Title: A new approach for obtaining the dynamic balancing conditions in serial mechanisms

Authors: André Garnier Coutinho; Tarcisio Antonio Hess Coelho

Addresses: Department of Mechatronics and Mechanical Systems Engineering, Escola Politecnica, University of Sao Paulo, Brazil ' Department of Mechatronics and Mechanical Systems Engineering, Escola Politecnica, University of Sao Paulo, Brazil

Abstract: Adaptive balancing means that the mechanical structure of the manipulator is modified in order to achieve the decoupling of dynamic equations. This work deals with a systematic formulation for the adaptive balancing. Basically, two traditional balancing techniques are employed here: the addition of counterweight and counter-rotating disks coupled to the moving links. In addition, the feasibility of the dynamic decoupling for three distinct types of serial manipulators is discussed regarding the achievement of such balancing and the complexity level of the modified mechanical structure. The balancing conditions are developed here for 3-dof spatial and planar open-loop kinematic chain mechanisms, whose topologies are composed of revolute and prismatic joints.

Keywords: adaptive balancing; balancing conditions; robot design; dimensional synthesis; dynamic balancing; dynamic decoupling; robotics; serial mechanisms; spatial mechanisms; counterweights; counter-rotating disks; serial manipulators; kinematic chain mechanisms; revolute joints; prismatic joints; mechanism design.

DOI: 10.1504/IJMRS.2016.077036

International Journal of Mechanisms and Robotic Systems, 2016 Vol.3 No.1, pp.32 - 47

Received: 12 May 2015
Accepted: 23 Oct 2015
Published online: 18 Jun 2016 *

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