TY - JOUR
T1 - Identification and control of class of non-linear systems with non-symmetric deadzone using recurrent neural networks
AU - Pérez-Cruz, José Humberto
AU - Chairez, Isaac
AU - De Jesús Rubio, Jose
AU - Pacheco, Jaime
PY - 2014
Y1 - 2014
N2 - In this study, a neuro-controller with adaptive deadzone compensation for a class of unknown SISO non-linear systems in a Brunovsky form with uncertain deadzone input is presented. Based on a proper smooth parameterisation of the deadzone, the unknown dynamics is identified by using a continuous time recurrent neural network whose weights are adjusted on-line by stable differential learning laws. On the basis of this neural model so obtained, a feedback linearisation controller is developed in order to follow a bounded reference trajectory specified. By means of Lyapunov analysis, the boundedness of all the closed-loop signals as well as the weights and deadzone parameter estimations is rigorously proven. Besides, the exponential convergence of the actual tracking error to a bounded zone is guaranteed. The effectiveness of this scheme is illustrated by a numerical simulation.
AB - In this study, a neuro-controller with adaptive deadzone compensation for a class of unknown SISO non-linear systems in a Brunovsky form with uncertain deadzone input is presented. Based on a proper smooth parameterisation of the deadzone, the unknown dynamics is identified by using a continuous time recurrent neural network whose weights are adjusted on-line by stable differential learning laws. On the basis of this neural model so obtained, a feedback linearisation controller is developed in order to follow a bounded reference trajectory specified. By means of Lyapunov analysis, the boundedness of all the closed-loop signals as well as the weights and deadzone parameter estimations is rigorously proven. Besides, the exponential convergence of the actual tracking error to a bounded zone is guaranteed. The effectiveness of this scheme is illustrated by a numerical simulation.
UR - http://www.scopus.com/inward/record.url?scp=84893941054&partnerID=8YFLogxK
U2 - 10.1049/iet-cta.2013.0248
DO - 10.1049/iet-cta.2013.0248
M3 - Artículo
SN - 1751-8644
VL - 8
SP - 183
EP - 192
JO - IET Control Theory and Applications
JF - IET Control Theory and Applications
IS - 3
ER -