Sliding mode tracking for pneumatic muscle actuators in opposing pair configuration

被引:101
作者
Lilly, JH [1 ]
Yang, L [1 ]
机构
[1] Univ Louisville, Dept Elect & Comp Engn, Louisville, KY 40292 USA
关键词
actuators; pneumatic systems; robots; sliding mode control; variable structure systems;
D O I
10.1109/TCST.2005.847333
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
Sliding mode techniques are applied to pneumatic muscle actuators arranged in an agonist/antagonist, or opposing pair configuration. The pneumatic muscle (PM) pair actuates a planar elbow manipulator, with PMs in place of bicep and tricep. The control objective is elbow angle tracking under load. A nonlinear mathematical model is derived for this system and a sliding mode controller is designed to give elbow angle tracking to within a guaranteed accuracy despite modeling errors. Static pressure requirements are also derived for stable arm behavior in the absence of a control signal. Stability results are derived, and the results of simulation studies are presented. The simulation studies also address the effects of PM heating.
引用
收藏
页码:550 / 558
页数:9
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