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75results about How to "Achieve symmetry" patented technology
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Four-phase and double-salient brushless direct current motor with symmetrical phase inductances
ActiveCN103187846AReduce torque rippleSmall positioning torqueMagnetic circuit rotating partsMagnetic circuit stationary partsFault toleranceStator coil
The invention discloses a four-phase and double-salient brushless direct current motor with symmetrical phase inductances. According to the four-phase and double-salient brushless direct current motor, a unit motor is of a novel 12 / 9 salient structure or a novel 12 / 15 salient structure, each excitation element is wound after spanning three stator poles, each stator coil of each phase stator winding is distributed at different positions, and the symmetry of the phase inductances is achieved by a mode of symmetrically distributing the four phase stator windings; the pole-arc coefficient matching size of motor stators and rotors is determined by theoretical analysis and emulation verification methods, so that the phase inductances of the motor are hoisted and decreased by an electrical angle of 180 degrees, the total permeance of exciting windings remain basically unchanged, the positioning torque of the motor is small, and the four phases are electrified at the same time to operate. In addition, the four phase stator windings are independent in pairs, so that the motor can operate by only using the two phases after one phase is in fault, and the fault tolerance performance is favorable. Moreover, the total permeance of the exciting windings is unchangeable, so that the four-phase and double-salient brushless direct current motor has the advantages of small positioning torque and the like.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Stress relief in fibre optic arrays
InactiveUS7058275B2Increased stress effectMinimize degradationCoupling light guidesFibre mechanical structuresConfocalPolarization-maintaining optical fiber
A mechanism for achieving symmetrical stress loads on operating optical fibers (16) held in fiber optic arrays includes, in one embodiment, the provision of a pair of non-operating or dummy fibers(26), each located outboard of the outermost or curb fibers(16″) of the array. All of the fibers, whether operating or dummy, are held in corresponding grooves (18, 24) in a substrate (12). A cover plate (14) may be positioned thereover while a low stress glue or potting compound (22) is introduced or applied so as to completely encapsulate the fibers. The glue or potting compound will symmetrically surround all of the operating fibers whereby not only any inboard operating fibers (16′), but also the outboard operating curb fibers (16″), are symmetrically encapsulated. In this manner all of the operating fibers are subject to the same stresses and consequently will exhibit essentially the same polarization maintaining behavior. The invention is primarily beneficial with polarization-maintaining optical fibers, but will work effectively with other types of optical fibers as well, wherever stress are a concern.
Owner:OZ OPTICS
Data chain information circulation control system based on block chain as well as method
ActiveCN109450856AGuaranteed credibilityIncrease flexibilityKey distribution for secure communicationEncryption apparatus with shift registers/memoriesTamper resistanceControl system
The invention belongs to the technical field of transmission control procedures such as a data chain stage control procedure and discloses a data chain information circulation control system based ona block chain as well as a method. The system disclosed by the invention is based on a weighted PBFT algorithm, can distribute weights specific to different entity characters of a data chain, fully considers significance of different characters of the data chain as well as influence of the different characters on consistency and has high flexibility; based on an access control scheme of the blockchain, consistency and tampering resistance of the block chain guarantee credibility of a contract self, a smart contract can be automatically executed, characteristics of the block chain are combined, and credibility of an access strategy output by the contract is guaranteed, so that data security is effectively guaranteed; and attribute encryption is combined with symmetrical encryption, data isencrypted by using a symmetrical encryption scheme, and a symmetric key is encrypted by using an attribute encryption algorithm, so that efficient encryption is guaranteed, and flexible access control is supported.
Owner:XIDIAN UNIV
Credit island service platform-based enterprise financing service system and method
InactiveCN101777168AAchieve symmetrySolve the problem of lack of creditFinanceNetworks interconnectionService systemSoftware tool
The invention provides a credit island service platform-based enterprise financing service system and a credit island service platform-based enterprise financing service method. A virtual acquaintance society community is established through the Internet, and various financial institutions engaging in small and medium enterprise financing service and small and medium enterprises with the financing requirement are integrated in the same environment, and can share information through various software tools to improve familiarity and solve the information symmetry problem, so that the business behaviors of each enterprise can be monitored by various external main bodies (including the financial institutions and other enterprises). The system and the method aim to establish a credit environment and implement a credit reward and dishonesty disciplinary mechanism, so that the financial institutions can implement the small and medium enterprise financing service in a low-risk and low-cost environment.
Owner:苏州德融嘉信信用管理技术股份有限公司
Optical fiber gyroscope with optical fiber ring adopting double-ring design
ActiveCN105021180AAchieve symmetryAddressing Temperature DriftSagnac effect gyrometersPhotovoltaic detectorsGyroscope
The invention discloses an optical fiber gyroscope with an optical fiber ring adopting a double-ring design. The optical fiber gyroscope comprises a light source, a photoelectric detector, an optical fiber coupling device, a signal processor, an optical modulator and an interference part, wherein the interference part comprises two optical fiber rings and a heat insulation device; the heat insulation device comprises an inner cavity and an outer cavity; a hard insulating ring is mounted between the inner cavity and the outer cavity; a heat guide groove is mounted in the inner cavity; the two optical fiber rings are symmetrically mounted on the two sides of the heat guide groove; a small hole is formed in the heat guide groove; corresponding ends of the two optical fiber rings are spliced and a splicing point is located in the small hole of the heat guide groove; leading-out ends of the two optical fiber rings are led out from other small holes of the heat guide groove and penetrate through the inner cavity and the outer cavity respectively; the leading-out end of one optical fiber ring is connected with a first output end of the optical modulator and the leading-out end of the other optical fiber ring is connected with a second output end of the optical modulator; and the small holes on the heat guide groove are sealed, and the inner cavity and the outer cavity are sealed. The optical fiber gyroscope has the advantages of high temperature stability.
Owner:HARBIN ENG UNIV
High-power all solid-state axisymmetric polarization laser for laser machining
InactiveCN102623884AHas axisymmetric polarization propertiesIncrease powerOptical resonator shape and constructionActive medium materialAll solid stateAudio power amplifier
The invention discloses a high-power all solid-state axisymmetric polarization laser for laser machining. The laser comprises an all solid-state laser generation device. The all solid-state laser generation device comprises a main oscillator for generating a laser beam and a power amplifier for amplifying the output power of the main oscillator, wherein the main oscillator comprises a completely reflecting mirror and an all solid-state single crystal pumping module, which are arranged along the same optical axis; and a polarized light focusing surface is formed between the completely reflecting mirror and the all solid-state single crystal pumping module. The laser also comprises a polarization element which is arranged at a joint of the optical axis between the completely reflecting mirror and the all solid-state single crystal pumping module and the polarized light focusing surface. By the laser, laser in an axisymmetric polarization state can be output, so that the efficiency and accuracy of the laser machining are improved.
Owner:BEIJING TECHNOLOGY AND BUSINESS UNIVERSITY
Method and apparatus for implementing symmetry of channel in broadband orthogonal frequency division multiplexing system
ActiveCN1972257AAchieve symmetryMulti-frequency code systemsTransmitter/receiver shaping networksInformation transmissionCarrier signal
This invention discloses one method to realize signal channel symmetric property based on wide band division, which comprises the following steps: communication point gets information transmission distribution molecule load wave channel estimation in receiving information; according to the values and through plug value computation point using sub load wave signal estimation value; computing signal channel estimation values for information send process.
Owner:SHANGHAI ULTIMATE POWER COMM TECH
Traction transformer series-connected in one box by two low voltage winding layers for AT (Auto-Transformer) power supply
InactiveCN101964246ASimple designSimple structureTransformers/inductances coils/windings/connectionsTransformers/inductances magnetic coresSingle phaseTraction transformer
The invention discloses a traction transformer series-connected in one box by two low voltage winding layers for AT (Auto-Transformer) power supply, relating to traction transformers. The ordinary traction transformer for AT power supply comprises a T single phase traction transformer and an M single phase traction transformer, the two transformers are necessarily and independently designed, the structure is complex, the manufacturing difficulty is big, and design requirements are difficultly satisfied. The traction transformer is characterized in that a core limb group comprises four core limbs, and three winding layers are sleeved on the core limbs from inside to outside; the first winding layers of the first core limb and the third core limb are power supply side windings, and the second winding layer is a feed side winding; the first winding layers of the second core limb and the fourth core limb are the feed side windings, and the second winding layer is a power supply side winding; and the power supply side windings on the first core limb and the second core limb and the power supply side windings on the third core limb and the fourth core limb are respectively connected in series. In the invention, because the T single phase traction transformer and the M single phase traction transformer are uniformly designed into the traction transformer, the structure is simple, the design requirement is satisfied, and the design cost and the production cost are reduced.
Owner:WOLONG ELECTRIC GRP CO LTD +1
Waveguide assembly and near-to-eye display device
The invention provides a waveguide assembly and a near-to-eye display device using the waveguide assembly. The waveguide assembly comprises a first exit pupil extension waveguide structure 710 and a second exit pupil extension waveguide structure 720, wherein the contact face 730 of the first exit pupil extension waveguide structure 710 and the second exit pupil extension waveguide structure 720 is tilted with respect tothe xz plane of a coordinate system xyz;the first exit pupil extension waveguide structure 710 comprises a plurality of first optical thin film layers, one ends of the first optical thin film layers all extend to the contact surface 730, so that the lengths of the first optical thin film layers sequentially increase along a light beam in the transmission direction of the first exit pupil extension waveguide structure 710, and thus the light beam can be effectively reflected through the first optical thin film layers into the second exit pupil extension waveguide structure so as to reduce stray light in the waveguide assembly.
Owner:HUAWEI TECH CO LTD
Vacuum enhancing system or non-evaporable getter
InactiveUS20120251336A1Avoid the needSufficient massSolar heating energyPump componentsPrismEngineering
Vacuum enhancing system or non-evaporable getter of the type used en solar-receptor vacuum tubes which comprises a series of non-evaporable getter material pads the geometry of which is that of a prism with rounded corners and said pads are drilled through the centre thereof and linked by means of a cable ending in a quick-fit closure that allows the fitting thereof to be automated. This system is placed downstream of the expansion-compensating device in the form of non-radial bellows in the longitudinal direction and in the void defined by the vessel that is the interface part between the absorber tube and the expansion-compensating device. A getter system is placed in a radial arrangement, at each of the two ends of the receptor tube, resulting in a receptor tube of completely symmetrical geometry.
Owner:ABENGOA SOLAR NEW TECH SA
Credit island service platform and corporate finance service system based on the same
The invention provides a credit island service platform. Individuals related to the credit investigation are integrated into one environment through establishing a virtual acquaintance social community on Internet, and information can be shared between the individuals through various software tools for improving the familiar degree and solving the information symmetry problem, so each individual can be placed under the supervision of various external subjects, and the invention aims to establish a credit environment for implementing the credit reward and discredit reprimand mechanism. The invention has the advantage that the problem of credit lack is fundamentally solved. On the basis of the advantage, the invention also provides a corporate finance service system based on the credit island service platform, which can also solve the problem of corporate credit lack for financial institutions.
Owner:苏州德融嘉信信用管理技术股份有限公司
Supporting device for integrated cooker smoke exhaust pipe and installation method thereof
PendingCN110260050AGuaranteed structural strengthGuarantee structurePipe supportsDomestic stoves or rangesPulp and paper industryExhaust pipe
The invention discloses a supporting device for an integrated cooker smoke exhaust pipe. The supporting device comprises a support, a connecting vertical rod, a connecting block and a connecting cross rod. Positioning mechanisms are arranged on the left side and right side of the support correspondingly. The connecting vertical rod is vertically arranged on the support. The connecting cross rod is transversely arranged on the connecting block. A supporting assembly is arranged on the connecting cross rod. An installation method comprises the following steps of (1) installing the positioning mechanisms and the support; (2) installing an upper abutting plate and a lower abutting plate; (3) splicing the connecting vertical rod and the connecting block; (4) installing the connecting cross rod and the supporting assembly; and (5) installing an exhaust pipe and the supporting device. The exhaust pipe is supported and positioned through the supporting device, so that vibration in the exhaust process of the exhaust pipe is reduced, the smoke exhaust effect of the smoke exhaust pipe is guaranteed, and meanwhile, the deformation rate of the exhaust pipe can be alleviated, the sealing performance of a connection opening of the exhaust pipe is ensured, excessive vibration in the smoke exhaust process of the exhaust pipe is avoided, friction with surfaces like a wall body and a cabinet body is avoided, and the service life of the exhaust pipe is effectively prolonged.
Owner:浙江蓝炬星电器有限公司
Multi-layer record carrier and method of manufacturing thereof and recording thereon, with reduced transmission differences in the upper layer
InactiveUS7215634B2Increase system complexityInformation be reducedTelevision system detailsMechanical record carriersInformation layerTransmittance
A multi-layer record carrier and method of manufacturing thereof and recording thereon, includes data written in units of blocks on tracks of at least two information layers. A first guard field is written at the start of a data block and a second guard field is written at the end of the data block. The power in the focused spot in the deepest of the at least two information layers is maintained substantially at an optimal value, by setting the length of the first and second guard fields such that the end position of the second guard field of a preceding data block is located within the area of the first guard field of the succeeding data block. Thereby, gap portions between the first and second guard fields can be prevented. Alternatively, the length of the first and second guard fields is set to be approximately equal to the sum of half the diameter of a recording beam in the upper one of the at least two information layers when focused on the lowest one of the at least two information layers and a maximum allowed misalignment between the two layers. Thereby, the area through which the beam passes in the information layer is of a uniform nature, when user data is being read or written. The at least two information layers are aligned by optically measuring and aligning alignment marks, such as header spokes, at predetermined measuring points.
Owner:KONINKLIJKE PHILIPS ELECTRONICS NV
Symmetrical capacitor pressure sensor and manufacture method thereof
InactiveCN102967394AImprove performanceImprove sealingPrecision positioning equipmentDecorative surface effectsCapacitive pressure sensorEngineering
The invention relates to a symmetrical capacitor pressure sensor in the field of microelectronic machinery. The symmetrical capacitor pressure sensor is manufactured by means of a micro electro mechanical system (MEMS) bulk silicon process and characterized by comprising a substrate (6) made of a silicon wafer. A detection capacitance cavity (3) and a reference capacitance cavity (4) which are fully symmetrical are arranged on two faces of the substrate (6) respectively, the back face of the substrate (6) is in bonded connection with a silicon covering plate (5), the front face of the substrate (6) is in bonded connection with a pressure sensitive film (1) made of a silicon-on-insulator (SOI) silicon wafer, and an electrode (7) is arranged on the substrate on one side of the pressure sensitive film (1).
Owner:EAST CHINA INST OF OPTOELECTRONICS INTEGRATEDDEVICE
Control method for asymmetric electric-hydraulic proportional system based on model transferring
ActiveCN104847715AUnanimous responseTroubleshoot consistent responsesFluid-pressure actuator testingServomotor componentsLinear regionMathematical model
The invention discloses a control method for an asymmetric electric-hydraulic proportional system based on model transferring. By converting a transfer function, an asymmetric mathematical model of the asymmetric electric-hydraulic proportional system is converted into a symmetric system model, the symmetry of a load flow model is achieved, and when a unified controller is adopted, responses of forward and reverse motions are identical; by means of signal conversion, the load flow model of the asymmetric system is established, and the purposes of transfer function converting and model converting are achieved, and a new established system model serves as a symmetric load flow model. The achieving method comprises the steps that a reference signal symmetrical to a proportional valve is given, after a signal is converted, a new input signal of the proportional valve is obtained, and proportional valve is controlled to work, so that load flows of the asymmetric electric-hydraulic proportional system in a proportional valve linear region in the forward motion and the reverse motion is identical; by means of the method, an asymmetric effect is eliminated by an asymmetric factor of the system through mathematical conversion, and the identical response of the asymmetric electric-hydraulic proportional system is achieved simply and intelligently.
Owner:CENT SOUTH UNIV
Plane grating interferometer displacement measurement system
PendingCN107860318AAchieve symmetrySuppression of polarization aliasing errorsUsing optical meansConverting sensor output opticallyLinear displacementImage resolution
The invention provides a plane grating interferometer displacement measurement system comprising a single frequency laser, a beam splitter, an acousto-optic modulator, a grating interferometer, a plane grating, a receiver, an electronic signal processing part, an optical fiber coupler and a frequency synthesizer. The grating interferometer comprises a polarizing beam splitter, a dioptric element,a retro-reflector and a quarter-wave plate. The measurement system realizes displacement measurement on the basis of grating diffraction, the optical Doppler effect and the principle of optical beat frequency. When the grating interferometer and the plane grating perform two-degree-of-freedom linear relative motion, the system can output two linear displacement. According to the measurement system, sub-nanometer and even higher resolution and accuracy can be realized and two linear displacement can be simultaneously measured; and the measurement system has the advantages of high measurement accuracy and simple structure and acts as the photoetching machine ultra-precision workpiece table position measurement system to enhance the integrated performance of the workpiece table.
Owner:TSINGHUA UNIV +1
Human cranlofacial 3-D measurer and measuring method
InactiveCN1742676AEliminate edemaEliminates the effects of bruisesSurgeryDiagnostic recording/measuringThree dimensional measurementCraniofacial
The present invention relates to human craniofacial three-dimensional measuring equipment. Said measuring equipment has a three-dimensinal coordinate measuring scale which is formed from the components of vertical measuring rule, horizontal measuring rule and parallel measuring rule which is mutually perpendicular to the vertical measuring rule and horizontal measuring rule. Said invention also provides its three-dimensional measuring method and concrete steps.
Owner:SICHUAN UNIV
Automobile plate spring guide arm
InactiveCN105620217ASolve the design heightAddress design spaceResilient suspensionsAir springEngineering
The invention provides an automobile plate spring guide arm. A curled lug is arranged upwards at one end of a flat and straight plate spring. The automobile plate spring guide arm is characterized in that a Z-shaped plate spring is arranged downwards at the other end of the flat and straight plate spring and side edges are bent from the bottom edge to the side faces of the Z-shaped plate spring; the side edges are arranged on the two sides of the bottom edge of the Z-shaped plate spring; a supporting arm and the flat and straight plate spring are perpendicular to the bottom edge of the Z-shaped plate spring; and the included angle formed by each side edge and the bottom edge of the Z-shaped plate spring ranges from 30 degrees to 50 degrees and the distance between an air bag installation center position on each side edge and the center of the supporting arm is not larger than 120 mm. By the adoption of the automobile plate spring guide arm, the beneficial effects of the flat and straight plate spring and Z-shaped and side bent type plate spring guide arms are combined, the problems existing in air spring design height and transverse arrangement space are well solved, the mechanical characteristic of a spring steel material is brought into full play, a composite air suspension structure is simplified, and the requirement for the low weight of a whole automobile is met; and the composite air suspension structure is better optimized, the number of parts is reduced, and the requirement for the low weight design of the whole automobile is met.
Owner:东风汽车悬架弹簧有限公司
Three-dimensional technology based factory design method
InactiveCN107895065AAchieve symmetryAvoid symmetryGeometric CADDesign optimisation/simulationDesign softwareDimensional modeling
The invention relates to a three-dimensional technology based factory design method. The method comprises the steps that three-dimensional model preliminary design is conducted in Smart3D, and processmodel layout is completed; electrical equipment and shared equipment three-dimensional model design is completed in the Smart3D, and meanwhile collision check is conducted, and a model file is outputto structural design to provide information; structural design is completed in SAP2000; a three-dimensional model file completed by SAP 2000 is imported into the Smart3D to conduct collision check, and whether a structural model meets the design requirements or not is judged; deep design is completed in steel structure deep design software; a model obtained after deep design is imported into theSmart3D, and whether the deep design model meets the requirement or not is checked; if yes, a steel structure deep drawing is delivered for manufacturing; final stage design is conducted in the Smart3D, all model building is completed, and a two-dimensional drawing is generated and delivered for site construction. Accordingly, the factory design efficiency and the steel structure processing precision can be improved.
Owner:CBMI CONSTR
Method for providing two-way optical timed channel on optical transport network (OTN)
InactiveCN106162382AAchieve symmetryTransparencyMultiplex system selection arrangementsMultiplexingAudio power amplifier
The invention provides a method for realizing timed distribution in an optical transport network (OTN). The method comprises the following steps of: on the basis of the wavelength of an optical supervisory channel (OSC) used in the OTN, configuring a two-way communication channel on an optical fibre, wherein optical signals having a first wavelength and a second wavelength respectively adjacent to the central wavelength of the OSC are configured on each optical fibre, so that data is transmitted in two directions; performing OSC duplex communication in a first two-way communication channel at the position of an optical switching / multiplexing node, and performing optical timed channel (OTC) duplex communication in a second two-way communication channel; and regenerating signals in the OTC through a line amplifier (ILA), so that timed signals in the OTC are transparently transmitted.
Owner:ALCATEL LUCENT SAS
Air swinging mechanism of air conditioner and air conditioner
ActiveCN108759051AEnsure consistencyAchieve symmetryAir-flow control membersControl theoryEngineering
The invention discloses an air swinging mechanism of an air conditioner and the air conditioner, and belongs to the technical field of air conditioners. The air swinging mechanism comprises swinging blades, a connecting rod and a motor, wherein the connecting rod comprises a first connecting rod and a second connecting rod; the swinging blades, the first connecting rod, the second connecting rod and the motor are sequentially connected; a hinge point where the swing blades are connected to a housing at an air outlet of the air conditioner is treated as a first hinge point; a hinge point wherethe swinging blade is connected to the first connecting rod is treated as a second hinge point; a hinge point where one end of the first connecting rod is connected to the first end of the second connecting rod is treated as a third hinge point; a hinge point where the second end of the second connecting rod is connected to an output shaft of the motor is treated as a fourth hinge point; the distance from the first hinge point to the second hinge point is equal to the distance from the third hinge point to the fourth hinge point; and the distance from the first hinge point to the fourth hingepoint is equal to the distance from the second hinge point to the third hinge point. The air swinging mechanism solves the problem of asymmetric angles of the swinging blades leftward and right rotating in the air conditioner.
Owner:QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD +1
AR-based marketing cloud service platform, AR intelligent equipment, system and method
PendingCN111461806AReach the final consumer demandQuick response to demandBuying/selling/leasing transactionsPersonalizationData aggregator
The invention discloses an AR-based marketing cloud service platform, AR intelligent equipment, an AR intelligent system and an AR intelligent method. The AR-based marketing cloud service platform comprises an AR interaction module, a data linkage module, a data analysis module and a data aggregation module. The AR interaction module performs AR interaction with a consumer through AR intelligent equipment to obtain consumer data; the data linkage module is used for realizing data sharing by coordinating data of consumers, merchants and manufacturers, so that intelligent linkage is carried outamong marketing links, and personalized consumer data is provided; the data analysis module carries out customer analysis insight based on data analysis and carries out personalized information recommendation on consumers; and the data aggregation module performs marketing data integration. According to the AR marketing scheme based on the AR technology, marketing information flow is converted into C2B from B2C, the future marketing development trend is met, and by means of the AR technology, merchants can conduct flexible production and personalized customization according to the real requirements of consumers.
Owner:SHENZHEN AUGMENTED REALITY TECH CO LTD
Wheel type rotor engine
InactiveCN1724856ABurn fullyVariation of ignition timeInternal combustion piston enginesRotary piston enginesLow noiseInlet valve
The invention relates to an internal combustion engine, concretely relating to a rotating internal combustion engine. A wheel rotor engine is provided with stator and rotor, there is rotating plate in a rotating plate groove on the rotor, the rotating plate is rotationally connected with the rotor, there is a cavity between the rotor and the stator, and air inlet is communicated with the cavity by air inlet valve, and there is a variable volume combustion chamber in the cavity. The invention is not only simple structure but also beneficial to realizing the optimum effects of low noise, low exhaustion, and low smoke.
Owner:杨长江
Symmetrical mandrel-type optical-fiber hydrophone probe of temperature drift resistance
InactiveCN107677357AImprove reliabilityImprove measurement accuracySubsonic/sonic/ultrasonic wave measurementUsing wave/particle radiation meansFiberHydrophone
The invention relates to a symmetrical mandrel-type optical-fiber hydrophone probe of temperature drift resistance. The hydrophone probe comprises a sensitive portion end cap, a sensitive portion skeleton, a sensitive thin wall, a sensitive optical fiber, a sensibilization coating, a reference portion skeleton, a reference optical fiber, a reference portion sleeve, a reference portion end cap, anoptical-fiber water-tight joint, a fastening bolt, a first sealing ring and a second sealing ring. The reference portion skeleton and the sensitive thin wall have a same characteristic size and are symmetrical along an axial direction. When an environment temperature changes, length variable quantities of the reference optical fiber winding the reference portion skeleton and the sensitive opticalfiber winding the sensitive thin wall are equal so that a phase difference of the two is ensured to be constant. Compared with the prior art, by using an optical-fiber hydrophone of the invention, a defect that a demodulation signal is easy to be influenced by environment temperature changes is overcome, and reliability and measurement accuracy of the optical-fiber hydrophone are increased.
Owner:BEIJING INST OF AEROSPACE CONTROL DEVICES
Clothes supporting device and fast clothes dryer with the clothes supporting device
ActiveCN107881737ALow costFirmly connectedOther drying apparatusTextiles and paperPulp and paper industry
Owner:QINGDAO JIAONAN HAIER WASHING MACHINE +1
Automatic coating structure for brake pad
The invention discloses an automatic coating structure for brake pads, which includes a conveyor belt transmission mechanism, a conveyor belt tension mechanism, and a constant speed reciprocating coating mechanism. The conveyor belt transmission mechanism includes a frame, a conveyor driven sprocket, a conveyor belt drive Sprocket, gear motor, the gear motor is set on the frame, the gear motor is connected with the driving sprocket of the conveyor belt; the conveying driven sprocket is connected with the sliding bearing seat; It is connected by a conveying chain; the conveyor belt tensioning mechanism includes a lower seat, a sliding bearing seat, an upper sliding seat, and a short-range cylinder tightening rod, and the sliding bearing seat is set on the lower seat and the upper sliding seat; the short-range air cylinder is set on the frame; The ejector rod of the short-range cylinder is connected with a top rod; the constant speed reciprocating coating mechanism includes a nozzle bracket, a rodless cylinder, and a nozzle, and the rodless cylinder is set on the frame; the nozzle bracket is connected to the rodless cylinder; on the stand. The invention has the advantages of simple structure, convenient operation and high production efficiency.
Owner:胡国纲
A biorthogonal wavelet construction method and application based on Bernstein group
InactiveCN101217666ARealize the structureAchieve symmetryImage codingTelevision systemsLow-pass filterBiorthogonal wavelet
The invention discloses a construction method of biorthogonal wavelet, which is based on Bernstein base and comprises the following steps that: (1) a lowpass filter at a discomposing and reconstructing end is expressed by Bernstein base; (2) numerical calculation of the lowpass filter is carried out; (3) the lowpass filter at the discomposing and reconstructing end is led to meet the conditions to reconstruct the lowpass filter entirely; (4) the parameter of obtained biorthogonal wavelet is calculated. In addition, the invention also provides a method to realize image compression based on the biorthogonal wavelet. Construction of the filter containing parameter that is provided with symmetric odd number length is realized by adopting the invention, thus providing a new way to construct transformation suitable for high-magnification compression of static image.
Owner:BEIHANG UNIV
Manufacturing method of TFT substrate and manufactured TFT substrate
ActiveCN105742294AAchieve symmetrySymmetry hasTransistorSolid-state devicesEngineeringElectrical and Electronics engineering
Owner:TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
Supersoft wet pressure-change resin and preparation method and application thereof
InactiveCN109762323AImprove high temperature resistanceAppearance is clear and transparentSolubilityPolyester
The invention relates to the technical field of chemical products and preparation methods thereof, and discloses supersoft wet pressure-change resin and a preparation method and application thereof. The supersoft wet pressure-change resin is prepared from the following raw materials in kilogram by weight: 50 kg of PE-1, 50 kg of PE-2, 100 kg of PE-3, 25 kg of PCDL-2000, and 697 kg of DMF (DMF is delivered for two times, 300 kg of DMF is delivered for the first time, and 397 kg of DMF is gradually delivered for the second time). According to the supersoft wet pressure-change resin and the preparation method and application thereof, by selecting and matching the proper proportion of polycarbonate, the high-temperature resistance of the resin can be greatly improved, scorching of the surfaceof synthetic leather can be prevented while the pressure change effect is achieved, by selecting polyester with different molecular weight for mixing and matching, the symmetry of a polyurethane molecular structure is lowered, better solubility is achieved compared with products made of polyester with the single molecular weight, the low-temperature resistance is good, the resin appearance is moreclear and transparent, and ethylene glycol is selected during chain extender selecting to be matched with the appropriate amount of other long-chain chain extenders.
Owner:华大化学(安徽)有限公司
A Control Method of Asymmetric Electro-hydraulic Proportional System Based on Model Transformation
ActiveCN104847715BUnanimous responseTroubleshoot consistent responsesFluid-pressure actuator testingServomotor componentsLinear regionMathematical model
Owner:CENT SOUTH UNIV
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