Appliance for on line determination of small air gaps in running machines with all components mounted on printed circuit card

摘要

The appliance comprises a printed circuit card (3) located in the end windings of the stator. This card is fitted with all the components necessary to monitor the air gap (18) between stator and rotor. The components include Hall sensors (11), eddy current sensors (12) temperature sensors with all the ancillary components to process the signals (14), and power electronics (20) for controlling the windings (8)