| 主权项 |
1. A magnetic system for controlling the operating mode of an overrunning coupling assembly including a coupling member having a first coupling face and a coupling subassembly having a second coupling face with a pocket defining a load-bearing shoulder, the coupling faces being in close-spaced opposition with one another, at least one of the coupling member and the coupling subassembly being mounted for rotation about a rotary axis, the system comprising:
a ferromagnetic or magnetic element received within the pocket in an uncoupling position and movable outwardly from the pocket to a coupling position characterized by abutting engagement of the element with the load-bearing shoulder; the element controlling the operating mode of the coupling assembly; an electromagnetic source including at least one excitation coil; a reciprocating armature arranged concentrically relative to the at least one excitation coil and being axially movable when the at least one excitation coil is supplied with current, the armature being connected to the element to move the element between the coupling and uncoupling positions; and a magnetic field sensor disposed adjacent and stationary with respect to the element for sensing magnetic flux to produce an output signal which is based on the position of the element wherein a variable magnetic field is generated in response to movement of the element between the coupling and uncoupling positions. |
