TACHOGENERATOR ASSEMBLY

摘要

Bearing assemblies with inner and outer races and rolling elements therebetween incorporate local sensing means for producing a signal indicative of the movement of one of the races relative to the other. The sensing means is mounted in close proximity to one of the races and is usually directly secured to the race intended to be stationary. The sensing means can be mounted laterally of the bearing races or radially inside or outside of the bearing races. The sensing means may employ an inductive or capacitive sensor and oscillatory means and a body or component, such as a disc, carried by the movable race creates an influence detected by the sensing means to provide the signal. In other constructions the sensing means detects changes in electromagnetic radiation or fluid pressure created by the component or body carried by the movable race.