An electric magnetic resistance control structure for an exercise machine includes a base; a flywheel, pivotally connected to the base through a rotating shaft, the rotating shaft defining an axial direction, the flywheel, a non-magnetically sensitive layer being coupled to a circumference of the flywheel; a power unit, fixed to the base; a magnetic resistance unit, including a coupling portion corresponding to an arc of the non-magnetically sensitive layer, at least one magnetic member being provided on the coupling portion and kept at a distance from the non-magnetically sensitive layer to generate a magnetic resistance effect; a control unit, configured to control a current applied to the power unit to drive the magnetic resistance unit to move along the axial direction, thereby changing an overlapping area of the magnetic member and the non-magnetically sensitive layer in the axial direction, so as to adjust a magnetic resistance of the flywheel.

Described herein is a device comprising members in a kinematic relationship. The kinematic relationship is at least partially governed by at least one magnetic flux interaction that, in effect, may provide a tunable resistance to movement, changing the rate of relative movement between the members. In one embodiment, the device comprises a first member in a kinematic relationship with at least one further member to form a system. The system moves within a limited range of motion and the system interacts when an external energizing force is imposed on the system causing the members to respond due to their kinematic and dynamic characteristics and thereby creating relative motion between the members. The trigger member is coupled to the at least the first member and moves in response to a pre-determined system movement. When the trigger member moves, the trigger member imposes a braking action on the system or a member or members thereof. The speed and/or intensity of the braking action imposed by the trigger member on the system or a member or members thereof is controlled by the trigger member rate of movement. This rate of movement is in turn governed by a magnetic flux interaction between the trigger member and the at least one first member causing formation of a magnetically induced eddy current force between the parts.

Magnet assemblies of electromechanical assemblies for elevator systems are described. The magnet assemblies include a magnet, at least one rail engagement block, and an encapsulating body encapsulating the magnet and the at least one rail engagement block, wherein the encapsulating body is formed from a non-magnetic material. A target extension is formed from the material of the encapsulating body and extends away from the magnet and the at least one rail engagement block. A proximity switch target is held within the target extension for detection by a proximity switch.

An indoor exercise bicycle having a magnetic brake. The magnetic brake system has a pair of parallel arms each having a set of magnets. The pair of parallel arms moves along a track in a radial direction relative to the axis of the flywheel. The pair of parallel arms move toward and away from the flywheel not via a pivoting action. Instead, the pair of parallel arms moves linearly towards and away from the flywheel.

A channel segment for a track of a mover device is provided, the channel segment comprising: opposite ends joined by a body forming a magnetic flux pathway between the opposite ends, the magnetic flux pathway being one or more of C-shaped, U-shaped and horseshoe shaped between the opposite ends, the opposite ends forming respective transverse magnetic flux pathways about perpendicular to the magnetic flux pathway; laminations of ferromagnetic material forming the body, the laminations about parallel to the magnetic flux pathway and about perpendicular to the respective transverse magnetic flux pathways; shear pins through the laminations, the shear pins positioned to reduce eddy currents one or more of in and around the shear pins; and a retention mechanism at the opposite ends, the retention mechanism configured to transversely fasten the laminations together at the opposite ends while remaining insulated from each other.

Systems, devices, and methods are described for providing, among other things, an electrodynamic contactless braking system. In an embodiment, the electrodynamic contactless braking system may include plurality of electromagnet assemblies arranged and configured to have alternating magnetic field orientations. In an embodiment, each electromagnet assembly may include an air gap formed between a first electromagnet pole and a second electromagnet pole. In an embodiment, each electromagnet assembly is configured to generate a magnetic field of a character and for a duration sufficient to induce eddy currents on an electrically-conductive element moving within the air gap of each of the plurality of electromagnets. In an embodiment, the electrodynamic contactless braking system may include a controller operatively coupled to each of the plurality of electromagnets, the controller configured operate the plurality of electromagnets in parallel.

Magnet assemblies of electromechanical assemblies for elevator systems are described. The magnet assemblies include a magnet, at least one rail engagement block, and an encapsulating body encapsulating the magnet and the at least one rail engagement block, wherein the encapsulating body is formed from a non-magnetic material. A target extension is formed from the material of the encapsulating body and extends away from the magnet and the at least one rail engagement block. A proximity switch target is held within the target extension for detection by a proximity switch.

Described herein is a device comprising members in a kinematic relationship. The kinematic relationship is at least partially governed by at least one magnetic flux interaction that, in effect, may provide a tunable resistance to movement, changing the rate of relative movement between the members. In one embodiment, the device comprises a first member in a kinematic relationship with at least one further member to form a system. The system moves within a limited range of motion and the system interacts when an external energizing force is imposed on the system causing the members to respond due to their kinematic and dynamic characteristics and thereby creating relative motion between the members. The trigger member is coupled to the at least the first member and moves in response to a pre-determined system movement. When the trigger member moves, the trigger member imposes a braking action on the system or a member or members thereof. The speed and/or intensity of the braking action imposed by the trigger member on the system or a member or members thereof is controlled by the trigger member rate of movement. This rate of movement is in turn governed by a magnetic flux interaction between the trigger member and the at least one first member causing formation of a magnetically induced eddy current force between the parts.

A hub structure having an anti-lock braking system contains: a hub assembly and an anti-locking assembly. The hub assembly is located on a center of a wheel and includes a holder and a connection shaft. The anti-locking assembly is received in the holder and is fitted on the connection shaft, and the anti-locking assembly includes an anti-lock seat received in the holder and fitted on the connection shaft to rotate with the holder simultaneously, multiple eddy current elements arranged on two sides of the anti-lock seat and two ends of the connection shaft. A predetermined distance is defined between any two adjacent eddy current elements, and a respective eddy current element has at least one electromagnetic induction portion, when two corresponding electromagnetic induction portions are electrically conducted, a current magnetic field produces so that the anti-lock seat produces reverse currents to stop rotation.

An eddy current brake for a steer-by-wire steering system of a vehicle that includes a steering wheel may include magnets and a magnet carrier. The eddy current brake may be connected in a force-transmitting manner to an axle to which the steering wheel is connected, and to the steering wheel, in a force-transmitting manner.