42 results about "Flux lines" patented technology

The invention relates to the technical field of nondestructive testing, in particular to a gear defect intelligent detection method and system based on a magnetic memory technology. If the service gear is an abnormal service gear, a plurality of abrupt change magnetic flux signals are calculated by moving a sliding window so as to draw a magnetic flux line trend distribution diagram, the magnetic flux line trend distribution diagram is identified and analyzed, and an actual magnetic domain structure of each quasi magnetic flux leakage characteristic point in the magnetization process is obtained; and analyzing the actual magnetic domain structure to obtain a plurality of magnetic moment vector variations of each quasi-magnetic leakage flux feature point, analyzing defect features of the service gear based on the change amplitude of the magnetization intensity of the strong magnetic field for the magnetic moment vector of the normal service gear and the plurality of magnetic moment vector variations, and finally outputting an accurate defect type. According to the invention, the stress defect of the gear can be detected, positioned and identified based on the magnetic memory technology, so that a reliable fault detection basis is provided for the maintenance of the gear, and the accuracy and sustainability of the use and maintenance of the gear are improved.

A device for implementing a non-reciprocal bandpass filter is provided. The device includes a plurality of capacitively-coupled shunt resonators. Each capacitively-coupled shunt resonators includes a plurality of superconducting quantum interference devices (SQUIDs) connected to each other, a flux line inductively coupled to the plurality of SQUIDs, and a capacitor connected in parallel to the plurality of SQUIDs.

The invention discloses an ultra-low field nuclear magnetic resonance measurement device with a large-range adjustable background field, and also discloses an ultra-low field nuclear magnetic resonance measurement method with a large-range adjustable background field. According to the ultra-low field nuclear magnetic resonance measurement device with the large-range adjustable background field, a flat solenoid is adopted to realize a high background magnetic field requirement and an ultra-low environment magnetic field; the flat solenoid can accommodate more coils and obtain more turns, so that a wider background field adjustable range is realized; two ends of the flat solenoid extend out of the magnetic shielding module, so that a magnetic flux line at the tail end of the flat solenoid can be connected to the outside of a shielding area, and the problem of non-uniformity of a background field generated by a common solenoid coil is solved; interference of an environmental magnetic field is eliminated through passive magnetic shielding and active magnetic field compensation, firstly, passive magnetic shielding is performed on the environmental magnetic field through a plurality of electromagnetic shielding cylinders, then a magnetic field opposite to the environmental magnetic field is generated through a shimming coil to perform active magnetic field compensation, and interference of the environmental magnetic field is counteracted; the shimming coil can also improve the uniformity of the central magnetic field.

The invention discloses a quantum bit magnetic flux crosstalk compensation method and device, electronic equipment and a storage medium, and relates to the technical field of quantum computing, and the method comprises the steps: determining adjacent quantum bits of a quantum bit; determining whether there is magnetic flux crosstalk between the quantum bit and the adjacent quantum bit; if the magnetic flux crosstalk exists, the voltage applied to the magnetic flux line of the quantum bit is adjusted for multiple times until the difference value between the obtained first actual voltage value of the quantum bit and the initial actual voltage value of the quantum bit is smaller than a difference threshold value, and after each adjustment, the state of the quantum bit is turned over by using a single quantum bit gate, so that the quantum bit is turned over. Obtaining a first actual voltage value of the quantum bit; determining adjacent quantum bits and a magnetic flux crosstalk matrix of the quantum bits based on the adjustment amount of the voltage; and when logic gate operation is carried out on the quantum bit and the adjacent quantum bit, magnetic flux crosstalk compensation is carried out on the quantum bit and the adjacent quantum bit based on the magnetic flux crosstalk matrix. The technical effect of improving the accuracy of quantum calculation is achieved.

An apparatus (460, 560) and method for manufacturing a sintered flux focusing permanent magnet (250, 350) are described. The apparatus includes (a) a mold (470, 570); and (b) a first magnetic device (461, 561-1, 561-2) and a second magnetic device (464, 564). The first magnetic device (461; 561-1, 561-2) includes a first yoke structure (463; 563-1, 563-2) having a first shape, and the second magnetic device (464, 564) includes a second yoke structure (466, 566) having a second shape. The second shape is spatially different from the first shape. In addition, the spatial difference in the shapes of the two yoke structures (463, 466; 563-1, 563-2, 566) causes a non-uniform magnetic field, so that the magnetic field within the mold cavity (472, 572) is associated with an extended angular distribution of magnetic flux lines. A sintered flux focusing permanent magnet (250, 350) manufactured using the method, an electromechanical transducer (140) including the sintered flux focusing permanent magnet (250, 350), and a wind turbine (100) are further described.

Reluctance actuator (1) comprising a ferromagnetic armature (2) and a ferromagnetic mover (3), together forming a magnetic circuit, wherein the mover (3) occupies a position with reference to the ferromagnetic armature (2) which depends on a magnetic flux in the ferromagnetic armature (2) and the mover (3), wherein the ferromagnetic armature (2) is split into at least a first part (2') and a second part (2") that are movable with respect to each other so as to provide a variable airgap or air gaps (4, 5) between the first part (2') and the second part (2''), and that at least one piezo-electric actuator (6, 7) connects to the first part (2') and to the second part (2'') of the ferromagnetic armature (2) so as to set the variable airgap or airgaps (4, 5) between the first part (2') and the second part (2"), and the ferromagnetic armature (2) is symmetric with reference to a central actuator axis (8) through a permanent magnet (9) from which the magnetic flux lines originate that transmit in opposite directions through the mover (3) and through opposite poles (10, 11) of the ferromagnetic armature (2) between which opposite poles (10, 11) the mover (3) is located.

A magnetic momentum transfer generator utilizes three or more magnets aligned with each other. A first control magnet (1619 is position outside a coil (1). A second magnet (163) is positioned within the winding (35) of the coil and a third magnet (165) is positioned on the opposite side of the coil opposite the control magnet. When the control magnet rotated or moved, mutual magnetic flux lines generated by all three magnets and passing through the coil winding are aligned at right angles to the coil, thereby inducing a maximum voltage at the terminals (35T). this generator is particularly useful for short burst radio micro-transmitters that can be used for battery-less and wireless switching applications.

Base components are placed into recesses of a holder. Each recess includes a flat bottom surface parallel to a horizontal direction. A lid is placed above the holder at a predetermined distance from the bottom surface. A magnetic field with a magnetic flux line intersecting perpendicularly with the bottom surface is caused to act on the base components in the recesses to rotate the base components about their longitudinal axes to have internal electrode layers parallel to the magnetic flux line.

The invention relates to a unique configuration of magnets or electromagnets arranged on the inside surface of a spherical housing. Using two hemispherical housings with attached electromagnets wound with tapered cylindrical windings mounted together to form a full spherically configured magnetic flux concentrator is presented with calculated flux lines. Tapered cylindrical wound electromagnets fulfill two needs, one is to help with the flux concentration and the other is to fit the coil on the inside of the spherical housing, maximizing mounting space and use of available volume. A coil gun is presented as a practical application using three concentrators ganged together.

The present application relates to a kind of stator profiled mixed lamination structure and motor thereof, including by the first stator sheet of multiple pieces Axially laminated and formed radial lamination group, the radial lamination group is annular, the radial lamination group includes multiple stator teeth and the stator yoke at the tail of the stator tooth, further including by the second stator sheet of multiple pieces Radially laminated and formed axial lamination group, the middle part of the stator yoke is provided with slot, the axial lamination group is inserted into the slot, the second stator sheet is perpendicular to the first stator sheet, the axial lamination group is formed in radial along the limit of the magnetic flux line from circumferential to radial Staircase shape.The axial lamination group is formed in radial along the limit of the magnetic flux line from circumferential to radial in the present application Staircase shape, modulates the magnetic force line distribution of leakage magnetic region, to enhance the salient pole effect of stator, enlarge the weak magnetic region of motor and promote the highest speed.

An ultrasonic probe, including an ultrasonic transducer; a metal inner housing that is thermally connected to the ultrasonic transducer; and a magnetic flux line generator disposed at a position at least partially surrounded by the inner housing and having a first pole and a second pole, wherein the inner housing comprises a magnetic flux line-passing structure that allows passage of magnetic flux lines from the first pole back to the second pole.

The invention relates to a stator special-shaped hybrid lamination structure and a motor thereof, the stator special-shaped hybrid lamination structure comprises a radial lamination group formed by axially laminating a plurality of first stator steel sheets, the radial lamination group is annular, and the radial lamination group comprises a plurality of stator teeth and stator yokes located at the tails of the stator teeth; the axial lamination group is formed by laminating a plurality of second stator steel sheets along the radial direction, a slot is formed in the middle of the stator yoke, the axial lamination group is inserted into the slot, the second stator steel sheets are perpendicular to the first stator steel sheets, and the second stator steel sheets are perpendicular to the first stator steel sheets. And the axial lamination group turns along the boundary of the magnetic flux line from the circumferential direction to the radial direction to form a step shape. The axial lamination group turns along the boundary of the magnetic flux line from the circumferential direction to the radial direction to form a step shape, and the magnetic line distribution of the magnetic leakage area is modulated, so that the stator salient pole effect is enhanced, the weak magnetic area of the motor is expanded, and the maximum rotating speed is increased.

The application discloses a kind of background field wide-range adjustable ultra-low field nuclear magnetic resonance measuring device, and a kind of background field wide-range adjustable ultra-low field nuclear magnetic resonance measuring method is also disclosed, the present application adopts flat solenoid to realize high background magnetic field requirement and ultra-low ambient magnetic field, flat solenoid can also accommodate more coil and obtain more turns, realize more extensive background field adjustable range;Flat solenoid both ends are stretched outside magnetic shielding module, which can ensure that the magnetic flux line at the end of flat solenoid is connected outside the shielding area, eliminating the problem of background field inhomogeneity generated by ordinary solenoid coil;The present application can eliminate the interference of ambient magnetic field by passive magnetic shielding and active magnetic field compensation, first, the ambient magnetic field is shielded by multiple electromagnetic shielding cylinders, and then the magnetic field opposite to the ambient magnetic field is generated by the shim coil to actively compensate the magnetic field, to offset the interference of ambient magnetic field;The shim coil can also improve the uniformity of the central magnetic field.

There is provided mitigating Purcell loss at qubit frequency. A flux line for manipulating at least one qubit, comprises: a first segment (1302) for connecting to an input terminal for receiving a control signal; and a second segment (1304, 1604) for coupling the control signal to a Superconducting Quantum Interference Device (SQUID) operatively connected to the at least one qubit, the second segment is arranged consecutive with respect to the first segment (1302), and the first segment and the second segment are configured to have an impedance mismatch at a qubit frequency of the at least one qubit.

A magnetic induction furnace (1) suitable for heating, for example, solid or tubular metal blanks (5) to be extruded, made of non-ferrous metal material, having various lengths and diameters, comprising a fixed body or framework (16) in which an electric motor (21) defined by an electric stator (23) is arranged, the invention relates to a heating device (1) comprising an electric stator (2) into which an annular electric rotor (25) connected to a rotor body or tubular support (26) carrying a plurality of permanent magnets (27) arranged to define a hollow magnetic barrel in which a cavity (10) adapted to receive a non-rotating blank (5) to be heated is provided; the permanent magnets (27) of the rotor body (26) comprise main permanent magnets (27A) magnetized in the radial direction and auxiliary permanent magnets (27B) magnetized in the axial direction with respect to the rotor body (25), said magnets (27A, 27B) generating flux lines of the magnetic field (X), said flux lines pointing deeply into the interior of a cavity (10) adapted to receive the blank (5), in order to improve the induction heating of the blank relative to conventional magnetic arrangements.

This utility model relates to the field of electrical engineering technology and discloses a zero-flux current transformer, including a housing, an insulating bushing, a base, and a transformer body. The transformer body is vertically mounted inside the housing, and a primary conductor is installed inside to carry high-voltage direct current. A zero-flux coil is installed at the upper end of the transformer body to sense the magnetic field generated by the current in the primary conductor and output a secondary current. The zero-flux coil is located inside a shield and grounded to improve measurement accuracy and stability. The transformer is filled with SF6 gas for electrical insulation, and a silicone rubber coating is provided on the outside of the zero-flux coil as a buffer layer to protect the coil from the influence of internal gas pressure. The transformer body is connected in series in a DC circuit system through the primary conductor, and the secondary current is introduced into the zero-flux electronic module via a cable to output a secondary signal. This utility model improves the measurement accuracy and stability of the current transformer, enhances safety and reliability, and is suitable for high-voltage direct current environments.

The invention relates to the technical field of linear motors, and discloses an actuating module and a linear motor, the actuating module comprises a movable assembly and a fixed assembly, and the movable assembly comprises a coil movably arranged along a first direction; the fixing assembly comprises at least two magnet yoke structures and at least two magnets, each magnet yoke structure extends in the first direction, every two adjacent magnet yoke structures are oppositely arranged in a spaced mode, the two magnets are arranged between the two adjacent magnet yoke structures and arranged at the two opposite ends of the magnet yoke structures in the first direction, the magnetic field directions of the two magnets are the same, and the magnetic field directions of the two magnets are the same. Therefore, the magnetic flux lines circulate at the two ends of the magnets in the first direction, a magnetic dense area is formed between the two magnets, one magnet yoke structure is sleeved with the coil, and at least one part of the coil is arranged in the magnetic dense area. According to the linear motor, the occupied space of the linear motor in the radial direction can be reduced, and therefore the peripheral size can be reduced.

An ultrasonic machining device with inner and outer ring design, an ultrasonic spindle having same, an ultrasonic machine tool and an ultrasonic drill. Said ultrasonic machining device comprises a tool (1), a wireless transmission mechanism (3) and an ultrasonic transducer (2); the wireless transmission mechanism (3) comprises a transmitting unit (31) and a receiving unit (32) which are arranged in an inner ring and an outer ring; the ultrasonic transducer (2) is electrically connected to the receiving unit (32); and structural parameters of the transmitting unit (32) and the receiving unit (32) meet a preset relational expression, such that the apparent power and the introduced peak current of the transmitting unit (31) and those of the receiving unit (32) can match respective working structural parameters and performance, and on a path of radial circulation of a magnetic flux line, the structure of the transmitting unit (31) and the structure of the receiving unit (32) can better transmit and receive magnetic field energy, thereby better converting the energy of the wireless transmission mechanism (3) into mechanical vibration, reducing the temperature and the temperature rise speed of the transmitting unit (32) and the receiving unit (32) in a working state, improving the stability of continuous working of the ultrasonic spindle, and improving the energy conversion rate.

The embodiment of the invention relates to an integrated system-in-package for magnetic field-based current monitoring. An integrated system for current monitoring includes a package and a MEMS sensor device disposed inside the package to provide an output electrical signal indicative of a current to be monitored. A sensing coil is provided within the package. The monitored current is passed through the sense coil. The MEMS sensor device is arranged relative to the sensing coil to be affected by a flux line of a magnetic field generated by the sensing coil as a whole as a function of the current to be monitored.

The utility model relates to the technical field of magnetizing detection, and discloses a full-automatic magnetizing detection all-in-one machine which comprises a main body mechanism, a detection mechanism and a supporting mechanism, the detection mechanism is located at the top of the main body mechanism, the supporting mechanism is located at the bottom of the main body mechanism, and the main body mechanism comprises a power supply bin. The top of the workbench is fixedly connected with a power source bin, the output end of the power source bin is fixedly connected with a power source connecting wire, and the output end of the power source connecting wire is fixedly connected with a magnetic flux coil. According to the utility model, through the arrangement of the top baffle plate, firstly, the magnet needing to be magnetized is sleeved in the limiting column, the power supply is started through the power supply bin, the power supply is connected into the magnetic flux coil of the mounting plate through the power supply connecting wire, and a magnetic field is generated through the magnetic flux coil; and then magnets sleeving the surfaces of the limiting columns are magnetized through an internal magnetic field, overall isolation is carried out through a top baffle, and isolation is prevented from being generated in the magnetizing process.

The invention provides a magnetic flux wrench which comprises an outer shell, a circuit board, a sleeve, a first magnetic sheet, a second magnetic sheet and a magnetic flux coil. The circuit board is arranged in the outer shell; the sleeve comprises a sleeve body, one end of the sleeve is electrically connected with the circuit board, and the other end of the sleeve is partially exposed out of the outer shell. The first magnetic sheet has different positive and negative poles and sleeves the peripheral surface of the sleeve body; the second magnetic sheet has different positive and negative poles and sleeves the peripheral surface of the first magnetic sheet; the magnetic flux coil is arranged between the first magnetic sheet and the second magnetic sheet and controlled by the circuit board, and the magnetic flux coil can drive the first magnetic sheet to rotate relative to the second magnetic sheet after being electrified so as to drive the sleeve body to rotate forwards or backwards. According to the invention, a user can construct in a narrow or compact extreme environment, and the device has the advantages of light weight, miniaturization and convenience in operation, is suitable for construction of electronic elements in precise electronic products, and has the advantages of time saving, labor saving and labor and time cost saving during operation.

The utility model relates to the technical field of electric appliance engineering, and provides a 35kV cage-type structure high-throughput line arrester, which comprises a plurality of first through holes distributed at intervals along the axis direction of an insulating cylinder, the two end plugging blocks are arranged at the two ends of the insulating cylinder respectively, and the two end plugging blocks and the insulating cylinder form a cage type space. The resistor piece is arranged in the cage type space, the two ends of the resistor piece are electrically connected with the two end plug blocks respectively, a gap is formed between the resistor piece and the inner wall of the insulating cylinder, and the gap and the first through hole are filled with silicon rubber. According to the technical scheme, the problem of poor voltage release performance of the lightning arrester in the prior art is solved.

Solenoid valve (900) comprising a valve body (1) in which pneumatic connections and a valve seat are obtained, the latter alternately putting in fluidic communication at least two of said pneumatic connections, and a driving assembly operatively connected to the valve body (1). The driving assembly comprises a coil (20) for generating a magnetic field, identifying a central seat coaxial with a coil axis. Moreover, the driving assembly comprises a movable core (22), arranged coaxially to the coil (20) and axially translatable between a first closing position of the valve seat and a second opening position of the valve seat, and a fixed core (24), also arranged coaxially to the coil (20). The driving assembly further comprises an armature made of ferromagnetic material and magnetically coupled to the coil (20) so as to close the lines of force of the magnetic field generated by the coil (20). The armature comprises a head portion (260) extending in a direction substantially transverse to the coil axis, a side portion (262) extending in a direction substantially parallel to the coil axis, and a base portion (264) extending in a direction substantially transverse to the coil axis opposite to the head portion (260), wherein an axial through opening is obtained in the base portion (264), in which the movable core (22) is partially housed and sliding. The driving assembly comprises a polar expansion (266) surrounding the movable core (22) so as to increase the interface surface between the movable core (22) and the flux lines of the magnetic field, wherein the polar expansion (266) is made in one piece in a single body with the base portion (264) of the armature.

A vibration generating device includes: a stationary body; a movable body housed in the stationary body; a guide member configured to guide the movable body so that the movable body is reciprocally movable in the stationary body along a left-and-right direction; a magnetic flux-generating member fixed to the movable body and configured to generate a magnetic flux along an up-and-down direction; a coil fixed to the stationary body to cross the magnetic flux and includes electrically conductive wires extending along a front-and-back direction and being juxtaposed along the left-and-right direction; and a magnetic member fixed to the stationary body and disposed at an outer side of the coil. The magnetic member is disposed to generate an attractive force to attract the movable body located at a position off a center of a movable range of the movable body, to the center of the movable range of the movable body.

A magnetic induction furnace configured to heat solid or tubular metal billets, of various lengths and diameters, made of non-ferrous materials. The furnace includes a fixed body in which there is arranged an electric motor having an annular rotor rotatably disposed in a stator. The annular rotor is joined to a rotor body carrying a plurality of permanent magnets arranged so as to define a hollow magnetic cylinderhaving a cavity configured to contain a non-rotating billet to be heated. The permanent magnets of the rotor body comprise main permanent magnets magnetized in the radial direction with respect to such rotor body and auxiliary permanent magnets magnetized in the axial direction. The permanent magnets generate flux lines of a magnetic field directed inwardly, towards an interior of the cavity configured to contain the billet so as to improve the heating thereof.

This beam source generates a beam containing atoms or molecules in metastable excited states and comprises: an emission unit for emitting the atoms or the molecules; an irradiation unit for irradiating the atoms or the molecules with an electron beam; and a generation unit for generating a magnetic field in a space in which the atoms or the molecules are present and at least a part of the trajectory of the electron beam is generated. The irradiation unit comprises a cathode and an anode sandwiching said space. A first direction of the electrical flux line generated in said space by the irradiation unit or the opposite direction thereof coincides with a second direction of the magnetic flux line generated in said space by the generation unit. The emission unit comprises a wall which is provided between the cathode and the anode and has a first hole for emitting the atoms or the molecules toward the anode. A third direction in which the emission unit emits the atoms or the molecules coincides with the first direction or the opposite direction thereof. The anode comprises a portion projecting toward the cathode and having a second hole at the tip. The cathode, the first hole, and the second hole are aligned along a substantially straight line in the first direction. The beam is emitted from the second hole.

Provided is a conveyance device that conveys a conveyance object having a magnetic body, the conveyance device including: a plurality of coils configured to generate magnetic flux acting on the magnetic body; a coil driving unit configured to apply a voltage to each of the plurality of coils; and a calculation control unit including a current control unit and a position estimation unit. The current control unit determines the voltage. The position estimation unit estimates a position of the conveyance object based on a change in a current generated by applying a voltage pulse to the coils and switches, according to a position estimation value that indicates the position of the conveyance object estimated by the position estimation unit, between a speed control mode in which a speed of the conveyance object is controlled and a current control mode in which a current through the coils is controlled. Accordingly, in the conveyance device that has a function of estimating the position of the conveyance object based on information on the current flowing through winding wires of the coils, it is possible to implement stable conveyance speed control even in a section in which accuracy for estimating the position or speed of the conveyance object is low.

A device for implementing a non-reciprocal bandpass filter is provided. The device includes a plurality of capacitively-coupled shunt resonators. Each capacitively-coupled shunt resonators includes a plurality of superconducting quantum interference devices (SQUIDs) connected to each other, a flux line inductively coupled to the plurality of SQUIDs, and a capacitor connected in parallel to the plurality of SQUIDs.

Base components are placed into recesses of a holder. Each recess includes a flat bottom surface parallel to a horizontal direction. A lid is placed above the holder at a predetermined distance from the bottom surface. A magnetic field with a magnetic flux line intersecting perpendicularly with the bottom surface is caused to act on the base components in the recesses to rotate the base components about their longitudinal axes to have internal electrode layers parallel to the magnetic flux line.

Provided are a magnetism modulating ring structure, a magnetic gear assembly, and a compound motor. The magnetism modulating ring structure includes a plurality of modulating units and a plurality of connection parts. Each two adjacent modulating units are connected by one of the plurality of connection parts to form the magnetism modulating ring structure, and the magnetism modulating ring structure is arranged within an annular gap enclosed by a first rotor structure and a second rotor structure. A groove structure is formed on one side of the modulating unit facing the first rotor structure, and two sides of the groove structure respectively form a curved boot-like part, and an edge of the curved boot-like part facing the second rotor structure has a curved contour line parallel to flux lines passing through an inside of the curved boot-like part.