Abstract: A ironless magnetic motor (21-23) employs a magnetic track (30) and a forcer (40). The forcer (40) is orientated in relations to a magnetic field (?) across a linear air gap of the magnetic track (30) to generate a drive force (FX) parallel to the X drive axis and orthogonal to the Z levitation axis in response to a commutation drive current (IX) and to generate a force (FZ, FY) orthogonal to the X drive axis in response to a commutation coil current (IZ, IY) being superimposed on and phase shifted from the commutation drive current (IX). To this end, a set of levitating turns of the coil (41) parallel to the X drive axis and orthogonal to the Z levitation axis may be internal or external to magnetic field (?), and the forcer (40) may be centered or offset from a center X-Z longitudinal axis (CP) of the linear air gap.

Abstract: An ironless magnetic motor includes a magnetic track and a forcer. The forcer is oriented in a magnetic field across a linear air gap of the magnetic track to generate a drive force parallel to the X drive axis and orthogonal to the Z levitation axis in response to a commutation drive current and to generate a force orthogonal to the X drive axis in response to a commutation coil current being superimposed on and phase shifted from the commutation drive current. To this end, a set of levitating turns of the coil parallel to the X drive axis and orthogonal to the Z levitation axis may be internal or external to magnetic field, and the forcer may be centered or offset from a center X-Z longitudinal axis (CP) of the linear air gap.

Abstract: A ironless magnetic motor (21-23) employs a magnetic track (30) and a forcer (40). The forcer (40) is orientated a magnetic field (?) across a linear air gap of the magnetic track (30) to generate a drive force (FX) parallel to the X drive axis and orthogonal to the Z levitation axis in response to a commutation drive current (IX) and to generate a force (FZ, FY) orthogonal to the X drive axis in response to a commutation coil current (IZ, IY) being superimposed on and phase shifted from the commutation drive current (IX). To this end, a set of levitating turns of the coil (41) parallel to the X drive axis and orthogonal to the Z levitation axis may be internal or external to magnetic field (?), and the forcer (40) may be centered or offset from a center X-Z longitudinal axis (CP) of the linear air gap.

Abstract: The present invention relates to a magnetic resonance imaging (MRI) device. The basic components of an MRI device are the main magnet system (2), the gradient system (3), the RF system and the signal processing system. According to the present invention, the magnetic resonance imaging (MRI) device has an eddy current shield system, wherein the eddy current shield system comprises at least one perforated eddy current screen (13, 14), and wherein the or each perforated eddy current screen (13, 14) is assigned to the main magnet system (2).

Abstract: The present invention relates to a magnetic resonance imaging (MRI) device. The basic components of an MRI device are the main magnet system (2), the gradient system (3), the RF system and the signal processing system. According to the present invention, the magnetic resonance imaging (MRI) device has an eddy current shield system, wherein the eddy current shield system comprises at least one perforated eddy current screen (13, 14), and wherein the or each perforated eddy current screen (13, 14) is assigned to the main magnet system (2).

Abstract: The invention relates to a magnetic resonance imaging (MRI) system (1) comprising an examination volume (11) in which a patient to be examined can be accommodated, a main magnet system (3) for generating a magnetic field having a main field portion (17) in the examination volume with a substantially constant magnetic field strength (B0), and a gradient magnet system (13) for generating gradients of the main field portion. The MRI system further comprises a damping member (25, 27) which is mounted to a part (5) of the MRI system susceptible to vibrations relative to the magnetic field during operation. Said damping member comprises an electrically conductive member (29, 35, 37) which is present in the magnetic field and in which eddy currents are generated as a result of said vibrations.