초록 ▼

An apparatus, system and method for determining the position for translating, rotating and complex motion generating shaft elements are provided. A layer may be deposited over an exterior surface of the shaft element containing a known surface geometry to provide for monitoring displacement using on

An apparatus, system and method for determining the position for translating, rotating and complex motion generating shaft elements are provided. A layer may be deposited over an exterior surface of the shaft element containing a known surface geometry to provide for monitoring displacement using one or more proximity sensors. The proximity sensor detects any change in the distance between the sensor and the exterior surface geometry of the shaft element. The shaft element may alternatively be magnetized for use with magnetic sensors. The gap dimension is proportional to and/or indicative of the absolute position.

대표청구항 ▼

[ I claim:] [1.]1. An apparatus for measuring displacement, the apparatus comprising:a machine element;a shaft element that moves linearly within the machine element;an integrally formed core having a non-uniform surface inside the shaft element;a layer on the surface of the core in continuous conta

[ I claim:] [1.]1. An apparatus for measuring displacement, the apparatus comprising:a machine element;a shaft element that moves linearly within the machine element;an integrally formed core having a non-uniform surface inside the shaft element;a layer on the surface of the core in continuous contact with the shaft element to provide a uniform surface of the shaft element; anda sensor for detecting the non-uniform surface of the core without contacting the shaft element.