“…Because of such characteristics, an inverted pendulum is used as a benchmark system for evaluating different control methods. Hence, different types of the inverted pendulum system have been taken into consideration by researchers in the control field (Chen and Wen, 2010;El-Hawwary et al, 2006;Harrison, 2003;Huang and Huang, 2000;Mahmoodabadi et al, 2013b;Siuka and Scho¨berl, 2009;Tao et al, 2008;Walker et al, 1991;Wang, 2011Wang, , 2012, are only 10 among all the papers considering the inverted pendulum system). A double inverted pendulum by the approach of feedback linearization was controlled by Walker et al (1991).…”