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Robust design of independent joint controllers with experimentation on a high-speed parallel robot

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4 Author(s)
P. Chiacchio ; Dipartimento di Inf. e Sistemistica, Napoli Federico II Univ., Italy ; F. Pierrot ; L. Sciavicco ; B. Siciliano

A linear independent joint control scheme is proposed. The design is made robust by closing another feedback loop that uses acceleration information besides the typical position and velocity loops. Reconstruction of acceleration measurements is performed via a suitable state-variable filter. Linear feedforward compensation is used to improve tracking performance of the closed-loop scheme. The control algorithm is tested first in a discrete-time simulation on a single-joint drive system with imposed disturbance torques. Then, real-time implementation on a high-speed parallel robot is presented. The experimental results demonstrate the effectiveness of the proposed technique

Published in:

IEEE Transactions on Industrial Electronics  (Volume:40 ,  Issue: 4 )