MOVABLE VANE CONTROL SYSTEM

摘要

A movable vane control system (42) is disclosed for use with a gas turbine engine (10) having a turbine axis of rotation. The system (42) includes a plurality of rotatable turbine vanes in a gas flow path within a turbine case (55) of the gas turbine engine (10). A first vane position sensor (52) having a first distance sensor (76) is configured to sense the distance between the first distance sensor (76) and a surface portion of a first of said plurality of vanes or a first movable target connected to the first vane. Additionally, the first distance sensor (76), the first vane surface portion, the first movable target, or a combination thereof is configured to provide a variable distance between the first distance sensor (76) and the first vane surface portion or first movable target that varies as a function of a position of the first vane.