%0 Journal Article %T Optimal design of 3R manipulators by using classical techniques and simulated annealin %A Lanni %A C. %A Saramago %A S. F. P. %A Ceccarelli %A M. %J Journal of the Brazilian Society of Mechanical Sciences %D 2002 %I Scientific Electronic Library Online %R 10.1590/S0100-73862002000400007 %X in this paper, the optimum design of 3r manipulators is formulated and solved by using an algebraic formulation of workspace boundary. a manipulator design can be approached as a problem of optimization, in which the objective functions are the size of the manipulator and workspace volume; and the constrains can be given as a prescribed workspace volume. the numerical solution of the optimization problem is investigated by using two different numerical techniques, namely, sequential quadratic programming and simulated annealing. numerical examples illustrate a design procedure and show the efficiency of the proposed algorithms. %K robotics %K computational kinematics %K manipulator design %K workspace %K optimization. %U http://www.scielo.br/scielo.php?script=sci_abstract&pid=S0100-73862002000400007&lng=en&nrm=iso&tlng=en