Patents
Literature
Hiro is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Hiro

30 results about "Current theory" patented technology

Answer Wiki. The modern (current) theory of atomic structure states that the electron is treated as both a wave and a particle. The result is the Schrodinger Wave Equation, a mathematical statement that describes the behavior of all electrons up to the limits allowed by the Heisenberg Uncertainty Principle.

On-line fault diagnoses method on rotor winding inter turn short-circuit of turbine generator

This invention relates to one gas wheel motor rotor coil shortcut online test method in the test technique field, which comprises the following steps: through online real time collecting motor electrical parameter data and according to one certain work situation motor electrical parameter data to compute normal current theory values by reverse rotor normal current; then computing excitation magnetic current real value and theory value relative bias; the bias difference is as generation motor set to judge whether there is coil short cut fault as dialogue of the shortcut fault.
Owner:NORTH CHINA ELECTRIC POWER UNIV (BAODING)

A post-measurement simulation method for fault identification inside and outside the zone of model UHV AC transmission lines based on lumped parameter t

ActiveCN102288874ACorrectly identify remote high-resistance faultsOvercoming the pitfalls of detecting failuresFault locationTime domainUltra high voltage
The invention provides an after-test simulation method for inner and outer fault recognition of an ultra-high voltage alternating-current power transmission line based on a lumped parameter T model and belongs to the technical field of inner and outer fault recognition and protection of an alternating-current power transmission line. An after-test simulation time domain method for inner and outer fault recognition for solving a current response by using an equation i~N=iM-C0*duM / dt+1 / 2*R0*C0*diM / dt+1 / 2*L0*C0*d2iM / dt2 which is met by current zero sequence components on two sides of the line and made according to a Kirchhoff current theory under an outer fault of an ultra-high voltage alternating current power transmission line (the power transmission line is equivalent by using a concentrated parameter T model) in a short data window and an equation which is not met by zero sequence voltage and current components on the fault side under an inner fault is raised. The current on the other side is simulated and calculated by using the actually measured current on one side of the line according to the Kirchhoff current theory; and the current is compared with the relevance of a waveform of the actually measured current, so that the inner and outer faults of the ultra-high voltage alternating current power transmission line can be determined and recognized. The after-test simulation method has the advantages of sensitivity to inner fault recognition, reliability to outer fault recognition and the like, and is suitable for being popularized and used in an ultra-high voltage alternating current power transmission line system.
Owner:KUNMING UNIV OF SCI & TECH

Current fitting curve sudden change elimination method for liquid/liquid interface scanning electro-chemical microscope

The invention relates to an elimination method of the jump of a current fitting curve by a scanning electrochemical microscope on a liquid / liquid interface, comprising the steps as follows: (1) a liquid / liquid interface is established; (2) the probe of the scanning electrochemical microscope extends into an organic phase containing reduction-state species and is close to the liquid / liquid interface; the distance d from the probe to the interface and the current value of the probe are recorded; furthermore, the relationship curve between the distance d and the current value of the probe is established; (3) the distance d is standardized as L and the standardized probe current I<T><k> is fit; (4) the relationship curve of fit standardized distance and standardized current is established; (5) discrete wavelet transformation is carried out to the signals (L is more than 2) so as to extract the similar and detailed components; and (6) a minimum average detail discrete wavelet transformation method is used for eliminating the fitting current jump which is generated when L is more than 2. The invention provides the minimum average detailed discrete wavelet transformation method by the discrete wavelet transformation method, which solves the fitting current jump problem of the standard current theory fitting curve of the liquid / liquid interface at large standard distance value.
Owner:NORTHWEST NORMAL UNIVERSITY

High-voltage direct-current circuit harmonic impedance analysis equivalent model and high-voltage direct-current circuit harmonic impedance frequency analysis method

ActiveCN106451522AThe analysis process is accurate and rigorousImprove efficiencyElectric power transfer ac networkCapacitanceTransformer
An embodiment of the invention discloses a high-voltage direct-current circuit harmonic impedance analysis equivalent model and a high-voltage direct-current circuit harmonic impedance frequency analysis method, aiming to solve the problems that a harmonic current path in a typical converter model is limited between a converter transformer and a valve bridge, stray capacitance to ground of converter transformer sleeves is ignored, and a large difference exists between a design result and an actual measurement result of the model based on a direct-current-side harmonic current theory. The high-voltage direct-current circuit harmonic impedance analysis equivalent model comprises a current converter adopting a three-pulse converter model, and the three-pulse converter model comprises a leakage current path and a converter bridge. The high-voltage direct-current circuit harmonic impedance analysis equivalent model is more accurate by taking the nature that harmonic waves are reflected by 3n times under the effect of commutation induction of the leakage current path and the converter bridge into consideration; the influences of an alternating-current system and an alternating-current filter on high-voltage direct-current circuit resonance characteristics are taken into account, so that an analysis process of the high-voltage direct-current circuit resonance characteristics is more accurate and rigorous, and results are more reliable.
Owner:ELECTRIC POWER RES INST OF GUANGDONG POWER GRID

Control method and control device for Cartesian coordinate robot

The embodiment of the invention discloses a control method and a control device for a Cartesian coordinate robot. One specific implementation mode of the method comprises the following steps: obtaining initial position information and target position information of the robot in response to a received operating control instruction; determining initial reference position information and target reference position information of the robot in an established reference coordinate system; and executing the following control steps: obtaining current actual position information and current theoretical position information of the robot to determine the current reference position information of the robot, and determine whether the current reference position information is the target reference position information in the first coordinate axis direction; and in response to determination that the current reference position information is not the target reference position information, by taking the current reference position information as the initial reference position information, continuously executing a control step. The implementation mode can implement that during operation of the robot, an error produced in the first coordinate axis direction can be dynamically compensated, so that the operation efficiency is improved.
Owner:BEIJING JINGDONG QIANSHITECHNOLOGY CO LTD

Computer aided battlefield awareness method

In order to overcome the problem that the current theory is not very capable of perceiving battlefields, the invention provides a method for assisting battlefields to perceive by a computer and fulfills the accuracy of the method process of assisting battlefields to perceive by the computer. The battlefield environment simulation refers to the description of battlefield environment through the simulation technique. Simulation refers to the study of an existing system or a system in design through the experiment of a system module. Computer simulation (also called mathematical simulation) refers to that the system module is applied to doing experiment on a real system or a system in design by the assistance of a computer so as to fulfill the purpose of analyzing, researching and designing the system. The system hereby refers to an organic integrity of a group of several factors which have specific functions and mutual connection for a certain purpose. The simulation of a system relates to three factors: a system, a system module and a computer, and the basic action linking the three factors are module building, simulation module building and simulation experiment.
Owner:上海北控智能科技有限公司

Operation control method and device of execution mechanism

The invention provides an operation control method and device of an execution mechanism, and belongs to the technical field of motor control. The method comprises that a present theoretical distance achieved by the execution mechanism according to operation of a motor and a present practical distance collected by a position collector are obtained; a present target operation distance that needs tobe achieved by the execution mechanism according to operation of the motor is re-determined according to the present theoretical distance and present practical distance; a present operation state of the execution mechanism is determined according to the present target operation distance; and a moving speed that needs to be achieved by the execution mechanism is calculated according to the presentoperation state, and the rotating speed of the motor is adjusted according to the moving speed. The present target operation distance is re-determined by updating the target operation distance in realtime in the operation process, the execution mechanism can be controlled to move to a required target position accurately instead of being adjusted to the target position via repeated oscillation, and the operation efficiency of the execution mechanism is improved.
Owner:深圳市雷赛软件技术有限公司 +1

Modular structure mechanical experiment platform system

The invention discloses a modular structure mechanical experiment platform system, which comprises an experiment operation platform, an experiment structure system, a loading device and a measuring device. The experiment structure system comprises standard rod pieces, connecting joints and support parts; the standard rod pieces are basic modules for constituting an experiment structure; the connecting joints are used for being connected with the standard rod pieces to achieve hinged connection or rigid connection between the standard rod pieces; the support parts and the experiment structure are connected through the connecting joints, and the experiment structure is fixed to the experiment operation platform and provided with boundary constraints; the loading device is used for applying loads on the experiment structure and meets the loading condition in current theory teaching; and the measuring device is used for measuring the load, deformation and the internal force mechanical index of the experiment structure. The modular structure mechanical experiment platform system in civil engineering specialty teaching has the advantages of safe operation, high accuracy degree, high designability, comprehensive function, high teaching efficiency and the like, and autonomous teaching of the course experiment part of 'structural mechanics' is achieved.
Owner:SHANGHAI JIAO TONG UNIV

Control method of photovoltaic power station inverter under power rationing condition

A control method of a photovoltaic power station inverter under the power rationing condition includes steps of 1) acquiring the actual total output power and the lowest total output power of this moment and rated output power, accumulative start-stop times and current theoretical output power parameters of various photovoltaic inverters when a power control processing module receives dispatched planned total output power or self-checks at fixed time; 2) starting and stopping the photovoltaic inverters automatically according to strategies and adjusting active power; 3) comparing current real-time total output power with the dispatched planned total output power of the photovoltaic power station, turning to step 5) if difference falls in the allowable error, or turning to step 1), and turning to step 4) if repeated times exceed the preset time; 4) notifying operation and maintenance staff of failure in automatic adjustment within the preset times in a warning manner, and turning to step 5); 5) storing control processes and results in historical records by the power control processing module.
Owner:NARI NANJING CONTROL SYST

Device for measuring electric current density of superconductor with Campbell method

InactiveCN103926454ADetermining the Magnetic Field Penetration DepthCurrent density measurementsMagnetic measurementsControl system
The invention discloses a device for measuring the electric current density of a superconductor with the Campbell method. According to the technical scheme, the device for measuring the electric current density of the superconductor with the Campbell method is mainly formed by a detection device and an output signal processing and storage device. The detection device comprises a detection coil and a reference coil. The output signal processing and storage device comprises a tuning circuit, a voltmeter and a computer, the computer is provided with an auxiliary measuring and control system and used for recording and analyzing data, and electric signals formed in the detection coil and the reference coil are tuned through the external tuning circuit to be sent to the voltmeter and the computer. According to the device, flux changes in the coils are represented through the voltage, the magnetic field penetration depth of the superconductor is accordingly determined, the slope of the relation between the magnetic field penetration depth and the magnetic induction intensity is solved to obtain the superconductivity critical current density, effective signals generated by a sample are detected through the two coils, the accuracy and the reliability are achieved, and the Campbell magnetic measurement current theory is achieved through an enforceable measurement tool.
Owner:HENAN NORMAL UNIV

After-test simulation method for inner and outer fault recognition of ultra-high voltage alternating-current power transmission line based on lumped parameter T model

ActiveCN102288874BRealize judgment and recognitionCorrectly identify remote high-resistance faultsFault locationTime domainUltra high voltage
The invention provides an after-test simulation method for inner and outer fault recognition of an ultra-high voltage alternating-current power transmission line based on a lumped parameter T model and belongs to the technical field of inner and outer fault recognition and protection of an alternating-current power transmission line. An after-test simulation time domain method for inner and outer fault recognition for solving a current response by using an equation i~N=iM-C0*duM / dt+1 / 2*R0*C0*diM / dt+1 / 2*L0*C0*d2iM / dt2 which is met by current zero sequence components on two sides of the line and made according to a Kirchhoff current theory under an outer fault of an ultra-high voltage alternating current power transmission line (the power transmission line is equivalent by using a concentrated parameter T model) in a short data window and an equation which is not met by zero sequence voltage and current components on the fault side under an inner fault is raised. The current on the other side is simulated and calculated by using the actually measured current on one side of the line according to the Kirchhoff current theory; and the current is compared with the relevance of a waveform of the actually measured current, so that the inner and outer faults of the ultra-high voltage alternating current power transmission line can be determined and recognized. The after-test simulation method has the advantages of sensitivity to inner fault recognition, reliability to outer fault recognition and the like, and is suitable for being popularized and used in an ultra-high voltage alternating current power transmission line system.
Owner:KUNMING UNIV OF SCI & TECH

Substation relay protection system measurement link hidden fault detection method

The invention discloses a substation relay protection system measurement link hidden fault detection method, and belongs to the technical field of substation protection. The method comprises the steps of (S1) collecting voltage and current in an SV data transmission network, and obtaining m current sampling voltage Up and m current sampling current Ip in a cycle T; (S2) calculating a mean square error of a current actual power consumption quantity Qp according to the m current sampling voltage Up and the m current sampling current Ip; (S3) judging whether the mean square error of the current actual electricity consumption quantity Qp is larger than an electricity quantity threshold value Delta Q, executing a step (S4) if so, and executing a step (S5) if not, wherein Delta Q=|Q<^>|epsilon, Q<^> is a current theoretic electricity consumption quantity, epsilon is a given setting value; (S4) adding 1 to a counter Y; (S5) setting the counting Y to zero; and (S6) judging whether Y exceeds a maximum number Ymax after n cycles T, and detecting hidden faults of a relay protection device. According to the method, the hidden faults are detected through operating electricity quantity parameters, and the discovery rate of the hidden faults is improved.
Owner:HEFEI POWER SUPPLY COMPANY OF STATE GRID ANHUI ELECTRIC POWER +1

Sewage treatment energy saving control method and control system based on bivariate two-dimensional table

ActiveCN104671462AFlexible control of operating frequencyThe realization cannot change dynamically with the actual water inflowWater treatment parameter controlWater aerationChemical oxygen demandControl system
The invention provides a sewage treatment energy saving control method and control system based on a bivariate two-dimensional table. The sewage treatment energy saving control method and control system are used to adjust the output frequency and practical working table number of air blowers reasonably according to the sewage flow and the change of chemical oxygen demand in water. The control method comprises the steps of establishing a bivariate two-dimensional table n that takes gradually increasing water inflow Q and water chemical oxygen demand P as variables respectively to simultaneously intercept current water inflow Q' and current water chemical oxygen demand P' at regular intervals; and acquiring the theoretical output frequency value fij of the current air blowers and the theoretical working table number n of the air blowers according to cross positioning carried out on Q' and P' in the bivariate two-dimensional table n; carrying out real-time adjustment on the output frequency and the practical working table number n' of the air blowers according to the current theoretical output frequency value fij and the theoretical working table number n. The control method and control system have the beneficial effects of realizing the frequency control of intelligent control air blowers, and avoiding incomplete sewage treatment when the frequency of the air blowers is too low or the waste of resources caused when the frequency of the air blowers is too high.
Owner:BEIJING JINKONG DATA TECH

A photovoltaic equipment operation analysis method

The invention discloses a photovoltaic equipment operation analysis method in the technical field of photovoltaic equipment analysis. The method includes: the installation information of the power station and the total quantity of all photovoltaic generating sets are counted, The illumination data are obtained every three months by a high precision irradiator, for historical weather data and historical generating capacity of the power station, in combination with the illumination data of different historical weather with the installation theory data for many times, the current theoretical power generation efficiency of the power station is calculated, the theoretical power generation efficiency is compared with the measured power generation efficiency, according to future weather forecasts, in combination with the light intensity of corresponding season and weather, the power generation quantity of the power station is calculated, and the actual loss value is subtracted to predict thefuture power generation quantity of the photovoltaic power station. The prediction of the power generation quantity can be accurate to hours, the power generation quantity of a day can be accurately actuarially calculated, the calculation data are more practical, and the utilization rate of energy can be improved.
Owner:浙江电腾云光伏科技有限公司

Method for controlling photovoltaic power station inverter under limited power conditions

Disclosed is a method for controlling a photovoltaic power station inverter under limited power conditions. The method comprises a first step of obtaining actual output total power and theoretical minimum output total power at the moment, and rated output power, cumulative start and top times and current theoretical output power parameters of each photovoltaic inverter when a power control processing module receives dispatched planned output total power or timed auto inspection; a second step of automatically starting and performing active power regulation for the photovoltaic inverters according to strategies; a third step of comparing the current real-time output total power and the dispatched planned output total power, if the difference is within an allowed range, then going to a fifth step, otherwise returning back to the first step, and if the number of cycles in this round exceeds a preset number of times, then going to a fourth step; the fourth step of informing maintenance personnel in an alarm way that automatic regulation fails in the preset number of times, and going to the fifth step; and the fifth step of the power control processing module saving the control process and results in the form of history.
Owner:NARI NANJING CONTROL SYST

Method for acquiring unknown information by using quantum technology

The invention provides a method for acquiring unknown information by using a quantum technology. The method comprises the following steps: preparing an initial state of a single quantum system; putting the single quantum system into an unknown information system through kth preset quantum operation so as to parameterize the single quantum system into a parameterized quantum system; measuring the parameterized quantum system to obtain the current actually measured quantum state of the parameterized quantum system; measuring the parameterized quantum system through theoretical quantum measurement operation to obtain the current theoretical quantum state of the parameterized quantum system; if the current actual measurement quantum state is different from the current theoretical quantum state, obtaining an average deviation of an observation error to observation precision, the average deviation being an average deviation of k times of the current actual measurement quantum state and the current theoretical quantum state; and if the average deviation is smaller than a preset error, obtaining the current quantum state of the parameterized quantum system through an imperfect quantum detection method.
Owner:CHINA ACADEMY OF SPACE TECHNOLOGY

Primitive cell scattered type electro-magnetic forbidden band structure

The invention discloses an electromagnetic forbidden zone structure with an original cell discrete type, which comprises a parasitic element array, an earth plate, and a dielectric layer. The dielectric layer is arranged between the parasitic element array and the earth plate; the parasitic element array includes a plane photon crystal array; a plane photon crystal is a plane spiral photon crystal; a cycle original cell of the plane spiral photon crystal is intertwined by a helix; the helixes of the neighboring original cell are mutually isolated; the helix comprises more than one spiral wire and each spiral wire is intertwined symmetrically; the original cells of the plane spiral photon crystal present such shapes as a square, an equilateral triangle, a regular hexagon, etc. The pattern size of the cycle original cell provided by the invention is determined by an applied frequency scope. A linear relationship is formed when same substrate material is used and an accurate design can be made based on the current theory.
Owner:SHANGHAI FANGSHENG INFORMATION TECH

Primitive cell communicate -type electro-magnetic forbidden band structure material

The invention discloses material with an electromagnetic forbidden zone structure of an original cell connected type, which comprises a parasitic element array, an earth plate, and a dielectric layer. The dielectric layer is arranged between the parasitic element array and the earth plate; the parasitic element array includes a plane photon crystal array; a plane photon crystal is a plane complementary spiral photon crystal; a cycle original cell of the plane complementary spiral photon crystal consists of a spiral-shaped gap which is periodically hollowed out by a substrate; and the spiral-shaped gap comprises at least one spiral gap or a plurality of spiral gaps. Each spiral gap is intertwined symmetrically and each spiral gap is mutually unconnected; and the original cells of the plane complementary spiral photon crystal present such shapes as a square, an equilateral triangle, a regular hexagon, etc. The pattern size of the cycle original cell provided by the invention is determined by an applied frequency scope. A linear relationship is formed when same substrate material is used and an accurate design can be made based on the current theory.
Owner:SHANGHAI FANGSHENG INFORMATION TECH

Automatic calibration method and equipment for electronic temperature measurement equipment having micro-control unit

The invention relates to an automatic calibration method and equipment for electronic temperature measurement equipment having a micro-control unit. The electronic temperature measurement equipment having the micro-control unit is in the preset constant temperature test environment. The automatic calibration method of the automatic calibration equipment comprises steps that (1), the present theoryreference oscillation frequency XRF of a built-in reference resistor is taken as basis by the electronic temperature measurement equipment, and the test oscillation frequency XRS of a present test resistor is determined; (2), calculation is carried out through the micro-control unit according to an equation set as described in the specifications; (3), the actual oscillation frequency X'RF of thereference resistor is solved based on the equation set of the step (2); and (4), the actual oscillation frequency X'RF of the reference resistor is utilized to replace the present theory reference oscillation frequency XRF of the system built-in reference resistor, the actual oscillation frequency X'RF is taken as the new present theory reference oscillation frequency and stored in the micro-control unit, and calibration work of the electronic temperature measurement equipment is accomplished. The method and the equipment are advantaged in that calibration of the electronic temperature measurement equipment can be effectively carried out, efficiency is high, and cost is low.
Owner:CRM ICBG (WUXI) CO LTD

Method for lifting deep ocean water rich in nutritive salts by controlling air bubble curtain

InactiveCN105093924AOptimum gas injection volumeReduce energy consumptionAdaptive controlEngineeringInjection air
The invention discloses a method for lifting deep ocean water rich in nutritive salts by controlling an air bubble curtain. The method belongs to the technical field of manually lifting current. The invention overcomes the deficiency of the manual lifting current theory in the prior art by providing such a controlling method to lift deep ocean water rich in nutritive salts with different flows and densities. The method controls the air bubble curtain in a manually lifting current to lift the height of deep ocean water rich in nutritive salts so that the deep ocean water rich in nutritive salts can be effectively captured at a density surface. Based on the method, it is possible for a performer to effectively adjust for a best air injection amount according to different ocean conditions, and therefore, energy consumption is reduced, gains are increased, and assistance is provided to scientists for them to carry out manually lifting current.
Owner:ZHEJIANG UNIV

A high-voltage DC circuit harmonic impedance analytical equivalent model and frequency analysis method

ActiveCN106451522BThe analysis process is accurate and rigorousImprove efficiencyElectric power transfer ac networkCapacitanceTransformer
An embodiment of the invention discloses a high-voltage direct-current circuit harmonic impedance analysis equivalent model and a high-voltage direct-current circuit harmonic impedance frequency analysis method, aiming to solve the problems that a harmonic current path in a typical converter model is limited between a converter transformer and a valve bridge, stray capacitance to ground of converter transformer sleeves is ignored, and a large difference exists between a design result and an actual measurement result of the model based on a direct-current-side harmonic current theory. The high-voltage direct-current circuit harmonic impedance analysis equivalent model comprises a current converter adopting a three-pulse converter model, and the three-pulse converter model comprises a leakage current path and a converter bridge. The high-voltage direct-current circuit harmonic impedance analysis equivalent model is more accurate by taking the nature that harmonic waves are reflected by 3n times under the effect of commutation induction of the leakage current path and the converter bridge into consideration; the influences of an alternating-current system and an alternating-current filter on high-voltage direct-current circuit resonance characteristics are taken into account, so that an analysis process of the high-voltage direct-current circuit resonance characteristics is more accurate and rigorous, and results are more reliable.
Owner:ELECTRIC POWER RES INST OF GUANGDONG POWER GRID

Cartesian coordinate robot control method and control device

The embodiment of the invention discloses a control method and a control device for a Cartesian coordinate robot. One specific implementation mode of the method comprises the following steps: obtaining initial position information and target position information of the robot in response to a received operating control instruction; determining initial reference position information and target reference position information of the robot in an established reference coordinate system; and executing the following control steps: obtaining current actual position information and current theoretical position information of the robot to determine the current reference position information of the robot, and determine whether the current reference position information is the target reference position information in the first coordinate axis direction; and in response to determination that the current reference position information is not the target reference position information, by taking the current reference position information as the initial reference position information, continuously executing a control step. The implementation mode can implement that during operation of the robot, an error produced in the first coordinate axis direction can be dynamically compensated, so that the operation efficiency is improved.
Owner:BEIJING JINGDONG QIANSHITECHNOLOGY CO LTD

A hidden fault diagnosis method for substation relay protection based on multi-dimensional mixed quantity

The invention discloses a substation relay protection hidden fault diagnosis method based on multidimensional mixture, which belongs to the technical field of substation protection. The method comprises the following steps: S1, collecting multidimensional parameters in an SV data transmission network, including m current sampling voltages Up and m current sampling currents Ip collected in a period T; S2, calculating the mean square error of the current actual electricity consumption Qp according to the m current sampling voltages Up and the m current sampling currents Ip; S3, judging whether the mean square error of the current actual electricity consumption Qp is greater than an electricity threshold Delta Q; if the mean square error of the current actual electricity consumption Qp is greater than the electricity threshold Delta Q, performing S4; and if the mean square error of the current actual electricity consumption Qp is not greater than the electricity threshold Delta Q, performing S5, wherein Delta Q=|Q-^|*Epsilon, Q-^ is the current theoretical electricity consumption, and Epsilon is a given setting value; S4, adding 1 to a counter Y; S5, resetting the counter Y to 0; and S6, after n periods T, when judging that Y exceeds a set maximum number Ymax, detecting that a relay protection device has a hidden fault. A hidden fault is detected by running electrical parameters. The detection rate of hidden faults is increased.
Owner:HEFEI POWER SUPPLY COMPANY OF STATE GRID ANHUI ELECTRIC POWER +1

Separation method and system for transverse wave propagation in crack

ActiveCN106168678AThe analysis operation process is simpleImprove accuracySeismic signal processingNatural coordinate systemTransverse wave
The present invention provides a separation method and system for transverse wave propagation in a crack. A collection coordinate system is rotated according to a setting angle, and if the rotation angle of the collection coordinate system is namely a fast wave polarization azimuth, the collection coordinate system is overlapped with a natural system of coordinates. If the rotation angle of the collection coordinate system is [Beta], the radial component R(t) after rotation is namely a slow wave component, and the transverse component T(t) is namely a fast wave component. Meanwhile, the energy ratio of the fast wave component and the slow wave component is an energy ratio of the radial component R(t) and the transverse component T(t) obtained through measurement, and the ratio should be equal to the tangent value of the crack direction azimuth. Through taking the relation mentioned above as a theoretical basis, it is analyzed whether the energy ratio of the radial component R(t) and the transverse component T(t) obtained through measurement after the collection coordinate system is rotated is equal to the tangent value of the rotation angle or not, and when the energy ratio of the radial component R(t) and the transverse component T(t) obtained through measurement after the collection coordinate system is rotated is equal to the tangent value of the rotation angle, the rotation angle is defined as the polarization azimuth of the fast wave. The separation method and system for transverse wave propagation in the crack are simple in the analysis operation process, fit into the current theory and have high accuracy.
Owner:CHINA UNIV OF MINING & TECH (BEIJING)

Current fitting curve sudden change elimination method for liquid/liquid interface scanning electro-chemical microscope

The invention relates to an elimination method of the jump of a current fitting curve by a scanning electrochemical microscope on a liquid / liquid interface, comprising the steps as follows: (1) a liquid / liquid interface is established; (2) the probe of the scanning electrochemical microscope extends into an organic phase containing reduction-state species and is close to the liquid / liquid interface; the distance d from the probe to the interface and the current value of the probe are recorded; furthermore, the relationship curve between the distance d and the current value of the probe is established; (3) the distance d is standardized as L and the standardized probe current I<T><k> is fit; (4) the relationship curve of fit standardized distance and standardized current is established; (5) discrete wavelet transformation is carried out to the signals (L is more than 2) so as to extract the similar and detailed components; and (6) a minimum average detail discrete wavelet transformation method is used for eliminating the fitting current jump which is generated when L is more than 2. The invention provides the minimum average detailed discrete wavelet transformation method by the discrete wavelet transformation method, which solves the fitting current jump problem of the standard current theory fitting curve of the liquid / liquid interface at large standard distance value.
Owner:NORTHWEST NORMAL UNIVERSITY

A method and system for separating shear waves propagating in a crack

ActiveCN106168678BThe analysis operation process is simpleImprove accuracySeismic signal processingNatural coordinate systemTransverse wave
The present invention provides a separation method and system for transverse wave propagation in a crack. A collection coordinate system is rotated according to a setting angle, and if the rotation angle of the collection coordinate system is namely a fast wave polarization azimuth, the collection coordinate system is overlapped with a natural system of coordinates. If the rotation angle of the collection coordinate system is [Beta], the radial component R(t) after rotation is namely a slow wave component, and the transverse component T(t) is namely a fast wave component. Meanwhile, the energy ratio of the fast wave component and the slow wave component is an energy ratio of the radial component R(t) and the transverse component T(t) obtained through measurement, and the ratio should be equal to the tangent value of the crack direction azimuth. Through taking the relation mentioned above as a theoretical basis, it is analyzed whether the energy ratio of the radial component R(t) and the transverse component T(t) obtained through measurement after the collection coordinate system is rotated is equal to the tangent value of the rotation angle or not, and when the energy ratio of the radial component R(t) and the transverse component T(t) obtained through measurement after the collection coordinate system is rotated is equal to the tangent value of the rotation angle, the rotation angle is defined as the polarization azimuth of the fast wave. The separation method and system for transverse wave propagation in the crack are simple in the analysis operation process, fit into the current theory and have high accuracy.
Owner:CHINA UNIV OF MINING & TECH (BEIJING)

Duct type vortex balance wind power generator special for electric airplane

The invention discloses a duct type vortex balance wind power generator special for an electric airplane, and belongs to the technical field of wind power generation. In history, due to gene defects of a generator structure, the technology of an electric airplane consuming electric energy and the technology of a generator producing the electric energy are independently developed in the two technology fields all the time. According to the duct type vortex balance wind power generator, through explanation and analysis on third motion law acting force and counter acting force, technology innovation is conducted on structural design of a conventional wind power generator by utilizing the balance force theoretical perspectives, and the technology character that air resistance generated during flight of the electric airplane is used for wind power generation is utilized. During flight of the electric plane, the electric energy is supplemented to the electric airplane in a self-generation andself-usage circulation manner, and the flight duration of the electric airplane is prolonged. The duct type vortex balance wind power generator is obviously contradictory to the theory of the energyconservation law since in the current theory background period. But through the invention of the technical scheme, it is sufficiently shown that sustainable use of clean energy is achieved by utilizing the action of balance force inner energy.
Owner:陆继荣

Real-time evaluation method, device and process tower for operating efficiency of process tower

ActiveCN104076795BOvercoming the defects of monitoring the running statusOvercoming the shortcomings of monitoringTotal factory controlProgramme total factory controlProcess engineeringTower
The invention relates to a real-time evaluation method, device and process tower for operating efficiency of a process tower. The method includes: step 1, setting the calculation cycle and theoretical operating efficiency; step 2, obtaining the output and energy consumption of the process tower in real time; step 3, calculating the current moment of the process tower according to the output, energy consumption and calculation cycle of the process tower Operating efficiency; step 4, calculate the difference between the operating efficiency at the current moment and the theoretical operating efficiency, and obtain the operating efficiency deviation; step 5, judge the relationship between the operating efficiency deviation and the set first threshold, if the operating efficiency deviation If the value is greater than the first threshold, the energy consumption deviation value between the energy consumption of the process tower at the current moment and the theoretical energy consumption is calculated. The invention can monitor and evaluate the operation efficiency of the process tower, which is an important link in the chemical production device, in real time, thereby overcoming the defect that the operation state of the process tower can only be monitored in the prior art.
Owner:BLUESTAR BEIJING TECH CENT
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products