OUTPUT PREDICTIVE ADAPTIVE-CONTROL OF A SINGLE-LINK FLEXIBLE ARM

被引:4
作者
CETINKUNT, S
WU, SJ
机构
[1] Department of Mechanical Engineering, University of Illinois at Chicago, Chicago, IL
关键词
D O I
10.1080/00207179108953621
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
A non-dimensionalized model is developed for studying the dynamic behaviour of a single-link flexible robot. Its zero-order equivalence in the discrete-time domain is represented in an autoregressive and moving average from. This non-dimensionalized model has the advantage that the results obtained in this way can be applied to a large class of systems of different dimensions. A lattice filter is utilized for the real-time parameter estimation of an ARMA model. A predictive adaptive output feedback controller has been developed and, together with the lattice filter, it forms a special self-tuning regulator. A stability criterion for this control algorithm is also presented. This control algorithm provides an optimal control in the sense that a quadratic cost function is minimized in the control design. To help find proper weighting parameters for this function, a convenient strategy is suggested with the help of a discrete-time root locus. The noise rejection capability of the control algorithm is also investigated. Encouraging simulation results are obtained in the precision, high-bandwidth, tip position control of a flexible one-arm robot.
引用
收藏
页码:311 / 333
页数:23
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