Volume 17, Issue 2 (2017)                   Modares Mechanical Engineering 2017, 17(2): 377-384 | Back to browse issues page

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Barghandan S, Badamchizadeh M, Jahed Motlagh M R. Single-rod electro-hydraulic servo system control with sliding mode controller improved by parallel fuzzy compensators. Modares Mechanical Engineering. 2017; 17 (2) :377-384
URL: http://journals.modares.ac.ir/article-15-937-en.html
Abstract:   (1581 Views)
Sliding mode control technique is one of the well-recognized non-linear control methods. This method has an advantage like robustness against uncertainties. However, chattering phenomenon constraints the performance of closed loop system. To increase its efficiency, a fuzzy compensator is used along with this method. The fuzzy compensator weights are updated by using adaptive rules. The adaptation rate acts as a controlling coefficient. Therefore, the bigger amount of it increases the adaptation speed of weights which leads to the improvement of closed loop system performance. As a result, the probability of instability of closed loop system increases, too. In this study, it has been proposed to use a parallel fuzzy system along with the main fuzzy system in order to control its weights' adaptation. Moreover, a non-linear model of the electro-hydraulic system has been introduced as a case study. Finally, the performance of closed loop system and the efficiency of the proposed methods have been investigated by using numerical simulations.
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Article Type: Research Article | Subject: other......
Received: 2016/12/28 | Accepted: 2017/02/6 | Published: 2017/02/22

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