This invention relates to apparatus for creating a magnetic field to propel a magnetic device within a diverse media including biological matrices, tissues, organs, animals and humans. In one embodiment, a cylindrical dual Halbach array provides a uniform magnetic field with a settable field direction. Another embodiment provides support and orientation apparatus for a controlled-gradient conical magnet to achieve a full 4π steradian solid angle coverage around the specimen.

The VCM according to an exemplary embodiment of the present disclosure includes a base unit, a mover including a bobbin arranged at an upper surface of the base unit and formed with a plurality of rotation prevention units along a periphery and a first driving unit arranged at a periphery of the bobbin, a stator including a yoke configured to the base unit to surround the mover and inner yoke units each extended to between the rotation prevention units, and a second driving unit oppositely arranged to the first driving unit, and an elastic member elastically supporting the mover, wherein an object occurrence preventing portion is formed between the rotation prevention unit and the inner yoke units to decrease a contact area between the rotation prevention unit and the inner yoke units.

A motor drive system includes motor drive control devices supplying first and second powers to first and second coils, respectively. The first motor drive control device includes: a detector communication unit acquiring a mover movement detection value; a position and speed control unit generating a thrust command to cause the movement detection value to follow a time-series movement target value received from an external device; and a current control unit supplying, to the first coils, the first power to cause thrust generated on the mover to follow the thrust command, and generating data on third power to be supplied to the second coils and transmitting the data to the second motor drive control device when the mover moves from the first coil to the second coil. The second motor drive control device supplies the second power calculated using the data on the third power to the second coils.

A linear motor conveyor system having a moving element including a first and a second magnetic element on opposite sides; a first track including a first linear motor configured to generate a dynamic magnetic field which acts on the first magnetic element to provide a first lateral force and a first longitudinal force; a second track with a transfer region positioned adjacent to the first track, the second track configured to generate a magnetic field that acts on the second magnetic element to provide a second lateral force; and a controller to control the first linear motor such that the first dynamic lateral force is configured to bias the moving element toward the first linear motor until the moving element reaches a switch point in the transfer region, where the first and second lateral forces are selectively adjusted to bias the moving element toward the second track.

A magnetic field propulsion unit includes a first magnetic field generating device (“FMFGD”) generating a magnetic field; a second magnetic field generating device (“SMFGD”) generating a magnetic field; an energy supply unit providing the FMFGD and the SMFGD with electrical energy; and a control unit controlling the energy supply unit in accordance with a predefined switching scheme. The SMFGD is a rod-like antenna that lies in a plane in which also the FMFGD lies. The control unit is: supplying the SMFGD with electrical energy so that a second magnetic field surrounding the SMFGD is generated; supplying the FMFGD with electrical energy so that a first magnetic field surrounding the FMFGD is generated. The FMFGD is supplied with electrical energy a predetermined period of time after the SMFGD is supplied with electrical energy.

A magnetic field propulsion unit includes a first magnetic field generating device (“FMFGD”) generating a magnetic field; a second magnetic field generating device (“SMFGD”) generating a magnetic field; an energy supply unit providing the FMFGD and the SMFGD with electrical energy; and a control unit controlling the energy supply unit in accordance with a predefined switching scheme. The SMFGD is a rod-like antenna that lies in a plane in which also the FMFGD lies. The control unit is: supplying the SMFGD with electrical energy so that a second magnetic field surrounding the SMFGD is generated; supplying the FMFGD with electrical energy so that a first magnetic field surrounding the FMFGD is generated. The FMFGD is supplied with electrical energy a predetermined period of time after the SMFGD is supplied with electrical energy.

A linear motor conveyor system having a moving element including a first and a second magnetic element on opposite sides; a first track including a first linear motor configured to generate a dynamic magnetic field which acts on the first magnetic element to provide a first lateral force and a first longitudinal force; a second track with a transfer region positioned adjacent to the first track, the second track configured to generate a magnetic field that acts on the second magnetic element to provide a second lateral force; and a controller to control the first linear motor such that the first dynamic lateral force is configured to bias the moving element toward the first linear motor until the moving element reaches a switch point in the transfer region, where the first and second lateral forces are selectively adjusted to bias the moving element toward the second track.

A lens module is provided, including a holder, a barrel, and an optical element. The optical element is affixed in the barrel, and the holder has a first material. Additionally, the barrel is affixed in the holder and has a second material, wherein the hardness of the first material is greater than the hardness of the second material.

A lens module is provided, including a holder, a barrel, and an optical element. The optical element is affixed in the barrel, and the holder has a first material. Additionally, the barrel is affixed in the holder and has a second material, wherein the hardness of the first material is greater than the hardness of the second material.

A motor drive system includes motor drive control devices supplying first and second powers to first and second coils, respectively. The first motor drive control device includes: a detector communication unit acquiring a mover movement detection value; a position and speed control unit generating a thrust command to cause the movement detection value to follow a time-series movement target value received from an external device; and a current control unit supplying, to the first coils, the first power to cause thrust generated on the mover to follow the thrust command, and generating data on third power to be supplied to the second coils and transmitting the data to the second motor drive control device when the mover moves from the first coil to the second coil. The second motor drive control device supplies the second power calculated using the data on the third power to the second coils.