VSS motion control for a laser-cutting machine

被引:19
作者
Hace, A [1 ]
Jezernik, K [1 ]
Terbuc, M [1 ]
机构
[1] Univ Maribor, Fac Elect Engn & Comp Sci, Inst Robot, SI-2000 Maribor, Slovenia
关键词
position control; drives; servomechanisms; vibrations; variable structure control; chattering; disturbance rejection; robust control;
D O I
10.1016/S0967-0661(00)00089-7
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
An advanced position-tracking control algorithm has been developed and applied to a CNC motion controller in a laser-cutting machine. The drive trains of the laser-cutting machine are composed of belt-drives. The elastic servomechanism can be described by a two-mass system interconnected by a spring. Owing to the presence of elasticity, Friction and disturbances, the closed-loop performance using a conventional control approach is limited. Therefore, the motion control algorithm is derived using the variable system structure control theory. It is shown that the proposed control effectively suppresses the mechanical vibrations and ensures compensation of the system uncertainties. Thus, accurate position tracking is guaranteed. (C) 2001 Elsevier Science Ltd. AII rights reserved.
引用
收藏
页码:67 / 77
页数:11
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