Title : 
Controlled Synchronization of Heterogeneous Robotic Manipulators in the Task Space
         
        
            Author : 
Liu, Yen-Chen ; Chopra, Nikhil
         
        
            Author_Institution : 
Dept. of Mech. Eng., Univ. of Maryland, College Park, MD, USA
         
        
        
        
        
        
        
            Abstract : 
Passivity-based control has emerged as an important paradigm for synchronization of networked robotic systems. Despite the practical utility of task-space algorithms, the previous results focused on joint-space synchronization and were primarily derived for kinematically identical manipulators. Hence, in this paper, the problem of task-space synchronization of (possibly redundant) heterogeneous robotic systems is studied. By exploiting passivity-based synchronization results that are developed previously, an adaptive control algorithm is proposed to guarantee task-space synchronization of networked robotic manipulators in the presence of dynamic uncertainties and time-varying communication delays. To demonstrate the efficacy of the proposed framework, numerical simulations and experiments are conducted with redundant and nonredundant manipulators, respectively.
         
        
            Keywords : 
adaptive control; delays; manipulator dynamics; networked control systems; numerical analysis; redundant manipulators; synchronisation; time-varying systems; adaptive control algorithm; dynamic uncertainties; heterogeneous robotic system; networked robotic manipulator; nonredundant manipulator; numerical simulation; passivity based synchronization; passivitybased control; redundant manipulator; task space algorithm; task space synchronization; time varying communication delay; Delay; Manipulator dynamics; Nickel; Synchronization; Trajectory; Redundant manipulator; synchronization; task-space tracking; time-varying delay;
         
        
        
            Journal_Title : 
Robotics, IEEE Transactions on
         
        
        
        
        
            DOI : 
10.1109/TRO.2011.2168690