期刊
JOURNAL OF INTELLIGENT & FUZZY SYSTEMS
卷 33, 期 4, 页码 2047-2057出版社
IOS PRESS
DOI: 10.3233/JIFS-161538
关键词
Underactuated robot; nonlinear system; fuzzy logic system; type-2 fuzzy logic control
资金
- National Natural Science Foundation (NNSF) of China [51275107]
Underactuated mechanical systems have their own difficulties within the control criterion. As a particular and complex underactuated mechanical system, underactuated truss-like robotic finger(UTRF) is studied by establishing its dynamic model. The control problems include high nonlinearity, model inaccuracy and uncertainties. Type-2 fuzzy logic control method is supposed to be a proper way to solve these problems, because fuzzy logic control itself does not depend on an accurate model of the controlled object, and type-2 fuzzy logic control is able to handle uncertainties. Based on a brief introduction on type-2 fuzzy logic systems, an interval type-2 fuzzy logic controller is designed for UTRF to accomplish the goal of stabilization in its equilibrium point. As an extension of the type-1 fuzzy, the performances of the proposed controller are compared with the type-1 one case to show the advantages of the type-2 fuzzy. Simulation results show that the designed interval type-2 fuzzy logic controller is correct and effective and has better performances than that of type-1 fuzzy control.
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