537 results about "Theoretical research" patented technology

A method for structuring specialist system based on knowledge discovery includes forming new knowledge base unit by knowledge obtained from inference mechanism and knowledge learned from failure and mistakes, adding new knowledge obtaining-channel on said system, setting knowledge discovery process module in databank and setting knowledge discovery-creating mechanism and model in knowledge base.

The invention discloses a voice synchronous-drive three-dimensional face mouth shape and face posture animation method. A user can input new voice information, and the new voice information can be preprocessed to combine mouth shape animations and face posture animations which are synchronous with voice on the face head of a virtual man. The method specifically comprises two stages. In a training stage, voice visualization modeling can be achieved through a k-nearest neighbor algorithm (KNN) and hidden Markov model (HMM) mixed model. In a combining stage, the user can input new voice information, characteristics of voice signals are extracted, face posture and mouth shape sequence parameters corresponding to the voice signals can be generated through the KNN and HMM mixed model and are processed in a transition mode, and X face open source software is used to combine delicate and abundant three-dimensional face animations. The method has significant theoretical study value and has wide application prospect in the fields of visual communication, virtual meetings, games, entertainments, teaching assistance and the like.

The invention relates to a data mining-based plate shape control key process parameter optimization system, and belongs to the technical field of automatic control of cold continuous rolling plate shape. The data mining method is adopted for acquiring key process parameter optimization settings which can meet the good cold continuous rolling plate shape. The system is characterized by comprising the following functional modules: an actual data acquisition and storage module, a process data pre-processing module, a process data storage module, a process data correlation analysis module, a process data clustering analysis module, a process data association rule analysis module, an optimization result generating module and an optimization result application module. The system has the advantage that the good plate shape can be obtained by applying the plate shape control system. The method avoids endless theoretical research on plate shape control and fully utilizes actual plate shape control process data containing successful operation experience of field operators, and the plate shape process parameter settings which can obtain the good plate shape are acquired by data mining, so the plate shape qualification rate and the finished product rate of cold continuous rolled strip steel are improved.

The invention discloses a routine public transit network optimization and adjustment method based on cellphone signaling data, and the method comprises the following steps: cellphone signaling data processing, region traffic feature extraction, and public transit network dynamic optimization. The method takes the existing theoretical research as the basis, combines with practical experience and research results in a public transit network optimization project, organically combines a qualitative analysis method and a quantitative analysis method, enables a line optimization method to accord with the actual condition of public transit network optimization in a better manner, is higher in operability, and provides optimization decision support for a bus company and related administrative departments in the public transportation planning and management. The method achieves the purposes that the number of straight passengers of the public transit network is the largest, the construction cost of a bus system is the lowest, and the number of transfer times of passengers is the smallest. The method can improve the bus service level, improves the bus reachability, and effectively alleviates the traffic congestion.

The invention discloses a method for preparing nano manganese dioxide of different crystal forms and appearances by adopting microwave hydrothermal method. The steps are as flows: (1) dissolving potassium hypermanganate in water, adding hydrochloric acid, and stirring to prepare a reaction solution; (2) pouring the reaction solution into a sealable reactor, placing the reactor in a microwave field for microwave radiation with microwave frequency being 2.45GHz, temperature being 105-115 DEG C, and heat preservation time being 0.5-2h, separating, washing and drying the generated precursor to obtain petal-shaped nano delta-phase manganese dioxide. In step (2), the temperature of the reaction solution is 135-145 DEG C, and the product of the reaction is alpha-phase manganese dioxide nanotube. The invention features simple technique, low cost, controllable product quality, extensive applicability and the like, the prepared nano manganese dioxide is applicable to fundamental theoretical research in such fields as battery, molecular sieve, catalyst and magnetic materials, and the research and development of related function materials.

The invention provides a simulation experimental apparatus for a lubrication condition of an antifriction bearing and a measuring method thereof. The apparatus comprises an operating platform; a drive unit is arranged on the operating platform and is used for driving an elastodydrodynamic contact couple unit; and the elastodydrodynamic contact couple unit is connected with a loading unit; meanwhile, the elastodydrodynamic contact couple unit and an optical measurement unit are cooperated with each other. According to the measuring method of the apparatus, the method comprises the following steps that: a preparation process, a localization and adjustment process for an antifriction bearing; a driving process; and a measurement analysis process. A motion state of the antifriction bearing can be observed directly; simultaneously, a lubrication state of a lubrication oil film in the antifriction bearing are measured and analyzed, so that experimental data are provided for a theoretical research and improvement on an engineering technology.

A device is described based on flexible photonic crystal, which is comprised of a periodic array of high index dielectric material embedded in a flexible polymer. Dynamic, real time tunability is achieved by the application of a variable force with a MEMS actuator or other means. The force induces changes in the crystal structure of the photonic crystal, and consequently modifies the photonic band structure. The concept was demonstrated by a theoretical investigation on the effect of mechanical stress on the anomalous refraction behavior of the flexible PC, and a very wide tunability in beam propagation direction was observed. Experimental studies on fabrication and characterizations of the flexible photonic crystal structures were also carried out. High quality flexible PC structures were fabricated by e-beam lithography and anisotropic etching processes.

The invention discloses an automotive self-adaptive intelligent steering system, which comprises steering control center ECU, a steering wheel and pressure sensing device, a steering module device, an ESP actuating unit and a variable transmission ratio actuating unit, and is characterized in that: when steering operation is performed, the steering control center ECU extracts a yaw velocity signal, a steering wheel rotation angle signal and a vehicle speed signal to perform calculation to determine an angular transmission ratio. The system of the invention can perform comfortable steering, intelligent steering, moving steering and automatic steering selectively; the new self-adaptive steering system is established by integrating various new technical elements; a new theoretical research basis and a new reference direction are provided for the research of new technical schemes satisfying humanization needs in the field; and meanwhile, the system can be used as a unit body for integrated development of chassis to realize different driving styles by cooperating with other systems. Therefore, further upgrade and functional expansion can be made.

The invention discloses a super-resolution face recognition method based on deep belief networks, and relates to the technical field of face recognition. From a cognitive perspective, it is believed that an intrinsic relation exists between mutually corresponding face images differing in resolutions. But previous studies show that the method for expressing the intrinsic relation by linear approximation is restricted by linear approximation. Therefore, it is believed that the intrinsic relation is nonlinear. In view of outstanding performances of an artificial neural network on the nonlinear classification problem, a neural network algorithm is adopted to capture the nonlinear relation of the mutually corresponding face images differing in resolutions under the condition of posture change. Both theoretical research and neurophysiological research show that a deep structure, such as a system constructed by multiple layers of nonlinear processing units, should be constructed to build an intelligent processing system. According to the face recognition method, deep belief networks are adopted to extract a common nonlinear structure shared by mutually corresponding face images differing in resolutions.

The invention relates to a planisher product plate surface roughness forecast and control technology which comprises the following steps: a. establishing planisher working roller roughness and working roller initial roughness, drawing the mathematical model between the kilometers after changing the roller; b. constructing the function expression between the counter mark ratio Krs and the genetic ratio Kss; c. constructing the initial module of the planished product plate surface roughness; d. establishing the roughness forecast module of the special planisher by the on-site experiment data; e. online forecasting the product plate roughness by the plate surface roughness module; f. online controlling the product plate surface roughness.

The invention provides a power distribution terminal security access platform and an implementation method thereof. A data isolation component and a power distribution interactive gateway, which are connected in sequence, are added between an extranet front-end processor and a power distribution terminal. Compared with the existing security access products, the power distribution terminal security access platform provided by the invention performs theoretical research and technology implementation by dividing information security protection into three main bodies, namely, application server security, transmission channel security and terminal security, therefore the purpose of the platform is clearer. The security network protocol of the power distribution terminal security access platform provided by the invention is provided with a special key agreement mode and a domestic encryption algorithm. According to the characteristics of a power enterprise information network, the current situation of an application system and the requirements of the power information security grade protection, in view of the demands of different service applications in the power enterprise, the power distribution terminal security access platform provided by the invention has a complete technical system and solution for power distribution terminal security access. The power distribution terminal security access platform provided by the invention is implemented without changing the network structure or modifying the firewall configuration or modifying the configuration of a terminal user.

The invention relates to a multi-unmmaned aerial vehicle distributed simulation method, aiming at providing a distributed simulation platform which can be used for coordination control of a multi-unmmaned system, so as to provide a simulation analysis environment for related theoretical researches on multi-unmmaned aerial vehicle system control schemes and algorithms and improve research efficiency of a multi-unmmaned aerial vehicle algorithm. The invention adopts the technical scheme that an HLA (High Level Architecture)-based multi-unmmaned aerial vehicle distributed simulation method is realized by virtue of a ground control system computer, a platform task management system computer and a plurality of virtual unmmaned aerial vehicle computers, a task scheduler and a corresponding control instruction are sent to the platform task management system computer by virtue of an RTI (Real-Time Interface) simulation interface on the ground control system computer; a decision instruction isproduced on the platform task management system computer aiming at contents of the task scheduler and the control instruction according to a multi-vehicle and single-vehicle control algorithm; and finally real-time flying states of multiple unmanned aerial vehicles are observed in a visualized environment on the virtual unmanned aerial vehicle computers. The multi-unmmaned aerial vehicle distributed simulation method provided by the invention is mainly applied to distributed simulation of the unmmaned aerial vehicles.

The invention discloses a motor controller based on parameter self-tuning and a control method thereof, and relates to the field of motor control system devices. According to the motor controller based on parameter self-tuning and the control method thereof, the control parameters of a PID controller are self-tuned by identifying the rotational inertia of a system ahead of time and converting a controlled system into a first-order inertia link and a second-order inertia link. Thus, the motor controller and the control method have higher engineering practicability. The controller has good motor control performance, and can self-tune the control parameters. Thus, the optimal parameters of a motor control system can be obtained, and the motor control system can adapt to more complex conditions and meet the requirement of users for high performance index. The motor controller and the control method are of great theoretical research value and engineering practical significance. The motor controller and the control method can be widely used in intelligent wheelchair control, unmanned lawn mowers, industrial automation, air defense, and other industries.

The invention provides a relay reliability service-life test system based on dynamic characteristics on the basis of a certain acceleration service-life theory research and aiming at solving the defects of the existing service-life test apparatuses that the test efficiency is low; the test period is long and the cost is high and damages cannot be avoided, etc. The system can take the action frequency and load of the relay as the environment variables of the relay acceleration service-life so as to realize a non-damage and effective test technique. The system at least can simultaneously test 10 groups of conversion contacts and 10 groups of coils totally and is provided with the flexible expansibility; a sampling parameter resolution is 1Mu s; an action frequency can be set to be equal to or less than 120 times / min. The system comprises a main control unit, a relay driving unit, a data collecting and processing unit and an upper computer processing unit.

The invention discloses a method for efficiently transferring CVD (Chemical Vapor Deposition) graphene and acquiring atomically clean surfaces. The method comprises the following steps: spin-coating a layer of PMMA (polymethyl methacrylate) solution on the surface of a graphene / metal substrate, removing the metal substrate through corrosion of an (NH4)2S2O8 solution after being cured, cleaning graphene / PMMA, fishing out through a target substrate and then drying, then dissolving the PMMA layer through an organic acid solvent, and finally further removing the residual PMMA on the surface of the graphene through a high-temperature annealing manner, thus acquiring the atomically clean graphene surfaces. The graphene surface is large in area, complete in structure and little in defects and residual PMMA. According to the method, the residual PMMA is little, and the atomically clean surfaces can be more easily acquired. The graphene acquired through adopting the method is applicable to constructing electronic devices such as a field effect transistor, a light-emitting diode and a transparent electrode, and also can be used for theoretical research of surface interfaces.

The invention discloses a static ball jumping experiment instrument internally provided with a paraffin flame scale block and belongs to college physics teaching experiment instruments. The static ball jumping experiment instrument internally provided with the paraffin flame scale block is composed of the flame scale block, a transparent square box and a plastic comb and is characterized in that the flame scale block is a small block made by the flame ash scale formed by burning a glass test tube with paraffin flames, the transparent square box is a cuboid defined by transparent plastic pieces, the width of the plastic comb is no smaller than that of the transparent square box, and the flame scale block is put into the transparent square box to be sealed. Compared with the prior art, the static ball jumping experiment instrument internally provided with the paraffin flame scale block is characterized in that an aluminum foil metal ball is replaced by the flame scale block, a metal electrode plate is replaced by the transparent plastic pieces, an individual high-voltage direct-current power supply is not needed, the size is small, carrying and operating are facilitated, manufacturing is extremely easy, an effect is obvious, more education functions will be added when the static ball jumping experiment instrument is popularized in teaching, and the good technical guarantee is provided for people to further perform theoretical research.

The invention discloses a dynamic load testing testbed for an agricultural mechanical rotary cultivation part. The dynamic load testing testbed comprises a soil groove and a trolley, wherein the trolley comprises a trolley rack, a rotary cultivation system, a soil compaction system, a soil leveling system and a walking system, the rotary cultivation system is installed at the front end of the trolley rack, the soil compaction system is installed at the rear end of the trolley rack, the soil leveling system is installed on the trolley rack and located between the rotary cultivation system and the soil compaction system, and the walking system is installed on the trolley rack. The testbed represents operation of the rotary cultivation part based on the soil groove and tests dynamic load of the rotary cultivation part. The dynamic load testing testbed has the advantages that the dynamic load testing testbed is not limited by seasons and farming seasons, can conduct real-time recovery processing on soil according to different demands, is good in testing repeatability, is not influenced by outside climate and natural conditions and the like, and can provide data support for theoretical research and design improvement of coil cultivation parts on the basis that a large number of resources are saved.

The invention relates to a comprehensive power distribution network optimization planning method based on a gene modified chaos genetic algorithm. The comprehensive power distribution network optimization planning method is characterized by including the steps of (1), establishing a power distribution network COP (coefficient of performance) investment model, (2) determining optimization variable, and (3) a GR-CGA (gene-repair chaos genetic algorithm). The comprehensive power distribution network optimization planning method has a certain value on theoretical research and practicability value, a power distribution network COP scheme can be generated via a program to perform quantitative analysis on power grid loss, quantitative treatment measure optimization and effectiveness evaluation for a power grid, an experiential treatment measure can be changed to a quantitative scientific decision treatment measure, treating effect is controllable, best treating effect can be achieved with the least cost, and an optimal investment program scheme can be provided to limited programming reformation investment for the current power grid.

The invention discloses a computer simulating method based on protein folding course of synthetic algorism, which comprises the following steps: selecting non-lattice protein model; affirming energy function; searching three-dimensional structure of protein with minimum free energy; simulating the folding course; analyzing data; modifying. The invention combines the prediction of knowledge and the prediction of simulation, which improves the precision and calculating speed greatly without large amount of specific details in the folding course.

The invention discloses a unipolar nano-film memristor which comprises two electrodes and a Ba (1-x) SrxTiO3-delta nano-film arranged in the two electrodes, wherein x is large than 0 and smaller than 1, and delta is larger than 0 and smaller than 3. The principal crystalline phase of the film is measured to be Ba (1-x) SrxTiO3 through X ray diffraction, and actually is Ba (1-x) SrxTiO3-delta which is rich in oxygen deficiency namely oxygen vacancy; the film adopts a single-layer film structure; and the thickness of the film is 20 to 800 nanometers. The invention also discloses a preparation method of the unipolar nano-film memristor. The unipolar nano-film memristor is particularly applicable to general circuit theoretical research and circuit design, has generality and universality, is low in cost and is easily realized physically.

The invention relates to a method for synthesizing quinazolino indazole derivatives. The method comprises the following steps: using a palladium compound as a catalyst, and producing an intramolecular dehydrogenation coupling reaction of 2-aryl-3-aryl amino quinazolinone derivatives in an oxygen atmosphere in the presence of alkali and a molecular sieve so as to obtain the quinazolino indazole derivatives with diversified structures. The method overcomes the defect that a halogenated compound has to be used as a reaction substrate in the prior art under the synergistic effect of the catalyst, alkali and the molecular sieve, achieves a reaction for efficiently synthesizing the quinazolino indazole derivatives by a one-pot method, has the advantages of high efficiency, environmental friendliness, high yield and purity and the like, expands the application range of the transition metal catalytic dehydrogenation coupling reaction, enriches synthetic methods and paths of the quinazolino indazole derivatives, and has very high theoretical research and application values.

The invention provides an experiment device and method for simulating influence of synchronous grouting of a shield tunnel on stratum settlement. The experiment device comprises an experiment box, a tunnel model, a shield tunneling machine model, a fixed cover plate, a displacement measuring part, a displacement measuring part mounting support, horizontal traction equipment, air pressure supply equipment, an air pressure measuring part and a grout container. The method is based on the device. By the experiment device and method, a mechanism of influence of synchronous grouting of the shield tunnel on settlement of surrounding strata under conditions of different grouting amounts, different grouting pressures and different grouting positions can be simulated accurately, and an experiment platform is provided for theoretical study on the mechanism of control of synchronous grouting of the shield tunnel on stratum settlement.

The invention relates to a detection method for a tree-like aging defect of a cable insulation material, belonging to the technical field of electrical equipment insulation diagnosis. The detection method comprises the steps of preparing a cable insulation material to be detected into rectangular samples to be tested, arranging a semiconductive silicon rubber and a pin electrode, and applying high pressure on a tip of the pin electrode; forming a defect channel in the samples to be tested, eliminating the high pressure applied to the pin electrode, and removing the semiconductive silicon rubber and the pin electrode from the sample to be tested; injecting a liquid with fluorescence staining function into the sample to be tested along the detect channel of the sample to be tested; and slicing the sample, scanning with a super-resolution fluorescence microscope, processing an obtained optical microscopic image and a fluorescence microscopic image, and obtaining a feature image of the tree-like aging defect of the cable insulation material to be tested. The method is simple and fast, has high experimental efficiency, is beneficial to diagnosis of the cable insulation defects from the point of view of form, and provides a key image basis for theoretical research of electric tree-like aging.

The invention relates to a method for calculating rotor dynamics performance of a multi-parallel-axis system. The method comprises the steps specifically as follows: step (1), selecting an analysis object and a calculation type, inputting parameters of a bearing-rotor system, finishing pre-processing operations like discretization of the rotor system; step (2), calling a bearing calculation program, calculating dynamic and static characteristic parameters of each bearing, forming a rotor dynamics equation of a parallel axis system which gives consideration to gear engagement according to the selected analysis object and calculation type; and step (3), calling a solving function to calculate a feature value and a feature vector of a dynamics differential equation, converting the feature value and the feature vector into dynamics characteristic result data through dimension so as to finish calculation and analysis of system stability, critical rotation speed, forced vibration response and vibration mode. According to the method disclosed by the invention, calculation and analysis means for dynamics performance of the multi-parallel-axis system, which can be applied to actual engineering, are developed on the basis of solid theoretical research; the calculated rotor system comprises supports of various types; therefore, combination of bearing calculation and rotor system dynamics analysis is implemented better.

The invention provides a flying wing unmanned aerial vehicle maneuvering flight control method based on multi-mode control. The method comprises step 1, dynamic analysis is carried out on a pluralityof typical maneuvering actions, and a plurality of maneuvering sub-modes are extracted from the dynamic analysis; step 2, autostability design is firstly conducted for a longitudinal channel, a transverse channel and a course channel of a flying wing unmanned aerial vehicle, and then a controller of each maneuvering sub-mode is designed; step 3, different maneuvering actions are realized through combination of different maneuvering sub-modes, namely switching of maneuvering sub-mode controllers; and step 4, aimed at the coupling problem of maneuvering, the feedforward decoupling compensation design is combined with the maneuvering sub-mode controller. Compared with an advanced control method which only stays at the theoretical research stage at present, the RSLQR and the PID control methodadopted by the method all have practical engineering application bases which are already verified in the actual unmanned aerial vehicle flying process, so that the safety of the flying wing unmannedaerial vehicle during maneuvering flight can be guaranteed.

The invention discloses a method for determining film continuity critical thickness. The method includes that a dispersion formula model and a fitting mode are arranged on a spectrum ellipsometer, under the condition that the thickness of the film growing on a substrate is less than the preset film thickness, an indirect fitting method is adopted to obtain a change curve showing the phase difference of the film reflected light polarization state changing with the incident light wavelength and a change curve showing the corresponding tangent angle of the film reflection coefficient amplitude ratio changing with the incident light wavelength; under the condition that the thickness of the film growing on the substrate is greater than or equal to the preset film thickness, a direct fitting method is adopted to obtain a change curve showing the phase difference of the film reflected light polarization state changing with the incident light wavelength and a change curve showing the corresponding tangent angle of the film reflection coefficient amplitude ratio changing with the incident light wavelength; and the film continuity critical thickness is determined based on the change curves. The method solves the problem of difficulty in determining the film continuity critical thickness, and has important guiding significance for the precise preparation and application of nano-optoelectronic devices and the related theoretical researches.

The invention provides a method and device for evaluating the efficacy of a chronic disease drug. The method includes the steps of determining a clustering method; clustering real feature data of a case according to the clustering method, and obtaining drug use information and diagnostic information corresponding to different categories; and analyzing the efficacy of each drug according to the drug use information and diagnostic information corresponding to the different categories. The method provided by the invention can be applied to the theoretical research related to the evaluation of theefficacy of the chronic disease drug, and can also be applied to the prediction, early warning and drug recommendation of the clinical disease complications simultaneously. The analysis results are detailed, accurate, small in error. The larger the number of data samples is, the greater the credibility of the analysis results is. Great convenience is brought to medical workers in analyzing and judging the treatment of chronic diseases. The method is of great significance for the analysis of biological and medical related fields.

The invention relates to a method for modelling adaptive learning of an agricultural ontology by optimizing an ontology learning rule according to changes of agricultural knowledge. On the basis of existing research results, aiming at the adaptive learning problem of the agricultural ontology, the invention provides the method for modelling the adaptive learning of the agricultural ontology, mainly comprising the following steps that: 1, adaptive extraction of agricultural conceptions; 2, adaptive extraction of relationships between the agricultural conceptions; 3, integration of adaptive learning models of the agricultural ontology based on multi-Agent, and the like. According to the method disclosed by the invention, the efficiency for automatically constructing the agricultural ontology can be effectively increased; the quality of the constructed agricultural ontology is improved; and the method has a certain theoretical research value and practical significance for constructing the agricultural ontology on a large scale, further establishing an agricultural semantic network and a knowledge grid, and realizing sufficient share and cooperative service of the agricultural knowledge.

The invention relates to a robust infrared face recognition technology. The technology comprises the following main links: first, detecting a face in an image, estimating the direction of the face, and geometrically normalizing the face; then, calculating the weight along with temperature changes of each point in the face image, and converting images at the different temperatures into an image at the reference temperature by using a linear normalization method; and finally, solving the temperature normalized image to acquire a corresponding discrete rheography by using a Pennes biological heat transmission equation so as to acquire a more robust biological characteristic, and recognizing the face by adopting a secondary characteristic extraction method. Experiments prove that the technology can greatly improve the recognition rate of delay data, can be used in a real-time infrared face recognition system, and has high theoretical studying significance and practical application value.