A modular parallel robotic system consists of a collection of individual standard units that can be assembled into various robot configurations for a diversity of task requirements. This paper is focused on the design and kinematic analysis of modular reconfigurable parallel robots. A set of fundamental modules is considered. A local frame representation of the ProductOfExponentials (POE) formu...

1 IRCCyN: UMR CNRS 6596, Ecole Centrale de Nantes, Université de Nantes, Ecole des Mines de Nantes Abstract— Presented in this paper is the kinematic analysis of a symmetrical three-degree-of-freedom planar parallel manipulator. In opposite to serial manipulators, parallel manipulators can admit not only multiple inverse kinematic solutions, but also multiple direct kinematic solutions. This pr...

This paper addresses modeling and kinematic analysis of a serial-parallel structure-variable field robot which based on double spirals. Although a few researchers have studied on spiral propulsion mechanism, it is observed in our previous work that the spiral can move forward between gaps of plants and damages to the plants are very little. It can be used to carry measurement devices on investi...

We present design of a compact haptic device in which parallel mechanisms are utilized. The design realizes a large workspace of orientational motion in a compact volume of the device. The device is a parallel-serial mechanism consisting of a modified DELTA mechanism for translational motion and a spatial five-bar gimbal mechanism for orientational motion. We derive an analytical model of stiff...

In this paper, a geometric construction based means of realizing any specified planar compliance for an object held by compliant hand is developed. It shown that the elastic behavior multi-serial parallel mechanism (a multi-finger hand) more simply and equivalently modeled fully-parallel dual . Synthesis procedures are developed realization arbitrary with hands using constraints on dual. Kinema...

The aim of this paper is to characterize the notion of aspect in the workspace and in the joint space for parallel manipulators. In opposite to the serial manipulators, the parallel manipulators can admit not only multiple inverse kinematic solutions, but also multiple direct kinematic solutions. The notion of aspect introduced for serial manipulators in [1], and redefined for parallel manipula...

The aim of this paper is to characterize the notion of aspect in the workspace and in the joint space for parallel manipulators. In opposite to the serial manipulators, the parallel manipulators can admit not only multiple inverse kinematic solutions, but also multiple direct kinematic solutions. The notion of aspect introduced for serial manipulators in [1], and redefined for parallel manipula...