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32results about How to "Improve effective output" patented technology
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Control method and control device for guide vane opening of water turbine
ActiveCN108443057AImprove accuracyGuaranteed stabilityHydro energy generationMachines/enginesWater turbineServomotor
The invention discloses a control method and control device for the guide vane opening of a water turbine. Integral output amplitude limits (DB1,DB2) are determined through a water turbine speed governor disturbance test; servomotor stroke parameters are collected, and a feedback value H is determined according to the servomotor stroke parameters; a guide vane opening fixed value M is input, and acontrol voltage output value u is determined through a series integral control standard; the feedback value H and the guide vane opening fixed value are substituted into an integral zero clearing control standard for judgment, and whether integral zero clearing is needed or not is determined according to a judgment result; and the control voltage output value u is transmitted to a data transmission control unit, and a servomotor is moved. Thus, effective output of control voltage can be improved, and when the output voltage is too small, the accuracy of guide vane opening control can be improved, the stroke speed of the servomotor is controlled, and the stability of the guide vane opening is ensured.
Owner:YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
Method and system for realizing dynamic production scheduling in energetic material production process
PendingCN111062535AScheduling Decision OptimizationOptimizing Production Scheduling DecisionsForecastingResourcesOperation schedulingCompletion time
The invention discloses a method for realizing dynamic production scheduling in an energetic material production process. The method comprises the following steps: selecting a production scheduling task and determining the batch number of products, the processing time of each process of the products and the type number of equipment required by the process in the production scheduling task; identifying bottleneck equipment in the scheduling task by adopting TOPSIS based on sensitivity analysis and a comprehensive evaluation method; and adopting a genetic algorithm to obtain a production scheduling scheme with the least completion time. The invention further discloses a system which comprises a data management module, an operation scheduling module, a scheduling simulation module and a usermanagement module. According to the method, the energetic material scheduling problem is solved by adopting an improved genetic algorithm based on bottleneck information, and the processing sequence of the products is determined and the given optimization target is completed by reasonably distributing production resources and processing equipment under the condition of meeting constraint conditions, so that the production efficiency is improved, the production cost is reduced, and the enterprise competitiveness is improved.
Owner:INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
Method for preparing light emitting element
ActiveCN104393125AEnhanced buffer rangeImprove warpageSemiconductor devicesGallium nitrideThermal treatment
The invention discloses a method for preparing a light emitting element. The method comprises the following steps: growing gallium nitride on a flat sheet or a graphic substrate which is plated with AIN, and further performing annealing treatment in the presence of H2 or combined thermal treatment in the presence of H2 and NH3. Therefore, the problem of stress of a buffer material is changed, the epitaxial wafer warping caused by the stress is alleviated, the epitaxial quality of the light emitting element is improved, and the light emission efficiency of the light emitting element is improved.
Owner:ANHUI SANAN OPTOELECTRONICS CO LTD
Automobile exhaust comprehensive utilization energy saving system
InactiveCN103410573AIncrease output powerImprove effective outputInternal combustion piston enginesExhaust apparatusElectricityTemperature control
The invention discloses an automobile exhaust comprehensive utilization energy saving system which mainly comprises a radial-flow turbine, a gearbox, a generator and a cooling water circulation water pump. The radial-flow turbine is connected with the gearbox through a shaft, and the gearbox is respectively connected with the generator and the cooling water circulation water pump. The generator is connected with one end of an electromagnetic clutch through a coupler, and a fan is directly connected with the other end of the electromagnetic clutch through a shaft. The electromagnetic clutch is connected with a temperature control circuit and is controlled by the temperature control circuit. According to the automobile exhaust comprehensive utilization energy saving system, automobile exhaust energy is used for driving the radial-flow turbine, part of power outputted by the radial-flow turbine is used for driving the cooling water circulation water pump and the fan, and the other part of the power outputted by the radial-flow turbine is used for generating electricity. Meanwhile, output work of an engine is improved, and the aim of comprehensively utilizing the energy is achieved. The automobile exhaust comprehensive utilization energy saving system is simple in structure, strong in applicability, low in cost and easy to popularize.
Owner:GUANGXI UNIV
Method for producing fermented mixed feed for birds using EM original dew
InactiveCN101352199AGood palatabilityPromote crude fiber conversionFood processingAnimal feeding stuffChemistryDecomposition
The invention discloses a method which uses original liquid of EM to produce bird species ferment mixed feed and comprises steps that (10) original liquid of EM, brown sugar and water are well blended, placed into a sealed container and put to prepare EM original liquid fermentation; (2) rice bran, bran, and cut maize are blended to prepare mixture, and then the mixture is added with the EM original liquid fermentation to be well blended; fermented and cultured for 36-96 hours to prepare fermentation fodder; (3) the fermentation folder, bean cake, bran, fish meal, bone meal, shell power and salt are blended to prepare bird species ferment mixed feed which is produced by the EM original liquid. The fodder prepared by the method of the invention can promote the transformation of crude fiber, promote the proteinic decomposition, replace conventional protein raw materials, facilitate aquaculture industry, substantially increase the nutrition value of the fodder, increase the digest and absorption ability of birds, reduce plant disease, save prescription charge, reduces residue, eliminate fetor of hurdle house, implement zoology breeding, reduce the fodder cost and increase effective output.
Owner:TIANJIN SHENGJI GRP CO LTD
Positive-Displacement Engine
InactiveUS20110192370A1Efficient amplificationImprove the state of stressInternal combustion piston enginesEngine controllersEngine efficiencyFuel efficiency
The most difference for one kind of the positive-displacement engine from capacity-invariable engine is, the CVE has double pistons interlinked mutually in every cylinder. Inner piston connects with the piston pin by the connecting rod. Outer piston with a ring sits on inner piston supported by the spring. The characteristic of this engine is: Every stroke volume changes diversity. In exhaust stroke, outer piston gets to the tiptop of the cylinder, waste gas almost discharges (exhaust ratio can be to 95%˜98% in theory), compression ratio is improved (≧12); In intake stroke, outer piston continues moving by the inertia at the end of the intake stroke, the air intake volume increases. So it realizes the automatic supercharging and the fuel efficiency and emission have improved. Since outer piston has the effect of storing energy, the peak pressure and the speed of the pressure raising have been reduced. Thereby, the force on the structure is lower down and the engine weight could be lightened, the smoothness of operation is also improved. Also the peak pressure shifts to right, the torque output increases and engine efficiency is improved. There are great performance improvements of this positive-displacement engine then capacity-invariable engine.
Owner:WANG XIPING
Energy feedback type magneto-rheological-air floating combined performing device
ActiveCN104763703AAchieve zero frictionAchieve energy saving effectFluid-pressure actuator componentsMagnetic currentActuator
The invention relates to the liquid transmission and movement control technology, and in particular relates to an energy feedback type magneto-rheological-air floating combined performing device which is independent, adjustable in rigidity, controllable in damping and compact in structure. The device comprises a magneto-rheological damper for generating magneto-rheological effect to produce controllable damping, an energy feedback assembly for generating electricity energy during movement and feeding back to a driving power supply of the device, a sliding guide rail assembly for enabling relative sliding of the magneto-rheological damper and the energy feedback assembly, a friction-free cylinder for generating air floating effect, and a medium connecting assembly for integrally coupling all parts. According to the device, the air floating effect, air / a linear bearing are utilized to achieve friction-free performance and adjustable rigidity, and the output force and the response capacity of the performing device can be improved; the magneto-rheological effect enables quick response and adjustable damping, so that the stability and interference resistance of the positioning movement can be improved; the energy consumption can be reduced through energy feedback, and thus the energy saving efficiency of the system can be increased. The device is applied to the condition requiring compact structure, high speed, high precision and quick response.
Owner:ZHEJIANG UNIV
Power transmission system of crank structure
InactiveUS20120318087A1Reduce lossesHigh torqueCrankshaftsToothed gearingsElectric power transmissionGear wheel
A crank arm of a internal combustion engine is replaced by an elliptical gear 3 and another elliptical gear 4 having the same size and shape is assembled to engage and rotate such that the positions moved by a predetermined distance along the major axes of ellipses from centers 8 and 9 of the ellipses become rotation centers 5 and 7 of the elliptical gears 3 and 4 to alternately change the distances from the rotation centers of the engaged elliptical gears to a power transmission point 6 in accordance with the direction of power transmission. The present invention provides a power transmission assembly for improve on fuel efficiency of a internal combustion engine that makes it possible to improve acceleration force and hill climbing ability by generating larger torque and to generate large effective power by reducing the loss of power.
Owner:LEE YOUNG HEE
Power conversion circuit
InactiveCN104682734AReduce wasteReduce lossAc-dc conversion without reversalAC motor controlPower flowAlternating current
A power converting circuit for supplying power to an inductive load, includes an inductance, a switching circuit and an energy saving circuit. The inductance is charged when the switching circuit is conductive and discharges energy to the energy saving circuit and the inductive load when the switching circuit is nonconductive. The energy saving circuit discharges energy to the inductive load when the switching circuit is conductive.
Owner:JOHNSON ELECTRIC SHENZHEN
High-efficiency solar photovoltaic battery pack
InactiveCN101645468AImprove effective outputImprove power generation performancePhotovoltaic energy generationSemiconductor devicesElectricityInternal resistance
The invention relates to a solar photovoltaic battery, in particular to a high-efficiency solar photovoltaic battery pack which is formed by combining a plurality of solar photovoltaic battery units for purpose of improving output power and current. The high-efficiency solar photovoltaic battery pack is characterized in that the ratio between the sum of total normal voltage V of the photovoltaic battery and total normal current I is k which is equal to or lower than 1.82 and equal to or higher than 0.55. By regulating the potential of the photovoltaic battery pack and the internal resistance value of a component system in terms of fixed ratio, the solar photovoltaic battery pack improves the effective output of rated currency and also the electric substance output of solar photovoltaic battery components with the same photic areas and the same theoretical powers to an unprecedented extreme, therefore, under the present international solar energy general technical conditions, the average conversion rate is improved from the original low efficiency of 15 percent to an efficiency as high as 100 percent, wherein the generation capability of common silicon-based batteries is improved upto 6.666 times than that of the original capability.
Owner:武湖月
Enzymatic Process for Debittering of Protein Hydrolysate Using Immobilized Peptidases
InactiveUS20100184132A1Improve effective outputFermentationPeptidasesProtein hydrolysatesCalcium alginate
Owner:SEC
System and method of reciprocating piston engine, multi-fuel piston engine
ActiveUS11078836B1Increase tangential forceReduced clearance volumeInternal combustion piston enginesOutput powerGasolineControl theory
The present disclosure relates to piston engine systems which are no longer restricted by their compression ratios. Rather, a mixture of fuel and pre-compressed air is used to complete the combustion. The pressure of the compressed air is independently controlled. As a result, the clearance volume can be reduced to less than 1 / 50 or to zero, and the piston engine systems can be used with different types of fuels, for example, gasoline, diesel, ethanol, or vegetable oils.
Owner:CANADAVFD CORP LTD
Conductive cyclic polyolefin composite material and preparation method thereof
The invention relates to a conductive cyclic polyolefin composite material and a preparation method thereof. The composite material comprises the following components in parts by weight: 80-88 parts of cyclic polyolefin nozzle crushed material,2-6 parts of super-conductive multi-walled carbon nanotubes, 1-2 parts of conductive carbon black, 5-15 parts of a toughening agent, 1-3 parts of a hyperdispersant, 0.3-0.8 part of a compatibilizer, 0.3-0.6 part of an antioxidant, 0.3-0.8 part of a heat stabilizer and 0.8-2.5 parts of liquid wax. The conductive cyclic polyolefin composite material disclosed by the invention has the characteristics of high dimensional stability, high thermal deformation, relatively high fluidity, low warping property, extremely low moisture absorption rate, stable electric conduction and static electricity resistance and the like, and can be used for electronic product shells, electronic product packaging discs, coating discs and the like. The method is suitable for continuous production, low in production cost and capable of effectively recycling the nozzle materials generated in the optical industry.
Owner:XIAMEN HUAYE PRECISE MOLD CO LTD
Breeding solid waste treatment device
InactiveCN111547971AIncrease effective outputImprove effective outputWaste water treatment from animal husbandryBiological sludge treatmentBiogasWaste treatment
The invention provides a breeding solid waste treatment device structurally comprising a feeding box, a solid waste exhaust turnover device, an exhaust pipe, an oblique flow box, a staggered flow guide block, a leading-in pipe, a lateral reinforcing rib and a culture solid waste fermentation treatment tank; the bottom end of the feeding box is welded with the leading-in pipe; the lateral reinforcing rib is fixed in the middle of the right side surface of the leading-in pipe; the oblique flow box is fixedly connected with the culture solid waste fermentation treatment tank through the staggeredflow guide block. In a state that biogas can be discharged through an outer guide insertion pipe, a suction guide disc can be started through the internal pressure difference, and joint control is carried out on a sealing sheet; therefore, external gas is input into an inner sealing slide block; up-and-down stirring of a back-turning handle is controlled through the intensity of the internal pressure of a guide mechanism, so that the back-turning handle can turn and stir internal solid waste in each use process, the effective output of biogas is increased, and the biogas production device issuitable for the solid waste treatment process of small-scale livestock breeding and can ensure sufficient biogas production.
Owner:马廷雄
Photovoltaic interconnect wire
ActiveUS20160336471A1Minimize loss current collection efficiencyEnsure conductivityWelding/cutting media/materialsPhotovoltaic energy generationSolar cellBattery bank
A photovoltaic interconnect wire includes a conductive base strip with grooves provided thereon, and the grooves are linear and / or curved strip-shaped grooves (3) arranged obliquely to a longitudinal direction of the conductive base strip. An inclination angle of 15° to 75° is present between each linear strip-shaped groove and the longitudinal direction of the conductive base strip, and between a tangent line of any point on the curve of a curved-shaped groove and the longitudinal direction of the conductive base strip. The photovoltaic soldering strip increases an output power of a solar cell assembly by increasing the total reflection proportion. It also ensures soldering fastness by adjusting flat regions of the base strip. Effective cross section loss of the conductive base strip is reduced by adjusting the angle of each groove, so as to minimize the confluence efficiency loss of the soldering strip.
Owner:FUNDANT JIANGSU ADVANCED MATERIALS CO LTD
Preparation method and preparation machine of cattle and sheep feed prepared by fermentation of potato residues and straw powder
The invention relates to a preparation method and preparation machine of cattle and sheep feed prepared by fermentation of potato residues and straw powder fermented. The preparation machine comprisesa straw crusher, a straw dust remover, a mixing mixer, a mixing hopper and a quantitative briquetting sealing packaging machine which are connected in sequence through a conveying device, and the preparation machine also comprises a first auxiliary material hopper, a second auxiliary material hopper and a potato residue hopper which are connected with the mixing mixer through the conveying device, wherein a strain spraying device is arranged in the potato residue hopper. The preparation method of the feed provided by the invention is simple and easy to implement, and potato waste residues canbe well fermented. Agricultural wastes are fully utilized as main materials, the excellent cattle and sheep feed is produced on the basis of adding a small amount of grain auxiliary materials, and onthe premise of not adding antibiotics and hormones into the feed, the feed has a high nutritional value. Through microbial fermentation treatment, the protein content of the potato residues can be greatly improved, the fiber structure of coarse fibers can be improved, and palatability of the feed is improved.
Owner:泰安市岱岳区泰峰农牧机械厂
Power transmission system of crank structure
InactiveUS8739759B2Improve abilitiesIncrease forceCrankshaftsConnecting rodsElectric power transmissionEffective power
A crank arm of a internal combustion engine is replaced by an elliptical gear 3 and another elliptical gear 4 having the same size and shape is assembled to engage and rotate such that the positions moved by a predetermined distance along the major axes of ellipses from centers 8 and 9 of the ellipses become rotation centers 5 and 7 of the elliptical gears 3 and 4 to alternately change the distances from the rotation centers of the engaged elliptical gears to a power transmission point 6 in accordance with the direction of power transmission. The present invention provides a power transmission assembly for improve on fuel efficiency of a internal combustion engine that makes it possible to improve acceleration force and hill climbing ability by generating larger torque and to generate large effective power by reducing the loss of power.
Owner:LEE YOUNG HEE
A control method and control device for guide vane opening of a water turbine
ActiveCN108443057BImprove accuracyGuaranteed stabilityHydro energy generationMachines/enginesWater turbineServomotor
The invention discloses a control method and control device for the guide vane opening of a water turbine. Integral output amplitude limits (DB1,DB2) are determined through a water turbine speed governor disturbance test; servomotor stroke parameters are collected, and a feedback value H is determined according to the servomotor stroke parameters; a guide vane opening fixed value M is input, and acontrol voltage output value u is determined through a series integral control standard; the feedback value H and the guide vane opening fixed value are substituted into an integral zero clearing control standard for judgment, and whether integral zero clearing is needed or not is determined according to a judgment result; and the control voltage output value u is transmitted to a data transmission control unit, and a servomotor is moved. Thus, effective output of control voltage can be improved, and when the output voltage is too small, the accuracy of guide vane opening control can be improved, the stroke speed of the servomotor is controlled, and the stability of the guide vane opening is ensured.
Owner:YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
A kind of preparation method of light-emitting element
ActiveCN104393125BEnhanced buffer rangeEasy to handleSemiconductor devicesGallium nitrideMaterials science
Owner:ANHUI SANAN OPTOELECTRONICS CO LTD
Product combination and scheduling optimization method under whole batch processing mode
ActiveCN110059876AImprove resource utilizationImprove effective outputForecastingResourcesBatch processingResource utilization
The invention provides a product combination and scheduling optimization method under a whole batch processing mode. The principle of the method comprises the following steps of setting initial production quantity of all products as market requirements; and searching a key chain and a key product in a scheduling scheme generated by the initial product combination, finding the product with the lowest product priority on the key chain, and continuously reducing the number of the product (if the number of the products is 0, the product with the lower priority for the same operation is searched) until a feasible production scheme is obtained. According to the method, product combination and scheduling problems are solved, the feasibility of a production scheme can be ensured, the resource utilization of an enterprise is improved, and the effective output of the enterprise is increased.
Owner:NORTHWESTERN POLYTECHNICAL UNIV
Automobile Exhaust Comprehensive Utilization Energy Saving System
InactiveCN103410573BIncrease output powerImprove effective outputInternal combustion piston enginesExhaust apparatusTemperature controlElectricity
The invention discloses an automobile exhaust comprehensive utilization energy saving system which mainly comprises a radial-flow turbine, a gearbox, a generator and a cooling water circulation water pump. The radial-flow turbine is connected with the gearbox through a shaft, and the gearbox is respectively connected with the generator and the cooling water circulation water pump. The generator is connected with one end of an electromagnetic clutch through a coupler, and a fan is directly connected with the other end of the electromagnetic clutch through a shaft. The electromagnetic clutch is connected with a temperature control circuit and is controlled by the temperature control circuit. According to the automobile exhaust comprehensive utilization energy saving system, automobile exhaust energy is used for driving the radial-flow turbine, part of power outputted by the radial-flow turbine is used for driving the cooling water circulation water pump and the fan, and the other part of the power outputted by the radial-flow turbine is used for generating electricity. Meanwhile, output work of an engine is improved, and the aim of comprehensively utilizing the energy is achieved. The automobile exhaust comprehensive utilization energy saving system is simple in structure, strong in applicability, low in cost and easy to popularize.
Owner:GUANGXI UNIV
Method for preparing circuit board and circuit board
ActiveCN109982517BImprove qualityEvenly distributedNon-metallic protective coating applicationPrinted circuit coatingPrinting inkMechanical engineering
Owner:NEW FOUNDER HLDG DEV LLC +1
Air conditioner heat exchange medium control method, device, medium, computer equipment and air conditioner
ActiveCN110686375BHigh thermal efficiencyImprove uneven distributionMechanical apparatusLighting and heating apparatusThermodynamicsEngineering
The invention relates to the field of design of air conditioners, in particular to a control method and device for a heat exchange medium of an air conditioner, a storage medium, computer equipment and the air conditioner. The control method comprises the following steps of acquiring the operating state of the air conditioner; acquiring a first pipe temperature, measured by a first temperature wrap, of each shunt pipe and acquiring a second pipe temperature, measured by a second temperature wrap, of an evaporator inner pipe on the evaporator of an indoor unit of the air conditioner after the operating state of the air conditioner reaches a preset state; and if the difference value of the first and second pipe temperatures is greater than a preset value, adjusting the opening degree of an electronic expansion valve to a preset opening, and controlling the heat exchange medium to the flow of each shunt pipe, wherein the flow difference of the heat exchange medium in each shunt pipe is ina preset range, and / or, adjusting the operating frequency of a compressor of the air conditioner to a preset frequency, and controlling the temperature of the heat exchange medium, wherein the temperature difference of the heat exchange medium in each shunt pipe is in the preset range. According to the control method, the flow and temperature of the heat exchange medium flowing to each shunt pipein the air conditioner are controlled effectively.
Owner:GREE ELECTRIC APPLIANCES INC
Brushless direct drive linear servo actuator
PendingUS20220368209A1Prolong lifeImprove reliabilityMagnetic circuit stationary partsStructural associationServo actuatorEngineering
The present disclosure provides a brushless direct drive linear servo actuator, comprising: a stator, a mover and a housing, wherein the stator is a pair of armatures arranged in mirror symmetry at both sides of the mover, the housing integrally encapsulates the stator and forms a cavity for the mover at the mover, and the mover has an output end protruding out of the housing and is linearly movable along a direction of the output end. A displacement signal emitter is provided at a side of the mover, and a signal receiver is provided within a cover arranged outside the housing on said side for detecting a displacement signal emitted by the emitter of the mover. The actuator of the present disclosure is characterized by high reliability, high accuracy and low cost.
Owner:SUZHOU FUGENA ELECTROMECHANICAL CO LTD
Epitaxial wafer applied to Micro-LED and preparation method of epitaxial wafer
PendingCN112382707AAdjust Warpage DifferenceReduced growth warpSemiconductor devicesContact layerElectron blocking layer
The invention relates to the technical field of semiconductors, and particularly relates to an epitaxial wafer applied to a Micro-LED and a preparation method of the epitaxial wafer. The preparation method is characterized by comprising the steps of 1, selecting a substrate; 2, sequentially growing a buffer layer, a stress and warping control layer, an N-type semiconductor layer, an active layer,an electron blocking layer and a P-type semiconductor layer on the substrate; 3, growing a contact layer on the P-type semiconductor layer; and 4, after the epitaxial growth is finished, performing annealing treatment on the epitaxial wafer, and then reducing the temperature of the epitaxial wafer to room temperature to finish the preparation. According to the invention, the warping performance and stress during bottom layer epitaxy can be effectively controlled, and the consistency of the edge yield and the center yield is effectively improved.
Owner:JIANGSU HUAXING LASER TECH CO LTD
High-power white light LED with good heat dissipation and manufacturing method thereof
Owner:FUJIAN CAS CERAMIC OPTOELECTRONICS TECH CO LTD
Solar cell and preparation method thereof
PendingCN114497259AImprove conversion efficiencyReduce lossesPhotovoltaic energy generationSemiconductor devicesField effectMaterials science
The embodiment of the invention provides a solar cell and a preparation method thereof, the solar cell comprises a crystalline silicon substrate, and a first tunneling film layer, a doped polycrystalline silicon layer, a first passivation layer, an anti-reflection layer and a mask layer are prepared on one surface of the crystalline silicon substrate; and a second tunneling thin film layer, a heavily doped polycrystalline silicon layer, a second passivation layer, an overweight doped polycrystalline silicon layer and a transparent conductive layer are prepared on the other surface. Good chemical passivation and field effect passivation on the surface of the doped polycrystalline silicon layer are realized by introducing the passivation layer, the loss of carriers caused by recombination on the polycrystalline silicon layer is reduced, and the effective output of photon-generated carriers is improved; through introduction of the overweight doped polycrystalline silicon layer, field effect passivation of one surface is further enhanced, certain power is provided for output of photon-generated carriers to an external circuit through potential difference values generated by different doping concentrations, effective output of the carriers is increased again, and therefore the conversion efficiency of the solar cell is effectively improved.
Owner:一道新能源科技股份有限公司
Solution to product mix optimization problem based on redistribution of remaining capacity
ActiveCN105913147BOptimal combinatorial optimization resultsHigh combinatorial optimization resultsForecastingResourcesBusiness enterpriseComputation process
Owner:NORTHWESTERN POLYTECHNICAL UNIV
Method and device for purifying aluminum nitride powder by adopting PVT method
ActiveCN114873570AImprove heating uniformityQuality improvementPolycrystalline material growthNitrogen compoundsSemiconductor technologySemiconductor
The invention belongs to the technical field of semiconductors, and relates to a device and a method for purifying aluminum nitride powder by adopting a PVT method, the device comprises a graphite crucible (1), a plurality of mounting holes (2) are arranged in the graphite crucible (1), a hard felt crucible (3) is arranged in each mounting hole (2), and a metal crucible (4) is arranged in each hard felt crucible (3). The method is realized by adopting the device, and comprises the following steps: putting the aluminum nitride powder into the device, and purifying through high-temperature impurity removal and powder grinding. By the adoption of the technical scheme, efficient impurity removal in the aluminum nitride AlN powder purification process can be achieved, and the technical effect of effective output is improved.
Owner:山西中科潞安半导体技术研究院有限公司
Surplus capability redistribution-based product combination optimization problem solving method
ActiveCN105913147AOptimal combinatorial optimization resultsHigh combinatorial optimization resultsForecastingResourcesRankingComputation process
The invention puts forward a surplus capability redistribution-based product combination optimization problem solving method which is based on a principle that a product sequence is 1, 2, . . .i, i+1, i+2, . . ., n according to priority ranking is assumed. Bottleneck resources are distributed to products according to the priority ranking, and quantities of all products are calculated; if products J are small in quantity in calculation processes, resources can be requested from preceding products X (i) to process products J, and therefore a good product combination solution can be obtained. Compared with a conventional TOCh method and a revised TOCh method, an adjustment solution via which existing product combinations are adjusted is advantageous in that enterprise resource waste can be effectively reduced, enterprise income can be increased, and effective output of an enterprise can be improved.
Owner:NORTHWESTERN POLYTECHNICAL UNIV
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