TY - JOUR
T1 - Cascade delayed controller design for a class of underactuated systems
AU - Ochoa-Ortega, G.
AU - Villafuerte-Segura, R.
AU - Luviano-Juárez, A.
AU - Ramírez-Neria, M.
AU - Lozada-Castillo, N.
N1 - Publisher Copyright:
© 2020 G. Ochoa-Ortega et al.
PY - 2020
Y1 - 2020
N2 - In this paper, a delayed control strategy for a class of nonlinear underactuated fourth-order systems is developed. The proposal is based on the implementation of the tangent linearization technique, differential flatness, and a study of the σ-stabilization of the characteristic equation of the closed-loop system. The tangent linearization technique allows obtaining a local controllability property for the analyzed class of systems. Also, it can reduce the complexity of the global control design, through the use of a cascade connection of two second-order controllers instead of designing a global controller of the fourth-order system. The stabilizing behavior of the delayed controller design is supported by the σ-stability criterion, which provides the controller parameter selection to reach the maximum exponential decay rate on the system response. To illustrate the efficiency of the theoretical results, the proposal is experimentally assessed in two cases of study: a flexible joint system and a pendubot.
AB - In this paper, a delayed control strategy for a class of nonlinear underactuated fourth-order systems is developed. The proposal is based on the implementation of the tangent linearization technique, differential flatness, and a study of the σ-stabilization of the characteristic equation of the closed-loop system. The tangent linearization technique allows obtaining a local controllability property for the analyzed class of systems. Also, it can reduce the complexity of the global control design, through the use of a cascade connection of two second-order controllers instead of designing a global controller of the fourth-order system. The stabilizing behavior of the delayed controller design is supported by the σ-stability criterion, which provides the controller parameter selection to reach the maximum exponential decay rate on the system response. To illustrate the efficiency of the theoretical results, the proposal is experimentally assessed in two cases of study: a flexible joint system and a pendubot.
UR - http://www.scopus.com/inward/record.url?scp=85091998155&partnerID=8YFLogxK
U2 - 10.1155/2020/2160743
DO - 10.1155/2020/2160743
M3 - Artículo
AN - SCOPUS:85091998155
SN - 1076-2787
VL - 2020
JO - Complexity
JF - Complexity
M1 - 2160743
ER -