123results about How to "Improve coupling" patented technology

An integrated transformer structure includes a first coil element associated with a transverse axis, the first coil element having at least one turn. The first coil element includes a first portion provided on a first lateral level, and a second portion provided on a second lateral level. The first and second lateral levels being mutually spaced apart along said transverse axis. The first and second portions being displaced laterally from said axis by different respective distances. At least one crossover portion of the first coil element, in which the first coil element being configured to provide a conducting path through at least a portion of the first portion of the first coil element to the crossover portion, through the crossover portion and subsequently through at least a portion of the second portion of the first coil element, in which any change of flow direction along said path is less than 90° in a lateral direction.

A lens member (55) is made to adhere to a lead frame (36) via a transparent adhesive resin (41) and is not transfer molded with a sealing body (37). With this arrangement, the transparent adhesive resin (41) can be used as a member for buffering a thermal stress due to a linear expansion coefficient difference between the lead frame (36) and the lens member (55). By using a resin of a low Young's modulus such as a silicon based resin, the damage and deformation of the lens member (55) can be prevented by largely reducing the thermal stress exerted on the lens member (55). Furthermore, the linear expansion coefficient can be reduced by adding filler to the sealing body (37), and the optical coupler can be used under an environment of a wide temperature range of, for example, −40° C. to 115° C.

The invention discloses an electromagnetic resonance type wireless charging device and a control method based on CLL resonant transformation. The control method comprises the steps that a DC-bus voltage is acquired by a microcontroller, and the microcontroller controls the duty ratio of an MOS tube of a two-way AC / DC rectifier module, so that the stability of the input DC-bus voltage is achieved; through controlling the switching of the MOS tube of a CLL resonant conversion module, the microcontroller can inverts a direct current into an alternating current; a coupling resonance coil of a transmitting terminal sends out contravariant energy of the CLL resonant conversion module and transmits to a coupling resonance coil of a receiving terminal; after a high-frequency alternating current is received by the coupling resonance coil of the receiving terminal, rectification is conducted by an AC / DC rectifier module of the receiving terminal, stable voltage smoothing is conducted, and the coupling resonance coil of the receiving terminal conducts charging on a storage battery; a terminal voltage and a charging current of the storage battery are acquired by the microcontroller, and the duty ratio of the MOS tube of the CLL resonant conversion module is controlled by the microcontroller, so that the set charging current and the over-charge protection function are achieved. The electromagnetic resonance type wireless charging device and the control method based on the CLL resonant transformation has the advantages that working under the switching of zero voltage and zero current is achieved, the switching loss is effectively reduced, the energy transmitting efficiency is improved, and the volume of a wireless transmission device is reduced.

A test system includes a test socket assembly for capturing low energy electromagnetic emissions from radio frequency (RF) integrated circuits (ICs). The test socket assembly is structured to direct electromagnetic radiation from the device under test (DUT) to a socket port coupled to one end of a waveguide for transmission to a tester. The combination of the materials comprising the socket assembly is selected to more efficiently couple electromagnetic emissions from the DUT into the waveguide. For example, a reflective plane with an adjustable position may be located below the DUT in order to increase coupling of electromagnetic radiation from the DUT into the waveguide.

The invention discloses a distributed index file retrieval method. Including: access to the search string to generate analytical after a search by keywords of expression will be described in keywords and the search request keywords inverted Table Pre-reading of the request sent to the various clusters retrieval server; retrieval server cluster in accordance with the documents referred to key words hit frequency reader referred to the words inverted table; Retrieval server cluster described in the words of the inverted form of a logic operation after output search results. The invention also openly distributed a document indexing and retrieval method in a distributed index file retrieval server. Application of this invention effectively improve the retrieval server clustering within the coupling between Retrieval, an increase of resources between the dynamic server deployment capabilities, through the cluster of multiple servers access the resources of unified planning, the maximum guarantee set concurrent group as a whole and improve the speed .

A method of treating unwanted hair is disclosed. The method comprises: transmitting acoustic waves through the hair so as to generate heat at a follicle, a dermal papilla, a hair bulge and / or a germinal matrix of the hair. The heat itself is sufficient to damage or destroy the follicle, the dermal papilla, the hair bulge and / or the germinal matrix.

Provided are semiconductor integrated circuits including a grating coupler for optical communication and methods of forming the same. The semiconductor integrated circuit includes: a cladding layer disposed on a semiconductor substrate; a grating coupler including an optical waveguide on the cladding layer and a grating on the optical waveguide; and at least one reflector formed in the cladding layer below the grating.

An integrated transformer structure includes a first coil element associated with a transverse axis, the first coil element having at least one turn. The first coil element includes a first portion provided on a first lateral level, and a second portion provided on a second lateral level. The first and second lateral levels being mutually spaced apart along said transverse axis. The first and second portions being displaced laterally from said axis by different respective distances. At least one crossover portion of the first coil element, in which the first coil element being configured to provide a conducting path through at least a portion of the first portion of the first coil element to the crossover portion, through the crossover portion and subsequently through at least a portion of the second portion of the first coil element, in which any change of flow direction along said path is less than 90° in a lateral direction.

The present invention discloses a method and a device for detecting an earphone wearing state and an earphone. The method comprises the steps of: obtaining the type of an environment where an earphoneis located, wherein the type of the environment comprises a noise environment type and a non-noise environment type; when the earphone is in the non-noise environment type, playing preset sound signals by the earphone; obtaining feedforward sound pressure and feedback sound pressure of the earphone to determine a difference of the feedforward sound pressure and the feedback sound pressure, wherein the feedforward sound pressure is sound pressure of sound signals picked up by a feedforward microphone of the earphone, and the feedback sound pressure is sound pressure of the sound signals pickedup by a feedback microphone of the earphone; and according to the comparative result of the difference and a first threshold range corresponding to the type of the environment, determining whether the wearing of the earphone is qualified or not.

An efficient tapered optical fiber bundle along with the method of manufacturing is presented. The tapered fiber bundle is fully fused to an induced shape with no interstitial space between fibers. To minimize fiber deformation and hence the tapered bundle's loss, the individual fibers are minimally deformed by positioning them in a fixture with predetermined geometry prior to fusion. The bundle could be optionally reshaped after fusion. The tapered bundle could then be used in its original form as a star coupler, or it could be cleaved and coupled to a multimode fiber, a multi-clad fiber, a cladding-pumped fiber, or an optical system to form an optical device. The resulting optical device has improved efficiency and lower loss compared with prior art devices.

The invention discloses a wireless electric energy transmission loosen magnetic-coupling transformer device with a large offset fault-tolerance range and a circuit thereof. The device comprises an emission module, a receiving module and a shielding mechanism, wherein the emission module and the receiving module respectively comprises an insulation plate, a strip-shaped magnetic core and a transformer coil, the insulation plate is made of an insulation material, the strip-shaped magnetic coil is fixed by the insulation plate, the transformer coil is formed by winding multiple strands of litz lines in parallel, the coil is wound around an upper surface and a lower surface of the insulation plate to form a spiral structure or are wound around one side to form a single-side staggered structure, and the shielding mechanism has a magnetic leakage shielding effect by a metal plate on a back part of the coil. A primary side and a secondary side of the transformer respectively employ a double-side spiral coil structure and a dual-path staggered coil structure, the dual paths of staggered coils are connected by an external circuit, so that the primary side and the secondary side can achieverelatively high coupling coefficient and relatively high integral efficiency under the condition of relatively large deviation, and the device has relatively small electromagnetic interference and canbe widely an electric vehicle wireless charging system with different power classes.

The invention discloses a double-frame and notched four-bridge bridging microstrip antenna applied to a compass system, and relates to a microstrip patch antenna. The double-frame and notched four-bridge bridging microstrip antenna applied to the compass system is low in return loss, high in gain, small in interference, high in symmetrical characteristic, high in integration density and small in size, has a directed radiation characteristic and is compatible with a compass frequency range satellite positioning system. The double-frame and notched four-bridge bridging microstrip antenna comprises a base plate. Metal layers are coated on the two surfaces of the base plate, wherein one metal layer on one surface is machined to an outer frame and double frames of an internal radiation paster, wherein the outer frame is provided with cut corners, rectangular notches are arranged on the inner edge of the outer frame, and a symmetrical structure of the inner radiation paster and an external radiation paster is formed by a four-bridge bridging manner inside and outside. The other metal layer on the other surface is an earth plate. Further miniaturization of the antenna is achieved, and requirements of a compass satellite communication system can be well met by using of the notched four-bridge bridging microstrip patch antenna structure and applying of a distribution loading technique to a radiation element and through comprehensive optimization of serial technologies.

A method for modeling and simulating an air separation system of an integral gasification combined cycle power plant comprises the following steps: building up an accurate mathematical model of a rectifying tower according to mass balance, energy balance, gas-liquid phase balance, molecular normalization equation and physical property equations set of each tower tray; and carrying out simulation experiment for the air separation system, including the cold-state startup process of the rectifying tower and the operation under variable working conditions, so as to study the dynamic operating characteristics of the rectifying tower, as well as the dynamic, static and coupling relations among the input, the output and the disturbance variables of the system. The method is considerably helpful for further understanding the operating characteristics of the air separation system, setting a control strategy for the air separation system and optimizing the operation. Moreover, the method can bring out profound impacts on the further study of the cooperative control of the air separation oxygen-generating system and other parts of the integral gasification combined cycle power plant, and an integral optimization design for the entire power plant.

The invention discloses a wireless charging method, device and system, relating to the field of application of electronic devices. The problem that the coupling degree is reduced in the wireless charging process can be solved. The wireless charging method comprises the steps of: obtaining coupling characteristic information of an opposite end, wherein the coupling characteristic information is used for representing a coupling degree of receiving and transmitting an electromagnetic wave signal between a local end and the opposite end; and determining the frequency of the local end according to the coupling characteristic information so that the frequency of the local end is optimally matched with that of the opposite end. The wireless charging method, device and system is mainly applied to the process of wirelessly charging electronic devices such as a mobile phone and a computer.

The invention discloses a data transmission optimization method based on linear network coding. The method comprises the steps that 1, data information needing to be transmitted is grouped in a sending source, and the grouped data is coded through a linear network coding technique; 2, the grouped data is forwarded to a relay vehicle to be subjected to a recoding operation and forwarded; 3, if a next-hop vehicle is not a destination vehicle, the step 2 is repeated; 4, when the destination vehicle receives the data, linear correlation calculation is firstly conducted, and if the data does not have the linear correlation, the data is received; 5, a decoding operation is conducted on the received data to obtain original data through recovery, and if decoding cannot be conducted, the condition is fed back to the last-hop vehicle; and 6, if the destination vehicle cannot obtain the original data through decoding, the condition continues to be fed back to the last-hop relay vehicle until the original data is obtained through decoding. According to the method, the packet loss rate generated in the data transmission process can be effectively decreased, and the data retransmission times are decreased.

The invention relates to a power-to-gas conversion technology-based regional integrated energy system online optimization method. The method includes the following steps that: the real-time information of the status of a system is obtained; when an event is triggered, the system will generate triggering signals and notify a power controller to respond to the event; Lyapunov-based based energy online optimization is adopted to obtain the current optimal actual power consumption X(t) of HVAC; and energy scheduling is performed for other units in the system. According to the method of the invention, the controllable load HVAC is adopted as a decision-making subject, so that event-driven energy online optimization can be realized. The method aims to ensure the comfort of a user while minimizing the cost of the user, and at the same time, absorb renewable energy as much as possible, improve an energy utilization rate, and achieve online energy collaborative optimization for a supply side and a demand side. Since the HVAC is adopted as the decision-making subject, and collaborative optimization of the supply side and demand side is realized, the comfort of the user can be ensured, the cost of the user can be minimized, and therefore, a fast scheduling method can be expected to be provided for the energy management of an integrated energy system.

This invention relates to a transformer including a first conductor, a second conductor and an iron core, in which, the second conductor is coupled with the first one magnetically and includes a multi-layer screw coil composed of a conductive wire winding with a through hole at the center, two ends of the wire are extended from the edge of the coil and the core passes through the hole and covers a part of the two conductors.

The invention is applied to the technical field of wireless charging, and discloses a wireless charging and coupling structure and a design method thereof. The wireless charging and coupling structurecomprises a transmitting end and a receiving end which are arranged oppositely, an air gap is formed between the transmitting end and the receiving end, and the receiving end and the transmitting endare arranged coaxially. The transmitting end sequentially comprises a first aluminum plate, a first magnetic core arranged on the first aluminum plate and a first resonant coil arranged on the firstmagnetic core from outside to inside, wherein the first resonant coil is arranged concentrically with the first magnetic core; the receiving end sequentially comprises a second aluminum plate, a second magnetic core arranged on the second aluminum plate and a second resonance coil arranged on the second magnetic core from outside to inside, wherein the second resonance coil is arranged concentrically with the second magnetic core; and the radius of the first magnetic core is larger than the radius of the second magnetic core, and the radius of the second resonance coil is larger than the radius of the second resonance coil. According to the resonant type electric automobile wireless charging and electromagnetic coupling structure, the coupling degree is improved, the magnetic leakage is reduced, the magnetic loss is reduced, the charging efficiency is improved, the volume and the weight of the magnetic cores are reduced, and the anti-migration capability of the system is improved.

The invention provides a low-speed and high-torque motor with a magnetic gear. The low-speed and high-torque motor comprises an inner rotor, an adjustable magnetic ring and a stator which are coaxially and sequentially arranged from inside to outside, wherein a permanent magnet is arranged in the inner rotor; an armature winding for generating a rotating magnetic field and an electromagnet for generating a constant magnetic field are arranged in the stator. By adopting the electromagnet to generate the constant magnetic field in the stator and to replace a permanent magnet in the stator, the usage of the permanent magnet can be reduced, so that the length of an air gap on an outer layer is reduced, and further the coupling degree of an armature winding magnetic field and a permanent magnet magnetic field of the inner rotor is improved.

The invention provides a wireless charging module, a wireless charging table and a wireless charging method. The wireless charging module comprises a control circuit, a detection plate, a wireless charging base and a moving mechanism. The detection plate is arranged corresponding to a desktop; and the detection plate comprises a substrate and a plurality of magnetic sensors. The plurality of magnetic sensors are electrically connected with the control circuit; and the magnetic sensors are used for detecting the position of a device to be charged on a plane. The wireless charging base is used for wirelessly charging the device to be charged. The moving mechanism supports the wireless charging base. The control circuit is used for controlling the moving mechanism to work according to the position, detected by the multiple magnetic sensors, of the device to be charged placed on the plane, so that the moving mechanism drives the wireless charging base to move to the position of the deviceto be charged. According to the scheme, the effectiveness of wireless charging can be improved.

The invention discloses a grid structure optimization method for realizing reliable splitting based on node relevancy. According to the method, aiming at the problem that a splitting strategy is not converged due to the fact that a grouping mode is not remarkable and a splitting range is widely distributed in the current splitting process, the association degree between system nodes is changed byadopting a method of adjusting the number of lines, so that the purpose of reducing a splitting decision space is achieved. According to the invention, generalized characteristic analysis is carried out based on a slow homology theory, and a dominant mode is acquired to construct a modal matrix; a slow homology matrix is acquired through Gauss elimination of principal elements; a node classification criterion is improved, and a node relevancy model is constructed; system stability constraint conditions are comprehensively considered, and a DPSO intelligent optimization algorithm is utilized toobtain an optimization scheme of homology group strong coupling and non-homology group weak connection; the splitting decision space is highly centralized, which ensures that splitting sections underdifferent disturbances can fall into a weak connection area with high probability; internal oscillation of a homology group is avoided; the splitting effectiveness is improved; and the method has important significance in maintaining the safety and stability of a system.

The invention provides a kind of transformer, includes: primary coil, which is made by spiral winding the first flat conductor along the vertical direction, and a gap is available between each circle; secondary coil, which is made by parallel connecting multiple second flat U-shape conductors through connection units, among which, all second conductors can be inserted into the relevant gap of the first conductors respectively, and the magnetic core of primary coil and secondary coil can be accommodated in which. The transformer is especially suitable for the high electricity output under the high frequency condition, and the leak electricity is very minimal, additionally it is of simple structure and easy assembly. A kind of transformer manufacturing method is also provided by this invention.

The invention discloses a multi-frequency paired-pole magnetic field coupling direct-drive doubly-fed motor structure with fractional slot concentrated windings and a pole slot design method. The motor structure comprises a stator composed of a stator core, an aluminum fastener for fixing the stator core and a stator winding, and is characterized in that rotor cores and rotor windings are locatedat two sides of the stator, and the stator and rotor winding coils are wound in an axial space, so that the magnetic conductance of a magnetic path is significantly improved, and the motor diameter isreduced. By using the characteristic that the fractional slot concentrated windings will generate a pair of dominant pole-pair number components, a function of the induction flux linkage and induction voltage of the stator and rotor is constructed by taking the space harmonic magnetic field pole-pair number and slip frequency as independent variables. For different pole slot combinations of the stator and rotor, there is a group of stator and rotor pole slot combinations in which the electromagnetic power transferred by the dominant pole harmonic magnetic field is the highest. The pole slot selection method of the invention improves the power density and power factor, and thus achieves the direct drive / semi-direct drive operation of the motor.

The invention discloses a self-adaptive positioning fingerprint database construction method in a complex indoor signal environment, and belongs to the technical field of indoor positioning. Accordingto an AP laying position and a space structure, a system adopts a one-to-many support vector machine algorithm to perform partition operation on a target region so as to precisely determine a regionrange of signal change. A multivariate Gaussian mixture model based on mutual interference among signals is established by utilizing a coupling relationship among the signals in narrow partitions, sothat the positioning precision reduction caused by signal fluctuation is improved. When the indoor environment changes, the credibility of fingerprint data of each partition can be judged by adoptinga self-adaptive updating algorithm based on the partition multivariate Gaussian mixture model, and model parameters of the partition with large signal fluctuation are updated by adopting a self-adaptive algorithm, so that the coupling degree between the model and the existing environment is improved. Experimental results show that a stable and maintainable indoor signal distribution model can be constructed by utilizing a relatively small amount of sample data, and compared with other algorithms, the positioning precision of the self-adaptive positioning fingerprint database construction method is further improved to a certain extent.

The pulse transformer for a driving an isolated gate double-base transistor in the invention changes layering and grouping coiling into mixing layer coiling, thus strengthening and deepening coupling degree, so that the parameters and functions such as impedance, inductance, coupling degree, waveform and the like of various secondary levels and windings are basically consistent, thus providing identical driving waveform and conditions for a bridge arm which needs to open and close simultaneously in the working process of IGBT, improving the working reliability of IGBT, reducing noise wave and spike, improving efficiency and reducing loss. The adoption of high-temperature lead can satisfy high-standard requirements, and the selection of a can-shaped magnetic core ensures excellent shielding effect and improves performance index of electromagnetic compatibility of the pulse transformer. Summarizing all the advantages, the IGBT driving transformer is an ideal transformer for driving IGBT.

The invention discloses a wireless charger nest, a wireless charging system and a wireless charging method, the wireless charger nest comprises: a machine body, the middle part of which is provided with a parking apron, the middle part of which is provided with a wireless charging module; linear guide rails, which are fixedly installed on the periphery of the machine body and located on the periphery of the parking apron, wherein sliding blocks are connected to the linear guide rails in a sliding mode, and the linear guide rails comprise X-axis guide rails and Y-axis guide rails; and a centering mechanism, which is fixedly installed on the sliding blocks and comprises two X-axis centering rods, wherein the ends of the two X-axis centering rods are fixed to the sliding blocks on the Y-axis guide rails; and two Y-axis centering rods, the end parts of which are fixed on the sliding blocks on the X-axis guide rails. An unmanned aerial vehicle landing on the parking apron is pushed to the middle position of the parking apron to be connected with the wireless charging module arranged in the middle of the parking apron, the coupling degree of the unmanned aerial vehicle and the wireless charging module is improved, and then the energy transmission efficiency is effectively improved.

Rubbery polymers made by anionic polymerization can be coupled with fin halides or silicon halides to improve the characteristics of the rubber for use in some applications, such as fire treads. In cases where the rubbery polymer was synthesized utilizing a polar modifier it is difficult to attain a high level of coupling. This invention is based upon the unexpected finding that coupling efficiency can be significantly improved by conducting the coupling reaction in the presence of a lithium salt of a saturated aliphatic alcohol, such as lithium t-amylate. This invention discloses a process for coupling a living rubbery polymer that comprises reacting the living rubbery polymer with coupling agent selected from the group consisting of tin halides and silicon halides in the presence of a lithium salt of a saturated aliphatic alcohol. The lithium salt of the saturated aliphatic alcohol can be added immediately prior to the coupling reaction or it can be present throughout the polymerization and coupling process. Lithium t-amylate reacts with water to form t-amyl alcohol during steam stripping. Since t-amyl alcohol forms an azeotrope with hexane, it co-distills with hexane and can contaminate recycle feed streams. This problem of recycle stream contamination can be solved by using metal salts of cyclic alcohols that do not co-distill with hexane or form compounds during steam stripping which co-distill with hexane. Thus, the use of metal salts of cyclic alcohols is preferred for this reason and because they are considered to be environmentally safe.

A magnetic memory includes a magnetic memory, including a ferromagnetic underlayer including a magnetic material, a non-magnetic intermediate layer disposed on the underlayer, a ferromagnetic data recording layer formed on the intermediate layer and having a perpendicular magnetic anisotropy, a reference layer connected to the data recording layer across a non-magnetic layer, and first and second magnetization fixed layers disposed in contact with a bottom face of the underlayer. The data recording layer includes a magnetization free region having a reversible magnetization and opposed to the reference layer, a first magnetization fixed region coupled to a first border of the magnetization free layer and having a magnetization fixed in a first direction, and a second magnetization fixed region coupled to a second border of the magnetization free layer and having a magnetization fixed in a second direction opposite to the first direction.