Liquid Sloshing Suppression Using Fuzzy Logic Control
Date Issued
2007
Date
2007
Author(s)
Hong, Zhao-Liang
DOI
zh-TW
Abstract
In this thesis, a pendulum-type model is constructed to represent the liquid sloshing behavior in a rectangular container, caused by the motion of a one dimension ball-screw table. A fuzzy rule-based controller is adopted to damp the liquid sloshing and keep the cart near the center of the ball-screw table. In the controller, two fuzzy sub-controllers are designed to respectively control the liquid sloshing and the table displacement, and the sloshing control rules are based on pendulum model. The effectiveness of the adopted method is demonstrated through simulations and experimental results.
In the experiment, it is seen that friction exists unavoidably in the ball-screw table. The nonlinear behaviors induced by friction would limit the performance of the system. In order to get a better performance, the LuGre model of friction is used for designing a compensation scheme.
Subjects
滾珠導螺桿
模糊控制器
液面擾動
摩擦
LuGre模型
ball-screw table
fuzzy controller
liquid sloshing
friction
LuGre model
Type
thesis
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