58results about How to "Improve the level of research and development" patented technology

The invention provides a device for measuring the damping ratio of a damper, belonging to the technical field of space application equipment. The device comprises a measuring support, an rzeppa synchronizing universal coupling, a magnetic fluid sealing device, a coupling, a torque sensor, a loading device, a sensor support, a base, a temperature controller and an angle coder, wherein both the loading device and the sensor support are fixedly connected with the base; the torque sensor is connected with the loading device and the magnetic fluid sealing device; the rzeppa synchronizing universal coupling is connected with the measuring support; and the measurement data measured by the torque sensor and the angle coder is accessed to a PC (personal computer) machine via a data wire to acquire the measurement data. The device of the invention is capable of measuring the damping ratio of a damper assembly at minus100 to 70 DEG C and working stably within the vacuum, high-temperature or low-temperature environment; the device has the advantages of high measurement accuracy and high load matching performance; and the torque sensor has low temperature drifting.

The invention discloses a method for acquiring a vehicle typical working condition, and the method is used for efficiently and accurately acquiring the vehicle typical working condition. The method comprises the following steps of: collecting GPS (Global Positioning System) information and operating characteristic data in a vehicle running process; converting longitude and latitude data in a vehicle running road section into road information of the vehicle running road section according to the received GPS information; receiving and storing the vehicle information, the road information and the corresponding operating characteristic data; sectioning the operating characteristic data which are continuous in time and consistent in vehicle information and road information; establishing an average vehicle speed spectrogram, subsection vehicle speed spectrograms, an average rotation speed spectrogram, subsection rotation speed spectrograms, an average torque spectrogram and subsection torque spectrograms under the conditions of different vehicle information and different road information; and determining the typical working condition corresponding to the vehicle information and the road information. The invention further discloses a system for acquiring the vehicle typical working condition.

The invention discloses a fan authentication test system analysis platform. For fan authentication test analysis software developed based on FAMOS, BLADED and MATLAB, five modules, namely a data analysis module, a power test module, a performance test module, a load test module and a system identification module are distinguished; mainly aimed at professional equipment based on GL/IEC standards, data formats and IEC test standard specification requirements are tested; and according to the GL/IEC standards, a test report is automatically made. The platform can realize not only functions of test data calibration, captured matrix analysis, sector screening, scattered point curve graph analysis, load rain-flow analysis, time-domain spectral analysis, test and simulation analysis comparison, theoretical simulation model system identification and the like but also automated generation of a fan performance test analysis report, a power test analysis report and a load test analysis report in a GL-D professional format. Moreover, the wind generator unit authentication test data processing is more systematized and modularized.

The invention provides a double-hob experiment table cutter system and relates to an experiment cutter system. The cutter system can achieve bidirectional position adjustment and is characterized in that: the design of a hob rack can meet the requirement of mounting three types of hobs of 14 inches, 17 inches and 19 inches for experiment; the hobs are mainly arranged on flanges on both sides and a bottom supporting flange; two annular surfaces inside and outside a side face flange are connected with the hob rack to bear lateral impact load; the flanges are connected with a tool apron through bolts; the distance between the hob racks is adjusted by using a manual driving screw rod in an X direction and a Y direction which are vertical to each other, wherein the adjustment in the X direction is from -10 millimeters to 150 millimeters; the adjustment in the Y direction is from 300 millimeters to 500 millimeters; and the Y direction tool apron which bears main load is adjusted and locked through cooperation between the tool apron and saw-shaped threads on a cutter head pedestal. After the cutter system is applied in the hob experiment table, a measuring cell can be arranged to test hob stress and research rock breaking mechanism and cutter abrasion.

The invention discloses a marine application Stirling power generation nuclear reactor power supply system, and belongs to the technical field of nuclear reactor engineering. The marine application Stirling power generation nuclear reactor power supply system comprises a reactor core, a heat conduction heat pipe, a Stirling engine, a heat dissipation heat pipe, a pressure-resistant shell and a protection container, the reactor core and the Stirling engine are correspondingly arranged and are arranged in the pressure-resistant shell; the outer side of the reactor core is coated with a shieldinglayer; the heat conduction heat pipe is divided into an evaporation end and a condensation end, the part, penetrating through the shielding layer and inserted into the reactor core, of the heat conduction heat pipe is set as the evaporation end, and the part inserted into the Stirling engine is set as the condensation end; the heat dissipation heat pipe is arranged between the cold end of the Stirling engine and the pressure-resistant shell; the protection container sleeves the outer side of the pressure-resistant shell to form an annular flow channel, and a seawater outlet is formed in the top end of the protection container and communicated with the annular flow channel. The nuclear reactor power supply system is applied to the marine environment and can provide long-term underwater power supply, the research and development level of deep sea equipment can be improved, and the research and development period can be shortened.

The invention relates to a manned spacecraft remote test system. The manned spacecraft remote test system comprises multiple remote test front-end subsystems which are arranged in a manned spacecraftassembly center or a manned spacecraft launch center and used for receiving the field data from the tested manned spacecraft; and a remote test processing and monitoring subsystem which is arranged ina manned spacecraft test command center and communicates with multiple remote test front-end subsystems through a remote network and is used for receiving the field data from multiple remote test front-end subsystems in real time and analyzing and processing the field data. The occupation contradiction of manpower and material resources can be effectively solved so that the launch efficiency canbe enhanced, the launch cost can be reduced and multi-spacecraft and multi-area comprehensive test tasks can be met.

The invention discloses a method and a system for estimating the credibility of a simulation system. The method for estimating the credibility of the simulation system comprises the following steps of: 10, determining a real case set used for comparison estimation; 20, calculating the credibility of each case in the real case set; and 30, weighting the credibility of each case in the real case set, and thus obtaining the credibility of the simulation system. By the method, the credibility of a large-scale simulation system can be estimated, a policy risk based on simulation is effectively reduced, heavy loss probably caused by the credibility is avoided, and the development level of the simulation system is promoted.

The invention discloses a high-throughput, high-content and parallel imaging device and a screening system for biological cell chips. The high-throughput, high-content and parallel imaging device comprises a sample table, a light source assembly, a primary imaging assembly, a secondary imaging assembly and a detector. First imaging is integrally completely carried out on cell island array regions of the biological cell chips in first imaging planes by the primary imaging assembly in optical axis sharing imaging modes, and first formed images on the first imaging planes comprise first hole effective regions which are separately arranged in array forms; second imaging is completely carried out on the various first hole effective regions on detection planes of the detector by the secondary imaging assembly in light path splitting imaging modes, second formed images on the detection planes of the detector comprise second hole effective regions which are separately arranged in array forms, and gaps between every two adjacent second hole effective regions are determined by secondary preset amplification factors. The high-throughput, high-content and parallel imaging device and the screening system have the advantages that gapless imaging can be carried out on the various hole effective regions of the biological cell chips, the utilization rate of camera pixels can be maximized, and accordingly high-throughput, high-content and parallel imaging and screening can be carried out.

The invention relates to an iron thermal analog test material quantity control method in the field of iron researching technology. It adopts tetrahedral prototype based on element, art, organization and capability and adopts modular structure idea to establish intelligent system which has the following modules: a front handling module, a phase-changing module, an organization capacity module and an applied nodule, wherein the front handling module reads the test parameter from database needed by thermal analog test course to provide an initial condition for the subsequent course; the phase-changing module and the organization capacity module is the dynamic analog of each physical metallurgy module of the thermal analog art; the applied module looks for the best value between the network connecting authority and the network structure by establishing the neurotransmission network module to forecast the organization and the capacity of the thermal analog test.

The invention relates to the technical field of fuel cells, in particular to a method for preparing a gas diffusion layer of a proton exchange membrane fuel cell. The method for preparing the gas diffusion layer of the proton exchange membrane fuel cell, which is provided by the invention, includes the following steps: dehydrating a log; performing first carbonization and second carbonization forthe dehydrated log; finishing the log carbonized by the second carbonization; soaking the carbonized by an anhydrous ethanol solution, and performing ultrasonic dispersion and drying; soaking the dried carbonized log by a water repellent emulsion; placing the processed carbonized log in a tube furnace, and sintering a water repellent in a nitrogen filled environment; adding conductive carbon powder and the water repellent emulsion to an alcohol solvent to form a uniform carbon power slurry; coating the carbon power slurry on the surface of the carbonized log having been subjected to hydrophobic treatment to form a substrate having a micro-porous layer, and sintering the substrate to obtain a gas diffusion layer. The preparation method provided by the invention solves technical problems ofhigh cost, low conductivity and limited application scope of the prior art.

The invention relates to a high-heat-resisting ethylene acrylate (AEM) rubber composition for a hose of a passenger car turbocharging system. The AEM rubber composition for the hose of the passenger car turbocharging system depends on the specification of the rubber and the cooperative use with reinforced carbon black N550, polyether/polyester mixed plasticizer TP-759 with low volatility and a vulcanizing agent DIAK1#, the carbon black N550 is quickly extruded, so that a reinforcement effect is realized while easiness in extrusion and convenience in production can be realized, the production process is well guaranteed through the plasticizer TP-759, the compression permanent deformation can be guaranteed within a given range through the vulcanizing agent DIAK1#, through the DOE (department of energy) formula design and by summarizing a great amount of test data, the heat resistance, oil resistance and compression permanent deformation of Ultra HT are far better than those of Vamac IP. The AEM rubber composition is excellent in engine oil resistance and thermal aging resistance and more suitable for the environment of the turbocharging system containing high-temperature engine oil vapor.

The invention discloses an electric power lexicon construction method oriented to multiple fields, which overcomes the defects in the prior art and comprises the following steps: step 1, collecting electric power related documents, extracting character information of the electric power related documents, enumerating all text segments in the character information, and enabling the length of each text segment to be smaller than a set threshold value; 2, the text fragments are filtered according to lexical related statistical indexes, the filtered text fragments are candidate new words, and all the candidate new words form a candidate word bank; 3, comparing the candidate new words in the candidate word bank with the common vocabularies, if the candidate new words are the common vocabularies, abandoning the candidate new words, If the candidate new words are not the common vocabularies, defining the candidate new words as formal new words; and 4, all the formal new words form a professional lexicon.

The invention discloses a bearing test result evaluation method, relates to aero-engine bearing test method research, and belongs to the field of bearing operation test. The invention aims to solve the problem that no special bearing test result evaluation method exists in China at present and the aviation bearing test assessment requirements cannot be met. The method specifically comprises the steps of carrying out test preparation; carrying out installing and debugging; monitoring bearing rotating speed, load, temperature, oil supply pressure, oil inlet and return temperature and testing machine main body vibration in the testing process; enbaling a tester to carry out inspection and recording according to regulations, carry out equipment inspection and maintenance, so as to ensure thatall system states of the equipment are intact; if abnormity is found in the test, carrying out shutdown inspection, reason finding or disassembly for bearing inspection, and evaluating the test bearing; carrying out spectral analysis on lubricating oil in the test process; after the test is completed, collecting, sorting, processing and analyzing test records and all original data, and judging whether the bearing passes the test assessment or not. The method is suitable for judging the bearing quality.

The invention discloses a modular hydrogen burning explosion experiment research system with a circulation loop and a method. The system comprises a cylindrical test body and a data measurement subsystem, wherein the test body comprises a plurality of modular pressure-bearing cylinders, and the modular pressure-bearing cylinders are sequentially connected in series and communicated; a plurality ofmeasuring points are arranged in each modular pressure-bearing cylinder, and each measuring point is electrically connected with the data measuring subsystem; an ignition device is arranged at one end in the test body; a plurality of annular pore plate turbulent flow arrays are arranged in each modular pressure-bearing cylinder; the device further comprises a gas injection subsystem, a vacuumizing subsystem and a gas circulation subsystem, the gas injection subsystem is communicated with one side of the test body, and the other side of the test body is communicated with the vacuumizing subsystem; and the gas circulation subsystem is communicated with the test body to form a gas closed circulation loop. The system has the characteristics of modular design characteristics, simple assembly and high flame combustion speed measurement precision.

The invention discloses a portable automatic testing device and method of an electric steering machine. The portable automatic testing device of the electric steering machine comprises a control computer and a kernel controller; the control computer is used to send configuration information to the kernel controller; the kernel controller is used to receive the configuration information sent by thecontrol computer, select a corresponding communication interface and send a corresponding control instruction to the electric steering machine to be tested; and meanwhile, the kernel controller is also used to collect the information of the electric steering machine to be tested and send it to the control computer. The invention is an automatic testing device and method for the electric steeringmachine, which is easy to maintain, has stable performance and high reliability, and has the functions of steering machine instruction sending, and real-time data acquisition, processing, storage anddisplay.

The invention discloses a matching design method for a control system and an imaging system. In the method, a target signal is equivalent to a sine input signal and is partitioned into a low-frequency target and a high-frequency target according to the period of an equivalent sine signal and the exposure time te of the imaging system; the influence factors (MTFv) of the lower-frequency target and low-frequency target on the dynamic space resolution of photoelectric tracing equipment have different functional forms MTF1v and MTFhv; the product of the MTFv and a modulation transfer function MTF0 of the imaging system under a static condition is a modulation transfer function MTF of the photoelectric tracing measuring equipment in a working state; and space resolution fs0 of the equipment in the working state can be obtained by using the MTF; and by adjusting the magnitudes of the MTFv and the MTF0, the balance between design difficulties of the control system and the imaging system is realized.

The invention provides a method and device for obtaining rigidity of an air spring. The method comprises the steps: obtaining a static hysteresis loop of the air spring through an experiment, and drawing a graph to determine the maximum friction force and maximum rigidity of a coulomb friction model; calculating compressed air rigidity and linear elastic rigidity; determining a displacement valuecorresponding to half of the maximum friction force; comparing the calculated static stiffness with the actually measured static stiffness and hysteresis loop and meeting the precision requirement; obtaining the dynamic stiffness of the air spring through an experiment, and subtracting the compressed air stiffness value and the coulomb friction model stiffness value from the dynamic stiffness experiment value to obtain a viscoelastic model stiffness value; subtracting the linear elastic stiffness value to obtain a stiffness contribution value of the fractional derivative model, and fitting bya least square method to obtain a fractional derivative parameter; and comparing the calculated dynamic stiffness value with the actually measured dynamic stiffness value and meeting the precision requirement. The method can effectively identify the parameters of the rubber air bag model, can establish a parameter database, can calculate the rigidity of the air spring and carry out accurate mechanical property matching, facilitates the design and optimization of an air bag process, and improves the research and development level of an enterprise.

The invention relates to the field of biotechnology and especially relates to a method for preparing R-o-chloromandelic acid by using nitrilase engineering bacteria. The method comprises carrying out centrifugation on a culture liquid obtained by fermental cultivation of engineering bacteria containing recombinant nitrilase genes, carrying out a conversion reaction process on o-chloromandelonitrile as a substrate and a buffer solution as a reaction medium in the presence of wet bacteria as catalysts, and after the reaction, carrying out separation purification on the reaction product mixed liquid to obtain R-o-chloromandelic acid, wherein the engineering bacteria containing recombinant nitrilase genes are constructed by nucleotide sequence coding genes shown in the formula SEQ ID NO. 2. The method has a fast reaction rate and a high reaction conversion rate.

The invention discloses a road surface unevenness detection method, device and system, a medium and equipment. The method comprises the following steps: firstly, acquiring road point cloud data acquired by a laser radar which is carried on a mobile platform and moves along with the mobile platform; then denoising, registering and segmenting the point cloud data to obtain the point cloud data of the road surface and the point cloud data of the road surface; extracting the road surface elevation information from the point cloud data of the road surface; and calculating the pavement power spectrum density through the pavement elevation information, and determining the pavement unevenness grade according to the pavement power spectrum density. The method is suitable for detecting unevenness of unstructured roads with poor road conditions, has the advantages of high detection efficiency and good stability, can solve the problem of detection vacancy of unstructured road unevenness of mountain fruit tea gardens and other unstructured roads, improves the design and research and development level of modern agricultural machinery, reduces the research and development period and research and development cost, so that the agricultural machinery power spectrum indoor simulation test accuracy is improved.

The invention belongs to the field of automobile driving training teaching simulation equipment, and provides an advanced driving simulation system based on monocular vision and a method thereof, andthe system comprises a lane departure early warning module, a forward collision early warning module, a master control module, and a drive control module. The lane departure early warning module and the forward collision early warning module are connected with the master control module, and the master control module is connected with the drive control module. The lane departure early-warning module system and the forward collision early-warning module system are integrated with GPS positioning and other functions and applied to the driving simulation device, a driver is prompted to change a path in time according to own will in a voice broadcast and display screen path display mode, the driving safety performance is improved, the driving safety is improved, energy is saved, the environmentis protected, and the driving skills of people are improved.