Product
Feature
Quick Research
Generate reliable direction feasibility study reports for your R&D in just a few steps.
Technical Q&A
Discover and master advanced knowledge NOW. Basics, ideas, possibilities, all at once.
Find Solutions
As an expert in R&D theories, this can generate solutions to your technical problems instantly.
Evaluate Feasibility
Analyze your overall solution with one click, know your potential R&D risks in advance.
Monitor Landscape
Get weekly tech updates, stay abreast of the latest tech innovations and key insights.
Patents
Literature
Hiro is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
38results about How to "Offset negative effects" patented technology
Efficacy Topic
Property
Owner
Technical Advancement
Application Domain
Technology Topic
Technology Field Word
Patent Country/Region
Patent Type
Patent Status
Application Year
Inventor
Cascaded GHZ state code based quantum gate construction method of logic quantum bits
The invention discloses a cascaded GHZ state code based quantum gate construction method of logic quantum bits. The method comprises the steps that coded logic quantum bits based on cascaded GHZ statecodes serve as input, each coded logic quantum bit is formed by multiplying N cascaded logic quantum bits represented in the GHZ state, and each logic quantum bit represented in the GHZ state is formed by m physical quantum bits; a quantum bit gate composed of a bit flipping gate, a phase flipping gate and a control NOT gate is constructed, and bit flipping, phase flipping and control NOT operation are carried out on each input coded logic quantum bit; and coded logic quantum bits after different operations are obtained in the output end. Via the method of the invention, operations related tothe cascaded GHZ state code based coded logic quantum bits can be realized, the method is realized via basic logic gates, the method has an anti-interference capability as to certain error models, and negative influence caused by photon loss can be offset to certain extent.
Owner:NANJING UNIV OF POSTS & TELECOMM
Method for suppressing peak-to-average ratio of orthogonal frequency division multiplexing (OFDM) signals
ActiveCN106385394AOffset negative effectsOvercome the disadvantage of large loss of bit error rate performanceMulti-frequency code systemsCommunications systemCyclic prefix
The invention discloses a method for suppressing the peak-to-average ratio of orthogonal frequency division multiplexing (OFDM) signals. The method includes the following steps that: (1) inputted serial data signals are converted into parallel signals at a signal transmitting end, so that a parallel signal sequence can be obtained; (2) the obtained parallel signal sequence is multiplied by a constructed precoding matrix, so that a peak-to-average ratio-suppressed precoded signals can be obtained; (3) a cyclic prefix is added to the precoded signals, companding processing is performed through using a segmented exponential companding function, so that the peak-to-average ratio of the companded signals can be further suppressed; and (4) parallel-to-serial conversion is performed on the companded signal sequence at the signal transmitting end, so that orthogonal frequency division multiplexing (OFDM) transmission signals can be obtained. The method of the invention is low in complexity, can significantly reduce the signal-to-average ratio of the signals without decreasing the bit error rate of the received signals, and can improve the performance of a communication system.
Owner:XIDIAN UNIV
Concrete internal curing agent, preparation method and applications thereof
InactiveCN110746535AOvercome uneven heat transfer and difficult stirringThe preparation process is simple and controllableChemical synthesisPolymer science
The invention discloses a concrete internal curing agent, a preparation method and applications thereof, and belongs to the field of chemical synthesis. The preparation method comprises: 1) dispersingtwo emulsifiers in a dispersion medium at a room temperature to form an oil phase system, adjusting the neutralization degree of an anionic monomer aqueous solution, mixing the neutralized anionic monomer aqueous solution and a nonionic monomer aqueous solution, and adding a cross-linking agent and an initiator to form a water phase system; 2) under the protection of an inert gas, adding the water phase system into the oil phase system, and carrying out a reaction until a gel appears; and 3) taking the gel, washing, and drying to obtain the white powdery concrete internal curing agent. According to the invention, the concrete internal curing agent obtained by the preparation method is moderate in water absorption rate, integrates hydrophilic and alkali-resistant groups, ensures the moisture required by later hydration of cement, and reduces the negative influence on the strength of concrete after water release based on small particle size.
Owner:CHANGAN UNIV
Method and system for correcting print image distortion due to irregular print image space topography
ActiveUS7611216B2Improve readabilityOffset negative effectsTypewritersPower drive mechanismsTopographyDistortion
A method and system are disclosed for ejecting ink drops from a plurality of ink jet nozzles in order to print on an envelope in a mail piece production process. The envelope has been stuffed and is therefore not flat, especially near the edges. Mail piece composition data is obtained and stored for the mail piece, and based upon that composition data a nozzle delay pattern is determined. For each ink jet nozzle, ink is ejected in accordance with the delay pattern so as to contact a point of the envelope's surface at the same time as drops from other ink jet nozzles.
Owner:PITNEY BOWES INC
Purifying and liquefying process for re-injecting oilfield CO2 flooding produced gas
InactiveCN106761659AOffset negative effectsGuaranteed Separation RateFluid removalCo2 floodingCO2 content
The invention relates to the field of exploration and development of petroleum and gas, and provides a technique for purifying, liquefying and re-injecting oilfield CO2 flooding produced gas. According to the technical point, a method of supercharging by a multi-stage compressor and cooling by five-stage heat exchange is adopted, and the purpose of separating and liquefying the produced gas is achieved. The technique comprises the following process steps: supercharging the pretreated oilfield CO2 flooding produced gas by using a multi-stage compressor unit so as to reduce liquefying temperature of gas; and liquefying CO2 in a five-stage heat exchange cooling mode while the produced gas is separated. The technique has the advantages that for the high-CO2-content produced gas, the liquefying temperature of the gas can be reduced gradually along with rising of pressure in a certain range; and under the same pressure, the liquefying temperature of CO2 is higher than that of CH4 and N2. By the technique, while the produced gas is separated, purified and liquefied, injected liquid CO2 can be heated, energy is saved, and engineering cost is reduced.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)
Silicon micro-gyroscope Sigma Delta detection closed-loop control system structure and parameter setting method thereof
ActiveCN109540176AGuaranteed high signal-to-noise ratioGuaranteed testingMeasurement devicesOpen-loop gainLoop control
The invention relates to a silicon micro-gyroscope Sigma Delta detection closed-loop control system structure and a parameter setting method thereof, belonging to the technical field of inertial MEMSsensor closed-loop control. According to the invention, an open-loop loop transfer function of Sigma Delta is established by determining a zero point, a pole and an open-loop gain of a quantization noise transfer function; then pole-zero cancellation is realized by embedding a lead-lag compensator in the Sigma Delta loop and setting the pole of the compensator to be equal to the zero point of a meter module; the pole of the compensator is set to be equal to the real zero point of the open-loop loop transfer function; and other control parameters of the Sigma Delta are determined by a undetermined coefficient method; therefore, the structural design and parameter setting of the silicon micro-gyroscope Sigma Delta detection closed-loop control system are realized. According to the invention,through adding the lead-lag compensator to the loop structure and the method of pole-zero cancellation, the negative effect of the meter zero point on the modulator quantization noise shaping is offset, the high signal-to-noise detection of an angular rate signal is ensured, and the pure digital output of the silicon micro-gyroscope is realized at the same time.
Owner:XIAN FLIGHT SELF CONTROL INST OF AVIC
Hot-melt pressure-sensitive adhesive for gas-permeable membrane and preparation method of hot-melt pressure-sensitive adhesive
InactiveCN111732918AImprove heat stabilityImprove low temperature flexibilityMineral oil hydrocarbon copolymer adhesivesNon-macromolecular adhesive additivesEpoxyElastomer
The invention relates to a hot-melt pressure-sensitive adhesive for a breathable film and a preparation method of the hot-melt pressure-sensitive adhesive. The hot-melt pressure-sensitive adhesive isprepared from the following raw materials in parts by weight: 20-45 parts of a thermoplastic elastomer, 8-20 parts of toughened epoxy resin, 20-35 parts of tackifying resin, 0.5-5 parts of functionalized modified graphene, 0.1-1 part of an antioxidant and 1-5 parts of a cross-linking agent. The preparation process is simple in steps and good in controllability, and the prepared hot-melt pressure-sensitive adhesive is good in temperature resistance, has stable cohesiveness with polyethylene materials, is high in initial adhesion and good in permanent adhesion, and has a very good application prospect.
Owner:嘉好(太仓)新材料股份有限公司
Driving belt
ActiveCN100451381CReduce the amount of lateral bendingReduced transverse bending stressV-beltsEngineeringSaddle shape
Drive belt (1) comprising at least one continuous band (21) and a number of cross elements (30) having a transversely curved saddle surface (31) of saddle radius (Rs) for interacting with an inwardly oriented main face of the continuous band (21) that at a first lateral side thereof adjacent a pillar part (33) of the element (30) connects to a concavely recessed surface part (34) through a first convexely curved transition surface part (35). The drive belt further incorporating the features that: a transverse width (W) of the continuous band (21) is larger than a transverse width of the saddle surface (31); the saddle radius (Rs) is essentially constant throughout the transverse width of the saddle surface (31); the saddle radius (Rs) is smaller than a so-called band radius (Rb) of a transverse curvature of the band (21) in an unloaded state thereof, irrespective of an amount of bending in the longitudinal direction of the band (21); and the first transition surface part (35) forms a relatively sharp edge. <IMAGE>
Owner:ROBERT BOSCH GMBH
Insulating fire-extinguishing agent for high-temperature oil fire of transformer and application method thereof
ActiveCN110141820ASolve the problem of being easily decomposed by evaporationReduce flammabilityFire extinguisherEngineeringOxygen
The invention discloses an insulating fire-extinguishing agent for a high-temperature oil fire of a transformer and an application method thereof. The insulating fire-extinguishing agent comprises thefollowing components: 0.5% to 10% by weight of a strong-expansion surface covering agent, 0.5 to 30% by weight of an anti-high-temperature evaporant, 5% to 50% by weight of an oil-in-water aqua anti-reburning agent, and 15 to 50% by weight of water. In use, the fire-extinguishing agent is mixed with water according to a mixing ratio of 0.1% to 6%; and water mist with droplet diameter in a range of 300-900 [mu]m and droplet flow rate of 1.0 to 3.0 L / m<2>.min is used for outdoor wind-resistant electriferous fire extinguishing. The insulating fire-extinguishing agent of the invention has the characteristics that the agent can effectively go deep into the high-temperature oil fire for fire extinguishing, is capable of rapidly spreading to cut off oxygen so as to realize fire extinguishing, and forms an anti-reburning barrier layer which realizes coating of transformer oil with fire-extinguishing water aqua; and the insulating fire-extinguishing agent effectively extinguishes the oil fireof the transformer and can prevent re-burning. When the insulating fire-extinguishing agent is to be used, an appropriate droplet diameter and an appropriate droplet flow rate are adopted so as to achieve wind-resistant and electriferous fire extinguishing of outdoor transformers and protect the transformers from fires.
Owner:STATE GRID HUNAN ELECTRIC POWER +2
Routing network and node transmitting capacity sharing method thereof
InactiveCN104009914AReduce latencyAvoid livelockData switching networksData streamDeflection routing
The invention provides a routing network and a node transmitting capacity sharing method thereof. The routing network comprises a plurality of deflection routing nodes which are mutually connected. A cloud path is stored in each deflection routing node, the length of each cloud path does not exceed a preset threshold, and each cloud path corresponds to a unique input port of the corresponding deflection routing node. Each deflection routing node is used for conducting routing processing on a current deflection data stream when idle routing resources exist locally, and blocking the current deflection stream or directly transmitting the current deflection data stream to a next-hop node in the corresponding cloud path according to the fact that whether the deflection routing node is a tail node of the cloud path where the current deflection data stream belongs or not when no idle routing resources exist locally. The routing network and the node transmitting capacity sharing method of the routing network can avoid the livelock phenomenon on the premise of supporting node transmitting capacity sharing, and shorten data time delay.
Owner:INST OF COMPUTING TECH CHINESE ACAD OF SCI
Air guide assembly of air opening, air nozzle assembly and drying oven
ActiveCN111299103APromote sheddingEasily damagedPretreated surfacesCoatingsElectrical batteryLaboratory oven
The invention relates to the technical field of drying ovens, and discloses an air guide assembly of an air opening, an air nozzle assembly and a drying oven. The air guide assembly of the air openingcomprises at least one air blocking mechanism arranged in the length direction of the air opening, each air blocking mechanism comprises a first surface and two first side faces connected with the first surface, and the two first side faces of each air blocking mechanism are oppositely arranged; and the first surfaces are opposite to the air opening, and one edges, away from the first surface, ofthe two first side faces of each air blocking mechanism are connected to the two long edges of the air opening correspondingly. The air nozzle assembly can effectively reduce the amount of hot air making contact with a blank area, specifically can reduce deformation and wrinkles of the position, in the blank area, of a base material (such as a pole piece foil), improves the situations that the edge, close to the blank area, of a coating layer (an active substance layer on a pole piece) cracks and the like, and then effectively improves the yield of a coating drying product (a battery pole piece).
Owner:CHINA AVIATION LITHIUM BATTERY RES INST CO LTD
Human milk fortifier with high protein and long chain poly unsaturated fatty acids for improving body adipose tissue distribution
ActiveUS9089533B2Optimize allocationImproved tissue distributionMilk preparationOrganic chemistryHuman milk fortifierSubcutaneous adipose tissue
The present invention relates to human milk fortifiers comprising high protein content and long chain poly-unsaturated fatty acids. Use of such human milk fortifier improves the body adipose tissue distribution by increasing the subcutaneous adipose tissue mass, while at the same time not increasing visceral adipose tissue.
Owner:NV NUTRICIA
Electric vehicle short magnetic circuit rare earth-free permanent magnet motor
ActiveCN109245353ASave rare earth resourcesOffset negative effectsMagnetic circuit rotating partsElectric machinesRare earthPermanent magnet motor
The invention provides an electric vehicle short magnetic circuit rare earth-free permanent magnet motor, and belongs to the technical field of automobile motors. the motor comprises a convex lens-shaped iron core, a non-magnetically conductive rotor iron core, a stator iron core, an excitation winding, an armature winding, a screw, a tablet and a shaft, wherein the stator iron core has 12 statorpoles of equal width on the inner side thereof; The non-magnetic conductive rotor core is located on the inner side of the stator core and fixed on the shaft; The non-permeable rotor core has seven circular arc grooves. A convex lens-shaped iron core capable of conducting magnetic field is embedded in the circular arc-shaped groove, and the excitation winding and the armature winding are all centralized short-moment windings; an excitation winding is wound on every other stator pole of the stator iron core, and the armature winding is wound on the other stator poles. The technology of the invention is a short magnetic circuit motor, and the iron loss is small under the same magnetic density; the rare earth permanent magnet material is not used to save rare earth resources.
Owner:佛山市顺德龙佳微电机实业有限公司
Three-dimensional sucker
ActiveCN104786229AReduce rotation speedOffset negative effectsGripping headsEngineeringCompressed air
The invention discloses a three-dimensional sucker. The three-dimensional sucker comprises a sucker body, wherein a cavity with a round cross section is arranged in the sucker body and is provided with a sealed end surface and an opening end surface, a tangential spraying nozzle connected with a compressed air source is arranged on a wall surface of the cavity, a big-end-down hollow circular truncated cone is arranged on the opening end surface of the cavity, and the upper end opening of the hollow circular truncated cone and the opening of the opening end surface of the cavity coincide; a spiral groove is formed in the inner side surface of the hollow circular truncated cone and forms a fixed exhaust passage, and the spiral groove is communicated with the internal cavity and the peripheral environment. The three-dimensional sucker can adsorb a three-dimensional object, and the spiral groove suppresses influences of an irregular shape of the surface of the object on air exhausting. Meanwhile, when the air is exhausted along the spiral groove, the circumferential speed component can be kept to the maximum extent.
Owner:ZHEJIANG UNIV
Lead storage battery positive electrode plate taking 4BS-graphene as additive and preparation method of positive electrode plate
InactiveCN108365179AReduce sizeImprove convenienceLead-acid accumulatorsLead-acid accumulator electrodesEngineeringGraphene
The invention discloses a lead storage battery positive electrode plate taking 4BS-graphene as an additive and a preparation method of the positive electrode plate. The positive electrode plate comprises the raw materials of lead powder, 4BS, graphene, acetylene black and red lead; and the positive electrode plate has the main components of <beta>-PbO<2>, <alpha>-PbO<2> and graphene. According tothe lead storage battery positive electrode plate taking 4BS-graphene as the additive and the preparation method of the positive electrode plate, a seed crystal effect is played in positive electrodecuring by virtue of addition of 4BS, the size and uniform distribution degree of 4BS in the unprocessed positive electrode plate can be optimized, the relative contents and structures of the <alpha>-PbO<2> and <beta>-PbO<2> in the finished electrode plate can be adjusted, and beneficial influences to the performance, particularly prolonging of the service life, of the positive electrode of the lead acid battery can be realized; by adding graphene to the electrode material, the conductive performance of the electrode can be improved effectively, the deep layer active materials with the electrode micropore structure can be fully utilized, the discharge capacity is increased, and negative effects of relatively high content of <alpha>-PbO<2> in the positive electrode finished electrode plate to the positive electrode capacity caused by taking 4BS as the additive can be counteracted.
Owner:JIYUAN VOCATIONAL & TECHN COLLEGE
Combustion system of vortex-type diesel engine
ActiveCN102251845BImprove reliabilityEvenly mixed gasInternal combustion piston enginesPistonsCombustion systemCombustion chamber
The invention discloses a combustion system of a vortex-type diesel engine. The system comprises a main combustion chamber and a vortex chamber; the main combustion chamber is positioned between an air cylinder cover and the top surface of a piston; an embedded lump of the vortex chamber is provided with a vortex channel which communicates the vortex chamber and the main combustion chamber; the side close to the center of the vortex chamber, of the cross section of the vortex channel which is vertical to the gas circulation direction is a straight line, while the side close to the wall of thevortex wall of the cross section of the vortex channel which is vertical to the gas circulation direction is an arc line; the straight line side and the arc line side smoothly transit through an externally-arch circular arc line; and the area of the cross section of the vortex channel in the gas circulation direction is not changed, and the length-width ratio D / C of the cross section is 2.75-2.85. The structure form of the vortex chamber of the combustion system enables the vortex strength in the whole vortex chamber is relatively uniform, the oil ejected by a fuel injector has enough time tobe mixed with the vortex gas, more uniform mixed gas is obtained, the combustion efficiency is improved, the economic property is improved, the emission is reduced, the starting capability is lowered, and the reliability of the fuel injector is also improved.
Owner:JIANGSU CHANGFA AGRI EQUIP
A photovoltaic tile system
ActiveCN111565007BExtended service lifePrevent rustPhotovoltaic supportsRoof covering using slabs/sheetsStructural engineeringAlloy
The invention relates to a photovoltaic tile system, which comprises a color steel tile, an alloy frame, two photovoltaic tiles, two supporting frames and a sealing assembly, wherein a ridge frame isformed on the color steel tiles, the alloy frame is supported at the top of the ridge frame, clamping grooves are formed in the two opposite sides of the alloy frame respectively, the edges of the twophotovoltaic tiles are inserted and fixed into the two clamping grooves respectively, and the two supporting frames are installed on the two opposite sides of the ridge frame respectively. The service life of the photovoltaic tile system is not easily affected by screw corrosion.
Owner:谢旭阳
Feed additive and application thereof in largemouth bass feed
PendingCN114376117AReduce adverse effectsGood for healthAccessory food factorsBiotechnologyAnimal science
The invention provides a feed additive and application thereof in largemouth bass feed, and the feed additive comprises the following components in parts by weight: 40-90 parts of hydrolyzed tannic acid, 2-6 parts of gallic acid, 0.2-2 parts of silicon dioxide and 5-50 parts of tannin. The tannin is added into the feed additive, so that the dosage of the hydrolyzed tannic acid can be reduced, and the feed additive is used for the largemouth bass feed, so that the liver glycogen content and the serum triglyceride level of the largemouth bass can be remarkably reduced, the survival rate and the antioxidant level can be improved, and the intestinal health level can also be improved.
Owner:WUFENG CHICHENG BIOTECH
A construction method of logic qubit quantum gate based on cascaded GHz state coding
The invention discloses a cascaded GHZ state code based quantum gate construction method of logic quantum bits. The method comprises the steps that coded logic quantum bits based on cascaded GHZ statecodes serve as input, each coded logic quantum bit is formed by multiplying N cascaded logic quantum bits represented in the GHZ state, and each logic quantum bit represented in the GHZ state is formed by m physical quantum bits; a quantum bit gate composed of a bit flipping gate, a phase flipping gate and a control NOT gate is constructed, and bit flipping, phase flipping and control NOT operation are carried out on each input coded logic quantum bit; and coded logic quantum bits after different operations are obtained in the output end. Via the method of the invention, operations related tothe cascaded GHZ state code based coded logic quantum bits can be realized, the method is realized via basic logic gates, the method has an anti-interference capability as to certain error models, and negative influence caused by photon loss can be offset to certain extent.
Owner:NANJING UNIV OF POSTS & TELECOMM
Flexible electric actuator based on sprayed non-metal electrode and preparation method thereof
PendingCN114497346AActuation Speed GuaranteedLow costPiezoelectric/electrostrictive device manufacture/assemblyPretreated surfacesMetallic electrodeConductive polymer
The invention discloses a flexible electric actuator based on a sprayed non-metal electrode and a preparation method of the flexible electric actuator. The ionic polymer intermediate layer is prepared by dissolving TPU colloidal particles in a DMF solution, uniformly mixing the TPU colloidal particles with an ionic liquid according to a certain proportion, dripping the mixture on the surface of a specific glass container, and drying the mixture at a specific temperature program; the upper surface and the lower surface of the ionic polymer middle layer are respectively covered with a non-metal electrode layer through an ultrasonic spraying process; the non-metal electrode layer precursor solution is formed by uniformly mixing a non-metal conductive polymer material, a carbon nanotube, dimethyl sulfoxide, ethanol and ionic liquid according to a certain proportion, the electrode layer precursor solution is attached to the upper and lower surfaces of the ionic polymer intermediate layer through an ultrasonic spraying process, and the spraying process is continuously heated by a heating stage. According to the invention, not only can large-scale preparation and self-defined patterning be conveniently carried out at low cost, but also the actuating speed of the device can be well guaranteed.
Owner:NANJING UNIV
Three-dimensional suction cup
The invention discloses a three-dimensional sucker. The three-dimensional sucker comprises a sucker body, wherein a cavity with a round cross section is arranged in the sucker body and is provided with a sealed end surface and an opening end surface, a tangential spraying nozzle connected with a compressed air source is arranged on a wall surface of the cavity, a big-end-down hollow circular truncated cone is arranged on the opening end surface of the cavity, and the upper end opening of the hollow circular truncated cone and the opening of the opening end surface of the cavity coincide; a spiral groove is formed in the inner side surface of the hollow circular truncated cone and forms a fixed exhaust passage, and the spiral groove is communicated with the internal cavity and the peripheral environment. The three-dimensional sucker can adsorb a three-dimensional object, and the spiral groove suppresses influences of an irregular shape of the surface of the object on air exhausting. Meanwhile, when the air is exhausted along the spiral groove, the circumferential speed component can be kept to the maximum extent.
Owner:ZHEJIANG UNIV
A real-time ddos defense system based on dpdk
ActiveCN113556364BIncrease forwarding rateImprove acceleration performanceTransmissionData packPathPing
The invention discloses a DDoS real-time defense system based on DPDK. The system includes modules such as fast forwarding path, machine learning rule table, fast forwarding table, priority queue scheduling, flow monitoring and the like. The present invention targets unknown complex attacks through the DPDK-based data forwarding plane, provides priority to the victim with mission-critical preferred traffic, and efficiently forwards data packets; secondly, the present invention implements machine learning matching rules and uses flexible scheduling methods for traffic management to offset machine attacks. Negative effects caused by learning model defects. The system has the advantages of deployability, high efficiency, and fault tolerance. It can realize data-driven traffic classification based on machine learning rules, thereby defending against DDoS attacks in real time, achieving efficient intra-network forwarding, and improving the benign traffic forwarding rate. .
Owner:ZHEJIANG UNIV
A kind of deplating solution and deplating process for removing nickel layer on copper surface
The invention discloses a stripping solution for removing a nickel layer on a copper surface, which is obtained by uniformly mixing the following raw materials in parts by weight: 15-35 parts of sodium bromide, 6-10 parts of oxidizing agent, 5-10 parts of tartaric acid, urea 0.5-1 part, 0.2-0.5 part of benzotriazole, 0.1-0.3 part of cobalt acetate, and 40-60 parts of water; the oxidizing agent is 30wt% hydrogen peroxide aqueous solution, manganese dioxide, and sodium perbromate according to the mass ratio 10~20:3~5:1 mixture. The deplating solution of the invention has high deplating efficiency for the nickel layer and does not cause corrosion to the copper substrate, and has important practical application value.
Owner:清远鸿闰表面处理技术有限公司
A silicon micro -gyro Sigma Delta detection closed -loop control system structure and parameter setting method
ActiveCN109540176BRealize pure digital outputOffset negative effectsMeasurement devicesLoop controlGyroscope
Owner:XIAN FLIGHT SELF CONTROL INST OF AVIC
A preparation method of super-tough rigid polyvinyl chloride pipe compounding material
The invention discloses a preparation method for a super-tough rigid polyvinyl chloride pipe mixing material. The method comprises the following steps: adding 100 parts by weight of polyvinyl chloride, 4-10 parts by weight of an acrylonitrile-butadiene-styrene terpolymer, 1-2 parts by weight of methyl methacrylate, 0.2-0.5 part by weight of sodium dodecyl sulfate and 200 parts by weight of water into a reactor with cooling water and nitrogen gas inlets and outlets, introducing a nitrogen gas for 10 min, starting an ultrasonic generator, performing ultrasonic treatment for 20-30 min, wherein reaction temperature is 20-30 DEG C, after the reaction is completed, performing filtration, and performing drying; and adding the dried material into a high-speed mixing machine, adding 10-20 parts ofnano calcium carbonate, 1-3 parts by weight of a stabilizer, 1-3 parts by weight of an acrylate processing auxiliary agent, 1-3 parts by weight of an internal lubricant and 0.3-1 part by weight of anexternal lubricant in sequence, performing mixing, when temperature is 110-120 DEG C, discharging a material, and performing cooling to obtain the super-tough rigid polyvinyl chloride pipe mixing material. The mixing material disclosed by the invention can be used for extruding a rigid polyvinyl chloride pipe with high toughness, low costs, excellent comprehensive mechanical properties, and good heat resistance and weather resistance.
Owner:佛山顾地塑胶有限公司
electromagnetic actuator
ActiveCN107975449BOffset negative effectsEddy current suppressionReciprocating/oscillating/vibrating magnetic circuit partsWindings insulation materialMagnetic actuationStator coil
The invention proposes an electromagnetic actuator (30) which drives an armature (33) by means of electromagnetic force. The electromagnetic actuator includes a stator (82), a coil (81) and an insulator (84). The stator (82) is made of magnetic material and has a cylindrical portion. Coils (81) are provided outside the stator. The coil (81) generates a magnetic field when energized. The insulator (84) is provided in a specific area of the stator (82) radially facing the coil (81). The insulator (84) extends circumferentially partially along the stator (82) and inhibits current from flowing circumferentially through the stator (82). The stator (82) is integrally formed continuously in the circumferential direction from magnetic material.
Owner:DENSO CORP
Electromagnetic actuator
ActiveCN107975449AOffset negative effectsEddy current suppressionReciprocating/oscillating/vibrating magnetic circuit partsWindings insulation materialEngineeringMagnetic actuation
Owner:DENSO CORP
A Method of Suppressing Peak-to-Average Ratio of Orthogonal Frequency Division Multiplexing ofdm Signal
ActiveCN106385394BOffset negative effectsOvercome the disadvantage of large loss of bit error rate performanceMulti-frequency code systemsCommunications systemCyclic prefix
The invention discloses a method for suppressing the peak-to-average ratio of orthogonal frequency division multiplexing (OFDM) signals. The method includes the following steps that: (1) inputted serial data signals are converted into parallel signals at a signal transmitting end, so that a parallel signal sequence can be obtained; (2) the obtained parallel signal sequence is multiplied by a constructed precoding matrix, so that a peak-to-average ratio-suppressed precoded signals can be obtained; (3) a cyclic prefix is added to the precoded signals, companding processing is performed through using a segmented exponential companding function, so that the peak-to-average ratio of the companded signals can be further suppressed; and (4) parallel-to-serial conversion is performed on the companded signal sequence at the signal transmitting end, so that orthogonal frequency division multiplexing (OFDM) transmission signals can be obtained. The method of the invention is low in complexity, can significantly reduce the signal-to-average ratio of the signals without decreasing the bit error rate of the received signals, and can improve the performance of a communication system.
Owner:XIDIAN UNIV
Rare-earth-free permanent magnet motor with short magnetic circuit for electric vehicles
ActiveCN109245353BSave rare earth resourcesOffset negative effectsMagnetic circuit rotating partsElectric machinesElectric machinePermanent magnet motor
The invention provides an electric vehicle short magnetic circuit rare earth-free permanent magnet motor, and belongs to the technical field of automobile motors. the motor comprises a convex lens-shaped iron core, a non-magnetically conductive rotor iron core, a stator iron core, an excitation winding, an armature winding, a screw, a tablet and a shaft, wherein the stator iron core has 12 statorpoles of equal width on the inner side thereof; The non-magnetic conductive rotor core is located on the inner side of the stator core and fixed on the shaft; The non-permeable rotor core has seven circular arc grooves. A convex lens-shaped iron core capable of conducting magnetic field is embedded in the circular arc-shaped groove, and the excitation winding and the armature winding are all centralized short-moment windings; an excitation winding is wound on every other stator pole of the stator iron core, and the armature winding is wound on the other stator poles. The technology of the invention is a short magnetic circuit motor, and the iron loss is small under the same magnetic density; the rare earth permanent magnet material is not used to save rare earth resources.
Owner:佛山市顺德龙佳微电机实业有限公司
Photovoltaic tile system
ActiveCN111565007AExtended service lifePrevent rustPhotovoltaic supportsRoof covering using slabs/sheetsEngineeringStructural engineering
The invention relates to a photovoltaic tile system, which comprises a color steel tile, an alloy frame, two photovoltaic tiles, two supporting frames and a sealing assembly, wherein a ridge frame isformed on the color steel tiles, the alloy frame is supported at the top of the ridge frame, clamping grooves are formed in the two opposite sides of the alloy frame respectively, the edges of the twophotovoltaic tiles are inserted and fixed into the two clamping grooves respectively, and the two supporting frames are installed on the two opposite sides of the ridge frame respectively. The service life of the photovoltaic tile system is not easily affected by screw corrosion.
Owner:谢旭阳
Who we serve
- R&D Engineer
- R&D Manager
- IP Professional
Why Patsnap Eureka
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com