Disclosed is a device with a stator and a rotor, the device comprising: a stator; a rotor, wherein an air gap is provided between the rotor and the stator, and an air gap protection device fixedly connected to the stator, wherein the radial distance between the air gap protection device and the rotor is less than the radial distance between thy stator and the rotor, and the air gap protection device rotates relative to the rotor when in contact with the rotor. By arranging the air gap protection device fixedly connected to the stator, the air gap protection device can rotate relative to the rotor when in contact with the rotor, and the radial distance between the air gap protection device and the rotor is less than the radial distance between the stator and the rotor.

Examples include an actuator that includes a rotor that includes a permanent magnet; a stator that at least partially surrounds the rotor; a plurality of electromagnets coupled to the stator that are configured to apply magnetic force to the permanent magnet to rotate the rotor; a first lock that (i) has a first mechanical bias to engage the rotor and prevent rotation of the rotor when the rotor is in a home position and (ii) is configured to disengage the rotor against the first mechanical bias while receiving a first control signal; and a second lock that (i) has a second mechanical bias to disengage the rotor and (ii) is configured to engage the rotor against the second mechanical bias to prevent rotation of the rotor while receiving a second control signal.

Examples include an actuator that includes a rotor that includes a permanent magnet; a stator that at least partially surrounds the rotor; a plurality of electromagnets coupled to the stator that are configured to apply magnetic force to the permanent magnet to rotate the rotor; a first lock that (i) has a first mechanical bias to engage the rotor and prevent rotation of the rotor when the rotor is in a home position and (ii) is configured to disengage the rotor against the first mechanical bias while receiving a first control signal; and a second lock that (i) has a second mechanical bias to disengage the rotor and (ii) is configured to engage the rotor against the second mechanical bias to prevent rotation of the rotor while receiving a second control signal.

A stator of a motor for an automobile includes a plurality of assemblies disposed in a curve shape to form a hole at a center of the stator. Each of the plurality of assemblies includes: a stator core; a bobbin surrounding an outer surface of the stator core; a coil being wound multiple times around the bobbin and connected to a lead-in line and a lead-out line disposed at both ends thereof, respectively; and a plurality of bus bars disposed on the bobbin. At least one of the plurality of the bus bars is connected to the lead-in line or the lead-out line. Some of the plurality of bus bars intersect each other.

A stator of a motor for an automobile includes a plurality of assemblies disposed in a curve shape to form a hole at a center of the stator. Each of the plurality of assemblies includes: a stator core; a bobbin surrounding an outer surface of the stator core; a coil being wound multiple times around the bobbin and connected to a lead-in line and a lead-out line disposed at both ends thereof, respectively; and a plurality of bus bars disposed on the bobbin. At least one of the plurality of the bus bars is connected to the lead-in line or the lead-out line. Some of the plurality of bus bars intersect each other.

Stator modules are disclosed. Stator modules may include: a stator body; a working surface supported relative to the stator body; and a plurality of electrical conductors, each electrical conductor of the plurality of electrical conductors extending along a respective portion of the working surface and operable to generate a magnetic field to facilitate moving, relative to the working surface, a magnetized mover in the magnetic field in response to electrical current through the electrical conductor. Robotic systems including such stator modules are also disclosed.

Stator modules are disclosed. Stator modules may include: a stator body; a working surface supported relative to the stator body; and a plurality of electrical conductors, each electrical conductor of the plurality of electrical conductors extending along a respective portion of the working surface and operable to generate a magnetic field to facilitate moving, relative to the working surface, a magnetized mover in the magnetic field in response to electrical current through the electrical conductor. Robotic systems including such stator modules are also disclosed.

A soft magnetic core of an inductor or a motor core includes an alloy having a composition of Fe, Si, B, P, Cu, and Y, and the soft magnetic core or the motor core has a composite structure in which crystal grains including Fe are dispersed in an amorphous phase. Also, the alloy is expressed by the compositional formula Fe.sub.aSi.sub.bB.sub.cP.sub.dCu.sub.eY.sub.fC.sub.g, wherein a to g satisfy 80≤a≤87, 0≤b≤9, 3≤c≤14, 1≤d≤8, 0.2≤e≤2.5, 0≤f≤3.0, 0≤g≤4.0, and 0≤(e/f)≤4 in terms of atomic percentage value.

A soft magnetic core of an inductor or a motor core includes an alloy having a composition of Fe, Si, B, P, Cu, and Y, and the soft magnetic core or the motor core has a composite structure in which crystal grains including Fe are dispersed in an amorphous phase. Also, the alloy is expressed by the compositional formula Fe.sub.aSi.sub.bB.sub.cP.sub.dCu.sub.eY.sub.fC.sub.g, wherein a to g satisfy 80≤a≤87, 0≤b≤9, 3≤c≤14, 1≤d≤8, 0.2≤e≤2.5, 0≤f≤3.0, 0≤g≤4.0, and 0≤(e/f)≤4 in terms of atomic percentage value.

A compaction plate for magnetic mass is proposed. The compaction plate comprises a plurality of laminated magnetic sheets, the laminated magnetic sheets being fixed together with fixing and electric insulating means.