Transactions of the Institute of Systems, Control and Information Engineers
Online ISSN : 2185-811X
Print ISSN : 1342-5668
ISSN-L : 1342-5668
Practical Fuzzy Modeling of Aerial Working Platform
Shinji NOGUCHIKazuaki KAGAMIHARATakuya KAMANOTakayuki SUZUKITakashi YASUNO
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1998 Volume 11 Issue 12 Pages 665-672

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Abstract

One of fundamental problems in design of construction machines is to make a practical model which represents the relation between input and output signals. For an example, an excellent model is useful for designing superior controllers which result in automation and simplification of operations. However, it is difficult to make a detailed mathematical model for construction machines because of nonlinear characteristics of hydraulic actuators and its complicated mechanical structures.
In this paper, a fuzzy model for an aerial working platform is described. The fuzzy model in each driving axis is based on fuzzy rules and approximated dynamic models which are measured in advance under different operating conditions. The fuzzy rules represent not only the static nonlinear characteristics of actuator but also the effect of the approximated dynamic models on the output under the different operating conditions, and are automatically adjusted by a tuning law so that modeling error decreases. The effectiveness of the proposed fuzzy model is demonstrated by experimental results.

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