Abstract: An EC motor with a rotor. The rotor has a hub with outwardly extending silicon steel laminates with gaps between. Rectangular neodymium permanent magnets are positioned in the gaps. Wedge-shaped ferrite permanent magnets are positioned radially between the silicon steel laminates and the hub of the rotor.

Abstract: An EC motor with a rotor. The rotor has a hub with outwardly extending silicon steel laminates with gaps between. Rectangular neodymium permanent magnets are positioned in the gaps. Wedge-shaped ferrite permanent magnets are positioned radially between the silicon steel laminates and the hub of the rotor.

Abstract: An EC motor with an encapsulated electronic controller. The electronic controller is encapsulated by creating a silicone mold to include sufficiently detailed voids so that certain parts of the electronic controller adjacent the voids are encapsulated and other parts adjacent where the mold has no voids are left unencapsulated.

Abstract: An EC motor with a stator and a rotor mounted to a shaft. The motor has a cooling system, an over molded stator housing, and an optimized rotor. The stator has teeth with wound electromagnetic coils. The teeth and coils are distributed circumferentially with gaps between adjacent coils. The stator is over molded with plastic that forms axially oriented cooling passages between adjacent coil sections. An impeller fan then draws air into the motor through air inlets connected to air passages. The impeller fan directs the air through the axially oriented cooling passages in the stator and out air outlets. An optimized internal rotor has permanent magnets and silicon steel laminates spaced circumferentially and extending outwardly from a central hub. Rectangular shaped magnets are interposed in the gaps between the laminates. Wedge-shaped magnets are aligned radially with the laminates and between the laminates and the hub.

Abstract: An EC motor with a stator and a rotor mounted to a shaft. The motor has a cooling system, an over molded stator housing, and an optimized rotor. The stator has teeth with wound electromagnetic coils. The teeth and coils are distributed circumferentially with gaps between adjacent coils. The stator is over molded with plastic that forms axially oriented cooling passages between adjacent coil sections. An impeller fan then draws air into the motor through air inlets connected to air passages. The impeller fan directs the air through the axially oriented cooling passages in the stator and out air outlets. An optimized internal rotor has permanent magnets and silicon steel laminates spaced circumferentially and extending outwardly from a central hub. Rectangular shaped magnets are interposed in the gaps between the laminates. Wedge-shaped magnets are aligned radially with the laminates and between the laminates and the hub.

Abstract: A relatively inexpensive and accurate method for micro scale tool touch-off and remaining tool life estimation using advanced methods of tool-workpiece conductivity monitoring. Part registration is based on a conductive circuit detection technique that utilizes an analog DC voltage. A tool life estimation system is provided, and accomplished through the combined application of hardware signal filtering and advanced signal processing techniques implemented on a digital signal processing unit.