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37results about How to "Achieve performance" patented technology

Cloud task deep reinforcement learning scheduling method based on correlation perception

The invention relates to a cloud task deep reinforcement learning scheduling method based on correlation perception, which belongs to the technical field of deep reinforcement learning, is realized by a DDPG deep reinforcement learning network based on an Actor-Critic framework, and comprises the following steps: S1, initializing the network; s2, uploading a calculation task; s3, monitoring attributes of the virtual machine; s4, counting task attributes; s5, calculating the sensing state of the virtual machine; s6, selecting a state-action transfer pair from the memory playback buffer area; s7, calculating a priori reward; s8, calculating a posterior reward according to the response time and the operation cost; s9, updating and iterating the parameters of the network by utilizing the reward; and S10, executing scheduling by the virtual machine migration scheduler, and returning to the step S3 to repeat task scheduling at the next moment until the calculation task is completed. According to the method, the Pearson correlation coefficient and the standard deviation are used for evaluating the characteristics of the workload, accurate representation of the state perceived by the virtual machine is achieved, a cost and performance reward function is constructed, and optimization of the performance and the total cost of the virtual machine cluster is achieved.
Owner:CHONGQING UNIV OF TECH

Quantitative FMECA-based weapon station six-property integrated design method

PendingCN119442852Aachieve performanceConfiguration CADDesign optimisation/simulationDesign improvementSecurity design
The invention discloses a quantitative FMECA-based six-property integrated design method for a weapon station. The method comprises the following steps: step 1, carrying out system definition on the weapon station; step 2, fault mode analysis; step 3, fault reason analysis; step 4, fault influence and severity analysis; step 5, a fault detection method; step 6, design improvement and use compensation measure analysis; step 7, analyzing harmfulness; determining the scope of reliability design according to the step 7; determining the scope of maintainability design according to the steps 2 to 4; determining the scope of the supportability design according to the steps 5-6; determining the category of testability design according to the step 5; determining a security design category according to the step 2 and the step 5; and determining the scope of the environmental adaptability design according to the step 2. According to the method, quantitative FMECA analysis is firstly carried out on the weapon station, design is improved and optimized based on the quantitative FMECA analysis result, and performance and six properties are integrally and synchronously carried out.
Owner:CHANGAN AUTOMOBILE (GRP) CO LTD

Water vector high-efficiency energy-saving cooling tower control method and control system thereof

The invention discloses a water vector high-efficiency energy-saving cooling tower control method and system, and relates to the technical field of water vector high-efficiency energy-saving cooling towers, and the method comprises the following steps: uniformly arranging a plurality of humidity monitoring points in a surrounding influence environment of a water vector high-efficiency energy-saving cooling tower, and monitoring the humidity change around the cooling tower in real time; real-time data are collected through humidity monitoring points. Humidity monitoring points are evenly arranged around the water vector efficient energy-saving cooling tower, humidity change can be monitored in real time, the condition of large-amplitude humidity change can be recognized in time, after the large-amplitude humidity change is recognized, the regulation and control frequency of the rotation rate of the water vector machine core is intelligently regulated and controlled through the humidity change frequency, and the water vector machine core is controlled to rotate. The response capability and adaptability of the cooling tower are improved, the rotation rate of the water vector machine core is further dynamically adjusted based on the humidity value obtained in real time, and it can be ensured that the cooling tower always keeps the optimal cooling effect under various environmental conditions.
Owner:SHENZHEN CHENNUO ENERGY SAVING TECH CO LTD

Low-orbit satellite group inter-satellite laser communication networking test system and method

The invention discloses a networking test system and method for laser communication between low-orbit star groups, and belongs to the technical field of satellite communication, the networking test system comprises a satellite attitude simulation device, a light beam far-field characteristic simulation device and a ground side simulation device, and the satellite attitude simulation device is used for simulating the orbit, attitude and vibration change of a satellite platform in a satellite laser link; the light beam far-field characteristic simulation equipment is used for simulating the distribution state and attenuation dynamic change of the laser beams in the inter-satellite laser link of the low-orbit satellite group after long-distance transmission according to the laser signal; and the ground side simulation equipment is used for receiving the orbit, attitude and vibration change data of the satellite platform and the distribution state and attenuation dynamic change data of the laser beams after long-distance transmission, and cooperates with the laser communication terminal to complete the performance test of the inter-satellite laser communication networking of the low-orbit satellite group. According to the invention, a one-to-many low-orbit satellite group inter-satellite laser communication link performance test and a low-orbit satellite group inter-satellite multi-node laser communication networking performance test can be supported.
Owner:NAT INNOVATION INST OF DEFENSE TECH PLA ACAD OF MILITARY SCI

Network management method, electronic equipment and computer readable storage medium

PendingCN119520301Aachieve performanceTransmissionNetwork managementData mining
The invention provides a network management method, electronic equipment and a computer readable storage medium, and the method comprises the steps that a digital twin system receives a network service request sent by a request end, determines target network entity data required for executing the network service request, and obtains a target service model corresponding to the network service request; and inputting the target network entity data into the target service model to obtain a service result corresponding to the network service request. According to the embodiment of the invention, at least one network service model is deployed in the digital twin system to construct the digital twin corresponding to the network entity, and the state of the network entity is predicted or monitored according to the service result of the target service model in the digital twin system for the target network entity data, so that the behavior and performance of the network entity are simulated. And service support is provided for the self-intelligent bearer network.
Owner:ZTE CORP

Temperature control method and device and storage medium

The invention relates to a temperature control method and device and a storage medium. The temperature control method comprises the steps that the current environment temperature of the environment where the electronic equipment is located at present is obtained, a current temperature control strategy corresponding to the current environment temperature is determined, and a corresponding relation exists between the environment temperature and the temperature control strategy; and performing temperature control on the electronic equipment according to the current temperature control strategy corresponding to the current environment temperature of the electronic equipment. According to the technical scheme, the corresponding temperature control strategy can be switched according to the current environment temperature, temperature control over the electronic equipment is achieved, and better experience is provided for a user.
Owner:BEIJING XIAOMI MOBILE SOFTWARE CO LTD

A high throughput automatic sampling plasma mass spectrometer

ActiveCN224609856Urealize the unattainableachieve performance
The utility model discloses a kind of high-flux automatic sample introduction plasma mass spectrometer, the device includes the precision ceramic substrate with V-shaped locating slot, corrosion-resistant slider with permanent magnet array and electromagnet being sealed inside, stator coil assembly fixed to the outside of substrate and controller, stator coil assembly non-contact drive slider high-speed movement, when slider reaches target position vicinity, controller disconnects drive current and connects electromagnet, make the locating pin of slider bottom and the V-shaped locating slot on substrate forced engagement locking.The utility model separates high-speed drive and mechanical locking completely, uses high-rigidity, corrosion-resistant mechanical structure as final precision anchor point, fundamentally solves the positioning overshoot and vibration problem under high speed, and has excellent chemical corrosion resistance, significantly improves the operation efficiency, positioning accuracy and long-term reliability of device.
Owner:HANGZHOU XIECE INFORMATION TECH CO LTD

Zone area voltage coordinated optimization method and system considering carbon saving

The invention discloses a transformer area voltage coordinated optimization method and system considering carbon saving. According to the method, the output of the capacitor bank, the SVG and the photovoltaic inverter is dynamically adjusted according to the power-voltage coefficient relation table, and the problems of voltage overshoot and undershoot caused by photovoltaic power generation fluctuation are effectively solved. And the equipment response is rapid, the voltage of each node in the transformer area is ensured to be within an allowable range, the occurrence of overvoltage and undervoltage is avoided, and the operation reliability of a power grid is improved. In combination with a transformer load rate and life loss coefficient model, the system can optimize scheduling in real time according to the load state of the transformer, and premature aging caused by long-term high-load operation of the transformer is avoided. Through reasonable load distribution, the additional influence of carbon emission on the service life of the transformer is reduced, and long service life and high efficiency of transformer operation are realized. The optimized scheduling strategy enables the capacitor bank, the SVG and the photovoltaic inverter to work cooperatively, thereby reducing the overall energy loss of the system, and indirectly reducing the carbon emission.
Owner:ZHONGWEI POWER SUPPLY COMPANY OF STATE GRID NINGXIA ELECTRIC POWER

Computer vision-based method for detecting surface defects of green printed products

ActiveCN121527054BHigh recognition sensitivityReduce the risk of missed detectionMultiscale decompositionAlgorithm
The present application relates to the technical field of industrial vision detection, and discloses a green color printing surface defect detection method based on computer vision. The method comprises the following steps: collecting real-time image flow and performing multi-scale decomposition to generate a feature vector sequence; constructing a dynamic defect template set by using a generative adversarial network; encoding features by using a convolutional neural network, calculating a similarity matrix with the template set, and generating a defect matching index; adjusting the detection threshold value adaptively according to the defect matching index, and obtaining a defect probability distribution map through clustering analysis; identifying a defect aggregation area through space-time domain analysis, and starting a local re-inspection mechanism; updating a defect feature prototype library and optimizing network weights by using re-inspection data, and forming a self-learning closed loop; and finally performing full-process quality consistency inspection and outputting a report. The present application realizes dynamic adaptation and continuous optimization of the detection process.
Owner:SHIJIAZHUANG DASHIYE GEOGRAPHICAL MAPS COLOR PRINTING CO LTD

A bio-based shape memory eucommia ulmoides rubber composite material and a preparation method thereof

PendingCN122255582Aachieve performanceachieve stabilityHybrid seedNano hybrid
This invention relates to the field of shape memory material preparation technology, specifically to a bio-based shape memory Eucommia ulmoides gum composite material and its preparation method. All components of the composite material are of entirely bio-based origin, using natural Eucommia ulmoides gum as the matrix. Nano-hybrid seed crystals composed of cellulose nanocrystals and carbon quantum dots are introduced. The cellulose nanocrystals act as nucleating agents, guiding and accelerating the cooling crystallization of the Eucommia ulmoides gum, while the carbon quantum dots form the shell, improving heat transfer efficiency. In the preparation process, this application uses triacylglycerol lipase as a biocatalyst, which can initiate an in-situ esterification reaction between the filler and the matrix at a low temperature of 65-75℃. This not only reduces energy consumption but also avoids the thermal degradation and damage to the Eucommia ulmoides gum macromolecular chains caused by high-temperature strong shear, achieving high performance and batch-to-batch stability of the material.
Owner:CHINA MERCHANTS CHONGQING COMM RES & DESIGN INST +1

A method and system for intelligent operation and maintenance scheduling of distributed photovoltaic power plants

This invention relates to the field of photovoltaic power plant operation and maintenance, specifically to an intelligent operation and maintenance scheduling method and system for distributed photovoltaic power plants. An intelligent operation and maintenance scheduling system for distributed photovoltaic power plants includes: a task generation module, a task aggregation module, and a dynamic scheduling and execution module. This invention overcomes the technical challenges of inaccurate fault location and difficulty in monitoring latent degradation in distributed photovoltaic power plants by establishing a collaborative diagnostic mechanism that integrates string-level IV curve analysis and UAV image recognition. This method accurately correlates and cross-validates electrical characteristics and visual features in the spatiotemporal dimension, enabling precise identification of the smallest fault unit and clear distinction of fault types. Simultaneously, it effectively isolates environmental noise, achieving early warning of slow component performance degradation, thereby upgrading the operation and maintenance mode from overall extensive monitoring to component-level refined management.
Owner:JIANGXI AINENG TECH CO LTD

Preparation method of traditional Chinese medicine composition for treating skin tinea disease, allergic dermatitis and acne

PendingCN121944026Aachieve performanceAchieve indicatorsAntimycoticsPharmaceutical non-active ingredientsAllergic dermatitisGallic acid ester
The invention discloses a preparation method of a traditional Chinese medicine composition for treating skin tinea, allergic dermatitis and acne, and relates to the field of pharmaceutical preparations, the extraction rate of gallic acid and ethyl gallate contained in total tannin in fructus chebulae flesh, fructus terminaliae billericae flesh and fructus chebulae immaturus is improved through an enzymolysis method, and the transfer rate of effective components of quercetin is improved through a boiling granulation technology; therefore, the effect of treating psoriasis of the composition is improved. By adopting a boiling granulation technology, the technical problems of long preparation period and high cost in the prior art are solved. The release speed of aloe in intestinal tracts is controlled by adopting a slow release technology, and the upper and lower limit content range of barbaloin is controlled to reduce the occurrence rate of adverse reactions of the composition. Meanwhile, butyl hydroxy anisd (BHA), butylated hydroxytoluene (BHT) and a citric acid system are adopted, so that the problems of PEO skeleton degradation, out-of-control drug release behavior and insufficient main drug stability of the barbaloin-PEO sustained release preparation are solved.
Owner:HEILONGJIANG JIREN PHARMACEUTICAL CO LTD

Low cost iron-nickel based heat resistant alloy and high speed rolling method thereof

The present application relates to a low-cost iron-nickel-based heat-resistant alloy and a high-speed rolling method thereof, and belongs to the technical field of special alloy manufacturing. The present application solves the technical problems of cracking, short tool life, high energy consumption and low efficiency in subsequent solid solution treatment caused by uneven material temperature rise and cooling during high-speed rolling of the existing heat-resistant alloy. In the method of the present application, the heated heat-resistant alloy rolling stock is sequentially passed through the rough rolling, intermediate rolling and finishing rolling units. At least two cooling devices are arranged at the key positions in the later stage of the finishing rolling unit. The polyacrylamide aqueous solution containing specific particle size and proportion of aluminum oxide powder is used for intermittent jet cooling of the wire. The finished wire is directly put into the solid solution furnace for online solid solution treatment and water cooling. The present application realizes the integrated production of heat-resistant alloy wire from rolling to heat treatment with high efficiency, high quality and low energy consumption. The prepared wire has uniform structure and excellent performance, and is especially suitable for manufacturing engine valves.
Owner:CHINA IRON & STEEL RESEARCH INSTITUTE GROUP CO LTD

Body-side all-in-one machine chip module design system based on multi-scale feature embedding fusion

The invention provides a body-side all-in-one machine chip module design system based on multi-scale feature embedding fusion, which belongs to the technical field of chip design and comprises a chip data acquisition module for acquiring electronic component information of a chip and determining proper electronic components and circuit topological structures according to requirements so as to realize specific functions required by the chip; determining two or more indexes of the chip as optimization targets; creating and updating an optimal file; establishing an optimal individual file, and updating an optimal individual in the current file based on a multi-model random sorting and Pareto domination mode; in each ball game, a chip is configured to perform big data analysis, so that the sports game score processing efficiency and precision can be effectively improved, the problems of low efficiency and high cost of a multi-chip integrated layout design in the prior art can be improved, and the method has the advantages of scheme optimization reliability, efficiency and cost consideration.
Owner:SHANDONG SPORT UNIV

Anchor chain real-time data processing system for urban rail transit network operation command center system

The invention discloses an anchor chain real-time data processing system for an urban rail transit network operation command center system. The anchor chain real-time data processing system comprises an anchor chain data configuration module, an anchor chain dynamic detection module, an anchor chain loading and compiling module, an anchor chain data binding module, an anchor chain data execution module, an anchor chain data issuing module and an anchor chain dynamic unloading module. According to the method, anchor point data changes are monitored in real time through data anchor point subscription and publishing, and million-level anchor point data changes are responded within millisecond-level time; through dynamic loading and unloading of the chain link script, an anchor point data processing flow is flexibly replaced without shutdown of the system; the openness and high performance of anchor point data and chain link scripts are realized through dynamic compiling of the chain link scripts, and a large complex data processing flow is flexibly constructed by a plurality of data anchor points and a plurality of chain link scripts according to a directed acyclic graph (DAG) mode through dynamic binding of a data anchor point table, hooking of data anchor points and chain links and bidirectional flow of real-time data and logic processing.
Owner:NANJING RAIL TRANSIT SYST

Multi-station parallel battery cell rubberizing equipment

The invention provides multi-station parallel battery cell rubberizing equipment, and relates to the technical field of rubberizing equipment, the multi-station parallel battery cell rubberizing equipment comprises a main body, the top of the main body is fixedly provided with a rubberizing cylinder; an unwinding frame is fixedly mounted at the top of the front side of the main body; a limiting roller is rotationally mounted on the rear side of the unwinding frame; a station sliding plate is mounted on the rear side in the main body in a sliding manner; and a switching cylinder is further mounted on the rear side in the main body in a sliding manner. The use stability is ensured, the cutting piece replacement convenience and efficiency are remarkably improved, double optimization of performance and operation is achieved, and the problems that along with continuous operation of equipment and time lapse, a shearing tool in a shearing mechanism gradually becomes passivated, the cutting accuracy and efficiency are directly affected, and the cutting efficiency is affected are solved. More importantly, due to the fact that the shearing tools are often fixedly installed on a shearing mechanism, workers face the problems of complex operation and high difficulty when needing to replace the tools.
Owner:SHENZHEN FRESHEN TECH CO LTD

Self-dumping carbon residue box

ActiveCN224589845UEliminate abrasive actionReduce abnormal wear
This utility model relates to the field of self-unloading coal slag, and discloses a self-unloading coal slag box, including a frame, a hopper mounted on the frame, a discharge port at the bottom of the hopper, a discharge plate slidably mounted at the discharge port at the bottom of the hopper, a pneumatic device mounted on the frame at the discharge port, the pneumatic device being connected to the discharge plate and used to drive the discharge plate to open and close at the discharge port, and a dust removal device being mounted at the sliding connection between the discharge port and the discharge plate, the dust removal device being used to discharge the coal slag at the discharge port, and the discharge plate and the dust removal device being linked. The pneumatic device is connected to the discharge plate, and the discharge plate can be directly controlled by the pneumatic device, thereby controlling the opening and closing of the discharge port. When the coal slag box is unloading or after unloading and the device structure is restored, the coal slag embedded in the gaps or grooves is automatically removed, avoiding the jamming problem caused by the accumulation of coal slag. This design significantly improves equipment reliability, reduces the frequency of manual cleaning, avoids equipment failure, simplifies the operation process through the linkage design, and improves efficiency.
Owner:QINGTONGXIA ALUMINUM GRP

Three-phase heterointerface reversible proton ceramic battery oxygen electrode material and its preparation method

This invention belongs to the field of reversible proton ceramic battery technology, and relates to an oxygen electrode material for a three-phase heterointerface reversible proton ceramic battery. The three-phase heterointerface reversible proton ceramic battery oxygen electrode material is a three-phase composite containing A-site defects in double perovskite Pr. 1‑α BaCo2O 5+δ1 (PBC) phase, single perovskite BaPrO 3‑δ2 The invention comprises a (BPO) phase and in-situ desoluble praseodymium oxide nanoparticles; with the total mass percentage of PBC phase, BPO phase, and praseodymium oxide nanoparticles being 100%, the PBC phase accounts for 50-65 wt%, the BPO phase accounts for 33-45 wt%, and the praseodymium oxide nanoparticles account for 1-5 wt%. The three-phase heterogeneous interface oxygen electrode material constructed in situ in this invention exhibits tight coupling and synergistic effects among the three phases, resulting in both a low coefficient of thermal expansion and high catalytic activity. This oxygen electrode material demonstrates excellent electrochemical performance in reversible proton ceramic batteries, whether in fuel cell mode or electrolyzer mode.
Owner:HENAN UNIVERSITY

Dynamic reading method of storage device and storage device

The invention relates to the technical field of memory control, and discloses a dynamic reading method of a storage device and the storage device.The method comprises the steps that a reading instruction from a host system is received; obtaining an access address continuous value of the reading instruction; judging whether an access scene of the reading instruction is a continuous reading scene or a random reading scene according to the access address continuous value; when the access scene is a continuous reading scene, preliminarily setting a page reading access mode for access; counting a hit statistical value of the page reading access mode in an access process; and when the hit statistical value reaches a first preset statistical value, switching the page reading access mode into a cache reading access mode for access. Unnecessary cache occupation and rear-end flash memory access pressure are reduced, and balanced optimization of performance and efficiency is realized.
Owner:SHENZHEN XINGHUO SEMICON TECH CO LTD

Fast-charging multilayer composite solid electrolyte, preparation method and application

The invention discloses a fast-charging multi-layer composite solid electrolyte, a preparation method and application, the fast-charging multi-layer composite solid electrolyte is designed and constructed, the middle layer is a solid electrolyte with high ionic conductivity, and the two sides are LiBH4-based composite solid electrolytes with high critical current density; the problem that the ionic conductivity and the critical current density of single sulfide, halide, oxide and borohydride are difficult to consider at the same time is solved, the multi-layer composite solid electrolyte has high ionic conductivity and high critical current density at the same time, and the breakthrough of the comprehensive performance of the composite solid electrolyte is achieved.
Owner:RES INST OF ZHEJIANG UNIV TAIZHOU +1

Nylon powder for anti-wear of transmission shaft and its preparation method

The application relates to the field of anti-abrasion materials, in particular to nylon powder for anti-abrasion of a transmission shaft and a preparation method thereof. The nylon powder for anti-abrasion of the transmission shaft comprises, in mass parts, at least the following raw materials: nylon base material 85-95 parts, composite functional agent 5-12 parts, wear-resistant reinforcing agent 1-3 parts, antioxidant 0.3-1.0 parts, coupling agent 0.3-1.0 parts and nucleating agent 0.3-0.5 parts. The finally prepared nylon powder product can simultaneously maintain good comprehensive performances such as wear resistance, mechanics, temperature resistance, size stability, water resistance and corrosion resistance, can meet the anti-abrasion performance requirements of the existing transmission shaft, can greatly improve the reliability of the transmission shaft and prolong the use quality and service life, and provides a new solution for solving the problems.
Owner:GUANGDONG HONGWEI NEW MATERIAL TECH CO LTD

Lubricating and cooling system suitable for motor and speed reducer integrated device

The invention belongs to the technical field of lubrication and heat dissipation of integrated electric drive systems, and particularly relates to a lubrication and heat dissipation system suitable for a motor reducer integrated device. Comprising a casing (1), an oil circuit board (2) and a heat dissipation mechanism (3), the heat dissipation mechanism (3) comprises an integrated oil circuit on the upper side, a main radiator (8) and an auxiliary radiator (10), the main radiator (8) and the auxiliary radiator (10) are arranged on the lower side, and high-temperature lubricating oil passes through a lubricating oil pipeline of the oil circuit board (2) and then enters the main radiator (8) of the heat dissipation mechanism (3) through an oil inlet (7) of the main radiator; high-temperature lubricating oil passes through a lubricating oil pipeline of the oil way plate (2) and then enters an auxiliary radiator (10) of the heat dissipation mechanism (3) through an auxiliary radiator oil inlet (9), and low-temperature lubricating oil coming out of the auxiliary radiator (10) is directly injected into the bottom of an oil pool through an auxiliary radiator oil outlet (11); and low-temperature lubricating oil flowing out of the main radiator (8) enters the speed reducer through a pipeline and an oil port on the oil way plate (2) to radiate heat of the speed reducer, and is finally injected into the bottom of an oil pool.
Owner:CHINA HELICOPTER RES & DEV INST +1

Four-frequency-band reconfigurable balanced low-noise amplifier structure and regulation and control method

The invention provides a four-frequency-band reconfigurable balanced low-noise amplifier structure and a regulation and control method thereof. The structure is based on a balanced amplifier structure, a reconfigurable low-noise amplifier constructs a four-frequency-band reconfigurable balanced low-noise amplifier, and configuration of four frequency bands is achieved by switching a capacitor array in a reconfigurable low-noise amplifier matching structure; meanwhile, a configurable matching network with a wave trapping function is provided, so that a high-selection function of each frequency band is realized; the invention also provides a regulation and control method of the four-frequency-band reconfigurable balanced low-noise amplifier, which is convenient for effective implementation of the four-frequency-band reconfigurable balanced low-noise amplifier. According to the invention, the problems of high cost, large power consumption and the like, poor reconfigurable standing wave and large area of a single chip caused by the use of a plurality of different-frequency-band low-noise amplifiers or broadband low-noise amplifiers in a multi-frequency-band electronic system are solved, and the power-resistant characteristic and reliability of circuit work are improved; in addition, the circuit architecture is beneficial to the construction of a reconfigurable electronic system meeting the requirements of low noise and high power resistance, and can widely meet various application requirements of mobile communication, satellite communication and the like.
Owner:HANGZHOU DIANZI UNIV

Preparation method of hollow fiber composite loose nanofiltration membrane

The invention discloses a preparation method of a hollow fiber composite loose nanofiltration membrane, which specifically comprises the following processing steps: S1, firstly preparing materials, and manufacturing a hollow fiber membrane matrix; s2, manufacturing a composite loose layer; s3, carrying out cross-linking curing treatment on the membrane; s4, carrying out optimization treatment on the membrane; and S5, testing the performance of the film. According to the invention, the polyvinyl alcohol (PVA), the polyacrylic acid (PAA), the polyvinylpyrrolidone (PVP), the silicon dioxide, the carbon nano tube and the nano metal oxide are adopted as composite materials, and the selection and combination of the materials have relatively strong innovativeness in the field of nanofiltration membranes; the synergistic effect of the polymer and the nanoparticles is beneficial for improving the hydrophilicity, the separation performance and the anti-pollution capacity of the membrane.
Owner:QICHENG (JIANGSU) PURIFICATION TECH CO LTD

A piezoelectric MEMS device, its fabrication method and application

This invention discloses a piezoelectric MEMS device, its fabrication method, and its applications, belonging to the field of microelectromechanical systems (MEMS) technology. The fabrication method includes: preparing an SOI wafer; performing PSG spin-coating annealing and / or metallization modification on the device layer surface to form a conductive seed layer; depositing a piezoelectric layer; simultaneously etching the insulating layer, modified device layer, and piezoelectric layer using a specific mixed gas or pulse modulation process; forming a metal electrode layer and a bonding metal layer; and bonding and integrating with a TSV structure. This invention replaces traditional metal electrodes with metallization modification, avoiding electrode fatigue and aging, and improving device reliability; the use of single-mask synchronous etching and vapor phase release technology eliminates overlay and bonding errors, reducing process complexity and cost, making it suitable for high-performance sensors, ultrasonic detection, audio, and smart hardware.
Owner:ANHUI HUAXIN MICRO-NANO INTEGRATED CIRCUIT CO LTD

Lateral double-diffused metal oxide field effect transistor with coherent P-Top layer

ActiveCN119486204Aachieve performanceIncreased current capabilityLDMOSElectrical field strength
The invention discloses a lateral double-diffused metal oxide field effect transistor with a coherent P-Top layer. The two ends of the longitudinal P-type injection layer section are located below the first shallow trench isolation region and the second shallow trench isolation region respectively, the coherent P-type injection layer is formed in the mode that the longitudinal P-type injection layer section is connected with the transverse P-type injection layer section, and doping optimization introduced by the low-resistance path region and the STI region on the surface of the device is coherent into a whole. Therefore, the electric field distribution of the low-resistance path region and the STI region is adjusted together, and the local electric field intensity in the drift region of the device is reduced. According to the LDMOS device, the current performance is improved by reducing the longitudinal width of the P-Top layer between the first shallow trench isolation region and the second shallow trench isolation region, so that the performance of the LDMOS device is realized. According to the invention, the coherent P-Top layer is arranged in the low-resistance path region, and the STI region is optimized, so that the breakdown performance is improved, and the electric field control capability and the performance of the device are improved.
Owner:ZHEJIANG ICSPROUT SEMICONDUCTOR CO LTD

Sharing ridge-based cavity microwave coupler and millimeter wave filter integrated structure

The invention discloses a ridge-sharing child-mother type microwave cavity coupler and millimeter wave cavity filter integrated structure, particularly relates to the technical field of wireless communication, and solves the problems that in the prior art, loss is large in microwave and millimeter wave passive device integrated design, microwave and millimeter wave devices can influence each other, and the cost is low. And independent design of the two is difficult to realize. According to the technical scheme, a ridge waveguide structure is adopted, and meanwhile, a ridge sharing scheme is utilized, so that low-loss cross-function microwave and millimeter wave frequency band device integration is realized; according to the invention, integration of different devices is realized, and the devices can be independently designed and do not interfere with each other.
Owner:NANTONG UNIV

Purification method of BHET

The present invention provides a BHET purification method, which comprises: mixing a BHET-containing mixture with a solvent to obtain a BHET solution to be purified, and carrying out filtration treatment to obtain a filtrate; the filtrate passes through a resin bed layer at the flow speed of 2-10 BV / h for purification treatment, and BHET purified liquid is obtained; the resin bed layer comprises H-type gel cation exchange resin, OH-type gel anion exchange resin and a solvent, at least part of the surface of the H-type gel cation exchange resin contains sulfonic acid groups and H < + >, and at least part of the surface of the OH-type gel anion exchange resin contains quaternary ammonium groups and OH <->; the volume ratio of the H-type gel cation exchange resin to the OH-type gel anion exchange resin is 1: (1-5). The method can be used for removing metal ion impurities and inorganic impurities.
Owner:ZHEJIANG HENGYI PETROCHEMICAL RES INST CO LTD +1

Rolling element unit load test device and test method for rolling bearings

The present invention belongs to the technical field of bearing test, and relates to a rolling bearing rolling element unit load test device and test method, including an outer ring clamping device, a roller clamping device, an inner ring guide device, a radial and bending moment loading device, an axial loading device and a rolling element unit; the rolling element unit includes a bearing outer ring simulation block, a bearing inner ring simulation block and a roller, the outer ring clamping device limits the omnidirectional freedom of the bearing outer ring simulation block, the roller clamping device limits the rotational freedom of the roller, the inner ring guide device is used to assemble the bearing inner ring simulation block, the axial loading device abuts on the bearing inner ring simulation block to provide an axial load, the radial and bending moment loading device abuts on the bearing inner ring simulation block to provide a radial load for the rolling element unit, and the inner ring guide device is a movement guide limiter for the bearing inner ring simulation block. The composite loading and strain under the equivalent constraint conditions of the rolling element monomer boundary are realized, and the bearing performance and test experimental research are realized.
Owner:WAFANGDIAN BEARING GRP STATE BEARING ENG TECH RES CENT CO LTD

Separating material control mechanism for disordered material arranging and packaging machine

ActiveCN224061305UMeet processing needsVibration transfer path optimizationSievingScreeningSeparation technologyStructural engineering
The utility model discloses a separating material control mechanism for a disordered material arranging and packaging machine, which belongs to the technical field of material arranging and separating and comprises a base, four supporting rods are fixedly mounted at the top of the base, and three vibration material arranging mechanisms are sequentially mounted at the tops of the four supporting rods from bottom to top. A storage box is installed on the vibration material arranging mechanism located at the top, a material guiding pipe is installed at the bottom of the storage box, a fan-shaped notch is formed in the top of the base, a fan-shaped collecting box is arranged in the fan-shaped notch, three supporting rods are arranged on the side of the base, and material guiding grooves are formed in the tops of the three supporting rods. The three material guide grooves are matched with the three vibration material arranging mechanisms. Through multi-stage spiral vibration and self-recovery coupling, combination of high-precision continuous screening, magnetic suction sealing and intelligent monitoring is achieved, the bottleneck of a rapid maintenance technology is broken through, a vibration transmission path is optimized, balance of high efficiency and long service life is achieved, and modular extensible design is achieved.
Owner:DALIAN LATEX CO LTD