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This paper describes a new automatic balancer that uses magnetic fluid and magnets. The new automatic balancer has a structure for magnetic fluid to levitate magnets used as balance weights, involving the shifting of magnets to correct imbalance. The friction coefficient for the movement of the balance weights is therefore an important factor for the performance of balance correction. A prototype was fabricated to confirm that the balance correcting characteristics are improved by improving this friction coefficient, through an experiment. The automatic balancer of the new structure was confirmed by the experiment, to reduce the friction coefficient relevant to the movement of the magnets at low speeds. The automatic balancer using magnets and magnetic fluids was confirmed to reliably correct the imbalance as it features low friction coefficients and reduces generated vibration to 19% in average. Such results made it apparent that the new automatic balancer offers a superior balance correcting performance.

An automatic balancer using magnetic fluid and magnets (An experiment on balance correcting characteristics)