Measurement of Electric Contact Phenomenon Using LiNbO_3 Piezoelectric Actuator

概要

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An Au-Au contact gap was controlled by a LiNbO_3 piezoelectric actuator. The control accuracy of the actuator was in the submicron range. Neither hysteresis nor creep was observed. Contact voltage, contact current, displacement of electrodes, and driving voltage of the actuator were continuously recorded for the opening contact. Measurement data for 1,500 contact operations (100 operations × l5 steps of current value) were processed by a computer. Discharge and bridge phenomena were analyzed. For the electrical discharge phenomena, arc ignition probability, arc duration, and arc disappearance distance were derived. The length of the bridge and the bridge resistance were derived for the bridge phenomenon. In addition, the contact load was estimated from measurement data and numerical calculations. Our measurements show the possibility of data correlation among the factors affecting contact phenomena.
社団法人応用物理学会の論文
2002-07-15