Keywords
functional condition
vibration sensor
non-contact
computer simulation
How to Cite
Abstract
В данной статье приведены результаты определения необходимости использования охранного электрода в виде кольца «Кельвина» для уменьшения влияния внешних полей и неравномерности эквипотенциальных линий на функцию преобразования емкостного сенсора с центральным высокопотенциальным электродом. Предложено размещение вторичного измерительного преобразователя в непосредственной близости к электродам сенсора, что позволяет устранить необходимость использования триаксиального кабеля между сенсором и вторичным преобразователем. Сенсор может быть использован для измерения параметров биения цилиндрических поверхностей валов мощных генераторов. Определена аналитически и методами компьютерного моделирования функция преобразования емкостного сенсора в зависимости от расстояния между общей плоскостью электродов сенсора и заземленной поверхностью вала. Продемонстрировано целесообразность использования средств компьютерного моделирования методами конечно-элементного анализа для исследования метрологических характеристик сенсоров. Библ. 21, рис. 4, табл.
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