106 results about "Electromagnetic system" patented technology

The invention belongs to the technical field of magnetic variable measurement, and particularly relates to a power driving compensation method and system for magnetostrictive load characteristic monitoring, and the method comprises the steps: obtaining a reference zero point of magnetic performance evolution in a cold state environment of an electromagnetic system according to the center frequency of the electromagnetic system; calculating a current main frequency impedance module value and a phase difference through an electrical parameter characterization method, and obtaining a thermal drift index reflecting a hysteresis loop distortion degree in combination with a reference zero point; obtaining correction factors of all orders based on the thermal drift index and the average output power at the current moment, and dynamically updating a coefficient vector of the inverse model; and constructing a pre-distortion driving voltage signal capable of counteracting nonlinear interference by using the new coefficient and the ideal guided wave voltage sequence, and inputting the pre-distortion driving voltage signal to a power amplifier to drive the magnetostrictive transducer. According to the invention, the problem of predistortion failure under a variable-temperature working condition in the prior art is solved, and the signal-to-noise ratio of high-power long-distance guided wave detection is remarkably improved.

The utility model relates to a relay. The relay includes: a base; the contact assembly comprises a first movable spring part, a second movable spring part, a first static spring part and a second static spring part which are arranged on the base, the first movable spring part is opposite to the first static spring part, the second movable spring part is opposite to the second static spring part, and at least part of the first static spring part can generate flexible deformation; the electromagnetic system is arranged on the base and used for driving the first movable spring part and the second movable spring part to move in the direction close to or away from the first static spring part and the second static spring part. And the stroke difference that the electromagnetic system drives the first movable spring part and the first static spring part to make contact is smaller than the stroke difference that the electromagnetic system drives the second movable spring part and the second static spring part to make contact. According to the relay, the first static spring part can absorb contact stress through flexible deformation, and the first static spring part and the first movable spring part are prevented from being damaged and deformed due to stress.

The magnetic separation column comprises an ore feeding hopper, a tailing overflow groove, a separation column body, an electromagnetic system, a concentrate opening and a water feeding pipe, the ore feeding hopper is arranged at the top of the separation column body, the lower portion of the separation column body is communicated with the separation column body, the tailing overflow groove is formed in the upper portion of the separation column body, the concentrate opening is formed in the bottom of the separation column body, and the electromagnetic system is arranged outside the separation column body in a sleeved mode. The water supply pipe is inserted into the lower part of the sorting column; the device is characterized by further comprising a magnetism gathering medium body, the magnetism gathering medium body is fixedly arranged in the separation column, and the top of the magnetism gathering medium body corresponds to the uppermost electromagnetic system. According to the utility model, the phenomenon that fine-particle magnetite moves upwards along with rising water flow and enters tailings to cause black running is effectively avoided, so that the recovery rate of iron ore concentrate is increased, and the grade of the tailings is reduced.

The utility model provides a permanent magnet type electromagnetic system and a contactor. The permanent magnet type electromagnetic system comprises a static iron core, two coil windings, a movable iron core and a magnetic conduction driving assembly. The two coil windings are arranged on the static iron core; the movable iron core is arranged opposite to the static iron core along a first direction; the magnetic conductive driving assembly is connected with the movable iron core, a first magnetic field force is generated between the magnetic conductive driving assembly and the static iron core, the first magnetic field force is used for driving the magnetic conductive driving assembly to move towards the movable iron core so as to reset the movable iron core, and a second magnetic field force is generated between the movable iron core and the static iron core so as to reset the movable iron core. And a third magnetic field force is generated between the static iron core and the coil winding. The third magnetic field force is opposite to the first magnetic field force, and the second magnetic field force is opposite to the first magnetic field force. The moving stroke of the movable iron core can be effectively improved.

The application belongs to the technical field of wind turbine simulation, and provides a wind turbine full-closed loop simulator and method based on a field programmable gate array, which comprises a field programmable gate array chip, an ARM chip and a digital-analog interface connected with the field programmable gate array chip; the application adopts the field programmable gate array chip, and realizes transient real-time simulation of the electromagnetic system of the wind turbine by means of the powerful parallel computing capability of the field programmable gate array chip; compared with the prior art, the application can quickly verify the effect of the control strategy by using the built-in controller, and can access the actual wind turbine controller through the digital-analog interface to perform hardware-in-the-loop simulation and test the control effect; meanwhile, the ARM chip is used as a real-time operation carrier of the wind turbine controller algorithm, and the field programmable gate array chip and the ARM chip interact with real-time data through a digital-analog channel to realize a wind turbine closed loop real-time simulation platform.

The present application relates to the technical field of geophysical electromagnetic exploration data processing, and specifically discloses a kind of orthogonal digital phase-sensitive detection time-frequency electromagnetic complex response extraction method, automatically extracts base frequency and initial phase using transmitter stored time-stamped current data, constructs zero initial phase orthogonal reference signal, carries out two-way digital phase-sensitive detection to receiver full waveform sampling data, obtains in-phase component and quadrature component, so as to calculate the complex response amplitude and phase information of target frequency.The present application does not need analog phase-locked loop and artificial phase modulation process, can stably extract complex response parameters under strong interference and strong noise background, is especially suitable for array time-frequency electromagnetic receiver full waveform sampling data post-processing, without transmitting current waveform to each receiving node in real time, improves the flexibility and scalability of time-frequency electromagnetic system.

The application relates to the field of switch electric appliances, in particular to a contactor with built-in fuse. The contactor with built-in fuse comprises a first contactor and a second contactor, the first contactor comprises a first electromagnetic system, a first cover shell, a first movable contact bridge, a first static contact and a second static contact; the second contactor comprises a second electromagnetic system, a second cover shell, a second movable contact bridge, a third static contact and a fourth static contact; the contactor further comprises a fuse, the fuse comprises a third cover shell, a first fuse static contact, a second fuse static contact and a fuse body; the second static contact, the first fuse static contact, the fuse body, the second fuse static contact and the fourth static contact are connected in series. The contactor with built-in fuse has the advantages that the first contactor, the fuse and the second contactor are integrated and connected in series, the copper bars and the fuse base between devices are reduced, and the contactor has the functions of conduction and breaking under normal current and the fuse has the function of melting under short-circuit current.

The invention discloses an antenna for carrying out electromagnetic radiation and receiving by using a rotary wing of an unmanned aerial vehicle and a design method thereof, and the method comprises the steps: 101, carrying out the modeling of a rotor-antenna conformal structure, and building a rotor-antenna integrated three-dimensional parameterized model; 102, designing a rotary conduction feed structure, and designing a high-speed coaxial rotary joint according to impedance continuity, mode integrity and isolation indexes of a static end and a moving end; 103, carrying out time-varying electromagnetic modeling and optimization analysis; 104, carrying out multi-rotor collaborative design, and coordinating the phase and angle relationship of each rotor; and 105, implementing and verifying. The arrangement form of the antenna array on the unmanned aerial vehicle is innovatively provided, the antenna is deployed by highly utilizing the structure of the unmanned aerial vehicle, the formed array can realize the functions of enhancing communication, navigation interference resistance and the like of the unmanned aerial vehicle by utilizing rotation information, and the unmanned aerial vehicle can be effectively controlled under the condition that the aerodynamic performance and the structure of the unmanned aerial vehicle are not influenced. And the integration level and the stability of the unmanned aerial vehicle electromagnetic system are improved.

The application relates to the technical field of electric control elements, in particular to a miniaturized high-protection DC contactor, so as to solve the problems that the process operation is complicated, time-consuming and large in space ratio when silicon rubber is generally used for internal filling of the traditional DC contactor, and finally the maintenance convenience of the internal filling structure of the DC contactor is poor and the overall application efficiency is low. The cover plate of the DC contactor is clamped with the base assembly through self-back dowel, the electromagnetic system drives the contact bridge mechanism to contact or separate from the static contact of the base assembly, the traditional screw column type base packaging structure is replaced, the space utilization rate in the shell is significantly improved by combining the up-down displacement of the contact bridge mechanism, the structural height is effectively reduced while the structural strength and sealing performance are ensured, the product miniaturization is ensured, the silicon rubber filling process is replaced by a sealing gasket, the assembly process is simplified, and the composite connection of the combined nail and rivet further guarantees the mechanical stability and sealing reliability of the overall structure.

The direct current contactor comprises a shell, an electromagnetic system and a contact system arranged in the shell along an axial direction, the electromagnetic system comprises an armature assembly and two coil assemblies, the two coil assemblies are arranged along the axial direction of the shell for driving the armature assembly to move linearly, each coil assembly comprises a coil framework, the contact system comprises a moving contact assembly and a stationary contact assembly, the moving contact assembly is driven by the armature assembly to contact or separate from the stationary contact assembly, the electromagnetic system further comprises a magnetic ring, the magnetic ring is located between the two coil assemblies, a moving core of the armature assembly slides up and down on the middle part of the two coil frameworks and the magnetic ring along the axial direction of the shell, and the inner ring side wall and the outer ring side wall of the magnetic ring are two magnetic poles with opposite magnetism respectively. In the utility model, the moving core is surrounded by the magnetic ring to form a surrounding magnetic loop, the moving core is uniformly stressed and deviation is not caused, local magnetic field density is avoided to be too high, the assembly process is simplified, and automatic assembly can be realized.

The utility model discloses a self -recovery formula over -voltage protection ware special -purpose magnetic latching relay with better stability. Adopted technical scheme includes: base, contact system and electromagnetic system in the base, the electromagnetic system includes framework, the iron core in the framework, the armature of being connected to the both ends of iron core and the magnetic steel spare of being cooperated with armature, the contact system includes setting on the base static contact head support movable contact head support, riveting on static contact head support static contact head, riveting on movable contact head support spring piece and riveting on movable contact head support movable contact head.

The present application relates to a laser speckle reducer and a projection device. The laser speckle reducer comprises: a stator part, a vibration assembly, a first diffuser, a mover part, and a second diffuser; the stator part comprises a substrate; the vibration assembly is disposed on the substrate; the first diffuser is disposed on the substrate; the mover part comprises an elastic assembly, and the elastic assembly is connected to the substrate; the second diffuser is disposed on the elastic assembly, and the second diffuser is arranged opposite to the first diffuser; when the vibration assembly vibrates, the elastic assembly drives the second diffuser to vibrate by means of resonance, and the second diffuser is configured to move relative to the first diffuser. The present application can reduce or eliminate the effect of laser speckle, without the need for an electromagnetic system, thereby reducing the number of components and simplifying the structure.

The application discloses a multiple-input multiple-output antenna decoupling performance prediction method based on deep learning, belongs to the technical field of computer-aided electromagnetic system design and prediction, is used for antenna decoupling performance prediction, and comprises the following steps: determining key size parameters of an antenna to be optimized; performing parameter scanning on the variation range of the key size parameters to obtain full-band S parameter simulation data and form an original data set; the data amount of the original data set is expanded by using an SMOTE algorithm to generate an enhanced data set; an antenna decoupling performance prediction model is constructed and trained, the antenna to be optimized is input, and corresponding full-band S parameter curve final prediction results are output. The application effectively expands high-dimensional data by introducing the SMOTE algorithm, solves the problem that small sample data in the electromagnetic simulation field cannot support deep learning model training, constructs a DNN model to establish a nonlinear mapping of a continuous S parameter curve, and can comprehensively evaluate the S parameters of the antenna, instead of being limited to discrete frequency points.

The application provides an electromagnetic system and a clapper circuit breaker, and belongs to the technical field of electrical equipment. The electromagnetic system comprises a magnetic yoke and an armature. A first side plate, a connecting plate and a second side plate in the magnetic yoke are sequentially connected to form a U-shaped structure, and the side wall of the first side plate and the second side plate away from the connecting plate is a first air gap surface. The armature comprises a body part and two connecting parts, the body part is located on one side of the first air gap surface, the two connecting parts are connected to the first end of the body part, one connecting part is rotationally connected to the outer side of the first side plate, and the other connecting part is rotationally connected to the outer side of the second side plate. When the electromagnetic system is in a released state, the distance between the second air gap surface of the body part and the part close to the first end of the body part tends to zero, and when the armature rotates relative to the magnetic yoke to the second air gap surface and the first air gap surface are attracted, the electromagnetic system is attracted. The two connecting parts are located on both sides of the body part, which can reduce the gap between the connecting part and the body part, thereby reducing the air gap between the armature and the magnetic yoke.

The utility model provides a control module of a contactor, which comprises a control module shell, a static iron core and a coil are arranged in the control module shell, the coil is arranged between a movable iron core and the static iron core, the movable iron core is arranged on a movable iron core supporting piece, the movable iron core supporting piece is connected with the control module shell in a sliding mode, and the static iron core is arranged on the movable iron core supporting piece. The movable iron core supporting piece is provided with a first linkage part, and the first linkage part is detachably connected with the contact support. Through modularized design of the electromagnetic system, the number of parts can be reduced, management is convenient, disassembly and replacement are convenient after the contact breaks down, and cost is saved.

A computer-implemented method of predicting a response of an electromagnetic system to electromagnetic radiation from an illumination configuration. The system includes an aberration element located in the radiation path and an object interacting with the electromagnetic radiation at an object plane on the radiation path, the aberration element causing an aberration of the electromagnetic radiation transmitted along the radiation path described by an aberration function. The method includes various steps.

The utility model provides a permanent magnet type electromagnetic system and a contactor. The permanent magnet type electromagnetic system comprises a static iron core, two coil windings, a movable iron core, a contact supporting piece, a reset piece and a magnetic conduction driving assembly. The two coil windings are arranged on the static iron core, the movable iron core is arranged opposite to the static iron core in the first direction, the contact supporting piece is connected with the movable iron core, and the magnetic conduction driving assembly is connected with the contact supporting piece. A first magnetic field force is generated between the magnetic conduction driving assembly and the static iron core, a second magnetic field force is generated between the movable iron core and the static iron core, and a third magnetic field force is generated between the static iron core and the coil winding. The reset piece is arranged on the side, away from the contact supporting piece, of the magnetic conduction driving assembly and exerts reset force in the direction of the movable iron core on the magnetic conduction driving assembly. The first magnetic field force is the same as the reset direction, the third magnetic field force is opposite to the first magnetic field force, and the second magnetic field force is opposite to the first magnetic field force. The moving stroke of the movable iron core can be effectively improved.

A switching device includes a switch housing and an electromagnetic system including an electromagnetic coil, a static iron core and a moving iron core. The switch housing includes an electromagnetic mounting cavity, in which the electromagnetic system resides, and a contact module mounting cavity, in which a contact module resides. The contact module includes a static contact, a moving contact and an arc-extinguishing chamber in the contact module housing. The moving iron core is connected to the moving contact and drives the moving contact in a straight line. The contact module housing has a first linkage hole through which a linkage member passes to connect the moving iron core with the moving contact. The contact mechanism is encapsulated, and mounted in the switch housing to reduce, the overall height of the switch, and the influence of an arc on the electromagnetic system.

The invention discloses an electromagnetic stopping device capable of achieving backup release and a control method of the electromagnetic stopping device, and belongs to the field of aircraft safety control. The device comprises a shell, a throttle lever, a stop nail, an electromagnet, a button sliding rod with a marble groove, an unlocking button assembly of a marble, and a lever transmission mechanism connected with the electromagnet and the button assembly. In a normal state, the throttle lever is locked / unlocked by controlling the on-off of the electromagnet to drive the lever (in an electromagnetic control mode). When the electromagnetic system fails, the unlocking button is directly pressed, the button sliding rod slides to drive the marble to switch the slot position and push the lever to rotate, and locking is forcibly relieved (in a manual backup unlocking mode). According to the invention, through an independently arranged pure mechanical backup unlocking path, an emergency unlocking capability independent of an electric control system is provided, and is combined with an electromagnetic control path to form dual-redundancy safety protection, so that the method is particularly suitable for control systems with extremely high requirements on safety and reliability, such as an aircraft accelerator.

A suspension actuator integrating electromagnetic, hydropneumatic, and inerter characteristics, and a control method therefor. The actuator comprises a piston rod, a guide rod, a spiral groove sleeve, a stator core, and a straight rod; a controllable damping valve assembly is provided in a piston; the bottom end of the piston rod is connected to the piston; the top end of the guide rod passes through the piston and extends into the interior of the piston rod; a spiral groove is formed in the inner circle surface of the spiral groove sleeve; an electromagnetic coil is embedded in a groove of the stator core; the stator core is fixed to the spiral groove sleeve / piston rod; the outer circle surface of the straight rod is sleeved with a permanent magnet; the straight rod is fixed to the piston rod / spiral groove sleeve; damping holes are machined in the piston in the axial direction; the piston rod, the piston, and the stator core divide the interior of the actuator into an upper cavity, a middle cavity, and a lower cavity. By energizing the electromagnetic coil and the controllable damping valve assembly, the suspension can operate in three modes, namely, a passive mode, a semi-active mode, and an active mode. The suspension actuator of the present invention has electromagnetic, hydropneumatic, and inerter characteristics at the same time, thereby widening suspension control bandwidth, and reducing the energy consumption of the electromagnetic system.

The invention relates to a motor-vehicle body (1) comprising a luggage-compartment lid (2) movably mounted between a closed position, in which the luggage-compartment lid (2) closes a compartment (3) of the body (1), and a secure open position, in which the luggage-compartment lid (2) frees access to the compartment (3), the body (1) further comprising at least one electro-magnetic system (4), comprising at least one electromagnet (5), the electro-magnetic system (4) having a first state in which at least one electromagnet (5) is supplied with an electric current and in which the system (4) is designed to hold the luggage-compartment lid (2) in its secure open position, the system (4) having a second state designed to allow the luggage-compartment lid (2) to move from its secure open position to its closed position. The invention further relates to a method for managing the electro-magnetic system (4).

An electromagnetic system and a switching device, the electromagnetic system comprises a coil assembly, a static core and a moving core, the coil assembly comprises a coil framework and a coil wound outside the coil framework, the static core is fixedly arranged on the coil framework and arranged along the outside of the coil assembly, the moving core slides through the central hole of the coil framework and leaves at least two magnetic gaps between the static core, the moving core is also connected with a linkage, the linkage slides through the central hole, and both ends of the linkage extend to the outside of the both ends of the central hole as driving parts respectively. In the utility model, there are at least two magnetic gaps between the static core and the moving core, the driving force of the moving core is guaranteed, the design that the linkage penetrates the central hole makes that both ends of the linkage can be used for driving the contact system, and the electromagnetic system can drive more contact systems simultaneously.

This invention discloses a shock-resistant relay, relating to the field of relay technology. It includes a base body with an electromagnetic system assembly mounted on its top. In use, the shock-resistant pad isolates the electromagnetic system assembly and the shock-absorbing plate from the base body, absorbing some of the vibration energy. Vibration energy is dissipated through the viscous friction of a liquid magnetorheological fluid. The negative Poisson's ratio honeycomb panel has a negative Poisson's ratio honeycomb structure, with highly elastic silicone rubber filling the honeycomb cells to disperse the impact load transmitted by the base body. Through the tensile effect, it achieves three-dimensional vibration energy absorption. A piezoelectric ceramic sheet converts mechanical vibration into electrical energy to power the excitation coil, achieving "self-harvesting of vibration energy." After the excitation coil is energized, the magnetorheological fluid transforms into a near-solid-state damping layer, improving the shock resistance in complex vibration environments. Dynamic shock absorption is achieved through the switching between liquid and solid states of the magnetorheological fluid.

The utility model relates to the field of low voltage electrical apparatus, concretely relates to a casing structure of switch device, it includes the shell, the shell includes the first space for containing the magnetism component of electromagnetic system for accommodating, the second space for containing the switch module that is driven to close and disconnect under electromagnetic system and the third space for containing the control system that is connected with electromagnetic system at least, first space and second space are along third direction d3 and set side by side, and second space and third space are along first direction d1 and set side by side, and first direction d1 and third direction d3 are perpendicular to each other, the casing structure of switch device, and the internal space division is reasonable compact, is favorable to reduce the overall specification size of switch device.

The invention provides a duplex direct-current contactor which can be used as a high-voltage direct-current contactor, a first contact system and a second contact system of the duplex direct-current contactor form a duplex contact system which corresponds to the high-voltage positive and high-voltage negative of a charging pile and are arranged on the two sides of an electromagnetic system in a mode of sharing the central axis, and the duplex contact system shares one electromagnetic system. Synchronous control of the duplex contact systems is achieved through mechanical linkage and magnetic circuit sharing, a magnetic field generated when a single electromagnetic system is powered on acts on the duplex contact systems on the two sides of the single electromagnetic system, the duplex contact systems are driven to act synchronously at the same time, uneven current caused by response time difference of split independent contactors can be avoided, densification and integration are achieved, and the service life of the split independent contactors is prolonged. The material and manufacturing investment of a set of electromagnetic system is reduced, and the overall manufacturing cost is effectively reduced; moreover, the electro-dynamic repulsive force of the duplex contact system and the electromagnetic attraction force of the electromagnetic system are located on the central axis of the electromagnetic system, the attraction counterforce matching is good, inclination is not easy to generate, and the working reliability and the service life are ensured.

This utility model discloses a miniature circuit breaker that facilitates switching of magnetic systems. It includes a housing with an installation area within it. A helical coil magnetic system, a snap-action magnetic system, or a shunt-excitation auxiliary magnetic system is fixed within the housing via this installation area. Switching of the circuit breaker's electromagnetic system is achieved by replacing the helical coil magnetic system, the snap-action magnetic system, or the shunt-excitation auxiliary magnetic system. Because the installation area is provided within the housing and used to fix the helical coil magnetic system, the snap-action magnetic system, or the shunt-excitation auxiliary magnetic system, the versatility of the housing is enhanced; consequently, the competitiveness of circuit breakers using this housing is improved.

This invention discloses a high-magnetic-efficiency miniature circuit breaker snap-action electromagnetic system, comprising a magnetic yoke and an armature mounted above the yoke; the armature includes a pivot pin portion and a magnetic focusing portion, and the magnetic focusing portion is further provided with a recessed portion; wherein, the recessed portion is recessed towards the magnetic yoke. In summary, without reducing the amount of magnetization of the stationary contact rod by the magnetic yoke, the recessed portion is located within the normal working air gap path of the armature, reducing the distance to the current-carrying conductor, resulting in a larger and more concentrated electromagnetic force within the working air gap, and a larger magnetic surface area. This achieves sufficient attraction force at low currents (such as 32A and below), sensitive operation, and minimal magnetic leakage, while also accommodating high current conditions.

Disclosed and described herein are systems, methods and device for drone-based multi-physics measurement and acquisition wherein a drone flies above samples to rapidly acquire a large volume of data (standard photos, multispectral images, acoustic reflection data, and electromagnetic reflection data, among others). By integrating data acquired by the conventional camera, multispectral camera, acoustic / electromagnetic systems, and other sensor systems, accurate information on lithology, composition, elastic properties, and the like of the samples can be obtained without the need for time-consuming manual analysis.

This utility model relates to the field of low-voltage electrical appliances, specifically to a switching device. Its switching unit includes at least two sets of switching modules arranged side-by-side along a second direction d2. Each switching module includes a moving contact mechanism and a stationary contact group. The first and second stationary contacts of the stationary contact group are arranged side-by-side along a third direction d3. Each moving contact mechanism is movable as a whole along a first direction d1. Its electromagnetic system includes a magnetizing component and an armature arranged sequentially with the switching unit along the third direction d3. The magnetizing component includes a yoke and a coil assembly. The armature drives each moving contact mechanism to move as a whole, thereby closing and opening with the corresponding stationary contact group. The first direction d1, the second direction d2, and the third direction d3 are perpendicular to each other. The switching device has a reasonable layout and compact structure.

The switch electric appliance comprises a shell, a contact support, a counterforce spring, a contact system and two electromagnetic systems, the two electromagnetic systems are oppositely arranged on two sides of the contact system, the two electromagnetic systems each comprise an upper armature and a coil for driving the upper armature to move, the upper armatures of the two electromagnetic systems are connected through a linkage shaft, the top side of the contact support is provided with a linkage groove, the linkage shaft is installed in the linkage groove, the two electromagnetic systems drive the contact support to move linearly against the action force of the counterforce spring through the linkage shaft, the contact support drives the moving contact to contact the static contact, and the contact support drives the moving contact to separate from the static contact under the action of the counterforce spring. The switch electric appliance has the advantages that the two electromagnetic systems are oppositely arranged on the two sides of the contact system, the height of the switch electric appliance is reduced, the contact support is connected with the two electromagnetic systems through the linkage groove arranged on the top side for accommodating the linkage shaft, the height space is not additionally occupied, and the contact support is convenient to disassemble and assemble.