Cartesian Impedance Control of Redundant and Flexible-Joint Robots

ISBN-13: 9783642088735 / Angielski / Miękka / 2010 / 192 str.

Christian Ott

Opis

The monograph written by Christian Ott is devoted to the classical research topic of impedance control which has recently found new interest after the progress in the mechanical design of lightweight robotic systems with improved actuation and sensing principles. The contents expand the author's doctoral dissertation and are focused on two key issues, namely joint flexibility and kinematic redundancy. A number of effective controllers are developed in theory, based on consolidated approaches such as singular perturbation and passivity, and are tested in extensive experiments on the DLR humanoid manipulator 'Justin', one of the most advanced robotic systems available up to date from a technology and mechatronics standpoint.

Spis treści

Modeling of Flexible Joint Robots.- Cartesian Impedance Control: The Rigid Body Case.- Nullspace Stiffness.- The Singular Perturbation Approach.- Controller Design Based on the Cascaded Structure.- A Passivity Based Approach.- Evaluation.- Applications.- Controller Comparison and Conclusions.

Blurb

This monograph is devoted to the classical topic of impedance control, which has recently seen renewed interest following advances in the mechanical design of lightweight robotic systems with improved actuation and sensing capabilities. After a general introduction into the topics of impedance control, the book focuses on two key issues, namely the treatment of joint flexibility and kinematic redundancy. Several control laws are developed based on mature approaches such as the singular perturbation theory, cascaded control theory, and passivity. The controllers are compared based on their conceptual potential as well as practical implementation issues. The evaluation was performed through several experiments with the DLR arms and the humanoid manipulator 'Justin'.