1727results about "Coils" patented technology

The invention discloses a coil connecting device for a star imitator magnet and the star imitator magnet, the coil connecting device comprises a shell, a first connecting part and a second connecting part, and a movable space is formed between the outer peripheral surface of each connecting part and the inner wall surface of an accommodating space and between the outer peripheral surface of each connecting part and a connecting hole. The first part of the first connecting part and the second connecting part can relatively rotate around the axial direction of the shell, so that the first connecting part and the second connecting part have a certain degree of freedom of movement in the radial direction of the shell and can adapt to irregular changes of adjacent surfaces of adjacent coils in the radial direction; and the risks of plastic deformation, fatigue cracks and fracture of the connecting part can be reduced.

The invention discloses a single-coil winding type four-eight-pole composite iron system for beam homogenization. The composite iron system comprises a composite magnet current control device, a composite magnet main power supply and four-pole / eight-pole composite iron, the quadrupole / octupole composite iron has eight pole heads, and only one type of excitation coil is wound on each pole head; the current value of the A-type excitation coil is an absolute value of a quadrupole magnetic field excitation current value plus an octupole magnetic field excitation current value; the current value of the B-type excitation coil is an absolute value obtained by subtracting an octupole magnetic field excitation current value from a quadrupole magnetic field excitation current value; the quadrupole / octupole composite iron is used for simultaneously generating a dominant quadrupole magnetic field and an octupole magnetic field, so that the effects of quadrupole iron and octupole iron can be simultaneously realized by only installing one transmission element; the excitation coil structure of the quadrupole / octupole composite iron composite magnet is improved, and only one excitation coil is wound on each pole head, so that the size of the coil structure can be reduced, and the construction cost is reduced.

The invention discloses a linear beam homogenization transmission line debugging method based on a four-and-eight-pole composite magnet, and the method comprises the steps: adjusting the current of four-pole iron, and enabling the X-direction beam near the four-and-eight-pole composite magnet 1 to form a waist; the current of the quadrupole iron of the quadrupole-octupole composite iron 1 is adjusted, so that the Y-direction beam near the quadrupole-octupole composite iron 2 forms a waist; when the octupole field current of the fourth-and-eighth-level composite iron 1 is adjusted, the current of the intersection point is obtained for the second time; when the octupole field current of the fourth-and-eight-level composite iron 2 is adjusted, a method of combining intersection point current and quadrupole iron current increase is adopted. According to the invention, through a method of forming a waist in an X-direction beam near the four-eight-pole composite iron 1, forming a waist in a Y-direction beam near the four-eight-pole composite iron 2, and combining dynamic intersection points and adjustment of current of the four-pole iron, the problem that a transmission line based on discrete components of the four-pole iron and the eight-pole iron in the prior art is poor in transmission efficiency is solved. And the beam homogenization debugging of octopole iron is difficult to homogenize the Gaussian distribution beam.

The invention relates to a multi-pole magnetic field magnetizing test method and a spiral winding group thereof, and relates to the field of automatic magnetizing technology, and the method comprises the steps: constructing a test model, importing design parameters of a magnet to be tested, determining a multi-pole magnetic field distribution theoretical model, and defining a magnetic pole region and a key feature contour line; acquiring magnetic field data, scanning the surface of the magnetized magnet by using an array probe, and acquiring magnetic field intensity actual measurement data of a multi-dimensional coordinate; matching a magnetic pole contour, comparing an actually measured contour line with a theoretical contour line, and establishing sampling point mapping; correcting the deviation data, screening the deviation sampling points exceeding the threshold value, and determining magnetizing process adjustment parameters; and evaluating the magnetizing efficiency, carrying out iterative magnetizing based on the correction parameters, and generating an evaluation report containing indexes such as magnetic field uniformity and the like. The method has the effect of improving the magnetic field intensity and stability of the magnet during orientation magnetization.

The utility model belongs to the technical field of electromagnet coils, particularly relates to a magnetic suspension electromagnet coil, and aims to solve the problems that a coil with a large number of turns can generate a strong magnetic field under the same current, so that the coil with a large number of turns can be adopted to generate a strong and stable magnetic field, but the large number of turns can cause some problems. In order to solve the problems that the energy loss is further increased and even the coil is possibly damaged due to the fact that the resistance of the coil is increased and heating is increased, the utility model provides the following scheme: the coil comprises a hollow framework, a plurality of turns of coils are wound on the hollow framework, and a protective sleeve is wound on the whole outer wall of the plurality of turns of coils; and the outer wall of a single copper wire of the multi-turn coil is covered and sprayed with an insulating layer. When the magnetic suspension electromagnet coil is used, through the design of the protective sleeve, the ceramic insulating coating, the heat dissipation fins, the heat extraction fan, the heat dissipation holes and the like which are made of polyimide film materials, the heat dissipation efficiency and durability of the coil are effectively improved, and stable operation of a magnetic suspension electromagnet is ensured.

A packaged integrated circuit (IC) including a package substrate. The package substrate includes pins; a first metal layer on the pins; a second metal layer on the first metal layer; vias on the second metal layer; an insulation material covering the pins, the first metal layer, the second metal layer, and the vias, and exposing surfaces of the pins and the vias. The packaged IC further includes a semiconductor die on the package substrate, the semiconductor die having a surface opposing the second metal layer; metal posts coupled between the semiconductor die and the exposed surfaces of the vias; and a mold compound covering the semiconductor die and the metal posts, in which the surface is separated from the second metal layer by the insulation material and the mold compound.

The invention discloses a water-cooling pulsed high-intensity magnetic field coil, and belongs to the technical field of pulsed high-intensity magnetic fields. The coil adopts a laminated structure, each laminated sheet is provided with an opening and a boss, and a spiral structure is formed through electrical connection of the bosses. Each lamination is divided into a through-flow part, a water cooling part and a fixed part; the through-flow part is made of red copper, the water cooling part and the fixing part are made of stainless steel, and an integrated copper-steel composite structure is formed through welding. The water-cooling part is provided with water-cooling grooves welded and sealed by a cover plate; and the water-cooling grooves of the laminations are connected in series through water inlet and outlet holes to form a cooling flow channel. The fixing part is provided with a semicircular fixing hole used for limiting and flow guiding. And an insulating sheet is arranged between the adjacent laminations. The coil is pressed tightly through the upper and lower pressing plates and an insulated fixing stud. Through lamination partitioning and copper-steel compounding, the high-strength and efficient water-cooling capacity is achieved, and the problems of insufficient strength and cooling of the pulse high-intensity magnetic field coil under repetition frequency work are effectively solved.

The invention provides a geomagnetic compensation and bias magnetic field generation system and method for cold atom interference. The system comprises a triaxial magnetometer, a triaxial Helmholtz coil, a voltage-controlled current source and an FPGA regulation and control module. The three-axis magnetometer is used for collecting space magnetic field data at a plurality of monitoring positions in the space where the three-axis Helmholtz coil is located in real time; the FPGA regulation and control module is used for calculating control voltage data required by the voltage-controlled current source according to a target magnetic field and any space magnetic field data collected by the three-axis magnetometer in each sampling period, controlling coil current transmitted to the three-axis Helmholtz coil, and outputting the coil current to the three-axis Helmholtz coil. And loop iteration is carried out until the three-axis Helmholtz coil generates a target magnetic field at a plurality of monitoring positions, wherein the target magnetic field is a near-zero magnetic field in the X / Y direction, and the magnetic field intensity in the Z direction is constant and is a non-zero value. The device can respond to the change of the environmental magnetic field in real time, and provides a stable and accurate magnetic field environment for the cold atom interference test on the basis of compensating the influence brought by the geomagnetic field.

A packaged integrated circuit (IC) (300) including a package substrate (110). The package substrate includes pins (321); a first metal layer (323) on the pins; a second metal layer (325) on the first metal layer; vias (322, 324, 326) on the second metal layer; an insulation material (308a, 308b) covering the pins, the first metal layer, the second metal layer, and the vias, and exposing surfaces of the pins and the vias. The packaged IC further includes a semiconductor die (101) on the package substrate, the semiconductor die having a surface (301) opposing the second metal layer; metal posts (305a, 305b) coupled between the semiconductor die and the exposed surfaces of the vias (326); and a mold compound (304, 304a) covering the semiconductor die and the metal posts, in which the surface is separated from the second metal layer (325) by the insulation material (308a) and the mold compound (304a).

The invention belongs to the field of power electronic device optimization design, and particularly discloses a magnetic coupling energy storage element under a high duty ratio and an obtaining method. The method comprises the following steps: establishing an output current ripple model; representing the cross sectional area of the magnetic core based on the peak value of the output current ripple, and further constructing a magnetic core volume model and a winding volume model; taking the total volume of the magnetic coupling energy storage element as a target function, solving an optimal coupling coefficient under different duty ratios, matching a magnetic core material and an air gap length according to the optimal coupling coefficient, selecting a magnetic core cross section area according to the maximum flux density of the magnetic core material, and obtaining structural parameters of the magnetic coupling energy storage element; according to the invention, the size of the magnetic coupling energy storage element is reduced to the maximum extent, and the power density of the converter is increased.

The invention discloses a high-field water-cooling magnet device which comprises a container assembly and a magnet coil assembly, and the magnet coil assembly is located in the container assembly and communicated with the container assembly. The container assembly comprises a hydraulic machine assembly, and the hydraulic machine assembly comprises a cylinder body, a piston, a check ring, a pressure equalizing pad, a first force transmission check ring, a first anti-rotation pin, a second force transmission check ring, a second anti-rotation pin, a first force transmission column and a second force transmission column. The axial force application device has the advantages that axial force application can be performed on the magnet coil assembly, the pressing force on the magnet coil assembly is improved, and the problems of tension fracture and damage caused by coil stress overrun due to overlarge radial expansion electromagnetic force of a magnet coil bit piece and an insulating piece are solved.

An adverse effect on characteristics of a coil component can be reduced. A coil component includes a drum core and first and second wires. The drum core includes a winding core and first and second flanges. The second wire includes first, second and third wound portions. The second wound portion is located on the second flange side with respect to the first wound portion in a direction along a central axis X, and at least a part of the second wound portion is wound around an outer peripheral surface of the winding core. When the second wire is traced from a first end to a second end in the second wound portion, the second wire has a first intersection and a second intersection intersecting a specific one turn of the first wire within a range where the second wire is wound by two turns.

The invention discloses an intelligent magneto-rheological track for robot-assisted machining and application thereof, and the intelligent magneto-rheological track comprises a magneto-rheological unit module which is made of a magneto-rheological material, the magneto-rheological material is packaged in a flexible film, and a coil unit for generating a magnetic field is wound outside the flexible film; and the track control system can control the magnetic field size and the magnetic field distribution of each position of the magnetorheological unit module according to the corresponding relation of the appearance, the shape and the magnetic field of the magnetorheological unit module, and the magnetorheological unit module is adjusted to have the required appearance and the required shape. The magnetic field of the magneto-rheological unit module is regulated and controlled, so that the magneto-rheological unit module can have the rigidity required by operation and operation of the robot, and the magneto-rheological unit module can be regulated to be in the set shape and shape, so that the magneto-rheological unit module can adapt to working faces of various different shapes and different robots; and the robot can be used for machining in large-curvature areas such as aircraft surface skins and narrow space scenes such as air inlet channels.

The invention discloses a quadrupole / octupole composite iron system for beam homogenization. The composite iron system comprises a composite magnet current control device, a composite magnet main power supply and quadrupole / octupole composite iron, the composite magnet current control device is used for controlling a composite magnet main power supply to output quadrupole field coil current and octupole field coil current of quadrupole / octupole composite iron. The quadrupole / octupole composite iron is used for simultaneously generating a dominant quadrupole magnetic field and an octupole magnetic field, so that the effects of quadrupole iron and octupole iron can be simultaneously realized by only installing one transmission element; according to the invention, a quadrupole magnetic field and an octupole magnetic field are generated in the aperture of the composite iron, focusing and homogenization of beam envelope are realized at the same time, the number of transmission elements can be reduced, the length of a transmission line can be shortened, and the construction cost of the beam transport line is reduced. The problem that traditional quadrupole iron and octupole iron cannot be simultaneously installed at the maximum beam envelope position due to the space problem and cannot play a great role of a magnet is solved.

The invention provides a multi-waveform magnetic field generating device for magnetic hyperthermia. The multi-waveform magnetic field generating device comprises a power supply module, a BUCK voltage regulating circuit, a multi-waveform signal generating circuit, a power amplifying circuit, a series resonance inverter circuit, an induction coil, a water cooling module, a temperature acquisition module, a DSP microprocessor and a TFT display screen. The power supply module is combined with BUCK to supply power to the device; the multi-waveform signal generation circuit, the power amplification circuit and the series resonance inverter circuit are used for generating an alternating magnetic field to act on a magnetic medium to generate a heat effect and realize magnetic hyperthermia; the water cooling module is used for reducing the temperature of the induction coil; the temperature acquisition module acquires temperature data of a treatment area and performs output control on the Buck voltage regulation circuit by using the DSP microprocessor so as to regulate the output power of the power amplification circuit powered by the BUCK voltage regulation circuit and realize intelligent temperature control of the magnetofluid; the problems that in the prior art, a magnetic field generation device is single in induction waveform and poor in heat generation effect are solved.

The invention discloses a high-power stepless magnetic damping device and a power control method thereof.The high-power stepless magnetic damping device comprises a magnetic resistance magnetic core mechanism, the magnetic resistance magnetic core mechanism achieves control over high-power stepless magnetic damping according to the electromagnetic damping principle, regulation and control response is fast, continuity of constant-power output is guaranteed, and the high-power stepless magnetic damping device is suitable for large-power stepless magnetic damping. And a circle of Halbach magnet array formed by reinforcing magnets is arranged, so that the field intensity in the unit direction is enhanced, and the generation of high-power magnetic damping is realized. According to the power control method, a static Kalman data fusion updating model is introduced for power updating, speed and accuracy are balanced, a PWM signal is output through a PID controller to adjust the input current of a control coil, and therefore the size of a magnetic field is controlled, control over the size of magnetic damping is achieved, stepless regulation and control are achieved, and the control precision is improved. Therefore, stable output of constant power is ensured.

The invention discloses an intelligent magnetic field generator device based on deep learning and a control method. The device comprises a coil array, a programmable current control module and a deep learning module. The coil array adopts an equidistant square matrix structure and is used for generating specific magnetic flux density distribution in a space target area; the programmable current control module is used for adjusting the power-on current amplitude and direction of each coil of the coil array; and the deep learning module is used for establishing a nonlinear mapping relation between the magnetic field distribution of the space target area and the coil current configuration of the coil array so as to realize magnetic field reverse reconstruction and current parameter prediction. The invention aims to solve the problems of complex modeling, difficulty in solving an inverse problem, low control precision and poor flexibility in a magnetic field adjustment process in the prior art, and quick inverse solution and high-precision reproduction from target magnetic field distribution to coil current parameters are realized through the magnetic field generator device.

Disclosed herein is a coil component that includes a drum core; a terminal fitting fixed respectively to the flange part of the drum core; and a wire wound around the winding core part of the drum core. The terminal fitting has a wire connecting part to which the wire is connected and a mounting part having springiness with respect to the drum core. The distance between the flange part and the mounting part is larger than the distance between the flange part and the wire connecting part.

A multilayer inductor is provided. The multilayer inductor includes a multilayer winding portion comprising a plurality of coil layers that are vertically stacked, and having an inner surface that defines a hollow of the plurality of coil layers and having an outer surface that defines an outer side and a magnetic compensator made of a soft magnetic material and comprising a magnetic wall located at at least one of the inner surface or the outer surface of the multilayer winding portion.

The invention relates to a seabed trapezoidal foldable electromagnetic coil device, which belongs to the technical field of ocean electromagnetic detection and comprises a main bearing beam, an expandable transmitting coil assembly, a receiving coil assembly, a transmission connecting rod, a hinged rotating seat, a sliding connecting seat and a push-pull driving rod. The transmitting coil is of a symmetrically-distributed trapezoidal structure, the receiving coil is in sliding fit with the main bearing beam through the sliding connecting base, the push-pull driving rod is in linkage with the receiving coil to move and the transmitting coil to be unfolded / folded, the device frame is made of a macromolecule non-magnetic material, and the ferromagnetic driving component is arranged in an avoiding mode. Receiving coil plane magnetic field balance is achieved through the non-uniform magnetic field design of the trapezoidal transmitting coil, coil space optimization configuration is completed through a linkage mechanism, folding portability and anti-interference performance of a multi-layer coil are achieved at the same time, direct coupling of a primary field of the transmitting coil to receiving is effectively restrained, the stability and the signal-to-noise ratio of a detection signal are improved, and the detection precision is improved. The method is suitable for complex seabed transient electromagnetic detection scenes carried by AUV / ROV.

Inductor component (100) in SMD package for low-frequency magnetic fields, comprising a housing (102) with a housing base (104) for mounting on a printed circuit board, three windings arranged within the housing (102), in particular essentially orthogonal to each other, along an X, Y and Z winding axis, a plurality of connection contacts (110) arranged on the housing base (104), and a pin configuration with at least two electrical interconnections (130, 132) permanently manufactured within the housing (102), wherein each of the electrical interconnections (130, 132) electrically connects two specific terminal contacts (110) and the terminal contacts (110) are assigned to the winding ends of the X, Y and Z windings, so that each winding can be electrically connected via the terminal contacts (110).

The present invention provides an open-and-closed Rogowski coil and a current transformer, wherein the open-and-closed Rogowski coil comprises a coil frame, which is annular and comprises at least one air gap opening, and a coil, which is a spirally wound coil arranged around the coil frame, wherein the density of the coil adjacent to the air gap opening is greater than the density of the coil away from the air gap opening, and the number of turns is adjusted according to the structure of the open-and-closed Rogowski coil, and the coil adjacent to the air gap opening is increased in turns, so that the density of the coil adjacent to the air gap is greater than the density of the coil away from the air gap, thereby compensating for the lost magnetic flux, thereby improving the accuracy of the open-and-closed Rogowski coil in measuring current.

The high-pressure-resistant sensor comprises a shell, the shell comprises a body and a cover, a cavity is formed in the body, an opening is formed in one end in the length direction of the body, and the cover is detachably arranged at the opening to seal the shell; the sensing unit is contained in the cavity and comprises a double-coil vibration head module and a signal enhancement module, the double-coil vibration head module comprises a supporting framework, a magnetic tank and a coil assembly, the coil assembly is arranged on the supporting framework and comprises an inner coil and an outer coil which are coaxially arranged, and the diameter of the outer coil is larger than that of the inner coil; the axial directions of the inner coil and the outer coil are consistent with the length direction of the body; the signal enhancement module is coaxially arranged on the periphery of the double-coil vibration head module. According to the invention, the signal penetration capability is stronger, and a thicker metal shell can be penetrated; in addition, the magnetic tank and the coil assembly are wrapped by a strip-shaped amorphous nanocrystalline material with high magnetic permeability, so that the penetrating power of signals is effectively enhanced.

The invention discloses an array-type UWPT system, and the system comprises an energy inversion module which comprises a DC power supply and a full-bridge inversion circuit, and the DC power supply is connected with the input end of the full-bridge inversion circuit through a wire, and provides energy for the inversion process of the system; the resonance compensation network comprises a transmitting / receiving side compensation capacitor, and the transmitting / receiving side compensation capacitor comprises a transmitting side compensation capacitor Ctx and a transmitting side compensation capacitor Crx; the reconfigurable coupling mechanism comprises n transmitting coil groups Ltx and m receiving coil groups Lrx; the energy receiving module comprises a bridge rectifier circuit and a load RL; the direct-current power supply is connected with the full-bridge inverter circuit in series, the full-bridge inverter circuit is connected with the transmitting / receiving side compensation capacitor, and the transmitting side compensation capacitor Ctx and the transmitting coil assembly Ltx are connected in series and then connected to the output end of the full-bridge inverter circuit to form an LC series resonance circuit. The n transmitting coil groups and the m receiving coil groups perform energy transmission through electromagnetic coupling, and the receiving coil groups generate high-frequency alternating current after sensing magnetic field changes of the transmitting coils and are connected to the input end of the bridge rectifier circuit through wires.

The present invention discloses a multi-dimensional discrete micro-miniature high-speed on-off valve, comprising: a valve body comprising a first end cap and a second end cap disposed opposite each other, a magnetic yoke connected between the first and second end caps; a valve port within the first end cap, a ball valve core disposed on the side of the valve port facing away from the second end cap to seal the valve port; a push rod disposed within the valve body, the end of the push rod contacting the end of the ball valve core facing the second end cap, and an armature sleeved on the push rod; multiple coil assemblies disposed between the armature and the valve body, each coil assembly comprising an independently controllable axial coil and at least one radial coil, wherein the radial coil within the same coil assembly is located on the side of the axial coil facing away from the armature; when any coil assembly is energized, the armature drives the push rod to push the ball valve core toward or away from the valve port, thereby opening or closing the valve port. Also disclosed is an electrical excitation method for using the above-described on-off valve. The on-off valve has the advantages of high dynamic performance, small axial dimensions, high control accuracy, and a high degree of intelligence.

To provide a coil component that can further enhance resistance to external impacts while minimizing the reduction in the degree of freedom in coil design.SOLUTION: A coil component includes a main body part including an insulating element, a coil, and first and second conductor layers electrically connected to the coil, the main body part is substantially rectangular and has a bottom surface for mounting, a top surface, a pair of end surfaces, a pair of side surfaces, a first ridgeline portion between the top surface and one of the end surfaces, a second ridgeline portion between one of the pair of side surfaces and one of the pair of end surfaces, and a third ridgeline portion between the top surface and one of the pair of side surfaces, the first conductor layer is exposed on a portion of the bottom surface of the main body part and at least a portion of one of the pair of end surfaces, the second conductor layer is exposed on a portion of the bottom surface of the main body part and at least a portion of the other of the pair of end surfaces, each of the first to third ridgelines is formed by a curved surface that is rounded so as to be convexly curved, and the radius of curvature of the first ridgeline is greater than the radius of curvature of each of the second ridgeline and the third ridgeline.SELECTED DRAWING: Figure 1

A coil component includes an exterior body, a coil, and a pair of terminal electrodes. The coil is disposed inside the exterior body. The pair of terminal electrodes are electrically connected to the coil and are disposed on the exterior body. The exterior body includes a first portion that covers the coil and is made of a resin, and a second portion including a side surface on which the pair of terminal electrodes are disposed. The second portion includes a material having a relative permittivity lower than a relative permittivity of the resin and is disposed between the coil and the pair of terminal electrodes.

An inductive device is provided. The inductive device includes a laminated body and two external electrodes. The laminated body includes an insulator and a plurality of conductive wiring layers stacked in a first direction. The conductive wiring layers are embedded within the insulator, and any two adjacent ones of the conductive wiring layers are electrically connected to each other to form a coiled conductor extending spirally. The external electrodes are disposed on the laminated body and electrically connected to the coiled conductor, and the external electrodes are spaced apart from each other. Each of the external electrodes includes a base plate, a lateral wall, and a plurality of stress dispersing structures extending toward the coiled conductor and protruding from at least one of the base plate and the lateral wall, and the stress dispersing structures are spaced apart from each other and engaged with the laminated body.

The invention relates to the technical field of electromagnetic coils, in particular to a Halbach array planar coil structure unit. The Halbach array planar coil structure unit is composed of a first substructure, a second substructure and a third substructure. According to the invention, a planar electromagnetic coil is adopted to form a Halbach array permanent magnetic field effect; the invention discloses a Halbach array permanent magnet structure, and aims to solve the problems that the existing Halbach array permanent magnet structure is difficult to miniaturize and rigid, cannot get rid of the limitation of permanent magnet materials, is difficult to realize a sine distribution magnetic field in a real sense and is low in electromagnetic utilization rate.

The invention discloses a deflection magnet and a magnetic deflection device with the same. A deflection magnet belongs to the technical field of magnetic deflection devices and comprises a magnet frame, a magnetic pole sheath and at least one magnet coil, and the magnet coil is at least partially mounted between the magnet frame and the magnetic pole sheath to prevent particles from directly impacting the magnet frame and the magnet coil. The heat of the magnetic pole sheath can be taken away when the sheath cooling medium flows through the sheath cooling flow path, and the heat of the magnet coil can be taken away when the coil cooling medium flows through the coil cooling flow path, so that the temperature of the magnetic pole sheath and the temperature of the magnet coil are reduced; therefore, the temperature of the magnet coil can be quickly reduced, and the heat dissipation efficiency of the magnet coil is improved.