Torque Resolver Design for Tendon-Driven Manipulators

Torque control of underactuated tendon-driven fingers

Given an underactuated tendon-driven finger, the finger posture is underdetermined and can move freely (“flop”) in a region of slack tendons. This work shows that such an underactuated finger can be operated in tendon force control (rather than position control) with effective performance. The force control eliminates the indeterminate slack while commanding a parameterized space of desired tor...

Decoupled torque control of tendon-driven fingers with tension management

To facilitate human assembly tasks, Robonaut 2 is equipped with a dexterous, compact hand featuring fingers driven remotely by tendons. This work outlines the force-control strategy for the fingers, which are actuated by an “n +1” tendon arrangement. Existing tendon-driven fingers have applied force control through independent tension controllers on each tendon, in other words, in the tendon sp...

Redundancy resolution of manipulators through torque optimization

Optimal Design of Dexterous Cable Driven Parallel Manipulators

A R T I C L E I N F O A B S T R A C T Article history: Received: July 10, 2009 Received in revised form: November 11, 2009 Accepted: December 2, 2009 Optimal design of parallel manipulators is known as a challenging problem especially for cable driven robots. In this paper, optimal design of cable driven redundant parallel manipulators (CDRPM) is studied in detail. Visual Inspection method is p...

Effect of torque-velocity relationship on manipulability for robot manipulators

This paper presents novel manipulability analysis for robotic manipulators, taking the effect of generating joint torques on generable joint velocities and vice versa into consideration. The conventional manipulability is analysis in velocity domain and cannot concern force effect such as gravity of payload and external forces exerted on the endeffector. Gravitational force has been regarded th...