133results about How to "Shorten the research cycle" patented technology

The invention relates to a method of developing SNP (single nucleotide polymorphism)-SSR (simple sequence repeat) molecular makers closely linked with SNP by utilizing SNP. The method comprises the following steps of: (1) finding according to a position of a known SNP molecule of a to-be-developed sample on a genetic map to obtain an SNP marker extending sequence; (2) comparing the SNP marker extending sequence in a genome sequencing database of the to-be-developed sample, and selecting a sequence segment; (3) feeding complete type, incomplete type and composite type SSR to obtain SSR locus based on repetitive sequence length not less than 20bp; (4 designing primers according to flanking regions of SSR lotus, selecting the primers with stable and clear banding patterns through PCR (polymerase chain reaction) amplification and sequencing to obtain a to-be-verified molecular marker; and (5) preparing the SNP-SSR molecular marker by utilizing the primer of the to-be-verified molecular marker. The method disclosed by the invention can quickly and greatly screen out SNP-SSR molecular markers closely linked with the SNP.

The invention discloses a testing system for the long-time creep property of an explosive. The testing system comprises a control console, a temperature control system, a loading system and test beds,wherein the temperature system and the loading system are connected with the control console, and the test beds are connected with the temperature control system and the loading system; creep testingunits are arranged on the test beds and installed in a sealed transparent cover, and a temperature control device is arranged below the transparent cover and connected with the temperature control system; the creep testing units are further connected with the loading system; and a temperature sensor is arranged in the transparent cover, load sensors and displacement sensors are arranged on the creep testing units, the temperature sensor, the load sensors and the displacement sensors are all connected to a testing control box, and the testing control box controls temperature adjustment of thetemperature control device and pressure loading adjustment of the loading system and achieves information transmission with the control console through a communication line. The invention further provides a testing method for the long-time creep property of the explosive. According to the testing system and testing method for the long-time creep property of the explosive, the cost can be significantly reduced, the research cycle is shortened, and the huge application value is achieved.

The invention refers to a real-time latent-image self-monitoring method in the course of making a holographic grating. It uses arbitrary interference recording light beam of the light intensity acting on the grating as the real-time sub-image self-monotiring incident light beam, and when the ratio of the wavelength of the incident light beam and the period of the grating lambda/d<2/3, the gratinghas multiple diffraction levels, it real-time self-monitors the light beam outside the system collimated and photoelectricly multiplied in the transmission direction of self-diffractions Ir2 and Ir1 of arbitrary level sub-image, or real-timely self-monitors the autocollimating level returning according to the original route filtered, collimated and photoelectricaly multiplied.

The invention discloses a loader testing experiment table based force sensor arranging method. The method includes steps of A, arranging a fixed board and a quick connection board parallel to each other, wherein the rear wall of the fixed board is connected with the front wall of the quick connection board through n three-dimensional force sensors; B, arranging n three-dimensional force sensors onthe rear wall of the fixed board in advance and calibrating pre-arrangement positions of the three-dimensional force sensors; C, applying pressure on a front working component of a loader, wherein each three-dimensional force sensor can display force magnitude and direction of a test point directly and the magnitude and the direction of the applied force can be obtained through calculation. The invention also discloses a testing method for operation resistance of working components of the loader after arrangement of the loader testing experimental table and the force sensors. According to theinvention, performance test study or measurement can be performed on the selected front end working component.

The invention discloses a wind turbine simulator of a double salient pole motor and a control method thereof, which belong to the wind turbine simulator and the control method thereof. The wind turbine simulator of the double salient pole motor comprises a double salient pole motor, a main power circuit and a control circuit, wherein the main power circuit comprises a power supply and an IPM, and the control circuit comprises a buffer circuit, a failure detector circuit, a current and voltage sampling circuit, a position detecting circuit, a PWM control circuit, an overcurrent and overvoltage protection circuit, an ADC module, a rotating speed computing circuit, a logic control circuit, a torque observer, a capturing unit, a torque loop, a lag loop comparer and a mathematical model of the wind turbine. The control method adopts the manner of double loop control with the inner loop for the torque and the outer loop for the rotating speed, and the current of the double salient pole motor is indirectly controlled through comparing the reference torque with the fedback torque, so as to realize the simulation of the wind turbine. The invention has the advantages that the structure is simple, the force is large, various wind speeds under conditions such as a wind tunnel or a wind field can be simulated, and the invention has large flexibility.

The invention relates to a method for establishing and simulating an aerobic composting model. The method comprises the following steps: 1) establishing the aerobic composting model; 2) according to a ''mass-heat-momentum'' coupling transfer mechanism in an aerobic composting reaction process, assuming the aerobic composting model, calculating entrance and exit flow velocity according to an entrance mass flow rate, and utilizing a dimensionless Reynolds number to judge that a fluid movement state is turbulence; 3) according to the Fick law, the Fourier law and a k-Epsilon turbulence equation, constructing a mass transfer equation, a heat transfer equation and a momentum transfer equation; 4) determining the boundary condition of the aerobic composting model; 5) determining an initial condition, and carrying out geometric modeling and mesh generation on a specific model object on an ANSYS platform according to the steps 1)-4); and 6) utilizing a CFD (Computational Fluid Dynamics) Post module to carry out simulation calculation on the aerobic composting model in ANSYS FLUENT to obtain an aerobic composting simulation model. The method can describe the problem of the spatial distribution of temperature and oxygen concentration in an aerobic composting reaction process.

The invention discloses a wind-power-generation digital physical hybrid simulation system based on an RTDS and a method thereof. The simulation system can realize pure RTDS wind power generation system simulation and can realize digital physical hybrid RTDS wind power generation system simulation. The system is formed by a pure RTDS wind power generation simulation system and a digital physical hybrid RTDS wind power generation system. The pure RTDS wind power generation simulation system is realized in RTDS RSCAD software. A simulation controller, a main-circuit mathematical model of a wind power generation system and a simulation power grid model are included. The digital physical hybrid RTDS wind power generation simulation system is formed by the RTDS RSCAD software, an interface card and physical equipment. In the invention, through a variety of modes of simulation, the wind power generation system is integrally analyzed; and in a physical platform, performance of a control strategy is tested and debugged, and a control parameter and the control strategy can be corrected in real time so that an important practice basis is provided for a practical engineering design.

The invention relates to the field of complex spacecraft control technologies and simulation verification, and aims to perform real-time simulation verification and achieve the purpose of verifying the real-time performance, safety and reliability of a designed control algorithm. Therefore, the technical scheme adopted by the invention is a spacecraft attitude stability control real-time simulation verification and three-dimensional demonstration method, which comprises the following steps: 1, finite time control algorithm design under input constraints: designing a finite time additional system dynamic state, and designing a controller by combining backstepping control on the basis to realize finite time attitude stability control of a spacecraft; 2, structural design and construction ofa spacecraft real-time simulation platform: performing structural design and construction work of the spacecraft real-time simulation platform according to the control algorithm verification requirement and the spacecraft control structure proposed in the step 1; and 3, design and realization of spacecraft master control software. The method is mainly applied to complex spacecraft control design occasions.

The invention relates to a preparation method of a graphdiyne-like substance. The method includes: with cuprous iodide being a substrate, performing a coupling reaction to hexaalkynyl benzene under catalysis by the cuprous iodide in a solvent; removing the cuprous iodide with ammonia water through corrosion, and performing centrifugal separation and drying, and grinding the product to obtain the graphdiyne-like powder product. The method can prepare the graphdiyne-like substance at large scale, shortens the researching period of the graphdiyne in other fields, and makes the graphdiyne possibleto be applied to other fields.

The invention provides a method for obtaining critical charge of single event upset of nanometer static random access memory based on simulation, which comprises the following steps of establishing adevice model of the nanometer static random access memory; obtaining the butterfly characteristic curve of the device model; calibrating the butterfly characteristic curve; constructing the geometricstructure model of static random access memory; setting initial incident conditions of low energy protons and initial bias voltage of device model; and obtaining the energy deposition data of low energy protons in the device geometry model; obtaining a physical model of carrier production rate caused by single event effect of low energy protons; obtaining the single particle response curve of thedevice model; obtaining the single event effect sensitivity depth of the device model; adjusting low-energy proton incident conditions and/or device model bias voltage until single event upset occursin the device model; and calculating the SEU critical charge of nano-SRAM. The method of the invention improves the obtaining efficiency of the critical charge of the single event upset, has low costand good executability.

The invention discloses a shield tunnel segment mould capable of manufacturing multiform tenons. The shield tunnel segment mould comprises a standard block mould, a first adjacent block mould, a second adjacent block mould and a capping block mould. The standard block mould, the first adjacent block mould, the second adjacent block mould and the capping block mould separately comprise base plates,end head plates correspondingly connected to the two ends of the base plates in a matched mode, lateral plates and top plates, and mould cavities used for pouring segments are enclosed by the base plates, the end head plates, the lateral plates and the top plates. The base plates are provided with longitudinal joint steel moulds and circumferential joint steel moulds, the lateral plates are connected with the end portions, far away from the base plates, of the longitudinal joint steel moulds, and the end head plates are connected with the end portions, far away from the base plates, of the circumferential joint steel moulds. Tenon changing blocks are arranged on the lateral plates, and location holes are formed in the end head plates. The shield tunnel segment mould capable of manufacturing the multiform tenons can produce different forms of tenons and different forms of circumferential joints and longitudinal joints, and through arbitrary combinations of the different forms of tenonsand the different forms of circumferential joints and the longitudinal joints, so that a plurality of different forms of segments are formed. The shield tunnel segment mould capable of manufacturingthe multiform tenons has high operability.

The invention discloses a seed germination test assistant decision making system based on single chip microcomputer control, which comprises a germination process monitoring module, a germination research assistant decision making module, a germination test intelligent controller, a germination room and a database module, wherein the germination process monitoring module is used for monitoring real-time data of temperature, humidity, light and moisture of the germination room, transmitting preset germination test control parameters to the germination test intelligent controller and enabling the germination test intelligent controller to execute intelligent control on the germination test of the germination room; the germination research assistant decision making module can not only assist a researcher to carry out optimization decision making and verification on seed germination condition parameters in combination with the germination test intelligent control through test data analysis but also assist the researcher to carry out significance difference analysis on sample test data of an optimization germination scheme to acquire test of statistical significance. The system helps the researcher to get rid of a complicated data statistics process, the efficiency is improved, the research period is shortened, and informatization of the whole seed germination research process is completed.

The invention provides a hypersonic aircraft fuel tank temperature field prediction method based on a point cloud network. The hypersonic aircraft fuel tank temperature field prediction method comprises the following steps of S1, obtaining shape features, material composition and working condition variables of a hypersonic aircraft fuel tank; s2, according to the heat transfer layering condition of the fuel tank, grid division is carried out, and boundary conditions are set; establishing a numerical simulation model for three-dimensional heat transfer of the fuel tank and verifying the numerical simulation model; s3, temperature field point cloud data on the longitudinal section of the middle position of the numerical simulation model are selected, and a point cloud sample data set of the fuel tank temperature field is established; s4, dividing a training data set and a test data set based on the point cloud sample data set; s5, establishing a point cloud network model, performing training verification on the point cloud network model by using the training data set and the test data set, and obtaining a temperature field prediction model based on the point cloud network; and S6, predicting the temperature field by using the temperature field prediction model.

The utility model relates to a test platform of a multifunctional pressure oscillating tube with openings at both ends, which belongs to the technical field of high and low pressure gas pressure exchange and cold and heat separation. The test platform provides a multifunctional pressure oscillation tube test platform with both ends openings that takes into account the influence between the tubes, the flow field can be measured, the diameter and length of the tube can be adjusted, the tube shape can be changed, and it can be used for actual gas research. Its main body is composed of four parts: a shell, a central shaft, a cavity turntable, and a pressure oscillation tube with openings at both ends. It can meet the flow field test needs under different pipe diameters, pipe lengths, pipe shapes and multi-pipe requirements, provide accurate data for related mechanism research, provide basis for optimizing related structures and improving the performance of air wave machines, reduce research costs, shorten Research cycle; it can be used for experimental research with natural gas as the medium, and provide more accurate experimental data for the design and optimization of gas wave machines for natural gas exploitation, gathering and transportation. The platform is simple in structure and easy to operate, and can be used not only for experimental research, but also for small-scale refrigeration and pressurization occasions.

The invention discloses a method for controlling the corrosion depth of porous silicon and relates to a porous silicon material. The method comprises the following steps: 1) putting a silicon wafer into a H2SO4-H2O2 mixed solution and heating; taking out the silicon wafer and repeatedly flushing by hot water and then cold water; putting the silicon wafer in a HF-H2O mixed solution and shaking; removing residual oxide on the surface of the silicon wafer; and taking out the silicon wafer and flushing and drying by blowing; 2) performing magnetron sputtering of an Al film on the non-polished surface of the silicon wafer obtained in the step 1), wherein the Al film is connected with the anode of a direct-current power supply; 3) enabling the surface of the Al film obtained in the step 2) to be contact with the bottom of an electrolytic cell so as to connect the anode of the direct-current power supply, and inserting metal platinum into the electrolyte as a cathode, wherein porous silicon is obtained after corrosion; and 4) flushing the sample obtained in the step 3), and drying to obtain porous silicon.

The invention discloses an optimization method for an automobile hydraulic torque converter. Primary optimization and secondary optimization are carried out based on a unitary beam theory calculation model. The method has the advantages that the primary optimization is modifying parameters in the unitary beam theory calculation model, thereby improving calculation precision of the calculation model; and the secondary optimization is optimizing comprehensive performance of the hydraulic torque converter.

The invention belongs to the technical field of a fixed-wing aircraft and particularly relates to a fixed-wing aircraft landing gear and tail hook dynamic load coupled analytic method. The fixed-wing aircraft landing gear and tail hook dynamic load coupled analytic method is characterized in that on the basis of an overall landing configuration and geometric layout parameters of the aircraft, a landing gear and tail hook kinematical/ kinetic equation is established, and by the parametrization design of an oil-air type damper and parameter regulation iteration re-inspection in the software environment, the multi-body dynamic modeling and numerical analysis work of a plurality of subsystems such as an aircraft tail hook and a landing gear is completed. Interactive influence of a load and vibration of each subsystem in a combined state is calculated so as to implement coupling research. A steady state component and a dynamic component of the load of a certain subsystem under the coupled condition are analyzed and are compared with a dynamic load simulated test result in a separated state; difference and a sensitive parameter are discriminated; a coupling/decoupling research method and a tail hook oscillation and main landing gear load oscillation peak shifting avoidance design method are given.

A dry crop wet damage identification device comprises a water supply pipe, a water storage tank, a water level monitoring unit and a water pump, wherein the water supply pipe and the water storage tank are arranged in a test area; and the water level monitoring unit and the water pump are arranged outside the test area. The water level monitoring unit is used for detecting and controlling water level in the water storage tank; and a water flow channel is arranged in the test area. The dry crop wet damage identification device has the advantages that through the design of the dry crop wet damage identification device, the water level can be controlled automatically according to actual requirements so as to achieve waterlogging stress treatment of different degrees, and the requirements on moisture needed for normal growth of crops can be met by automatically controlling the height of underground water level during a non-waterlogging treatment period; that is, on the premise that the natural characteristics of soil of a planting area are maintained, wet damage research is performed on various dry crops, measurement errors of soil temperature and structure are avoided, and a research period is shortened. Through the design of an operation area, the interference of human factors is reduced, moisture permeate from bottom to top, and the problem that root systems are directly subject to impact due to water supply on the earth's surface, so that soil hardening is caused is solved.