%0 Journal Article %T Position control for a two %A Ling Zhao %A Linlin Ge %A Tao Wang %J Transactions of the Institute of Measurement and Control %@ 1477-0369 %D 2018 %R 10.1177/0142331216683246 %X In this paper, position control is addressed for a two-joint robot finger system driven by pneumatic artificial muscles. It is hard to obtain high precision control for a two-joint robot finger system due to coupling and nonlinearities. A two-input and two-output decoupling problem is solved via active disturbance rejection control without complicated calculations. An extended state observer is designed to estimate the nonlinearities. Furthermore, the stability of the two-joint robot finger system is shown by a back-stepping method. Results from experiments are demonstrated to show the effectiveness of the proposed control approach %K Position control %K pneumatic artificial muscles %K two-joint finger robot systems %K decoupling control %K back-stepping control %U https://journals.sagepub.com/doi/full/10.1177/0142331216683246