A control system for controlling a magnetic suspension system includes controllers each being configured to control one or more of magnetic actuators magnetically levitating an object. One of the controllers is configured to operate as a master controller and other one or ones of the controllers are configured to operate as one or more slave controllers. The master controller is communicatively connected with one or more digital data transfer links to the one or more slave controllers and configured to control operation of the one or more slave controllers. The control system makes it possible to implement a centralized control with separate controllers, and thereby without a need for a controller having a high number of controller current sources.

A magnetic attraction structure for a wireless charging device or a terminal device is provided, which includes one or more electromagnets. The electromagnet includes an iron core and a winding group. The iron core includes a first plate, a second plate and a connecting part. The first plate is separated from the second plate by a distance, and the connecting part is connected between the first plate and the second plate, and the winding group surrounds the connecting part. A side surface of a long side of the first plate and a side surface of a long side of the second plate are configured to face a cover plate of the wireless charging device or a cover plate of the terminal device. A wireless charging device including the above-mentioned magnetic attraction structure is also provided.

An unmanned aerial vehicle including a body and a docking mechanism coupled to the body is provided. The docking mechanism secures a magnetic crawler to the body during flight and during landing on a ferromagnetic cylindrical surface. The docking mechanism includes a docking hook that couples to the magnetic crawler and a linear actuator coupling the docking hook to the body. The docking hook includes passive latches that passively release the magnetic crawler from the docking hook onto the cylindrical surface after the landing, receive the magnetic crawler into the docking hook from the cylindrical surface after the releasing, and secure the magnetic crawler to the body during takeoff from the cylindrical surface after the receiving. The linear actuator lowers the docking hook and coupled magnetic crawler from the body to the cylindrical surface, and raises the docking hook and received magnetic crawler from the cylindrical surface to the body.

The present disclosure provides a charging receptacle and a charging plug, which cooperate with each other and comprise a receptacle ejection device and a plug ejection device respectively for automatically separating the charging receptacle from the charging plug after charging of the apparatus to be charged is completed. The present disclosure further provides a charging system comprising the charging receptacle and the charging plug as described above.

A switchable permanent magnetic unit is disclosed. The unit comprises: a housing, first and second permanent magnets, and a conductive coil. The first magnet is mounted within the housing and the second magnet is rotatable between first and second positions and mounted within the housing in a stacked relationship with the first magnet. The unit generates a first level of magnetic flux at a workpiece contact interface when the second magnet is in the first position and a second level of magnetic flux at the interface when the second magnet is in the second position, the second level being greater than the first level. The conductive coil is arranged about the second magnet and generates a magnetic field. A component of the conductive coil's magnetic field is directed from S to N along the second magnet's N-S pole pair when the second magnet is in the first position.

A magnetic force control device includes a first pole piece having an interaction surface, made of a ferromagnetic material, and configured to be in contact with an N pole of a permanent magnet, a second pole piece having an interaction surface, made of a ferromagnetic material, and configured to be in contact with an S pole of the permanent magnet or another permanent magnet different from the permanent magnet, rotary permanent magnet configured to be rotatable to define a first arrangement state in which an N pole thereof is magnetically connected to the second pole piece and an S pole thereof is magnetically connected to the first pole piece and a second arrangement state in which the N pole is magnetically connected to the first pole piece and the S pole is magnetically connected to the second pole piece.

Device and method for positioning of a bending tool (1) by means of an electromagnet (2) that can be displaced along a magnetic guide, which bending tool (1) is held on a tool holder (4) by a retaining carriage (3) that can be displaced in a direction of movement along a retaining-carriage guide and which bending tool (1) comprises a magnet holder (5) of a magnetizable material, wherein an adjustable magnetic force acts between the electromagnet and the magnet holder (5).

A periodic arrangement of magnets are used to form structures that channel the potential energy that a magnet possesses into kinetic energy in a controlled fashion to perform some useful work or function. One function is to create a magnetic chute that converts the potential energy of a magnetic projectile into kinetic energy that is used to channel the projectile to follow a path achieving high velocities along a path. The path is formed by assembling magnets periodically along the path in a certain fashion to create a magnetic chute that allows the magnetic projectile to slide easily along the path since the projectile is confined by the shape of the magnetic chute.

An actuator to displace, for example a mirror, provides movement with at least two degrees of freedom by varying the currents in two electromagnets. A moving part includes a permanent magnet with a magnetic face constrained to move over a working area lying substantially in a first plane perpendicular to a direction of magnetization of the magnet. The electromagnets have pole faces lying substantially in a second plane closely parallel to the first plane, each pole face substantially filling a quadrant of the area traversed by the face of the moving magnet. An optical position sensor may direct a beam of radiation at the moving magnet through a central space between the electromagnets. The sizes of facets in a pupil mirror device may be made smaller in a peripheral region, but larger in a central region, thereby relaxing focusing requirements.

The magnetic base assembly includes an electromagnet assembly with a top surface open magnetic pole. A shunt plate is magnetically held to the top of the electromagnet. A canting or tilting of the shunt plate results when accidental side or pulling away contact is made between a riveting processing tool and an extending portion of the aircraft part being riveted as the tool is moved from one riveting location to another. The canting or pull off of the tool prevents damage. The operator can observe the tool canting and stop the tool movement or a micro switch or proximity switch senses the canting or tilting automatically so that the tool can be stopped before damage occurs. The magnetic field can be dynamically controlled to provide adequate pulldown force for the riveting function but a breakaway force less than the amount which would cause damage.