Abstract
A simple method is presented for controlling the motion and gripping force in dual flexible manipulators without calculating inverse dynamics. The gripping force is converted into a velocity vector according to the proposed force/velocity conversion law considering the flexibility of the manipulator. The velocity vector of contact point is calculated from the velocity of the object. The desired velocity vector is obtained as a sum of the above two velocity vectors, and is converted into angular velocity vector considering defectional velocity of the flexible links. The desired angular velocity vector is obtained as a sum of the above angular velocity vector and strain feedback term. Coordinative control is performed using DC motors whose desired values are equal to the above desired angular velocity vector. The characteristics of gripping force response of control system is also considered. Computer simulations and experimental analyses are carried out to clarify the validity of the proposed method.
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