VALVE SPOOL MONITORING USING ANISOTROPIC MAGNETORESISTANCE SENSOR

摘要

A valve assembly includes a valve module, a first solenoid, and a sensing module. The first solenoid moves a valve spool axially within the valve module. The sensing module determines a position of the valve spool within the valve module. A second solenoid or an end cap may plug a distal end of the sensing module. The sensing module includes at least one anisotropic magnetoresistance sensor disposed within a housing. At least one magnetic element is operatively coupled to the valve spool (e.g., to a spool extension).