Manipulability of cooperating robots with unactuated joints and closed-chain mechanisms

Manipulability of Cooperating Robots with Passive Joints

Generation of Manipulability Ellipsoids for Different Configurations Using the Yoshikawa’s Manipulability Index and Manipulability Ellipsoid

In this paper, we study different manipulating ways which can be used in Robotic Devices, to make the Robots Responsive to Obstacles while performing a given Task. Differential kinematics and the kineto-static manipulability indices of multiple cooperating robot arms, including active and passive joints and actuators are given efforts and researched for developing enhancive Robots. Therefore, m...

Kinematic Manipulability of General Constrained Rigid Multibody Systems

This paper extends the kinematic manipulability concept commonly used for serial manipulators to general constrained rigid multibody systems. Examples of such systems include multiple cooperating manipulators, multiple fingers holding a payload, multileg walking robots, and variable geometry trusses. Explicit formulas for velocity and force manipulability ellipsoids are derived and their dualit...

Manipulability of Closed Kinematic Chains

This paper presents a coordinate-invariant differential geometric analysis of manipulability for closed kinematic chains containing active and passive joints. The formulation treats both redundant and nonredundant mechanisms, as well as over-actuated and exactly actuated ones, in a uniform manner. Dynamic characteristics of the mechanism and manipulated object can also be naturally included by ...

Integer-order Versus Fractional-order Adaptive Fuzzy Control of Electrically Driven Robots with Elastic Joints

Real-time robust adaptive fuzzy fractional-order control of electrically driven flexible-joint robots has been addressed in this paper. Two important practical situations have been considered: the fact that robot actuators have limited voltage, and the fact that current signals are contaminated with noise. Through of a novel voltage-based fractional order control for an integer-order dynamical ...