A method for operating a planar drive system is specified. The planar drive system comprises a stator, a plurality of rotors and a main controller. The stator comprises a plurality of energizable stator conductors. Energizing of stator conductors of the stator can be controlled via the main controller. Each rotor comprises a magnet device having at least one rotor magnet. A magnetic interaction can be produced between energized stator conductors of the stator and the magnet devices of the rotors in order to drive the rotors. At least one individual rotor identifier is assigned to each rotor. An identification of the rotors is carried out by providing position information of the rotors and rotor identifiers of the rotors and linking the provided position information of the rotors to the provided rotor identifiers of the rotors via the main controller.

A transport device in the form of a planar motor having at least one transport segment which forms a transport plane and having at least one transport unit, which can be moved at least two-dimensionally in the transport plane, to allow more versatile process management, is provided in the transport device. At least one coupling apparatus for releasably coupling the transport unit to the coupling unit is arranged on the transport unit and, on the coupling unit in each case, the transport unit and the coupling unit can be coupled, at least temporarily, by the coupling apparatuses to form an assembly by way of a relative movement in the transport plane. The coupling apparatuses interact in the coupled assembly in order to limit a relative movement between the transport unit and the coupling unit in at least one degree of freedom of movement.

There is provided a linear motor and a linear compressor including the same. The linear motor includes a stator including an air gap, a coil provided in the stator, a mover for reciprocating in the air gap, and at least one magnet fixed to the stator. In the magnet, a length in a first direction that intersects a reciprocating direction of the mover is larger than a length in a second direction that is the reciprocating direction of the mover. Therefore, it is possible to maintain or improve motor efficiency by using an amount of use of a magnet while using a low-priced magnet.

A system is described in which a magnetic mover includes at least one mover identification device. The system also includes a stator defining a work surface and including an actuation coil assembly and at least one stator identification device operable to interact with the at least one mover identification device. One or more sensors are used to sense a position of the first magnetic mover. One or more stator driving circuits are used to drive the actuation coil assembly to thereby move the first magnetic mover over the work surface. The first magnetic mover includes one or more magnetic components positioned such that interaction of one or more magnetic fields emitted by the one or more magnetic components with one or more magnetic fields generated by the actuation coil assembly when driven by the one or more stator driving circuits enables movement of the first magnetic mover in at least two degrees of freedom.

A bearing assembly for a linear electromagnetic machine includes a sleeve having a surface configured to provide a bearing between the surface and a translator, a front plate coupled to the sleeve, a support block, and a plurality of flexures coupled to the support block. Each flexure is coupled between the support block and one of the front plate or a stator. For example, a load path extends from a stator to the support block via a first set of flexures of the plurality of flexures, from the support block to the front plate via a second set of flexures of the plurality of flexures, and from the front plate to the sleeve. In the example of four flexures, two flexures are affixed to the support block and front plate, while two other flexures are affixed to the support block and the stator.

A secondary part provides a magnetic path for a primary part of a linear motor and includes a spacer element as well as yoke plates forming two limbs, which are arranged for an attachment to the spacer element so that—situated opposite each other—they extend in planes parallel to the magnetic path. In addition, the secondary part includes a plurality of permanent magnets, which are fixed in place on inner sides of the yoke plates pointing toward the magnetic path. The permanent magnets each have a width that decreases in an extension direction perpendicular to the magnetic path.

A stator module for electromagnetically driving a rotor of a planar drive system comprises a connection module to provide drive energy. A power module has a current-generating unit to generate a drive current, which drives the rotor, from the drive energy. A stator unit has a coil conductor, to which the drive current can be applied, for generating a magnetic field which drives the rotor. A sensor module comprises a position-detecting unit to detect a position of the rotor over the sensor unit. The sensor module is arranged in a module housing. The stator unit and power module are arranged on a top side of the module housing and the connection module is arranged on a bottom side. The current-generating unit and the connection module are connected via a drive energy line. The drive energy line passes through the module housing in a manner electrically insulated from the sensor module.

A stator module for electromagnetically driving a rotor of a planar drive system comprises a connection module to provide drive energy. A power module has a current-generating unit to generate a drive current, which drives the rotor, from the drive energy. A stator unit has a coil conductor, to which the drive current can be applied, for generating a magnetic field which drives the rotor. A sensor module comprises a position-detecting unit to detect a position of the rotor over the sensor unit. The sensor module is arranged in a module housing. The stator unit and power module are arranged on a top side of the module housing and the connection module is arranged on a bottom side. The current-generating unit and the connection module are connected via a drive energy line. The drive energy line passes through the module housing in a manner electrically insulated from the sensor module.

A VCM (voice coil motor) is disclosed, the VCM including: a rotor including a cylindrical bobbin for accommodating a lens and protruded at a bottom end with a boss, and a coil block arranged at a periphery of the bobbin; a stator including a magnet facing the coil block and a yoke fixing the magnet; and an elastic member including a first elastic member formed with a through hole coupled to the boss of the bobbin and a second elastic member coupled to an upper end facing the bottom end of the bobbin; wherein the boss is formed with a disengagement prevention unit inhibiting the first elastic member from being disengaged from the boss, and the first elastic member is formed with a coupling unit contacting a joint where the disengagement prevention unit and the coupling unit meet.

A VCM (voice coil motor) is disclosed, the VCM including: a rotor including a cylindrical bobbin for accommodating a lens and protruded at a bottom end with a boss, and a coil block arranged at a periphery of the bobbin; a stator including a magnet facing the coil block and a yoke fixing the magnet; and an elastic member including a first elastic member formed with a through hole coupled to the boss of the bobbin and a second elastic member coupled to an upper end facing the bottom end of the bobbin; wherein the boss is formed with a disengagement prevention unit inhibiting the first elastic member from being disengaged from the boss, and the first elastic member is formed with a coupling unit contacting a joint where the disengagement prevention unit and the coupling unit meet.