Abstract
A new method is offered for gross-motion control of articulated industrial robots to reduce the computational requirements otherwise needed for real-time feed-forward control. The basic idea is the on-line measurement of the joint torques - simultaneously with the measurement of joint displacements and velocities. The actual inertial load is approximated by computation and all the other disturbing loads are derived from the joint torque measurements through extrapolation. The feasibility of this method is tested on a 3 dof mathematical model, and its performance is compared against that of the “Computed torque drive method” at different working conditions.
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