45results about How to "Adjust the magnetic field strength" patented technology

The invention discloses a preparation method of flexible anisotropy bonding rare earth permanent magnet material, belonging to the field of magnetic materials. The material is prepared by combining the two-step approach accompanying temperature magnetic field orientation technology of which the calendaring process and the accompanying temperature magnetic field orientation process are separated. A certain quantity of anisotropy magnetic powder which is performed with surface treatment by the processing agent in advance, binder and processing agent are evenly mixed; the mixed material is calendered into flaky flexible bonding magnetic body by the calendaring technology; then, the flaky flexible bonding magnetic body is cut into parts which are heated at certain temperature under the condition of heat preservation for certain time, after that, the obtained product is put into an orientation magnetic field for accompanying temperature magnetic field orientation; and the direction of the orientation magnetic field is parallel to the plane normal direction of the flaky flexible bonding magnetic body. In the preparation technology, magnetic powder can overcome the constraint of a bonding system and rotates under the action of magnetic field force to ensure that the direction of easy magnetization of the magnetic powder generally points to the orientation direction, and the magnetic property of prepared flexible anisotropy bonding rare earth permanent magnet material can be greatly improved.

The invention relates to a coil supporting device and plasma processing equipment. The coil supporting device is used for supporting a coil arranged above the top part of a reaction chamber. The coil supporting device comprises a shielding cover, a coil support and an elevating driving mechanism. The shielding cover is fixed at the top part of the reaction chamber. The coil and the coil support used for fixing the coil are arranged in the internal part of the shielding cover. The elevating driving mechanism is fixed above the top part of the shielding cover and used for driving the coil support and the coil fixedly connected with the coil support to move in an elevating way relative to the reaction chamber. According to the coil supporting device, height of the coil relative to the reaction chamber can be adjusted by driving the coil to move in the elevating way so that possible installing error and processing error of the coil can be eliminated, distribution of a radio frequency magnetic field in the reaction chamber can also be flexibly and accurately adjusted, and thus uniformity of the technology can be enhanced.

The invention provides a damping hollow rod with a multistage energy dissipation mechanism, and belongs to the technical field of structure vibration control. The damping hollow rod comprises a hollowrod body, permanent magnets, conductor pieces, rotating springs, pull-press springs, a sliding block, balls, colliding rings, a guide rod, round rubber gaskets, inner end plates, fixed rods, rubber layers and stiffening ribs. According to the damping hollow rod, the eddy-current damping technology is combined with other passive vibration attenuation technologies, and the multistage energy dissipation mechanism is achieved. When small-amplitude vibration happens to the structure, eddy current energy dissipation units and rotating spring energy dissipation units achieve energy dissipation together; when large-amplitude vibration happens to the structure, the eddy current energy dissipation units and colliding energy dissipation units achieve energy dissipation together; and the different energy dissipation units achieve cooperative energy dissipation work, the energy dissipation control effect is obviously enhanced, meanwhile, damping parameters can be conveniently adjusted, and magnetleaking of magnetic circuits is basically avoided.

The embodiment of the invention discloses a permanent-magnet motor. The permanent-magnet motor comprises an annular stator structure and an annular rotor structure, wherein a stator core is provided with a plurality of stator modulation teeth, armature teeth and armature slots on an annular surface close to the rotor structure along the circumferential direction; the plurality of stator modulationteeth, armature teeth and armature slots are circularly arranged according to the order of one stator modulation tooth, one armature slot, one armature tooth and another armature slot; a first statorpermanent magnet corresponds to each armature tooth and is located at one end, close to the rotor structure, of the corresponding armature tooth; the first stator permanent magnets are magnetized along the radial direction; second stator permanent magnets are located in notches of the corresponding armature slots; the second stator permanent magnets are magnetized along the circumferential direction; and the second stator permanent magnets corresponding to two adjacent armature slots are opposite in magnetization direction; and a rotor core is alternately provided with a plurality of rotor teeth and rotor slots on the annular surface close to the stator structure along the circumferential direction. The permanent-magnet motor disclosed by the embodiment of the invention is capable of directly driving load to get rid of an intermediate transmission device in a traditional transmission system.

The invention relates to a magnetic field-regulated terahertz wave modulator and a manufacturing method thereof. The modulator is characterized by comprising a fixing bracket, two fixed magnetic fieldadjusting boxes and a plug-in Ni nanowire array lens, wherein the fixing bracket comprises two brackets, a sleeve and four horizontal support rods; the sleeve is welded to the tops of the two brackets; two pairs of holes are symmetrically formed in the top and the bottom of the sleeve; the four horizontal support rods are inserted into the holes respectively and are fixed by welding; an opening is disposed in a middle portion of the sleeve between the two pairs of horizontal support rods; the plug-in Ni nanowire array lens is rotatably inserted into the opening; each of the horizontal supportrod is provided with external threads on the end portion away from the sleeve; and the two fixed magnetic field adjusting boxes are slidably disposed on the external threads on the two pairs of horizontal support rods on both sides of the sleeve respectively, and are fixed by bolts. The magnetic field-regulated terahertz wave modulator can be widely applied to the field of terahertz wave modulation.

The invention discloses a TEM based device for generating a controllable vortex electron beam. The device is characterized by comprising an electron gun for generating a planar electron beam, a magnetic field controller, and a magnetic needle wound by a conductive coil; the magnetic needle is arranged on a planar electron beam channel via a chip controlled by electrical equipment; the magnetic field controller generates an intensity controllable magnetic field; and the magnetic field is used to modulate the phase of the planar electron beam. The invention also discloses a method for generatingthe controllable vortex electron beam via the device. The device can form magnetic field distribution similar to magnetic monopole in an electronic microscope, so that the vortex electron beam with single track angular momentum and controllable quantum number is obtained.

The invention provides an earthing pillowcase and a functioning method thereof. The earthing pillowcase comprises a pillowcase top surface and a pillowcase bottom surface; a bottom interlayer is arranged inside the pillowcase bottom surface; a latex layer is sandwiched inside the bottom interlayer; a plurality of electromagnetic components are arranged in the middle of the latex layer; the electromagnetic components comprise magnetic cores; the peripheries of the magnetic cores are wound by coils; two ends of the coils extend out of the latex layers; the pillowcase bottom surfaces are connected with a first plug through a first wire; the first wire is connected in series with potentials; a plurality pieces of energy stone and magnetic stone are embedded into the surface layer of the top of the latex layer; the pieces of the energy stone and the magnetic stone are arranged alternatively; the pillowcase top surface comprises a conductive layer in the inner side and a breathing layer on the outer side; the conductive layer is connected with an electrification insert; a wire inserting hole is formed in the outer end of the electrification insert; a second wire is inserted into the wire inserting hole; a second plug is connected with the outer end of the second wire; a fake live wire inserting piece, a fake null wire inserting piece and a ground wire inserting piece are arranged on the second plug; the fake live wire inserting piece and the fake null wire inserting piece are both insulating inserting piece; and the ground wire inserting piece is a conductive inserting piece.

The invention provides a permanent magnet brake capable of adjusting magnetic field intensity. The permanent magnet brake mainly comprises an engine, a motor shaft, a conductor rotor, a steel body, acopper conductor, a permanent magnet, a spline, a load, a coaxial sleeve, a magnetic isolation assembly and the like. The conventional mechanical connection transmission between a motor and a load isreplaced by an air gap torque transmission mode, and the magnetic isolation assembly and the spline are controlled by an electronic control system, so that the brake effect is improved. The motor is not mechanically connected with a load, has a load protection function, and can reduce vibration and noise at the same time. The coaxial sleeve can balance the rotating speed difference of the inner ring and the outer ring, so that a vehicle is more stable. The device is of a pure mechanical structure, does not consume electricity, does not generate harmonic waves, electromagnetic interference andother pollution, and is a green and environment-friendly product. Buffer starting and multiple times of starting can be achieved. A conductor rotor is installed on the load.

The invention discloses a preparation method of flexible anisotropy bonding rare earth permanent magnet material, belonging to the field of magnetic materials. The material is prepared by combining the two-step approach accompanying temperature magnetic field orientation technology of which the calendaring process and the accompanying temperature magnetic field orientation process are separated. A certain quantity of anisotropy magnetic powder which is performed with surface treatment by the processing agent in advance, binder and processing agent are evenly mixed; the mixed material is calendered into flaky flexible bonding magnetic body by the calendaring technology; then, the flaky flexible bonding magnetic body is cut into parts which are heated at certain temperature under the condition of heat preservation for certain time, after that, the obtained product is put into an orientation magnetic field for accompanying temperature magnetic field orientation; and the direction of the orientation magnetic field is parallel to the plane normal direction of the flaky flexible bonding magnetic body. In the preparation technology, magnetic powder can overcome the constraint of a bonding system and rotates under the action of magnetic field force to ensure that the direction of easy magnetization of the magnetic powder generally points to the orientation direction, and the magnetic property of prepared flexible anisotropy bonding rare earth permanent magnet material can be greatly improved.

The invention discloses a portable permanent magnet magnetism detection device with an adjustable magnetic field, and belongs to the field of magnetic detection. The device comprises a first magnetic pole head, a second magnetic pole head, a fixing block, a permanent magnet and an adjusting screw rod, wherein the first magnetic pole head and the second magnetic pole head are oppositely arranged on the fixing block, the first magnetic pole head is movably connected with the fixing block and can slide along the fixing block, and the second magnetic pole head is fixedly connected with the fixing block; the permanent magnet is arranged in the fixing block between the first magnetic pole head and the second magnetic pole head; the first magnetic pole head is connected with the second magnetic pole head through the adjusting screw rod which can adjust the distance between the first magnetic pole head and the second magnetic pole head. The device can conveniently adjust the intensity of the magnetic field between the two magnetic pole heads, and has the advantages of being small and exquisite in size, light in weight, convenient to carry, suitable for being used in a laboratory and used outdoors, capable of detecting whether materials have magnetism or not and the strength of the magnetism, and the like.

The present invention relates to a system, for controlling a magnet, which can be used for a magnetron sputtering device. A magnet control system for a magnetron sputtering device of the present invention comprises: a driving power unit; a magnetism generation unit comprising a plurality of magnet arrays; and a magnetism control unit comprising a switch for controlling one or more of the pluralityof magnet arrays such that the magnet arrays can be selectively connected to the driving power unit.

The invention discloses a TEM based device for generating a controllable vortex electron beam. The device is characterized by comprising an electron gun for generating a planar electron beam, a magnetic field controller, and a magnetic needle wound by a conductive coil; the magnetic needle is arranged on a planar electron beam channel via a chip controlled by electrical equipment; the magnetic field controller generates an intensity controllable magnetic field; and the magnetic field is used to modulate the phase of the planar electron beam. The invention also discloses a method for generatingthe controllable vortex electron beam via the device. The device can form magnetic field distribution similar to magnetic monopole in an electronic microscope, so that the vortex electron beam with single track angular momentum and controllable quantum number is obtained.

An adjustable magnetic field generating device under a capsule endoscope tracking system is connected with a magnetic field sensor module in a capsule in a wireless communication mode. The adjustable magnetic field generating device comprises a magnetic field generating circuit, a time sequence control circuit and a wireless feedback circuit. The output of the time sequence control circuit and the output of the wireless feedback circuit are respectively connected with the magnetic field generating circuit, the time sequence control circuit controls the magnetic field generating circuit to generate an alternating magnetic field in a time division mode, the generated alternating magnetic field is detected and processed through the magnetic field sensor module and is fed back to the magnetic field generating circuit through the wireless feedback circuit, the magnitude of the magnetic field is changed, and the intensity of the magnetic field can be automatically adjusted. The alternating magnetic field with the adjustable magnitude can be provided for the adjustable magnetic field generating device under the capsule endoscope tracking system, the intensity of the magnetic field can be automatically adjusted according to a feedback signal transmitted by a magnetic field sensor, and the tracking precision is improved.

The invention provides a magnetic resonance effect based imprinting sensor and belongs to the technical field of the magnetic resonance effect based imprinting sensor in order to provide the magneticresonance effect based imprinting sensor which is high in detection speed, high in precision and high in detection flexibility. According to the technical scheme for realizing the technical effects, the magnetic resonance effect based imprinting sensor comprises a casing, wherein data output ports are formed in one end of the casing, and a field communication bus is connected with a central control unit through the data output ports; the central control unit is arranged on one side of the casing, a magnet strip is arranged on the other side of the casing, and a pair of sensing modules are arranged between the central control unit and the magnet strip in parallel and comprises a first magneto-elastic ionic imprinting sensing module and a second magneto-elastic ionic imprinting sensing module; a first coil is arranged above the first magneto-elastic ionic imprinting sensing module, and a second coil is arranged above the second magneto-elastic ionic imprinting sensing module. The magnetic resonance effect based imprinting sensor is applied to ion solution concentration detection.