurable, a state filter K was designed to estimate the parameter on line. And then the adaptive backstepping controller is designed for the nonlinear magnetic levitation system. The system can achieve the global trajectory tracking of the output because of its unique structure and the capacity to the system disturbance, while all the signals of this closed-loop system can remain bounded via the Lyapunouv theory. The simulation results show this method can keep the stability of levitation system. Meantime, this controller has powerful ability of suppressing disturbance and high rigidity.

  Info
Periodical
Advanced Materials Research (Volumes 383-390)
Chapter
Chapter 7: Machining
Edited by
Wu Fan
Pages
1781-1786
DOI
10.4028/www.scientific.net/AMR.383-390.1781
Citation
C. F. Liu, Q. G. Chi, L. M. Wang, Q. D. Guo, "Backstepping Adaptive Control of NC Tool Crossbeam Magnetic Levitation System", Advanced Materials Research, Vols. 383-390, pp. 1781-1786, 2012
Online since
November 2011
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Price
$32.00
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