27results about How to "Calculation method is simple" patented technology

The present application provides a kind of formation threshold WOB and threshold torque determination method and device, belong to drilling engineering technical field, the method includes: obtaining different preset top drive speed under, in the preset WOB interval, the mechanical drilling speed, torque value and drill bit vibration parameters corresponding to different WOB value;For each preset top drive speed: based on the WOB value of the preset top drive speed and the mechanical drilling speed corresponding to the WOB value, determine the initial threshold WOB of the preset top drive speed from the WOB value;Based on the initial threshold WOB of the preset top drive speed, the torque value corresponding to the preset top drive speed is determined as the initial threshold torque of the preset top drive speed;Based on the drill bit vibration parameters corresponding to initial threshold WOB, initial threshold WOB and initial threshold torque are corrected, and formation threshold WOB and formation threshold torque are obtained.The present application has the advantages of simple calculation method, more accurate result, can effectively guide the selection of drill bit and screw rod, improve the mechanical drilling speed, and improve the rock breaking efficiency.

This application belongs to the field of aero-engine technology, and specifically relates to a method and apparatus for simulating aircraft bleed air during sustained test of a turbofan engine, wherein the inlet temperature T1 and inlet pressure P1 of the engine are preset to a range; Step S2: Calculate the aircraft bleed air volume W fy The range, the total bleed air temperature T of the aircraft fy The range and total bleed air pressure P fy Range; Step S3: Calculate the cold diameter D of the bleed air nozzle. fy Range; Step S4: Select the cold-state diameter D of the bleed air nozzle fy An aircraft bleed air volume verification test was conducted to obtain the bleed air volume W for the test. fyr When the induced draft volume W in the experiment fyr The requirements are met, and the cold-state diameter D of the expiratory air nozzle is adopted. fy When the induced draft volume W in the experiment fyr If the requirements are not met, return to step S4; ensure that the calculation error of the aircraft bleed air volume is within the required range, and obtain the actual bleed air volume of the engine in various states to the maximum extent through test program design. This test method has the advantages of simple test method, low test cost and high replacement efficiency.

The invention discloses a coal rock density calculation method, device and equipment. The method comprises the following steps: firstly, acquiring total rock mineral X diffraction experiment data, X-ray element data of target position coal rock, coal rock average porosity and coal rock average water saturation; obtaining the ash content mineral type of the coal rock according to the total rock mineral X diffraction experiment data; calculating the type of the ash mineral and the mass fraction of the organic matter mineral by utilizing the mass fraction of the characteristic element in the ash mineral and the X-ray element data; calculating the skeleton density of the coal rock by using the mineral density of the coal rock, the ash content mineral type and the mass fraction of the organic matter mineral; and calculating the density data of the coal rock at the target position by using the average porosity of the coal rock, the average water saturation of the coal rock and the skeleton density of the coal rock. In the process, after X-ray element data is obtained on a drilling site, a series of element calculation is carried out, the density data of the coal rock at the target position can be obtained, the calculation method is simple, and the requirement for timeliness while drilling is met.

This invention discloses a SKU shelving method and storage medium for a mobile robot warehousing system. The method includes: acquiring data information from the mobile robot warehousing system; constructing an SKU shelving decision model based on the acquired data information; constructing a calculation method for an SKU shelving strategy based on the data information and the SKU shelving decision model; calculating the SKU shelving result of the mobile robot warehousing system according to the calculation method, and implementing the method. The SKU shelving method strategy for a mobile robot warehousing system provided by this invention proposes an SKU shelving method from a globally optimal perspective. Compared with existing technologies, it can more rationally allocate shelving locations for SKUs, reduce the number of shelves required to complete all orders, and improve picking efficiency. This invention has good practicality and operability, and the calculation method is simple, providing a new and efficient strategy for solving the SKU shelving problem in mobile robot warehousing systems.

The invention belongs to the technical field of ballastless track interface mechanics, and particularly discloses an assembly type test device and test method for measuring normal mechanical parameters of an interlayer interface of a ballastless track. The center of the measuring platform is provided with a left side fixing device and a right side fixing device which are used for fixing the pushing test piece, the pushing test piece comprises an upper concrete test piece and a lower concrete test piece, the lower concrete test piece is provided with a reserved fixing hole for fixing the pushing test piece, and the reserved fixing hole is rigidly matched with a positioning screw rod, so that the pushing test piece can be fixed. The self-alignment assembly is realized; a simple and reliable measurement and calculation method is developed in a matched mode and used for obtaining a normal force-displacement relation curve and key normal cohesion parameters of the ballastless track interlayer interface, and a theoretical basis and data support are provided for numerical simulation and damage analysis of ballastless track interlayer interface behaviors.

This invention belongs to the field of permanent magnet transmission technology and relates to a torque calculation method for a high transmission torque detection device for permanent magnet couplings. This torque calculation method is based on the magnetic energy method in the equivalent magnetic charge method. It equates the fan-ring type permanent magnet to a cuboid permanent magnet compatible with the magnetic energy method. Using the chain derivative method, the relative torque between a single pair of cuboid permanent magnets is calculated from the magnetic energy. Then, the relative torque between each pair of permanent magnets is traversed and linearly superimposed to obtain the relative torque between a pair of permanent magnet rings. Finally, a comprehensive correction coefficient is introduced to calculate the actual torque corresponding to different rotation angles of the inner and outer rotors of the permanent magnet coupling. The calculation method is simple and has high torque prediction accuracy, providing theoretical guidance for the iterative research on the performance of permanent magnet couplings.

This invention discloses a method for calculating crack stress intensity factor based on a three-dimensional weighted function method, belonging to the field of reliability technology. Based on the Taylor series expansion method of complex functions, a complex variable finite element program is run to obtain the weighting function for a given crack geometry. Then, the stress intensity factor of the crack is obtained by integrating the stress on the crack surface with the weighting function. Specifically, a finite element model containing the crack is established and meshed; the nodes of the crack tip are perturbed on the imaginary axis; the imaginary part of the crack opening direction at the nodes on the crack surface is obtained by running the complex variable finite element program, thus obtaining the weighting function on the crack surface; the stress intensity factor at the nozzle corner is solved by integrating the weighting function and the stress on the crack surface. Compared to two-dimensional weighting functions, this method extends to three-dimensional elliptical cracks, broadening its application range; the method provides accurate calculation results for the stress intensity factor at the nozzle corner under complex loads, and is simple and effective to use.

This invention relates to the field of mining methods, specifically to a bottomless, segmented parallel ore-draining method. The method comprises the following steps: S1. After the collapse of the access road of a first drilling roadway, the width of the collapsed section along the strike of the ore body is determined as L2. Multiple second drilling roadways are designed along the direction perpendicular to the strike of the ore body. The access distance M between adjacent second drilling roadways is determined based on the access distance m between adjacent first drilling roadways; S2. The number n of second drilling roadways is calculated based on the ore body access length L between the vein roadway and the cutting roadway, the width L1 of the collapsed section, the width L2 of the collapsed section, and the access distance M between adjacent second drilling roadways; S3. Based on the number n of second drilling roadways and the access distance M between adjacent second drilling roadways, second drilling roadways are deployed between the vein roadway and the cutting roadway for ore body recovery. This ore-draining method is applied to ore recovery after the collapse of a drilling roadway access roadway, significantly improving ore recovery efficiency and reducing dilution rate.

The present application provides a kind of rock drillability grading method, comprising the following steps: step S1, carries out cutter penetration test, calculates rock drillability index;Step S2, establish the single factor calculation model of rock drillability index and each influencing factor of rock drillability;Step S3, the correlation analysis of each influencing factor of rock drillability is carried out two by two, and determines key influencing factor;Step S4, based on key influencing factor, establish the prediction model of rock drillability index;Step S5, establish the calculation model of rock drillability index and underground engineering rock mass quality index;Step S6, establish the rock drillability classification standard of Cretaceous and Jurassic strata.The method is based on the penetration load-penetration curve obtained from cutter penetration test, determines rock drillability index, provides evaluation index for rock drillability research, the evaluation index is clear in meaning, and the calculation method is simple, realizes the rock drillability of Cretaceous and Jurassic strata is predicted.

The application discloses a wind power bearing capacity analysis method and system based on anti-peaking characteristics, and the method comprises the following steps: performing cluster analysis on the normalized daily wind power output characteristic data set to obtain a clustering result; based on the clustering result, calculating a wind power clustering weighted anti-peaking coefficient and a wind power clustering typical characteristic anti-peaking coefficient; according to the information of the installed capacity of each type in the to-be-tested region, calculating the total amount of peak regulation supply in the to-be-tested region; taking the total amount of peak regulation supply greater than or equal to the total demand for peak regulation as a constraint, and based on the wind power clustering weighted anti-peaking coefficient and the wind power clustering typical characteristic anti-peaking coefficient, respectively calculating a wind power clustering weighted bearing capacity and a wind power clustering typical characteristic bearing capacity; and based on the wind power clustering weighted bearing capacity and the wind power clustering typical characteristic bearing capacity, obtaining the wind power bearing capacity interval of the to-be-tested region. The application can accurately solve the range interval of the wind power bearing capacity of the region on the basis of calculating the peak regulation supply capacity of each type of power supply in the region.

This invention discloses an uncertainty analysis method for a spacecraft thermoacoustic-vibration coupling system, relating to the field of aerospace computing. The method includes: discretizing the geometric model of the spacecraft's structure and internal sound field to obtain a thermoacoustic-vibration coupling finite element model; selecting sample points in the uncertainty parameter space to establish a data-driven multidimensional parallelepiped model; selecting observation points in the spacecraft's structure and internal sound field; selecting experimental points in the uncertainty parameter space and inputting them into the finite element model to perform thermoacoustic-vibration coupling finite element analysis, obtaining the corresponding structural velocity response and sound pressure level response values ​​at the observation points; establishing a radial basis function neural network model based on the experimental points and their corresponding response values; and calculating the response intervals of the structural velocity response and sound pressure level response of the multidimensional parallelepiped model based on the radial basis function neural network model. This invention improves the accuracy of uncertainty calculation for spacecraft thermoacoustic-vibration coupling systems while maintaining computational efficiency.

This invention discloses a method for predicting the peak flow of a breach in an earth-rock dam, comprising the following steps: Step 1: Collect basic data; Step 2: Determine the initial breach parameters and calculation time step; Step 3: Calculate the breach flow at the dam crest; Step 4: Calculate the normal water depth at the breach; Step 5: Calculate the water depth in the velocity-increased zone at the breach; Step 6: Calculate the average flow velocity at the breach; Step 7: Calculate the average shear force of the flow at the bottom and sides of the breach; Step 8: Calculate the erosion velocity at the bottom and sides of the breach; Step 9: Calculate the average shear force of the flow at the downstream toe of the dam; Step 10: Calculate the erosion velocity at the downstream toe of the dam; Step 11: Calculate the dam stability coefficient within the breach area; Step 12: Adjust the terrain and perform corresponding calculations; Step 13: Output the peak flow of the breach. This invention overcomes the shortcomings of previous methods, as the calculation results are not sensitive to the initial breach size, thus improving the accuracy of the calculation results.

The application relates to a coating equipment and a linear gradient filter film thickness uniformity correction method, and solves the problem that the film thickness uniformity of a linear gradient filter prepared by using an existing deposition method of electron beam evaporation cannot be corrected. A revolution correction plate is arranged below a workpiece disc, the revolution correction plate rotates with the workpiece disc around the center of a rotating disc, the workpiece disc has self-rotation motion, the film thickness distribution of Ta2O5 and SiO2 is corrected to the middle linearity by the revolution correction plate, at this time, the film thickness distribution of Ta2O5 and SiO2 after being corrected by the revolution correction plate has not reached the final target, and the difference from the final target is respectively corrected for the second time by a first fixed correction plate and a second fixed correction plate, so that the film thickness distribution of Ta2O5 and SiO2 finally reaches the final target, and the film thickness distribution of Ta2O5 and SiO2 is corrected to the film thickness distribution state required by the linear gradient filter by the combination of the revolution correction plate and the fixed correction plate.

The application is based on a dual-flow gate violence detection method and system of an expanded 3D convolutional network and a Transformer, and realizes classification through the following steps; S1: obtaining a video stream, segmenting the video stream into frames, and calculating the dense optical flow between the continuous frames of the video stream; S2: segmenting the video stream segment through a sliding window, and suppressing non-motion elements in the RGB mode by using the optical flow mode; S3: performing spatiotemporal modeling on the dense optical flow and the SRGB mode by using a 3D convolutional neural network, and performing feature fusion to create a feature map; S4: performing time modeling on the spatiotemporal feature sequence of the video stream segment by using a Transformer encoder, and generating a time feature map; S5: performing average pooling by using a 1D convolutional neural network, and performing classification by using a multilayer perceptron, and classifying the video as violence or non-violence. The application solves the deficiency of the violence detection model in processing spatiotemporal features, improves the accuracy and efficiency of violence detection, and especially has an application effect in a dynamic video monitoring scene.

This invention relates to the field of automotive control methods, specifically to a method for estimating the driving range of a pure electric vehicle. The method comprises the following steps: S1, obtaining the real-time power consumption and remaining battery power of the vehicle's auxiliary components; S2, dividing the vehicle's historical mileage into short and long mileage segments according to a set distance, and calculating the average motor power consumption for the short and long mileage segments respectively; S3, calculating the current average motor power consumption based on the average motor power consumption for the short and long mileage segments and their respective weighting coefficients; S4, calculating the remaining driving range of the electric vehicle based on the current average motor power consumption, remaining battery power, and real-time power consumption of the auxiliary components. The method for estimating the driving range of a pure electric vehicle in this application is simple. By distinguishing between short and long mileage segments and calculating the average motor power consumption for each segment, the final driving range is calculated. This method considers the power consumption characteristics of the motor under different mileage segments, resulting in a more accurate calculation.

This invention discloses a method for calculating the safe temperature drop of a satellite fairing, including: S1 calculating the area and volume of the satellite fairing; S2 calculating the heat transfer coefficient of the satellite fairing; S3 calculating the heat dissipation of each structural parameter of the fairing assembly; S4 calculating the heat loss of the fairing assembly during transportation; S5 calculating the heat capacity of the fairing assembly; S6 calculating the temperature drop of the fairing assembly based on the principle of heat conservation between the heat lost and the heat reduced by the fairing assembly; and S7 plotting the temperature drop curve over time. This invention can accurately calculate the temperature drop inside the fairing assembly during relocation and tower opening, providing a precise and quantitative basis for air conditioning temperature and humidity control. Furthermore, by introducing parameters of temperature drop, time, and ambient temperature, a functional relationship is established, providing a reasonable and feasible technical approach for calculating the fairing temperature drop, meeting usage requirements, and establishing a temperature drop table curve calculation method for easy engineering application.

The invention discloses a coal rock ash content calculation method and device, equipment and a medium. The method comprises the following steps: firstly, acquiring X-ray diffraction experiment data of total rock minerals and X-ray element data of coal rock at a target position; obtaining the ash content mineral type of the coal rock according to the total rock mineral X diffraction experiment data; calculating the mass fraction of the ash content mineral type by using the mass fraction of the characteristic element in the ash content mineral and the X-ray element data; and finally, calculating the ash content data of the coal rock at the target position by using the mass fraction of the ash content mineral type and the ash content mineral composition. In the process, the X-ray element data of the coal rock at the target position can be obtained through an element logging instrument on a drilling site, then a series of element calculation is carried out according to the previously obtained X-ray diffraction experiment data of the whole rock mineral, and the ash content data of the coal rock at the target position can be obtained, so that the calculation method is simple, and the calculation efficiency is high. And the requirement on timeliness while drilling can be met.

This invention provides a liquid level telemetry draft detection device, method, and ship. By analyzing the relationship between the installation location of the draft sensor and the actual draft measurement of the ship when the installation location is not on the hull plating, a liquid level telemetry draft detection method is proposed, which makes the measured values ​​of the liquid level telemetry system more accurate.

This application relates to the field of autonomous driving technology, and particularly to a method, apparatus, vehicle, and storage medium for generating laser point clouds. The method includes the following steps: acquiring the horizontal position information, longitudinal position information, size information, and heading angle information of each detected target within the detection area of ​​a lidar; calculating the two-dimensional point cloud coordinates of each corner point of the detected target based on the horizontal position information, size information, and heading angle information, and calculating the angle between the lidar and the upper and lower edges of the detected target based on the longitudinal position information and size information; calculating the actual height of each corner point based on the angle, and generating the laser point cloud coordinates of the detected target based on the two-dimensional point cloud coordinates of each corner point and the actual height. This solves the problems of high complexity, high resource consumption, and difficulty in applying to implementation testing and large-scale scenario testing in current point cloud generation methods.

This invention discloses a method for calculating the residual thickness of carbon bricks in a blast furnace hearth. Based on the erosion characteristics of carbon bricks, the carbon bricks are divided into an intact layer, an embrittled layer, and a ferroplated layer along the radial direction of the hearth. The residual thickness of the carbon bricks is calculated using the thermal conductivity of each layer. First, based on the principle that the radial heat flux of the hearth sidewall is equal, the boundary line between the intact layer and the embrittled layer is calculated to obtain the length of the intact layer. Then, based on the temperature boundary line between the embrittled layer and the ferroplated layer, the lengths of the embrittled layer and the ferroplated layer are calculated to obtain a more accurate residual thickness of the carbon bricks. The calculation method of this invention is simple, the data is easy to obtain, and it is highly operable. By using the corresponding thermal conductivity to calculate the residual carbon bricks in different regions, it more realistically and accurately reflects the degree of erosion of the carbon bricks. This allows blast furnace operators to obtain the internal working status of the hearth in a timely and accurate manner, effectively avoiding production accidents and showing broad application prospects.

The application provides a noise prediction method and device for an air conditioner outdoor unit, an air conditioner and a storage medium. The prediction method comprises the following steps: obtaining target information of a first detection position and a second detection position of the air conditioner, wherein the target information comprises a noise value and displacement information; calculating a noise correlation coefficient of the first detection position and the second detection position according to the target information; obtaining a fitting coefficient according to the noise correlation coefficient; and calculating a noise prediction value according to the fitting coefficient and the displacement information; wherein the first detection position is the position of a compressor, and the second detection position is different from the first detection position; the displacement information of the first detection position is the rotating speed of the compressor; the displacement information of the second detection position is the vibration acceleration of the second detection position; the noise value comprises a first frequency band noise value and a second frequency band noise value; and the first frequency band noise value is greater than the second frequency band noise value. The prediction method has low requirements on the prediction environment, high accuracy, and can quickly and accurately obtain the noise prediction value.

This invention relates to the field of slope stability analysis, and particularly to a method for calculating the slope safety factor based on stochastic search theory. This method searches for a polygonal slip surface based on the stochastic theory of distribution functions and calculates the safety factor. The method mainly includes: structural plane distribution function, crack initiation range division, random number and random variable calculation, structural plane propagation calculation, failure conditions, shearing criterion, and safety factor calculation. This invention fully considers the randomness of structural plane distribution in complex fractured rock masses, utilizes a sufficient number of random variables to realize crack propagation and the generation of polygonal slip surfaces, and closely approximates the application of practical slope engineering.

An early fault diagnosis method for cross-stage multi-condition based on permutation spectrum difference measurement, including: collecting vibration signals of mechanical equipment under different states in the manufacturing test stage and the actual use stage, dividing the vibration signals into multiple subsequences through a combination of characteristic parameters, and reconstructing the subsequences into the original phase space; obtaining all possible permutation patterns according to the embedding dimension of the vibration signals, and converting the original phase space into a symbolic phase space; counting the number of occurrences of various permutation patterns in the symbolic phase space to obtain permutation spectrum characteristics; obtaining the difference degree between the vibration signals collected under different states; establishing a parameter selection model to select the best parameter combination; calculating the permutation spectrum characteristics of each time series using the best parameter combination, inputting the permutation spectrum characteristics of the data in the manufacturing test stage into a multi-class SVM classifier to obtain a training model, and inputting the permutation spectrum of the data in the actual use stage into the training model to identify the fault type and operating condition corresponding to the time series.

The invention discloses a DEM-based determination method for design flood calculation parameters of a Huai Shanghai method, and the method comprises the steps: obtaining a target drainage basin and peripheral DEM data, calculating the water flow direction of each grid through a D8 algorithm, and generating a flow direction grid; determining a main stream position according to the flow direction grid; matching a net rain time period according to the drainage basin area A, and calculating net rain intensity i when net rain in the time period is 20mm; identifying the underlying surface type in combination with a satellite image, and matching the roughness values to form a roughness grid; estimating the flow velocity of each grid through a dynamic wave method; determining an isochrone; constructing an L-B curve and a tau-B curve; and determining core parameters of the Huai Shangshi method. The method has the advantages that the isochrone is determined based on the DEM, the isochrone calculation method is improved, the isochrone determination precision is improved, the L-B curve is reasonably determined, then standard, automatic and high-precision acquisition of seven core parameters of the Huai Shangzhou method is achieved, and the parameter determination efficiency and quality are improved.

This invention proposes a three-phase parameter detection circuit and method for power systems with a power frequency transformer connected, relating to the field of three-phase parameter detection in power electronics. With a power frequency transformer connected at the input, this solution, through a first and second power system three-phase parameter detection circuit, can detect phase loss in the S-phase, R-phase, and T-phase, and also performs phase sequence detection. Compared to traditional circuits, this solution has advantages such as low interference from external components, low cost, and wide application range. It can accurately determine the input phase loss of each phase and achieve phase sequence detection.

A method and apparatus for detecting the working parameters of a forklift includes: 1) obtaining a top-view image of the current forklift; 2) calculating the current pixel distance A1 of a first set of labels and comparing it with the initial pixel distance A0 to determine whether a change has occurred; if so, calculating the distance H1 between the current image acquisition module and the forks according to a first proportional relationship, and proceeding to step 3); if not, calculating the final height H of the current forks as H = H0; 3) determining whether a second set of labels appears in the top-view image; if so, calculating the current pixel distance B1 of the second set of labels in the top-view image and calculating the current height change value H2 of the inner mast according to a second proportional relationship, and proceeding to step 4); if not, calculating the final height H of the current forks as H = X - H1; 4) calculating the final height H of the current forks as H = (X - H1) + H2. This invention only requires the acquired image to calculate the working parameters of the forklift, eliminating the need for sensors and reducing costs.

A wafer correction device and a wafer correction method are provided. The wafer correction device comprises a rotating table, a lower chuck, an XY-axis moving platform, a measuring sensor, a Z-axis lifting mechanism, an upper chuck and a PLC system. The lower chuck is used to adsorb the wafer, the rotating table is used to drive the lower chuck to rotate, and the XY-axis moving platform is used to drive the rotating table to translate. The measuring sensor is located on the X-axis and is used to measure the distance of the point of the outer peripheral contour of the wafer when rotating into the sensing area of the measuring sensor. The wafer correction method comprises: rotating a first circle to determine and correct the X-axis direction offset distance ΔX between the first rotation center of the rotating table and the center of the wafer, rotating a second circle to determine and correct the Y-axis direction offset distance ΔY between the second rotation center of the rotating table and the center of the wafer, rotating a third circle to verify whether ΔX and ΔY are within the allowable error range, and determining the orientation of the V-shaped notch or straight edge based on the corrected center of the wafer.