An electromagnetic system for controlling the operating mode of a non-friction coupling assembly and a coupling and magnetic control assembly are provided. Magnetic circuit components include a ferromagnetic or magnetic element received within a pocket of a coupling member. The element controls the operating mode of the coupling assembly. A stationary electromagnetic source includes at least one excitation coil which generates a magnetic field between poles of the source when the at least one coil is supplied with current. Ferromagnetic or magnetic first and second inserts are received and retained within first and second spaced passages, respectively, of the coupling member. The electromagnetic source, the element, the inserts and air gaps between the various magnetic circuit components make up a closed loop path containing magnetic flux so that the element moves between first and second positions of the element when the at least one coil is supplied with current.

A rotating shaft connection apparatus and a multi-screen mobile terminal device are related to. The rotating shaft connection apparatus includes a rotating shaft, a drive member, an adapting member, and a magnetic member. The drive member is fixed on the rotating shaft; the adapting member and the magnetic member are rotatably sleeved on the rotating shaft; the adapting member is located between the drive member and the magnetic member; and the adapting member is slidably engaged with the rotating shaft in an axial direction. In a first state, the adapting member is engaged with the drive member in a locking manner, and the rotating shaft is rotated so as to rotate the adapting member; and in a second state, the rotating shaft stops rotating, and the adapting member is engaged with the magnetic member in a locking manner.

A joint assembly and clutch assembly for use in a vehicle. The joint assembly includes a first joint member that is drivingly connected to a second joint member by using one or more third joint members. A first shaft is drivingly connected to the first joint member. The clutch assembly includes a first clutch member, a second clutch member, and an actuation assembly that is operably configures to selectively drive the second clutch member into engagement with the first clutch member of the clutch assembly. The actuation assembly utilizes an amount of rotational force that is transmitted from the first shaft in order to transition the second clutch member into engagement with the first clutch member. At least a portion of a second shaft is drivingly connected to the second clutch member.

A drive force control system appropriately controls motors each connected to a corresponding one of drive wheels, so that a vehicle can be propelled with high efficiency. First motor and second motors are controlled in such a manner that a sum of torques transmitted to a right front wheel and a left rear wheel equals to a total value of required torques of the right front wheel and the left rear wheel. A target torque of the first motor and a target torque of the second motor achieving a smallest amount of power output from an electrical power source, for the output torques from the first motor and the second motor are calculated. A torque is generated by the first motor based on the target torque of the first motor calculated, and a torque is generated by the second motor based on the target torque of the second motor calculated.

An electric actuator comprises a housing and an output shaft reciprocatingly received by the housing. There is a screw assembly disposed within the housing and coupled to the output shaft. The screw assembly includes a plurality of annular rollers and a central screw received by the annular rollers. The annular rollers are rotatable about the central screw. There is a motor which includes a stator and a rotor. The rotor has an inner bore which engages the annular rollers. Rotation of the rotor causes the central screw to translate axially relative to the rotor and the output shaft to reciprocate relative to the housing.

Overrunning, non-friction coupling and control assemblies, a switchable linear actuator device and a reciprocating electromechanical apparatus for use in the assemblies are provided. The device and apparatus control the operating mode of at least one non-friction coupling assembly. The device and apparatus have a plurality of magnetic sources which produce corresponding magnetic fields to create a net translational force. The net translational force comprises a first translational force caused by energization of at least one electromagnetic source and a magnetic latching force based upon linear position of a permanent magnet source along an axis. One or more cams are utilized to control whether a locking member either couples or uncouples its corresponding coupling assembly.

A switchable linear actuator device and an overrunning, non-friction, radial coupling and control assembly using the device are provided. The device has magnetic sources which produce corresponding magnetic fields to create net translational forces. The device includes a first and locking members and a stator structure including a first and second electromagnetic sources configured to create first and second electronically-switched magnetic fields, respectively. A translator structure includes first and second cams having contour surfaces and a magnetically-latching, permanent magnetic source magnetically coupled to the stator structure across a radial air gap. The translator structure translates along an axis between first and second axial positions and between second and third axial positions upon experiencing first and second net translational forces, respectively, to cause the first and second locking members to ride on the contour surfaces of the first and second cams, respectively, and perform a sequenced shift.

An electrostatic clutch is described comprising a plurality of micron-scale thickness electrodes, adjacent electrodes being separated by a thin film of dielectric material. A power source and controller apply a voltage across two electrodes, causing an electrostatic force to develop. When engaged, a force can be transferred through the clutch. A tensioning device maintains the alignment of the clutch when the electrodes are disengaged, but permits movement in at least one direction. In some embodiments, multiple clutches are connected to an output to provide variable force control and a broad range of torque input and output values. Moreover, the clutch can be used as an energy-recycling actuator that captures mechanical energy from negative work movements, and returns energy during positive work movements.

An electrostatic clutch is described comprising a plurality of micron-scale thickness electrodes, adjacent electrodes being separated by a thin film of dielectric material. A power source and controller apply a voltage across two electrodes, causing an electrostatic force to develop. When engaged, a force can be transferred through the clutch. A tensioning device maintains the alignment of the clutch when the electrodes are disengaged, but permits movement in at least one direction. In some embodiments, multiple clutches are connected to an output to provide variable force control and a broad range of torque input and output values. Moreover, the clutch can be used as an energy-recycling actuator that captures mechanical energy from negative work movements, and returns energy during positive work movements.

A one-way clutch includes a first clutch member, a second clutch member disposed coaxially with the first clutch member for rotation relative to the first clutch member, and an electromagnetic actuator assembly. The assembly is supported on one of the clutch members and configured to engage the other of the clutch members. The assembly includes a core, a coil disposed therearound, and a magnetic armature having an aperture therethrough. The armature is pivotable toward a longitudinal end of the core by energization of the coil from a de-energized position to an energized position such that the end of the core resides in the aperture in at least one of the positions.