Disturbance-observer-based fuzzy control for a robot manipulator using an EMG-driven neuromusculoskeletal model
2020 (English)In: Complexity, ISSN 1076-2787, E-ISSN 1099-0526, Vol. 2020, article id 8814460Article in journal (Refereed) Published
Abstract [en]
Robot manipulators have been extensively used in complex environments to complete diverse tasks. The teleoperation control based on human-like adaptivity in the robot manipulator is a growing and challenging field. This paper developed a disturbanceobserver- based fuzzy control framework for a robot manipulator using an electromyography- (EMG-) driven neuromusculoskeletal (NMS) model. The motion intention (desired torque) was estimated by the EMG-driven NMS model with EMG signals and joint angles from the user. The desired torque was transmitted into the desired velocity for the robot manipulator system through an admittance filter. In the robot manipulator system, a fuzzy logic system, utilizing an integral Lyapunov function, was applied for robot manipulator systems subject to model uncertainties and external disturbances. To compensate for the external disturbances, fuzzy approximation errors, and nonlinear dynamics, a disturbance observer was integrated into the controller. Thedeveloped control algorithm was validated with a 2-DOFs robot manipulator in simulation. Theresults indicate the proposed control framework is effective and crucial for the applications in robot manipulator control.
Place, publisher, year, edition, pages
Hindawi Limited , 2020. Vol. 2020, article id 8814460
Keywords [en]
Flexible manipulators, Fuzzy control, Fuzzy logic, Lyapunov functions, Modular robots, Robot applications, Uncertainty analysis, Complex environments, Disturbance observer, External disturbances, Fuzzy approximation, Integral Lyapunov functions, Model uncertainties, Neuromusculoskeletal models, Robot manipulator systems, Industrial manipulators
National Category
Control Engineering
Identifiers
URN: urn:nbn:se:kth:diva-313922DOI: 10.1155/2020/8814460ISI: 000599895700005Scopus ID: 2-s2.0-85097831890OAI: oai:DiVA.org:kth-313922DiVA, id: diva2:1668682
Note
QC 20220613
2022-06-132022-06-132022-06-25Bibliographically approved