CLEARANCE MEASUREMENT SYSTEM AND METHOD OF OPERATION

摘要

A clearance measurement system (12) is provided. The clearance measurement system (12) includes a reference geometry (86) disposed on a first object (1 4) having an otherwise continuous surface geometry and a sensor (64) disposed on a second object (16), wherein the sensor (64) is configured to generate a first signa l representative of a first sensed parameter from the first object (14) and a second signal representative of a second sensed parameter from the reference geometry (86) . The clearance measurement system (12) also includes a processing unit (198) configured to process the first and second signals to estimate a clearance between the first and second objects (14, 16) based upon a measurement difference between the firs t and second sensed parameters.