On adaptive synchronization control of coordinated multirobots with flexible/rigid constraints

In assembly tasks performed by coordinated multiple robots, the contact force at the end-effector of each robot should be a function of the states of all the robots, and further be a function of the control inputs when subject to rigid constraints. After a discussion on the algebraic loop issue caused by using direct force cancellation, an adaptive synchronization control algorithm is proposed in this paper, which particularly addresses the dual-arm case subject to both flexible and rigid constraints. Extension of the result to the multiple-arm case is also presented.