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Optimization operational method based on energy consumption analysis for power plant and system thereof
InactiveCN101893877AAchieve high accuracyAccurate analysisTotal factory controlProgramme total factory controlData displayPower station
The invention discloses an optimization operation method based on energy consumption analysis for power plant and a system thereof. The method includes the following steps: a data acquisition subsystem acquires real-time operational data and carries out pre-processing on the specific real-time data; a data processing subsystem analyzes and calculates the real-time data, so as to obtain the real-time energy consumption index under the current working condition, the real-time energy consumption index under the current working condition is compared with the energy consumption index under the corresponding working condition stored in an optimal working condition database, comparison result is output to a data display subsystem, and meanwhile if the real-time energy consumption index obtained by calculation is superior to the optimal energy consumption index under the corresponding working condition, the current real-time working condition is stored to be corresponding optimal working condition; and the data display subsystem displays the real-time energy consumption index under the current working condition and the comparison result of optimal energy consumption indexes under the corresponding working conditions. The method of the invention can more accurately analyze various energy consumption differences of power plant and the reason of exceeding of energy consumption difference, and a reliable optimization scheme is provided.
Owner:国家能源集团江西电力有限公司九江发电厂
Energy sources regeneration of urban domestic garbage and non-waste comprehensive utilization processing technique
InactiveCN101433904AEffective generationAchieve conversionWaste processingSolid waste disposalFiltrationFuel oil
The invention relates to a manufacturing technique for energy regeneration and non-waste comprehensive utilization of municipal domestic waste, which is characterized by comprising the steps of waste classification, pretreatment and treatment of nonmetallic inorganic substances, schizolysis, filtration and reforming of organic substances, synthesis of fuel oil and treatment of organic substance byproducts. The manufacturing technique completely treats waste, has no secondary pollution during the whole treatment, and really realizes complete conversion and utilization of the waste. When the technology is used for treating organic substance waste and so on, including organic substance parts of the municipal domestic waste and various animal and plant waste, not only the environmental problem caused by the municipal domestic waste and the waste problem of the waste can be solved but also energy and slow release fertilizer which returns to earth can be efficiently generated, so that green circulation of renewable energy resources is realized. The applied proposal has reasonable energy consumption in the whole process, has no pollution, has controllable products, high output value and stable and reliable sources of raw materials, and realizes sustainable development.
Owner:深圳开普蓝生能源环保有限公司
Method for preparing waterborne polyurethane emulsion with high solid content
The invention discloses a method for preparing a waterborne polyurethane emulsion with high solid content. An existing preparation method has a limited promotion effect on the solid content of the waterborne polyurethane emulsion. Waterborne polyurethane emulsion particles with high solid content have core-shell structures with different hydrophilic properties. The preparation method of the waterborne polyurethane emulsion particles comprises the steps of dehydrating polymer polyol; enabling the dehydrated polymer polyol to react with diisocyanate, a hydrophilic chain extender and a micro-molecular chain extender to obtain a viscous pre-polymer A; uniformly mixing the pre-polymer A and a pre-polymer B which does not contain hydrophilic monomers, or contains fewer hydrophilic monomers, and is synthesized according to the same step; neutralizing by adding a neutralizer; dispersing into deionized water under high-speed stirring; performing chain extension with a subsequent chain extender to obtain the waterborne polyurethane emulsion with the high solid content. The waterborne polyurethane emulsion with high solid content has the advantages of thin hydration layer, low viscosity, good stability and high solid content; the preparation method of the waterborne polyurethane emulsion with high solid content has the advantages of unlimited formulas and raw materials, wide adaptability, simple and feasible process and strong controllability.
Owner:HANGZHOU TRANSFAR FINE CHEM CO LTD +1
Driving method, on-vehicle driving end, remote driving end, equipment and storage medium
ActiveCN107589745AReduce the difficulty of remote operationImprove securityExternal condition input parametersInput/output processes for data processingEngineeringVehicle driving
Owner:BOE TECH GRP CO LTD
Path planning system and method for overtaking vehicle on adjacent lane in single-lane automatic drive mode
ActiveCN106627582AAvoid panicAvoid dangerAnti-collision systemsExternal condition input parametersComputer moduleEngineering
The invention discloses a path planning system and method for overtaking a vehicle on an adjacent lane in a single-lane automatic drive mode. The system comprises a camera, a millimeter-wave radar unit, a central decision-making module and an actuating mechanism. The millimeter-wave radar unit is used for detecting whether there is a vehicle or not in the lane adjacent to the own vehicle; the camera is used for obtaining lane line information of the own vehicle, when the millimeter-wave radar unit detects that there is a vehicle ahead in the adjacent lane, the lane line information of the own vehicle is combined with the information detected by the millimeter-wave radar unit, and position information of the vehicle ahead in the adjacent lane is recognized, and the camera is connected with the millimeter-wave radar unit; the central decision-making module plans a running path according to the lane line information of the own vehicle and the position information of the vehicle ahead in the adjacent lane, and the central decision-making module is connected with the camera and the millimeter-wave radar unit; and the actuating mechanism conducts automatic driving according to the running path given by the central decision-making module and is connected with the central decision-making module. By the adoption of the system and method, traffic safety is guaranteed, and comfort is improved.
Owner:CHONGQING CHANGAN AUTOMOBILE CO LTD
Modular hovercar, hovercar system and hovercar sharing method
ActiveCN107627945AEasy transferArrive quicklyLaunching/towing gearRoad vehicles traffic controlModularityAirplane
A modular hovercar comprises a car body and a plane body, wherein the car body comprises a chassis, a first seat cabin and a parking platform; the parking platform is used for parking the plane body;the plane body comprises a second seat cabin and a flight mechanism; the plane body can perpendicularly land on the parking platform and is connected with the car body by a lock catch; and the plane body can take off vertically from the parking platform. The invention further discloses a hovercar system and a hovercar sharing method.
Owner:ZHEJIANG GEELY HOLDING (GROUP) CO LTD
AHP (Analytic Hierarchy Process) based assessment method of teaching quality of fuzzy comprehensive remote education
InactiveCN101937554AImprove propertiesSolving Quantitative ProblemsData processing applicationsResearch questionsQuality assessment
The invention discloses an AHP (Analytic Hierarchy Process) based assessment method of the teaching quality of fuzzy comprehensive remote education, comprising the following steps of: determining index weight by applying AHP; and determining a total assessment result by applying a fuzzy comprehensive assessment method. A method for determining the index weight by applying the AHP comprises the following steps of: establishing a hierarchical structure of a researched problem; judging a matrix by determining paired comparison; carrying out hierarchical single sequencing; carrying out hierarchical total sequencing, and calculating the combinational weight of all elements of a same hierarchy; and carrying out consistency check. The assessment method of the teaching quality of quantitative remote education carries out the data processing by establishing a fuzzy comprehensive assessment model based on the AHP, introducing a theory into the assessment of the teaching quality of the remote education, determining the weight of assessment factors by using the AHP and then establishing a mathematical model by using a fuzzy comprehensive assessment method, thereby transforming the assessment problem into the multiplication problem of the fuzzy matrix for processing.
Owner:XIDIAN UNIV
Method for preparing bis cyclohexane monomer liquid crystal using grignard reaction
InactiveCN1962580AAvoid drop in yieldLow costLiquid crystal compositionsHydrocarbon from oxygen organic compoundsGrignard reactionStructural formula
The invention discloses a preparing method of bicyclohexane monomer LCD in the monomer LCD preparing technical domain, which utilizes Grignard reaction to prepare the product with structural formula as graph I and synthetic feature route as graph II, wherein R1 and R2 is C2-C10; R3 is C1-C9 straight-chain alkyl; X is Cl or Br or I; A is C2H4 or cyclohexane; n is 0 or 1.
Owner:VALIANT CO LTD
Projected capacitive touch screen
InactiveCN101571778AReduce scan timeImprove signal-to-noise ratioInput/output processes for data processingHigh volume manufacturingTouchscreen
The invention relates to a projected capacitive touch screen, which can greatly shorten scanning time and improve signal-to-noise ratio, and has accurate touch and sensitive response. The projected capacitive touch screen comprises a conductive layer covered on a substrate, the conductive layer comprises electrode strips, and each electrode strip is connected with more than two conducting wires which are connected with an external circuit. As a preferable mode, two ends of each electrode strip are connected with a conducting wire respectively. The substrate can be made of known various materials, preferably, the substrate is a membrane. By the projected capacitive touch screen, the problem that the face resistance value is overlarge when an ITO conductive layer uses the membrane as the substrate at present is well solved, the problems that the touch of the projected capacitive touch screen of an ITO membrane structure is inaccurate and the response is not sensitive are effectively solved, the dependency on raw materials is reduced, the material selection range of the projected capacitive touch screen of the ITO membrane structure is enlarged, and the projected capacitive touch screen of the membrane structure is feasible to be produced on a large scale.
Owner:NANJING WALLY ELECTRONICS TECH
Service management method for Gbit passive optical network
ActiveCN101192886ARealize unified managementUnified management to avoidMultiplex system selection arrangementsElectromagnetic transmissionGigabitOptical line termination
The invention discloses a service management method used for a gigabit passive optical network. Step S102, the network administrator configures the service attribute for the service supported by an optical network unit / optical network terminal; Step S104, an optical line terminal receives the service attribute so as to acquire the service type supported by the optical network unit / optical network terminal when the optical line terminal is connected to the optical network unit / optical network terminal; and Step S106, if the optical line terminal supports the service, then the creating is executed and the correlation between various management entities are established. In a GPON system, a simple and practical service management method for managing all the ONU / ONT services through the OMCC channel and the standard MIB object at the OLT side, simplifying the complicated GPON service and uniformly managing various service types of various ONUs / ONTs is given.
Owner:ZTE CORP
Method for positioning portable communication device
InactiveCN101373215ASmall margin of errorHigh precisionRadio/inductive link selection arrangementsSatellite radio beaconingCommunicator deviceEmbedded system
A method for positioning a portable communication device, which adopts a server device to position the portable communication device, comprises the following steps: firstly, the server device receives the identification data and the signal intensity of a base station, which is detected by the portable communication device; the server device determines the regional characteristics of the region, in which the portable communication device is currently positioned, based on the identification data and the signal intensity of the base station; and then, the server device calculates the positioning coordinate, at which the portable communication device is positioned, and regulates the positioning coordinate based on the regional characteristics, thereby greatly improving the positioning accuracy.
Owner:INVENTEC(NANJING) TECH CO LTD
Fan key part fault diagnosis method
The invention relates to a fan key part fault diagnosis method, which comprises the steps of obtaining an operation monitoring record and a fault record of an SCADA system, and determining an experiment data set; preprocessing the experimental data set, and encoding the preprocessed fault data and normal data; carrying out stratified sampling on the preprocessed experimental data set, calculatingthe weight of each observation characteristic parameter in the SCADA system in fault multi-classification by utilizing a ReliefF algorithm, screening out the observation characteristic parameters withrelatively high relevancy, and updating the experimental data set; dividing the updated experimental data set into a training set and a test set, inputting the training set into an XGBoost model fortraining, determining an optimal target function of XGBoost, and optimizing the XGBoost model; and inputting the test set data into the optimized XGBoost model, and performing fault multi-classification test on the test set data. The method can be adjusted according to actual faults in recorded data of the SCADA system, and is more feasible, simple and high in fault recognition accuracy.
Owner:SHANDONG UNIV
Method for simulating fluctuating wind speeds on basis of data drive
InactiveCN104899446AConvenient modeling functionEasy to operateBiological neural network modelsSpecial data processing applicationsLeast squares support vector machineData-driven
The invention provides a method for simulating fluctuating wind speeds on the basis of data drive. The method includes numerically simulating fluctuating wind speeds of 20 simulation points of super high-rise buildings by the aid of an AR (auto-regression) process to obtain sample data; searching the optimal parameters of LS-SVM (least squares support vector machine) models by the aid of PSO (particle swarm optimization) by means of interpolating, learning and training to minimize prediction errors of the models and building the PSO-LSSVM models by the aid of the optimized parameters; predicting the fluctuating wind speeds of intermediate layers by the aid of fluctuating wind speed samples of upper and lower layers, evaluating the fluctuating wind speeds of the intermediate layers by the aid of evaluation indexes which are average errors, root-mean-square errors and relevant coefficients, and comparing the fluctuating wind speeds of the intermediate layers to BP (back propagation) neural networks and results obtained by the aid of standard SVM data drive technologies.
Owner:SHANGHAI UNIV
Train working diagram real-time adjustment method and system
InactiveCN110775112ARealize automatic adjustmentFeasibleRailway traffic control systemsTime rangeCollision detection
The embodiment of the invention provides a train working diagram real-time adjustment method and system. The method comprises the following steps that firstly, time reporting information of a target train is acquired, and a train working diagram is updated, wherein the time reporting information comprises a time reporting moment and a time reporting position; then a current train number plan of the target train is adjusted when the time reporting position is not the destination of the current train number plan; and finally, when the time reporting position of the target train is the destination of the operation plan of the target train, collision detection and repair between the target train and an adjacent train are carried out, and a novel train working diagram is generated. According tothe method, automatic adjustment of the train working diagram can be realized, and it is ensured that the obtained novel train working diagram is feasible; and moreover, adjusting is carried out within a certain time range through the method, and only the current time reporting train is adjusted at a time, so that the automatic adjustment of the train working diagram has real-time performance.
Owner:通号城市轨道交通技术有限公司
Method used for realizing blade fatigue crack detection through static blade displacement detection
ActiveCN105352713ARealize identificationFeasibleMachine part testingMaterial analysisStress distributionCentrifugation
The invention relates to the rotation machinery / blade detection technology field, realizes detection on a health state of a blade under extreme work environments, e.g., high temperature, high pressure, high centrifugation rotation speed, and so on, carries out fault diagnosis and realize identification on a crack blade at an early period of blade crack generation. The method comprises steps that, 1, finite analysis software Ansys1 is utilized to analyze the rotor blade; 2, modal simulation for the blade is carried out under a static state; 3, the blade is loaded with certain aerodynamic force in the Ansys software for analyzing stress distribution and deformation; 4, a model is established for the crack blade; 5, deformation of the crack blade in a certain rotation speed and at a specific depth is analyzed; and 6, vibration curves of a normal blade and a crack-adding blade in the work state are compared. The method is mainly applied to blade detection.
Owner:善测(天津)科技有限公司
Non-contact type water soaked ultrasonic detection method and apparatus for detecting cracks in pumping rods
InactiveCN1447115AShorten the lengthFeasibleMaterial analysis using sonic/ultrasonic/infrasonic waves
An uncontacted soaking supersonic crack detection method used in testing beam-pumping cracking characterizes in soaking supersonic probe and being tested beam-pumping in water in which the probe, the beam and wax wiper to not contact with each other in a gap for 2mm at least between the probe and the wax wiper, the beam rotates by itself and probe moves along the beam shaft to finish the test to the beam-pumping. The special device is composed of a probe moving unit, beam-pumping supporting unit, test-cracking operation platform, crack monitor alarm and a digit recorder.
Owner:INST OF METAL RESEARCH - CHINESE ACAD OF SCI +1
Method for preparing biomass fuel by utilizing processing residua of cassava
InactiveCN102559324ASolve the problem of pollution controlBroad space for social needsBiofuelsSolid fuelsSocial benefitsResource development
The invention belongs to the field of the preparation of biomass fuel, and in particular relates to a method for preparing biomass fuel by utilizing processing residua of cassava. The method comprises the following steps of: dehydrating the processing residua of the cassava until the content of moisture is between 50 and 70 percent, and drying until the content of the moisture is below 45 percent to obtain the biomass fuel. According to method, the processing residua of the cassava can be used as the biomass fuel, and a technical path for realizing the purpose, namely the processing residua of the cassava can be used as the biomass fuel, industrially on a large scale is provided to point out a direction for solving the problem of pollution regulation of the processing residua of the cassava fundamentally, so by the method, environmental pollution can be avoided effectively, the resource development and utilization of waste residues are realized, and obvious economic and social benefits are produced.
Owner:GUANGXI LIYUANBAO SCI & TECH
Heating furnace temperature control method based on simulation model
ActiveCN106636606AEasy to controlReduce oxidation burnFurnace typesHeat treatment process controlTemperature controlFurnace temperature
The invention relates to the technical field of control over metallurgical heating furnaces and discloses a heating furnace temperature control method based on a simulation model. The heating furnace temperature control method based on the simulation model comprises the following steps that (1) mechanism modeling is carried out according to the principle of heat convection inside a heating furnace, and a steel billet temperature change model is created; (2) the final discharging billet temperature of each single steel billet is worked out based on the steel billet temperature change model of the step (1), and compared with the set discharging billet temperature, and the adjustment quantities of each single steel billet for the furnace temperature set values of different heating sections are finally determined according to the self-optimization function of a steel billet temperature compensation module; (3) through combination of the quantity and types of the steel billets in each heating section and the feeding billet temperature of each steel billet with the weight coefficients of the different types of steel billets, a steel billet gathering module works out the final adjustment quantity of the furnace temperature set point of each heating section, and outputs the final adjustment quantity to an actuating mechanism; and (4) related parameters in the simulation model are adjusted according to the deviation between the actual discharging billet temperature and the set value, and accordingly the whole simulation model achieves the real-time online function.
Owner:北京和隆优化科技股份有限公司
Island micro power grid probabilistic load flow analytic calculation method
ActiveCN107846024ASimplify the classification processSimplify the programming processAc networks with different sources same frequencyComplex mathematical operationsMicrogridEngineering
The invention provides an island micro power grid probabilistic load flow analytic calculation method. The calculation method is provided for calculating an operation state of an island micro power grid including intermittent DG such as photovoltaic electricity, wind power and the like; loads of the island micro power grid fluctuates randomly. A conventional island micro power grid steady state load flow analysis method is mainly based on load flow calculation, a load flow result of only a single operation point can be obtained, research on probabilistic load flow calculation is only based ona simulation method which requires computational statistics on a large amount of samples so as to obtain a probabilistic load flow result, online analysis can be adversely affected due to long computation time, and correlation of DG contribution in the micro power grid is mostly not taken into consideration. To overcome the above limitations, the invention provides the island micro power grid probabilistic load flow analytic calculation method via which rapid island micro power grid probabilistic load flow calculation can be realized, requirements for engineering accuracy can be met, and the method disclosed in the invention can be used for on-line analytical application.
Owner:XIAMEN UNIV TAN KAH KEE COLLEGE
Trajectory clustering method and device, and storage medium
ActiveCN110826594AImprove clustering efficiencyQuick calculationCharacter and pattern recognitionPattern recognitionComputer vision
A trajectory clustering method comprises the steps of acquiring a target trajectory set, and the target trajectory set comprises a plurality of trajectories; dividing the tracks in the target track set according to the position data of each track in the target track set to obtain a plurality of target track subsets; respectively calculating the similarity between different tracks in each target track subset; and according to the similarity between different trajectories in each target trajectory subset and a preset similarity threshold, clustering the trajectories in each target trajectory subset to obtain a clustering result. According to the method, the tracks in the target track set are divided into the corresponding different target track subsets according to the position data of the tracks in the target track set. When trajectory clustering is carried out on different target trajectory subsets, other trajectories except the target trajectory subsets do not need to be considered, the trajectory similarity can be quickly calculated, and the discovery overhead of similar trajectories is reduced, so that the overall calculation overhead of trajectory clustering is reduced.
Owner:CHENGDU HUAWEI TECH
Soft certification anti-false method based on graphic code primary and secondary signet series information association mechanism
InactiveCN1570962AGood choiceEasy to implementUser identity/authority verificationCo-operative working arrangementsGraphicsHuman sense
Owner:中国科学院成都计算机应用研究所
Method and system for issuing digital menu
InactiveCN103020875AFunction increaseLow costData processing applicationsComputer scienceInformation density
The invention discloses a method and a system for issuing a digital menu. The method comprises steps of collecting the information and coding the information. The system comprises an information collecting unit and an information coding unit. The digital menu is integrated to a two-dimension code mark which is high in information density and easy to spread, a user can conveniently update the menu which can be completed by an intelligent cooking device in accordance with requirements, the function of the intelligent cooking device is expanded, the user feels convenient, the system can use technologies such as the prior device, relative coding and transmission communication, the cost is low, the practicability is achieved, the two-dimension code mark which is generated is high in information density and easy to spread, the intelligent cooking device can obtain the digital menu by reading the two-dimension code mark and the function is expanded.
Owner:ZHUHAI UNITECH POWER TECH CO LTD
Parameter recognition method of automobile collision wave form features
The invention discloses a parameter recognition method of automobile collision wave form features, which relates to the technical field of automobile collision safety. The method comprises the following steps of: collecting automobile body accelerating speed information data from a system for collecting automobile collision test data and obtaining an accelerating speed A (t); and recognizing wavepeak points and wave hollow points in the accelerating speed A (t). According to the wave features of the collision accelerating speed wave form, the invention provides a method for recognizing wave peaks and wave hollows in a collision accelerating wave form, which is a technical means for analyzing wave form features in the collision process. An analysis method is accordingly provided for the optimization design of the automobile body structure. The application value lies in that the collision process is refined and decomposed into a plurality of data arrays consisting of wave peaks and wave hollows, and corresponding time and accelerating speed parameters are calculated. The method is established on the basis of a fixed calculation procedure and has engineering repeatability and feasibility for being realized on a computer. The work efficiency is increased, and the labour intensity is reduced.
Owner:CHINA AUTOMOTIVE TECH & RES CENT +1
Dialogue intention recognition method and device, equipment and storage medium
PendingCN108647239AReduce labor costsFeasibleNatural language data processingSpecial data processing applicationsChatbotFeature extraction
The invention provides a dialogue intention recognition method and device, equipment and a storage medium. The method comprises the following steps: acquiring dialogue information, and performing wordsegmentation on the dialogue information to obtain word segmentation information; performing feature extraction on the word segmentation information to obtain first feature information; inputting thefirst feature information into at least two primary models for training and prediction to obtain a plurality of primary prediction values; splicing the primary prediction values to obtain second feature information; and inputting the second feature information into a secondary model for training and prediction to obtain a secondary prediction value and a recognition result. Through fusion of at least two primary models and one secondary model, classification and recognition of the dialogue intention are performed on the feature information extracted according to the dialogue information, so that a chatting robot can make accurate and intelligent responses feasibly according to the recognized dialogue intention, thereby lowering the labor cost.
Owner:SF TECH
Method for improving distribution uniformity of reinforced phase in silver metal oxide electric contact material
InactiveCN108950257AImprove uniformityIncrease the concentration of vacanciesElectricitySmelting process
The invention discloses a method for improving distribution uniformity of a reinforced phase in a silver metal oxide electric contact material. A reinforced phase element is prepared into powder, a powder spraying device sprays the reinforced phase element powder into a silver solution through inert gas, vacancy concentration of the reinforced phase element is improved, the relative motion velocity of the reinforced phase element and the silver solution is increased, melting and diffusion velocities of the reinforced phase element in the silver solution can be increased effectively, and distribution uniformity of the reinforced phase in the silver substrate in the silver metal oxide electric contact material is finally improved. The technology can be applied to the production process of all silver metal oxide electric contact materials adopting internal oxidation technology or atomization technology, compared with the traditional internal oxidation technology and atomization technology, the method can significantly shorten uniformization time of the silver alloy smelting process, the volatilization amount of the low-melting-point reinforced phase element in the smelting process isreduced, and environment protection treatment cost is lowered.
Owner:FUDA ALLOY MATERIALS
SoC chip-based deep neural network embedded realization method
InactiveCN108171321ATo make up for the shortcomings of weak scheduling abilityIncrease flexibilityNeural architecturesPhysical realisationGlobal schedulingProgrammable logic device
The invention belongs to the field of airborne intelligent computing, and provides an SoC chip-based deep neural network embedded realization method. The method is realized based on an SoC chip; a neural network main program is realized in a processor core and finishes a global scheduling task; a computing-intensive part is realized in programmable logic and finishes a parallel computing task; andthe two parts perform control instruction and state information exchange through an on-chip high-speed bus to realize cooperative work of a processor and the programmable logic. According to the method provided by the invention, the processor core in an SoC is used for executing an overall scheduling task, so that the dynamical reconfiguration characteristic of an FPGA is better utilized and thenetwork flexibility is improved.
Owner:XIAN AVIATION COMPUTING TECH RES INST OF AVIATION IND CORP OF CHINA
Prediction control method and system for magnetic levitation system
ActiveCN109991850ANo loss of precisionFeasibleAdaptive controlGaussian radial basis functionNon linear dynamic
The invention discloses a prediction control method and system for a magnetic levitation system. By historical data of the magnetic levitation ball system and through adopting a system identificationmethod, an autoregressive model which takes a Gaussian radial basis function network as a coefficient and has an exogenous variable is established to describe nonlinear dynamic characteristics betweenan input voltage of an electromagnetic winding and a position of a steel ball. An ARX model coefficient is fit by an RBF neural network, so that an RBF-ARX model can well depict the nonlinear dynamiccharacteristics of the magnetic levitation ball system. Then, on the basis of a principle of a predictive functional control algorithm, a structure of a control input is determined so as to completerolling optimization and error correction. The predictive functional control algorithm has higher tracking capacity and higher robustness than PID control, and has a smaller online calculation amountand a higher control speed than conventional model prediction control; and when a system set value is a step signal, the control method can implement unbiased tracking.
Owner:CENT SOUTH UNIV
Method for utilizing television frequency band white space spectrums in Internet of vehicles
InactiveCN105025578AOvercoming space-time varying propertiesImprove distributionTransmissionWireless communicationTime domainFrequency spectrum
The invention discloses a method for utilizing television frequency band white space spectrums in the Internet of vehicles, and utilizes the television frequency band white space spectrums to provide spectrum resource allocation of an Internet data transmission service for vehicles. The method includes resource modeling based on a spectrum geography database and resource allocation with maximized handling capacity, resource modeling based on the spectrum geography database specifically represents variation characteristics of resources in the form of space-frequency resource blocks, guaranteeing feasibility of resource allocation, resource allocation with maximized throughput allocates a subchannel to vehicles in a usable range of the subchannel according to a fixed time period through time domain and frequency domain division, and the objective of maximizing network throughput is guaranteed at the same time.
Owner:SHANGHAI JIAO TONG UNIV
Method for dispatching public transport vehicles
InactiveCN102542791AImprove practicalityImprove production efficiencyRoad vehicles traffic controlResting timeRest time
The invention discloses a method for dispatching public transport vehicles. The method comprises the following steps of: generating a block collection of departure time point sequence of a public transport vehicle corresponding to each initial departure time point according to a departure time table, the rest time of a driver, the maximum waiting time and the longest working time; generating N chromosomes with finite lengths, and making each chromosome correspond to one initial departure time point; initializing the N chromosomes to obtain the N chromosomes after initializing; making one initial departure time point in the chromosome correspond to one block; intersecting and mutating the current N chromosomes successively, and selecting the N chromosomes after mutating and the N chromosomes before intersecting to obtain the N chromosomes after selecting; intersecting, mutating and selecting to preset times so as to obtain an optimal chromosome; and regulating the optimal chromosome, dispatching the public transport vehicles according to each departure time point, cover times corresponding to the departure time point and the block after regulating. According to the method for dispatching the public transport vehicles, disclosed by the invention, the practicability and the generating efficiency of a public transport vehicle dispatching scheme can be increased.
Owner:BEIJING UNIV OF POSTS & TELECOMM
Fuel oil cleaning agent and preparation method thereof
InactiveCN101139534AFeasibleGood social promotion valueLiquid carbonaceous fuelsFuel additivesEthylenediamineFuel oil
The invention relates to a fuel-cleaning agent and a preparing method for the agent, which comprises by weight water 5 portions, triethanolamine 3 portions, methanol 13 portions, n-butanol 16 portions, ethylene glycol monobutyl ether 39 portions, ethylenediamine 7 portions, polyoxyethylene nonyl phenyl (4) ether 7 portions, fatty alcohol (3) ether 4 portions, dodeca ammonia poly oxy ethylene ether 3 portions, and oil thanol amide 3 portions. The agent is prepared by the following procedures: adding the 5 portions of water into a vessel; adding 39 portions of ethylene glycol monobutyl ether, 3 portions of triethanolamine, 12 portions of methanol, 16 portions of n-butanol while agitating; adding 7 portions of polyoxyethylene nonyl phenyl (4) ether after agitating, 3 portions of fatty alcohol (3) ether, 3 portions of dodeca ammonia poly oxy ethylene ether, and 7 portions of ethylenediamine; adding 3 portions of oil thanol amide after reaction; agitating, and keeping still. The invention has an obvious and rapid cleaning speed, is good for reducing oil consumption, improving fuel utilization, and reducing the emission of harmful substance in the tail gas, and is energy saving and environmental friendly.
Owner:陶冶
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