Abstract: A linear permanent magnet motor may include a stator unit having a coil, a mover including an array of permanent magnets, and a position sensing device operable to determine a position of the mover. The mover is arranged to move along a motion direction. The position sensing device has a sensing element operable to sense a magnetic field of the array of permanent magnets The sensing element is fixed to the stator unit. The array of permanent magnets is spaced apart from the stator unit by an air gap in which electromagnetic fields created by the array of permanent magnets and by coil are configured to interact thereby generating traction. The sensing element is positioned such that it is within a magnetic leakage field of the array of permanent magnets when the array of permanent magnets is positioned in correspondence with the sensing element.

Abstract: A magnetic positioning device is provided that includes a first cup-shape permanent magnet having at least one permanent magnet segment conforming to the first cup-shape, where the first cup-shape permanent magnet has a first polarity, a second cup-shape permanent magnet that includes at least one permanent magnet segment conforming to the second cup-shape, where the second cup-shape permanent magnet segment has a second polarity, where the second cup-shape permanent magnet is disposed concentric to the first cup-shape permanent magnet, where the first polarity is the opposite of the second polarity or the first polarity is the same as the second polarity, where a gap separates the first cup-shape permanent magnet from the second cup-shape permanent magnet, and a connection feature, where the connection feature is disposed on the second cup-shape permanent magnet, where the connection feature is configured to connect a lever arm to the second cup-shape permanent magnet.

Abstract: An electromagnetic actuator (100) comprises magnets (109, 111, 113, 115, 11), and a ferromagnetic structure (103) accommodating control conductors (118, 121, 123, 125). The magnets and the structure can move with respect to one another under control of control currents in the control conductors. The magnetic field in a gap (107) between the magnets and the ferromagnetic structure is oriented perpendicular to the direction of relative movement. The structure (103) accommodates damping conductors (127) that form closed loops of an electrically conductive material, different from the ferromagnetic material. The damping conductors (127) provide a damping force induced by the relative movement.

Abstract: A magnetic positioning device is provided that includes a first cup-shape permanent magnet having at least one permanent magnet segment conforming to the first cup-shape, where the first cup-shape permanent magnet has a first polarity, a second cup-shape permanent magnet that includes at least one permanent magnet segment conforming to the second cup-shape, where the second cup-shape permanent magnet segment has a second polarity, where the second cup-shape permanent magnet is disposed concentric to the first cup-shape permanent magnet, where the first polarity is the opposite of the second polarity or the first polarity is the same as the second polarity, where a gap separates the first cup-shape permanent magnet from the second cup-shape permanent magnet, and a connection feature, where the connection feature is disposed on the second cup-shape permanent magnet, where the connection feature is configured to connect a lever arm to the second cup-shape permanent magnet.

Abstract: An electromagnetic actuator (100) comprises magnets (109, 111, 113, 115, 11), and a ferromagnetic structure (103) accommodating control conductors (118, 121, 123, 125). The magnets and the structure can move with respect to one another under control of control currents in the control conductors. The magnetic field in a gap (107) between the magnets and the ferromagnetic structure is oriented perpendicular to the direction of relative movement. The structure (103) accommodates damping conductors (127) that form closed loops of an electrically conductive material, different from the ferromagnetic material. The damping conductors (127) provide a damping force induced by the relative movement.