Dynamic balancing is a key issue for rotating arc sensor (RAS). It causes vibration during welding, and has an influence on reliable welding signal collection. It is a very significant thing to find a quick design methodology for RAS dynamic balancing structure, especially in restricted space. With the help of PROE and ADAMS virtual prototype technology, and the dynamic balancing analysis of the counterbalance, the unbalanced inertial force and the balance-weight-plane can be determined. Based on PSO (Particle Swarm Optimization) algorithm and the range of parameters according to RAS space dimension, the counterbalance dynamic balancing structure are achieved in which three parameters of the counterbalance are considered. It shows the optimized RAS structure has a lower vibration. The paper provides a novel dynamic balancing design methodology for RAS.
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