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396results about How to "The identification result is accurate" patented technology
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Power lithium battery model parameter identifying and dump energy estimating method
InactiveCN108072847AImprove estimation performanceImprove recognition accuracyElectrical testingCapacitanceElectrical battery
The invention discloses a power lithium battery model parameter identifying and dump energy estimating method. The method includes the steps of firstly, establishing a state space equation of a two-order impedance-capacitance model of a lithium battery; secondly, establishing a regression model of the relation of an end voltage and open circuit voltage and a current; thirdly, conducting parameteridentifying based on an iterative learning recursive least-squares method on the regression model; fourthly, conducting identifying based on the iterative learning recursive least-squares method on experimental data meeting the discharge current conditions in the parameter identifying process in the third step to obtain prediction errors, and conducting converging through the prediction errors toobtain a nonlinear function in parameters of the state space equation and a parameter set; fifthly, verifying the battery model precision formed by the nonlinear function and the parameter set obtained in the fourth step; sixthly, collecting current and voltage data, and estimating the dump energy through expanded Kalman filtering. The model parameter identifying precision is high, the dump energyestimation value error is small, and good application prospects are achieved.
Owner:SOUTHWEST JIAOTONG UNIV
Method and device for controlling permanent magnet synchronous motor
ActiveCN105591582AEasy to controlQuick controlElectronic commutation motor controlVector control systemsMaximum torquePermanent magnet synchronous motor
The invention discloses a method of controlling a permanent magnet synchronous motor. The method comprises the following steps: according to d-axis feedback current, q-axis feedback current, d-axis given voltage and q-axis given voltage during a permanent magnet synchronous motor operation process and the rotation speed of the permanent magnet synchronous motor, the stator resistance, the rotor flux, the d-axis inductance and the q-axis inductance of the permanent magnet synchronous motor are identified; according to the identified stator resistance, the rotor flux, the d-axis inductance and the q-axis inductance, a maximum torque per ampere (MTPA) curve for the permanent magnet synchronous motor is calculated; according to the MTPA curve, a motor parameter table is generated; and through querying the motor parameter table, control parameters of the permanent magnet synchronous motor are acquired, and according to the control parameters of the permanent magnet synchronous motor, the permanent magnet synchronous motor is controlled. The permanent magnet synchronous motor control method of the invention can improve the control accuracy and the response speed of the permanent magnet synchronous motor. The invention also discloses a device for controlling the permanent magnet synchronous motor.
Owner:BYD CO LTD
Exoskeleton type upper limb rehabilitation robot with man-machine interaction kinetic model
ActiveCN105437209AReduce usageAvoid interferenceProgramme-controlled manipulatorChiropractic devicesHuman bodyThree degrees of freedom
The invention provides an exoskeleton type upper limb rehabilitation robot with a man-machine interaction kinetic model. In the rehabilitation training process, upper limbs of a human body are regarded as a two-connecting-rod mechanism with three freedom degrees, a kinetic model of the two-connecting-rod mechanism is combined with the kinetic model of the exoskeleton type upper limb rehabilitation robot, and the exoskeleton type upper limb rehabilitation robot with the man-machine interaction kinetic model is formed. The robot can judge the motion intention of a patient by comparing the joint force moment estimation value with the actually-measured force moment value. The exoskeleton type upper limb rehabilitation robot with the man-machine interaction kinetic model can accurately recognize the motion intention of the upper limbs of the patient in application of engineering, data are stable and reliable, recognition and judgment results are accurate, and the exoskeleton type upper limb rehabilitation robot has expectable great economic values and social values.
Owner:NORTHEASTERN UNIV
Grid voltage stabilization on-line monitoring method based on voltage stability local indexes
InactiveCN101666825APrecise time-varying propertiesAccurately handle time-varying propertiesEffective value measurementsPower gridEngineering
The invention provides a grid voltage stabilization on-line monitoring method based on voltage stability local indexes, comprising the following steps: calculating single power consumption transmission equivalence system parameters of a monitored node according to grid topology structure parameters and relevant node voltage current phasor in adjacent areas of the monitored node; using the single power consumption transmission equivalence system parameters to identify the influence of a system outside the area on the monitored node to obtain a single power consumption transmission equivalence system expanded by the monitored node; calculating voltage stability local indexes of the monitored node according to the expanded single power consumption transmission equivalence system parameters; judging whether the monitored node is a weak node according to the node voltage stability local indexes; and if so, performing voltage stability warning. The identified initial value is the calculatedsingle power consumption transmission equivalence system parameter. The invention can solve the problem of misjudgment of index values generated by incorrect identified parameters when the continuousexcitation condition is not satisfied; the method has fine index value performance, can judge the weak node correctly, and realize on-line monitoring of the grid voltage stability.
Owner:SOUTHWEST JIAOTONG UNIV
Liquid chromatography-mass spectrometry screening method of unknown toxic substances in blood
ActiveCN107478747AEnsure highly sensitive and effective testingQuick checkComponent separationToxicantScreening method
The invention discloses a liquid chromatography-mass spectrometry screening method of unknown toxic substances in blood. The liquid chromatography-mass spectrometry screening method comprises the following steps: taking a blood sample to be detected, adding acetonitrile precipitated protein, oscillating, centrifuging, taking a supernatant, filtering by using a 0.22-micron microporous organic filter membrane, then performing LC-MS / MS analysis, and judging whether the blood sample to be detected contains toxic substance components or not according to an analysis result; the used instrument is an ultraLC 100-XL-4000Q TRAP liquid chromatograph / mass spectrometer or an Agilent 1100 liquid chromatography-AB 3200 QTRAP triple serial quadrupole mass spectrometer from an AB company. By the liquid chromatography-mass spectrometry screening method, detection methods of different types of toxic substances are established, detection is fast and accurate, the detection limits of common toxic substances are given, high-sensitivity and effective detection of all target objects are guaranteed, a scientific data support is provided for a negative detection result, and thus a strong scientific basis is provided for relevant clinical diagnosis and rescue as well as criminal investigation and litigation.
Owner:山东省公安厅
Method for online identification of low-frequency oscillation mode of electric power system based on random response signals
ActiveCN106353623AAccurate identificationThe identification result is accurateElectrical testingZero meanTime range
The invention discloses a method for online identification of a low-frequency oscillation mode of an electric power system based on random response signals. The method comprises the following steps of: firstly, reading a section of angular speed signals of different power generators when the electric power system runs normally; then performing mean removal processing on the read signals to obtain zero-mean random response signals; processing the zero-mean random response signals by using a natural excitation technology to obtain free oscillation signals; and finally, performing mode identification on the obtained free oscillation signals by adopting a PRCE method to obtain a frequency, a damping ratio and an oscillation mode state of the low-frequency oscillation mode. The method disclosed by the invention can identify the low-frequency oscillation mode of the electric power system in a wider time range, is better in identification precision, speed and noise immunity, and is more capable of identifying an oscillation mode state, thereby providing a brand-new way and method for low-frequency oscillation analysis of the electric power system.
Owner:SOUTHWEST JIAOTONG UNIV
Painting and calligraphy work fidelity identification system
ActiveCN103164699AAvoid Arguing QuestionsRealize the goal of "determining the authenticity at a glance"Character and pattern recognitionPattern recognitionData information
The invention relates to a painting and calligraphy work fidelity identification system. Identification areas of identification characteristics are selected from real works and photographed to acquire real work image characteristic data and form an information file, identified image characteristics of works to be identified in each identification area and corresponding image characteristics of the pre-stored corresponding real works undergo comparative analysis, and the analysis result is used as the basis for judging the reality of the works to be identified. In order to facilitate operation, the identification areas of the works are preferably determined and identified by adopting an identification plate, wherein the identification plate is a flat plate of which the surface is provided with one or more identification holes, and the identification holes are equal-diameter through holes perpendicular to the plate surface; the identification plate covers the real works according to the selected coverage position; and proper areas serving as the identification areas are selected from the exposed work picture after coverage. By adopting the system, complex image characteristics of the painting and calligraphy works can be simplified into brief image characteristics facilitating judgment and expression or data information of the system, and fidelity identification can be simply and quickly realized.
Owner:严梅
Detection method of Chinese patent medicines containing at least two kinds of Radix Paeoniae Alba, Ginseng, Danshen, Artemisia annua, Licorice, Chuanxiong and Angelica
InactiveCN101991661AThe identification result is accurateChange processing methodAnthropod material medical ingredientsComponent separationSalvia miltiorrhizaDrugs solution
The invention provides a method for detecting a Chinese patent drug containing at least two of white paeony root, ginseng, salvia miltiorrhiza, sweet wormwood, liquorice and angelica sinensis, comprising the steps as follows: preparing a sample solution and a comparison product drug solution, adopting acetonitrile and water as mobile phases, and performing high performance liquid chromatography (HPLC) measurement, wherein the detection wavelength is 201-290nm; and detecting whether a corresponding chromatographic peak exists at a position, which has the same reservation time with the chromatograph of a comparison drug, in the chromatography of a sample. Compared with the traditional thin-layer chromatography identification method, the detection method in the invention has the advantages that the mode of processing a sample containing various drugs in a liquid phase chromatograph is changed, the mixed peak in the liquid phase chromatography except the components to be detected in the Chinese patent drug is successfully eliminated, and results are more accurate and stable.
Owner:NAT INST FOR FOOD & DRUG CONTROL
Online converter parameter identification method based on observer
ActiveCN106096298AThe identification result is accurateImprove stabilityInformaticsSpecial data processing applicationsCapacitanceLoad resistance
The invention provides an online converter parameter identification method based on an observer. An inductive current and output voltage of a converter are subjected to synchronous sampling, a converter discrete model is established, and the converter discrete model is subjected to online parameter identification through the observer. The observer principle is adopted for the online converter parameter identification method based on the observer, main circuit parameters of the converter are subjected to non-invasive online identification, an accurate parameter identification result can be obtained without affecting normal work of the converter, and multiple parameters including the filtering inductance value, the inductance equivalent series resistance value, the filtering capacitance value, the filtering capacitance equivalent series resistance value, the load resistance value and the like can be identified accurately on line according to the output voltage sampling value, the inductive current sampling value and the controller output of the converter. The online converter parameter identification method is easy to implement, simple in analysis process and wide in application range.
Owner:CHONGQING UNIV
Jinhua ham grading and identifying method based on electronic nose technology
InactiveCN102692488AThe identification result is accurateThe identification result is objectiveTesting foodPrincipal component analysisDiscriminant model
The invention discloses a Jinhua ham grading and identifying method based on an electronic nose technology. The method comprises the following steps of: putting standard samples into a sealed container, and sealing the standard samples in a thermostat at the temperature of 30 degrees for 30 minutes, wherein special grade, first grade and second grade Jinhua hams which are identified by a sensing method according to national recommended standard of GB / T19088-2008 original producing area products of Jinhua hams are taken as standard samples; pumping headspace gas into an electronic nose through a sampling channel, adsorbing a certain amount of volatile substances by a sensor so as to change the conductivity, acquiring signals by a data acquisition system, and storing the signals in a computer; and performing principal component analysis, linear discriminant analysis and partial least square analysis on the acquired data by using Unscrambler software, an WinMuster software and the like, establishing discriminant models of the hams in various grades, and predicting the samples to be tested by using the models. The method provided by the invention is convenient to operate and accurate and objective in result, and the traditional sensory grading can be replaced..
Owner:ZHEJIANG UNIV +2
Gas/liquid twe phase flow flow pattern identifying method and system based on soft measurement technology
InactiveCN1554936AThe identification result is accurateThe program is rich in functionsFlow propertiesMicrocomputerAudio power amplifier
In soft measurement technology frame, the easy-to-measure reliable pressure difference fluctuation signal is adopted as auxiliary variable in detecting flow pattern of two phase flow as the main variable. The acquired pressure difference signal is wavelet analyzed, corresponding characteristic values are extracted, and the characteristic values are used in fuzzy identification of the flow pattern of two phase gas / liquid flow in horizontal pipe. The key soft measurement model is established by means of combining the wavelet analysis technology and fuzzy pattern identifying technology. Then, one flow pattern identifying system for two phase gas / liquid flow is established, and the system consists of test pipeline, pressure sampling hole, pressure sampling pipe, pressure difference sensor, amplifier, data acquiring card, microcomputer and printer. The detected pressure difference signal is processed in the system for pattern identification of two phase gas / liquid flow.
Owner:ZHEJIANG UNIV
HPLC (High performance liquid chromatography) detection method for distinguishing different cultivars of uncaria
ActiveCN103869010AEasy to identifyEfficient separationComponent separationHplc fingerprintMedicinal herbs
The invention belongs to the field of analysis of traditional Chinese medicinal materials, and particularly discloses an HPLC (High performance liquid chromatography) method for distinguishing different cultivars of uncaria. All chromatographic peaks are separated effectively when the uncaria traditional Chinese medicinal materials are subjected to HPLC detection by optimizing each experimental parameter; the phenomena of mutual interference of the chromatographic peaks, trailing and the like are reduced; mutual interference of the chromatographic peaks of different ingredients in different cultivars of uncaria in HPLC detection is basically avoided, so as to provide basis for authenticating different cultivars of uncaria and constructing a uncaria HPLC fingerprint spectrum.
Owner:GUANGDONG PHARMA UNIV
Method for identifying medicinal materials using characteristic atlas
InactiveCN1588050AImprove stabilityImprove featuresComponent separationPattern recognitionData acquisition
The invention relates to a identification method for drugs with characteristic graphoes. The method acquire the characteristic graphoes with liquid phase chromaspectrum-mass spectrum combining technology and identify medicine with the characteristic graphoes. The identification method provided by the invention is based on the characteristic graphoes,the steps includes data acquirement, chromatography matching, the data normalization processing,the characteristic selection and the characteristic graphoes establishment. The invention has the following advantages and remarkable effect compared to the current method of adopting the original fingerprint map to identify drugs: 1)the specification of the data acquisition system is low,the characteristic graphoes has good stability, specificity and objectivity; 2)the characteristic graphoes causes the increas of the difference of the sample in the same category and between the different categories, getting better category charateristics, its identifying ability is better than the original fingerprint graphoes; 3)the identification result of the drugs is accurate, available and reliable.
Owner:TSINGHUA UNIV
Road accident dark spot identification system based on system safety index distribution method
ActiveCN103116979AAvoid segment unit divisionThe identification result is accurateRoad vehicles traffic controlDistribution methodDark spot
The invention discloses a road accident dark spot identification system based on a system safety index distribution method. The system comprises a history accident data recording unit, a system safety index recording unit, a dark spot identification unit and a dark spot identification result output unit. The system safety index method comprehensively takes consideration of history accident data correlative in space positions on a target road, calculation is simple, only system safety indexes on a road segment node need to be calculated, road segment units are needless to be divided, the occasion that in a traditional dark spot identification method, the road segment units must be divided first is eliminated, meanwhile the space correlation of the history accident data is taken into consideration, and results are precise.
Owner:SOUTHEAST UNIV
Intelligent identification method of metallurgical mine phase
InactiveCN101059450AThe identification result is accurateIdentification steps are simpleImage enhancementSurface/boundary effectFeature extractionComputerized system
The invention relates to a metallurgy mineralography intelligent recognize method, which uses a mineralography microscope, a camera, an image pickup card and a computer system. And the method comprises that extracting the reflective index and mineralography texture character of known sintered mineralography, to build a database of mineralography character, picking up the mineralography picture of object sample, extracting reflective index and mineralography texture character, using the computer system to recognize the mineralography of object sample, to be compared with the database, to find minimum spatial value, to judge the kind of mine. The invention has simple operation, low labor strength, simple and quick process, and accurate result.
Owner:CHONGQING UNIV
Method for marking and finding illegal cooking oil
InactiveCN102539639ADoes not affect reasonable use againSimple identification methodTesting foodCooking oilWaste management
The invention discloses a method for simply and clearly detecting and finding recovered oil processed from kitchen waste oil through an instrument by adding a tracer in the used kitchen waste oil for clearly marking the kitchen waste oil. Therefore, the kitchen waste oil after recovery can still be simply and clearly detected even through the treatment, such as dilution, high temperature, deodorization, bleaching, deacidification and the like, and a way that people re-eat the kitchen waste oil is further cut off. The method disclosed by the invention has the advantages of high sensitivity in identification, simple identification method, accurate identification result, low using cost and no impacts on reasonable re-utilization of the kitchen waste oil, and is easy to popularize and use.
Owner:何联泉
Method for rapidly identifying black shank resistance of tobaccos
InactiveCN104745672ARapid identificationEasy to breedFungiMicrobiological testing/measurementDiseaseAnimal science
The invention belongs to the field of crop disease resistance identification and especially a method for rapidly identifying the black shank resistance of tobaccos. The method for rapidly identifying the black shank resistance of the tobaccos is capable of effectively overcoming the defects of exiting identification, and comprises the following steps: step 1, culturing tobacco black shank bacteria; step 2, taking tobacco seeds to be tested and sterilizing the surface; and step 3, performing germination rate and morbidity statistics and performing disease resistance evaluation. The method is capable of saving manpower and material resources and also greatly reducing the identification time; the resistance level to the black shank is not limited by the growth seasons; besides, the method is simple in identification operation steps and relatively low in test room requirement conditions; according to the method, the purpose of rapidly identifying the black shank resistance of the tobaccos at low cost and high flux is achieved; the method is suitable for identifying the black shank resistance of a large batch of germplasm materials in tobacco breeding study; and as a result, the anti-disease germplasm resource screening, the resistance hereditary character study and the anti-disease variety breeding and popularization / application can be accelerated.
Owner:TOBACCO RES INST HENAN ACADEMY OF AGRI SCI
Ship parameter identification method based on particle filtering
ActiveCN105005679AImprove filtering accuracyImprove execution efficiencySpecial data processing applicationsTime domainState space
The invention belongs to the field of ship parameter identification and particularly relates to a ship parameter identification method, which can be used for estimating unknown parameters in a ship time domain state space model, based on particle filtering. According to the ship parameter identification method, a force and a moment are applied to a ship by using executing mechanisms such as a propeller, a rudder and the like of the ship, so that the ship takes special exercise; displacement and attitude angle information of the ship at each discrete sampling moment is measured under geodesic coordinates by using a measuring system, and is an output observation value of the ship; a ship parameter estimation value at each moment is obtained by identifying the ship by using a ship parameter estimation device according to a state estimation value and the output observation value of the ship; and state values, namely an angular speed value and a linear speed value of the ship under the geodesic coordinates, of the ship are estimated by using a particle filter according to stress information at each moment and a parameter value which is identified at the previous moment. According to the ship parameter identification method based on particle filtering provided by the invention, observed data does not need to be processed in batches and a lot of iteration does not need to be carried out, and the filtering precision is very high; and the calculation is simple and the execution efficiency is high.
Owner:HARBIN ENG UNIV
Motor mechanical parameter identification method and system based on high-order sliding-mode observer
ActiveCN109873586ARealize identificationNo phase delayElectronic commutation motor controlVector control systemsLoad torqueControl theory
The invention discloses a motor mechanical parameter identification method and system based on a high-order sliding-mode observer. The method comprises the following steps of operating a motor under two working conditions of the same acceleration and different rotating speeds, obtaining output signals of the high-order sliding-mode observer, and then calculating a friction coefficient estimation value; eliminating the influence of a friction coefficient error, obtaining output signals of the high-order sliding-mode observer when the motor is operated in two working conditions of different acceleration, and then calculating a torque inertia estimation value; and eliminating the influences of the friction coefficient error and a torque inertia error, obtaining an output signal of the high-order sliding-mode observer when the motor is operated in a working condition, and calculating a load torque estimation value. According to the method, the mechanical parameter identification is realized, the accuracy of a mechanical parameter identification result is improved, and the application value of the mechanical parameter identification is improved.
Owner:HUNAN UNIV
Method for identifying fidelity of paintings and calligraphy works
ActiveCN103150554AAvoid likeness and likenessAvoid the often debated issues of likeness and dissimilarityCharacter and pattern recognitionPattern recognitionComputer science
Owner:严梅
Method for identifying hybrid germplasm of actinidia based on genome heterozygosity
InactiveCN104630382AShorten the timeLower Sequencing CostsMicrobiological testing/measurementActinidiaGermplasm
Owner:SOUTH CHINA BOTANICAL GARDEN CHINESE ACADEMY OF SCI
Zero-sequence parameter on-line identification method for 200 kV or more single-circuit power transmission lines
ActiveCN104237677ASolve the problem of discernibilityThe identification result is accurateElectrical testingSymmetrical componentsPower grid
The invention discloses a zero-sequence parameter on-line identification method for 200 kV or more single-circuit power transmission lines. The zero-sequence parameter on-line identification method comprises the steps of 1 saving three-phase asymmetric voltage phasor data and three-phase asymmetric current phasor data of two ends of a single-circuit power transmission line measured by a phasor measuring unit; 2 extracting three-phase asymmetric voltage phasors and three-phase asymmetric current phasors of the two ends of the single-circuit power transmission line from the saved data in a period from fault phase clearing to single-phase reclosure completion; 3 performing symmetrical component transformation and calculation to obtain zero-sequence voltage component data and zero-sequence current component data of the two ends of the single-circuit power transmission line; 4 solving positive sequences, negative sequence and zero-sequence voltage-current equations of the two ends of the single-circuit power transmission line by means of a least square method so as to obtain zero-sequence parameters of the single-circuit power transmission line. The zero-sequence parameter on-line identification method can complete zero-sequence parameter identification on the single-circuit power transmission line under the situation of the online power grid and has the advantages of being accurate in identification result and high in parameter identification reliability and identifiability.
Owner:ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
Method for screening dandelion salt-tolerance mutants
ActiveCN104719162ANormal growthAccelerate the process of breeding for salt toleranceHorticulture methodsPlant tissue cultureEthylmethane SulfonateAlkali soil
The invention discloses a method for screening dandelion salt-tolerance mutants. The method comprises the steps that full seeds are selected and cultured; aseptic seedlings are acquired and cut into slices; the slices are subjected to callus induction; embryonic calluses are obtained, sequentially inoculated to a liquid differential medium containing EMS (Ethylmethane Sulfonate) and a solid differential medium containing NaCl, and screened; salt-tolerance test-tube seedlings are obtained; acclimatization and transplant are performed to make the salt-tolerance test-tube seedlings survive; then the salt-tolerance test-tube seedlings are transplanted a greenhouse; and salt-tolerance dandelion plants are obtained with the combination of coastal original saline alkali soil potting saline-alkaline tolerance identification method. The method for screening the dandelion salt-tolerance mutants is simple to operate, good in effect, high in efficiency, and very wide in application prospect, and accelerates a dandelion salt-tolerance breeding course.
Owner:COASTAL AGRI RES INST HEBEI ACAD OF AGRI & FORESTRY SCI
Microbial identification and analysis system and device based on next-generation high-throughput sequencing
PendingCN111276185AThe identification result is accurateHigh throughputBioreactor/fermenter combinationsBiological substance pretreatmentsAnalysis dataData mining
The invention discloses a microbial identification and analysis system and device based on second-generation high-throughput sequencing, and the system comprises a task management module which is usedfor building a task list, managing an identification and analysis task in the task list, uploading to-be-identified and analyzed data to a server, and carrying out the identification and analysis ofthe to-be-identified and analyzed data through the server; a report management module used for generating an identification and analysis report according to the identification and analysis result andcompleting the auditing and approving process of the identification and analysis report according to an auditing and approving instruction of a user; and a report statistics module used for performingreport statistics on the identification analysis report or the identification analysis sample according to the four dimensions of the strain, the microorganism type, the strain source and the identification analysis report statistics. According to the invention, strain or strain identification can be carried out at a molecular level, and the identification result is more accurate and the throughput is high; besides conventional bacteria and fungi, mould and actinomycetes can be identified; meanwhile, mixed bacteria or bacteria difficult to culture can be identified; and the whole genome sequencing data can be subjected to traceability analysis.
Owner:上海桑格信息技术有限公司
Kiwi fruit species association specific mononucleotide molecular markers and detection primer set and application thereof
ActiveCN106367496AThe identification result is accurateFacilitate the determination of parental sourceMicrobiological testing/measurementDNA/RNA fragmentationBiotechnologyNucleotide
The invention discloses kiwi fruit species association specific mononucleotide molecular markers and a detection primer set and application thereof. By means of sequencing sequences of different kiwi fruit species existing in a kiwi fruit genome database, high-diversity mononucleotide variation regions are looked for in a sequence alignment reference genome mode, a mononucleotide molecular marker primarily selected set is formed, on the basis, a novel mass spectrometer gene typing platform is used for carrying out experimental verification and genotype acquisition on mononucleotide variation sites, species association specific mononucleotide markers are screened through association analysis with the species, finally, a set of molecular markers for kiwi fruit hybrid resource parent species source identification are obtained, and the technical scheme is formed. Identification of kiwi fruit hybrid resource parents can promote understanding of formation of hybrid resource characters and biological characters and accelerate genetic evaluation and development and utilization of hybrid resources, and great theoretical academic significance and high economic application value are achieved.
Owner:SOUTH CHINA BOTANICAL GARDEN CHINESE ACADEMY OF SCI
Fourth-order mixed mean cumulant and improved TLS-ESPRIT algorithm-based low-frequency oscillation mode identification method
ActiveCN106849131AThe identification result is accurateThe order calculation is smallFlicker reduction in ac networkPower oscillations reduction/preventionUltrasound attenuationPattern recognition
The invention relates to a fourth-order mixed mean cumulant and improved TLS-ESPRIT algorithm-based low-frequency oscillation mode identification method. Gaussian color noise is inhibited by using a fourth-order mixed cumulant, a TLS-ESPRIT algorithm is improved, a relative change rate of a singular value is introduced for order determination, and a matrix is constructed by using measured data to carry out low-frequency oscillation mode identification of a power system. According to the fourth-order mixed mean cumulant and improved TLS-ESPRIT algorithm-based low-frequency oscillation mode identification method, detected oscillation frequencies, attenuation factors, oscillation amplitudes and phase information of low-frequency oscillation signals of the power system in different oscillation modes are more accurate.
Owner:FUZHOU UNIV
Method and PCR (polymerase chain reaction) primer for identifying dendrobium officinale
InactiveCN106521003AThe identification result is accurateAvoid misidentificationMicrobiological testing/measurementDNA/RNA fragmentationChloroplastPolymerase chain reaction
The invention relates to a method and a PCR (polymerase chain reaction) primer for identifying dendrobium officinale. The method includes identifying the dendrobium officinale on the basis of mononucleotide difference sites of chloroplast ACCD gene sequences of the dendrobium officinale and other herba dendrobii of dendrobium by the aid of Tetra-primer ARMS-PCR processes. The PCR primer for identifying the dendrobium officinale comprises specific inner primers for identifying the dendrobium officinale and the other herba dendrobii of the dendrobium and a pair of specific outer primers. The method is simple, and the dendrobium officinale can be detected by the aid of one-step PCR and conventional electrophoretic techniques; identification results are accurate, mismatched basic groups are introduced when the primers are designed, accordingly, the specificity of PCR amplification reaction can be greatly enhanced, and false negative results can be prevented owing to positive control of outer primer strips; further, the method is sensitive, and the dendrobium officinale can be completely identified only by a few samples.
Owner:三明市农业科学研究院
High-throughput STR typing system capable of identifying complex consanguinity and kit thereof
ActiveCN110499373AImprove balanceAchieve single-tube amplificationMicrobiological testing/measurementDNA/RNA fragmentationStr typingNucleic acid detection
The invention discloses a high-throughput STR typing system capable of identifying complex consanguinity and a kit thereof, and relates to the technical field of nucleic acid detection in vitro. The high-throughput STR typing system capable of identifying complex consanguinity comprises PCR primers used for amplifying 60, 118 or 179 linked autosomal STR loci; and the kit comprises a PCR primer composition, an Index connector sequence, an IGT-EM707 polymerase mixture, an amplification buffer enhancer NB, a YF buffer solution B, a database setting-up reagent and the like. The high-throughput STRtyping system capable of identifying complex consanguinity and the kit thereof provided by the invention are capable of realizing single-tube amplification of 60, 118 or 179 linked autosomal STR loci; and moreover, the STR typing system and the kit thereof are good in balance, high in sensitivity, good in specificity, and accurate in typing result. Thus, the high-throughput STR typing system capable of identifying complex consanguinity and the kit thereof can be used for identifying complex relationships of different consanguinity at the same level.
Owner:SHANXI MEDICAL UNIV
Train speed self-adaptive control method based on system parameter identification
ActiveCN110758413AConstraint learningThe identification result is accurateRailway signalling and safetyLocomotivesTorque analysisSimulation
Owner:海风智能科技(浙江)有限公司
Surface heat flow identification three-dimensional effect correction method based on neural network
InactiveCN110083895AGood strong nonlinearityImprove recognition accuracyGeometric CADDesign optimisation/simulationNerve networkHeat flow
The invention discloses a surface heat flow identification three-dimensional effect correction method based on a neural network. The correction method comprises the following steps: mounting a plurality of temperature sensors on the inner wall surface of an area around a stationary point heat flow; utilizing temperature data of each internal temperature measuring point; obtaining a heat flow on acorresponding heating surface point through a one-dimensional heat flow identification method; and then introducing an artificial neural network algorithm, carrying out normalization processing on theidentified heat flow corresponding to each measuring point in the previous step to serve as an input sequence of the neural network, and carrying out training in the neural network to obtain an output anti-normalization result to serve as a heat flow identification value of a region of interest. According to the correction method provided by the invention, the time complexity of three-dimensionalidentification is avoided, meanwhile, the good noise resistance of the sequential function method and the strong nonlinearity of the neural network are combined, a traditional model can be greatly simplified, the identification precision of the stationary point heat flow is improved, and the real-time performance of on-line identification is ensured.
Owner:ZHEJIANG UNIV
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