491 results about "Horizontal axis" patented technology

The invention discloses a current transformer distortion current reconstruction method based on a U-I trajectory curve, and the method comprises the following steps: carrying out the synchronous sampling of a voltage value and a current value at a measurement point, and carrying out the per-unit processing; constructing a coordinate system taking the current value after per unit processing as a horizontal axis and the voltage value as a longitudinal axis in the two-dimensional coordinate, and drawing a U-I track curve; analyzing U-I track curve characteristics of the current transformer in a normal operation state, a transient state and a steady state; linear transmission sections of transient saturation and steady saturation are identified; and taking sampling points in the linear transmission section as input values, restoring a U-I trajectory curve by using an ellipse fitting algorithm, extracting current values corresponding to abscissas on the restored U-I trajectory curve, and arranging the current values according to a time sequence to realize current reconstruction. According to the method, the reconstruction of the CT secondary distortion current is realized through a least square ellipse fitting method by utilizing the similarity between a U-I trajectory curve and an elliptic curve during normal linear transmission. The problem that the differential protection adaptability is reduced or even fails due to distortion current is effectively prevented, and the protection stability is effectively improved.

The invention relates to the technical field of vehicle body posture leveling control, and provides a vehicle body posture leveling control method and system for an electric mountain transport vehicle, and the method comprises the steps: obtaining ground contact state data and a transverse shaft rotation angle in real time, and carrying out the contact terrain analysis according to the ground contact state data to obtain terrain parameter information; carrying out vehicle load distribution analysis according to the ground contact state data and the terrain inclination parameters to obtain pressure gravity center shift data; adjusting the horizontal axis rotation angle according to the pressure center-of-gravity shift data to obtain a target horizontal axis rotation angle; according to the target horizontal axis rotation angle and the terrain pressure distribution data, carrying out wheel bearing demand analysis to obtain a wheel pressure adjustment strategy; and driving the suspension system to level the posture of the vehicle body according to the wheel pressure adjusting strategy. The terrain environment change can be sensed in real time based on the wheel ground contact state change and the vehicle gravity center shift monitoring mechanism, the rotation angle of the transverse shaft and the wheel ground contact pressure are accurately adjusted, and self-adaptive leveling of the vehicle body posture is achieved.

This method is applicable to the technical field of bridge construction and provides a method for real-time monitoring and evaluation of the force-bearing state during the casting process of a steel-pipe concrete arch bridge. The solution involves identifying environmental background points in the RGB three-dimensional matrix for the entire bridge within the range between the maximum and minimum RGB values ​​in the local RGB three-dimensional matrix for the steel pipe, representing environmental background temperature points in the temperature information matrix, and identifying concrete pouring points based on whether the unit matrix condition for the temperature of the steel dome pipe is met. The system also obtains the horizontal axis of the pixel at the center of the poured liquid surface in the left and right half arches in a Cartesian coordinate system, divides the entire arch rib to be poured into 2n equal parts, and calculates the cross-sectional displacement response of each structure based on the cross-sectional displacement caused by the load action of each segment. This allows for real-time, efficient, and accurate observation of the difference in concrete liquid surface level on both sides, allowing for the structural response during pouring to be determined and reducing the construction risk of arch bridges.

The invention provides a coal cutter sliding shoe bionic wear-resistant structure design method, and relates to the technical field of structural design, the method comprises the following steps: collecting and analyzing observation data of a biological scale structure, extracting key characteristic value factors of horizontal axis length, longitudinal axis length, vertex angle and height, and carrying out parameter combination design based on the key characteristic value factors; secondly, through an orthogonal test and variance analysis, determining the influence degree and the optimal combination of each characteristic value factor on the wear resistance; meanwhile, thermodynamic parameters in the abrasive wear test process are monitored in real time, a thermodynamic data set is generated, a wear loss data set is combined, range analysis and variance analysis are carried out, and significance of all factors is verified; and finally, synthesizing the thermodynamic influence index and the variance analysis coefficient to construct a comprehensive fine-tuning model, and providing a scientific fine-tuning strategy for optimization of characteristic values.

The invention provides a scheduled task visualization method and device based on a time series, and relates to the field of visualization, the method comprises the following steps: obtaining scheduled task data, the scheduled task data being used for representing task information executed within a preset time; determining coordinate axis information according to the planned task data and the node cache data cached in advance; wherein the node cache data comprises a horizontal axis positioning sorting key and a vertical axis grouping basis, and the horizontal axis positioning sorting key is used for representing the position and sequence of the data on a horizontal axis; drawing a coordinate axis according to the coordinate axis information, and rendering a corresponding plan task node in the coordinate axis to obtain an initial display result; and according to the relationship among the scheduled tasks in the scheduled task data, rendering connecting lines among the scheduled task nodes in the initial display result to obtain a visual display result. According to the method, association and dependence between tasks can be clearly displayed, so that a visualization result is more accurate and reliable.

The invention relates to the technical field of aero-engine quality inspection, and discloses an aero-engine part machining quality detection method based on data management. The method comprises the following steps: collecting multi-source machining data of a part, wherein the multi-source machining data comprises dimensional tolerance, surface roughness and material hardness data; key quality features are extracted according to a design drawing, and the key quality features and the multi-source processing data are subjected to time sequence alignment according to process stages; a three-dimensional mass space model with the process stage as the horizontal axis, the key quality features as the longitudinal axis and the multi-source machining data as the depth axis is constructed, and a mass distribution thermodynamic diagram is generated; identifying an abnormal process region based on the thermodynamic diagram, extracting a corresponding data subset, inputting the data subset into the dynamic convolution kernel quality analysis network, and outputting a process abnormal probability value; when the probability value exceeds a threshold value, triggering cross-process correlation analysis, and fusing upstream and downstream process data to generate a composite quality feature vector; and an abnormal type is judged through a cascade classifier, and a compensation strategy library is called to generate a machining parameter adjustment instruction set.

A fixing tool is used for fixing a drainage tank, and the horizontal axis coordinate of the drainage tank is adjusted by transversely moving a first fixing piece. The vertical axis coordinate of the drainage groove is adjusted by vertically moving the second fixing piece; the third fixing piece stretches out and draws back in the longitudinal direction to adjust the longitudinal axis coordinates of the drainage groove, the fixing tool can accurately adjust the coordinates of the drainage groove, it is ensured that the drainage groove is kept in the vertical state, and the measuring precision is improved. And meanwhile, compared with a manual fixing mode, a tool fixing mode is adopted, so that the position of the flexible shaft in the track of the drainage channel is relatively fixed, and the friction force measurement precision can be further improved.

The invention relates to the technical field of refrigeration equipment state monitoring and data analysis, and discloses a freezer remote monitoring and fault prediction system, which comprises the steps of intercepting operation data of a freezer in a door closing silence period, calculating an environment dew point temperature sequence and extracting a unit temperature difference load fluctuation ratio sequence of a refrigeration system; based on the time change rate of the environment dew point temperature sequence and the unit temperature difference load fluctuation ratio sequence, an instantaneous cross bispectrum coupling potential energy sequence representing the nonlinear modulation relation of the time change rate and the unit temperature difference load fluctuation ratio sequence is constructed; then, a two-dimensional phase space hysteresis track is constructed with the environment dew point temperature sequence as the horizontal axis and the instantaneous cross bispectrum coupling potential energy sequence as the longitudinal axis, and the cross bispectrum hysteresis entropy of the dew point driving type load volatility is calculated based on the probability density distribution of the track and the directed circulation area; and finally, judging an operation state and outputting a fault prediction result by verifying whether the entropy value is within a historical reference interval.

The invention discloses a hard disk testing method and device, electronic equipment and a storage medium. The method comprises the steps of obtaining a standard performance value of a hard disk; performing a read-write test on the hard disk to obtain a test performance value of the hard disk; drawing the test performance value in a coordinate system; wherein the horizontal axis of the coordinate system corresponds to the time, and the longitudinal axis corresponds to the test performance value; fitting the test performance values in the coordinate system by adopting a least square fitting mode to obtain a fitting curve; and comparing the standard performance value with the fitting curve to obtain a consistency test result of the hard disk. According to the invention, the accuracy of hard disk consistency testing is improved.

The invention provides a seismic activity analysis method and system based on Matlab software. The method comprises the following steps: arranging a broadband sonic sensor array to collect original data of the depth of a seismic source; the data is divided into equidistant grids based on Matlab, a depth and frequency histogram is constructed, the horizontal axis is an equidistant depth grid, the longitudinal axis records the original frequency of the seismic event in each grid, and nonlinear features are reserved; calculating the sound wave propagation time difference of the same seismic event, and if the time difference inversion depth is within a preset tolerance range, marking the data as valid data; performing unsupervised classification processing on the effective data and the original frequency of the histogram based on Matlab, iteratively dividing a space seismic cluster, and generating a classification boundary; and combining the classification boundaries with the geographic coordinates to output a classification boundary map, and distinguishing shallow source and deep source earthquake dominant regions by color blocks. According to the method, the accuracy of automatic division of the shallow earth crust seismic source depth distribution mode and the geographical visualization expression efficiency are improved.

The invention provides a method for constructing a physical field of a horizontal axis water turbine blade of an agent model, and relates to the technical field of digital twinning. According to the method, rotating speed data of a water turbine under different flow velocity conditions are determined, and rotating speed values corresponding to all flow velocities are obtained; then, fluid-solid coupling simulation is carried out in combination with experimental data, and stress and deformation data of the water turbine blade under the actual operation working condition are further obtained; according to the method, the KNN algorithm is utilized to carry out order reduction processing on the obtained blade structure data, a plurality of grid points are combined into representative points, the calculation complexity is low, the processing requirement of graph rendering software on the data size in the real-time rendering process is met, a combined Kriging method is adopted to carry out digital twinning agent model training on the data after order reduction, and the real-time rendering efficiency is improved. The reconstruction of a real-time physical field of the blade is realized; iteratively optimizing the digital twin physical field proxy model according to a genetic algorithm, and solving the problem of deviation between the proxy physical field model and a real physical model; and finally, deploying the digital twin physical field agent model into a digital twin system and solving physical field distribution in real time.

The intelligent flexible clamping system for creep age forming of the large thin-walled workpiece comprises a base, a base table is arranged at the upper end of the base, and extending holes are distributed in the base table in a matrix mode; the lifting driving mechanism is mounted on the base, and the upper end is provided with a lifting movable end aligned with the extending hole; the flexible clamping assembly comprises a base frame, a rotating table, a first rotating driving mechanism, a pitching table, a second rotating driving mechanism and a supporting module. The rotating table is rotatably and movably installed on the base frame along the vertical axis, the first rotating driving mechanism is installed on the base frame and connected with the rotating table so as to drive the rotating table to rotate and move along the vertical axis relative to the base frame, the pitching table is rotatably and movably installed on the rotating table along the horizontal axis, and the second rotating driving mechanism is installed on the rotating table and connected with the pitching table; the supporting module is detachably installed at the upper end of the pitching table. According to the method, the flexibility, the accuracy and the efficiency of creep age forming of the large thin-wall part are remarkably improved. And the requirements of multiple varieties, small batch and customization can be met.

The invention relates to the technical field of operation and maintenance management, and discloses a historical building operation and maintenance management method and system based on digital twinning, and the method comprises the steps: building a digital substrate based on historical data and point cloud, dividing a monitoring region according to a bearing structure, value elements and a function space, and associating an identifier. And mapping the operation data to a corresponding component storage space according to the area to which the operation data belongs, and forming a dynamic operation and maintenance file and a monitoring data stream. And performing visual coding on the data stream by taking the acquisition time as a horizontal axis and the spatial topology as a longitudinal axis to generate a spatial-temporal distribution map. And determining an abnormal area according to fluctuation form difference and trend deviation degree of real-time and historical data in the map, and binding identifiers and time periods to generate an abnormal list. Updating the file by taking the list as an index, and matching the disease record with a historical maintenance record to generate an operation and maintenance management scheme; the efficiency of historical building operation and maintenance management based on digital twinning can be improved.

The invention relates to the technical field of mine roadway supporting, in particular to an adjustable subway construction tunnel supporting device which comprises a steel rope, two steel arches and two bases. The two bases are sequentially distributed in the horizontal direction perpendicular to the axial direction of the tunnel. The two steel arches are sequentially distributed in the axial direction of the tunnel and each composed of a plurality of arc-shaped steel sections. In the initial state, the two steel arches abut against the ground, and the tops of the arc-shaped structures of the two steel arches are located on the two sides of the connecting line of the two bases correspondingly. During use, the two ends of each steel arch are rotationally installed on the two bases around the horizontal axis perpendicular to the axial direction of the tunnel, and the steel arches can move in the axial direction of the tunnel relative to the bases. The steel rope alternately penetrates through the two steel arches, the two steel arches can be driven to stand up to support the tunnel by stretching the two ends of the steel rope, operation is easy, the steel arches cannot be further excessively inclined after standing up due to too large tension, and safety is high.

A fully automatic leveling system for a deck theodolite comprises: a leveling device, on which a deck theodolite is arranged and which is configured to adjust a horizontal axis system of the deck theodolite on the basis of a control instruction from a leveling controller; a first gradienter, which is arranged on the deck theodolite and configured to read and provide to the leveling controller the levelness of the deck theodolite in a certain direction; a reference plane extension device, which is arranged on a ship datum plane and configured to acquire values of levelness deviation between the reference plane extension device and the ship reference plane in different directions and provide the values of levelness deviation to the leveling controller; a second gradienter, which is arranged on the datum plane extension device and configured to read and provide to the leveling controller the levelness of the ship datum plane in a certain direction; and the leveling controller, which is configured to automatically rotate and adjust the deck theodolite on the basis of the read values of levelness deviation between the horizontal axis system of the deck theodolite and the ship reference plane, thus achieving automatic leveling of the deck theodolite by means of repeat iterations.

The invention discloses an intelligent fault prediction method and system for a rotary cutter based on multi-sensor analysis, and relates to the technical field of fault prediction. Comprising the steps that in a working period of the rotary cutter, audio data of the position of a rotary cutter are collected, the audio data cover audio signals generated in the wood rotary cutting process of the rotary cutter, and the working period is defined as the time needed by a clamping shaft to rotate by a circle; the audio data is mapped into an oscillogram and a waveform curve is formed, the horizontal axis of the oscillogram representing time. According to the method, the abnormal vibration mode is recognized by analyzing the feature points in the audio waveform curve, and the operation state of the rotary cutter is comprehensively monitored on the basis of the temperature change captured by the thermal imaging technology and the operation state of the rotary cutter captured by the visual image technology; potential faults of the rotary cutter of the rotary cutter in the operation process are predicted, and the service life of the rotary cutter is prolonged to a certain extent.

To provide a metal plate that can improve the positional accuracy of through-holes when a metal mask is installed on a frame, a method for manufacturing the metal plate, as well as the metal mask and a method for manufacturing the metal mask through use of the metal plate.SOLUTION: Provided is a metal plate to be used for manufacturing a metal mask. In a graph in which an arbitrary position n in a width direction of the metal plate is plotted on a horizontal axis and in which a differential expansion rate En in a unit length L0 in a longitudinal direction is plotted on a vertical axis, a maximum inclination of the differential expansion rate E in a central portion in the width direction is 1.8×10 -3 / m or less, and the central portion is a portion that occupies 80% in the width direction excluding both side portions that each occupy 10% in the width direction.SELECTED DRAWING: Figure 1A

The invention provides a differentiated service classification and multi-path traffic scheduling method and system, and belongs to the technical field of network communication, the quintuple, packet size and timestamp characteristics of each data packet are captured in real time, a timestamp is mapped to an image horizontal axis, the packet size is mapped to a longitudinal axis after standardization, and discrete data is converted into a continuous visual mode; classifying the traffic in the network by using a pre-trained classification model, and distributing corresponding service requirements and priorities for each traffic type; distributing an INT data packet for each path, and detecting and monitoring the time delay, throughput and packet loss rate of the path in real time; and selecting an optimal path by adopting a CMAB algorithm in combination with the priority of the flow, the service demand, the real-time performance of the path and historical scheduling feedback. According to the invention, comprehensive path quality evaluation is realized; the high-priority service is ensured to obtain stable and high-quality transmission quality; and the accuracy and robustness of path selection are improved.

In a first aspect of the present invention there is provided a method of repowering a horizontal-axis wind turbine comprising a tower, a nacelle located rotatably at the apex of the tower, and a rotor having a hub and at least three used blades mounted pitchably to the hub and extending radially therefrom, the method comprising the steps of uninstall the at least three used blades from the hub, install at least three repower blades to the hub, each repower blade extending between a root and a tip, and each repower blade further comprising a connection point located between the root and the tip, install a plurality of blade connecting members, each blade connecting member being connected between corresponding connection points of a pair of repower blades; and install a tensioning system with the hub, the tensioning system being configured to adjust a tension in each blade connecting member.

The invention discloses a buried pipeline base reaction force calculation model and a structural calculation method thereof, and relates to the technical field of trench-buried structure base reaction force calculation, the reaction force calculation model is a trapezoidal model, and the trapezoidal model is constructed by the following steps: establishing an x-q'coordinate system, taking a coordinate origin o as a pipeline vertex position in the x-q 'coordinate system, and calculating the pipeline base reaction force in the x-q' coordinate system; and constructing a trapezoidal model by taking the horizontal rightward direction of the pipeline as the positive direction of an abscissa axis x and the vertical downward direction of the pipeline as the positive direction of a ordinate axis q '. According to the buried pipeline base reaction force calculation model and the structural calculation method thereof, the base reaction force calculation model is provided, a pipeline deformation and stress calculation formula under the model is obtained, base reaction force distribution is in a trapezoidal distribution form, and compared with a traditional method, the structural calculation method has the advantages that the structure is simple, and the calculation efficiency is high. The coincidence degree of a substrate reaction calculation model, a finite element and a test result is better, and errors are reduced.

We provide an information processing system that can analyze the results of risk investigations. [Solution] According to one aspect of the present invention, there is provided an information processing system comprising at least one processor, the processor being configured to execute each of the following steps by reading a program, wherein in an investigation result acquisition step, results of multiple risk investigations on the person being evaluated are acquired, in an item reception step, input of a first item and a second item for analyzing and displaying the multiple results is received from the evaluation user, and in an analysis information display control step, analysis information is displayed for each of multiple display areas of a coordinate system having the first item as the horizontal axis and the second item as the vertical axis, showing the number of results including the content of the first item and the content of the second item corresponding to the coordinates of the display area, and the display areas are areas obtained by dividing the planar area of ​​the coordinate system along at least one of the horizontal axis and the vertical axis.

The invention relates to the technical field of data reasoning, and discloses a mining equipment intelligent manufacturing production scheduling optimization system and method.The system comprises a topological graph generation module, an initial scheduling Gantt chart generation module, a demand strength coefficient acquisition module, a flexible scheduling Gantt chart acquisition module and a final scheduling instruction set generation module; constructing a topological graph based on the process relation of the mining equipment; generating an initial scheduling Gantt chart by taking the part task set as a longitudinal axis and the corresponding general assembly line task sequence as a transverse axis; when a disturbance event occurs, an affected process dependence tree is extracted, task delay cost is evaluated, and a requirement strength coefficient for rescheduling in the manufacturing process is output; generating a flexible scheduling Gantt chart based on the process beat deviation and the equipment utilization rate in the synchronous adjustment manufacturing process; determining a final scheduling instruction set through process path dynamic correction and process optimization results; the efficiency of the mining equipment manufacturing and production process scheduling scheme can be improved.

To provide a filter capable of reducing pressure loss at time of air passing.SOLUTION: A filter in which a metal-organic framework is supported on a substrate, wherein the filter that has undergone a specific pretreatment (a) and a water adsorption treatment (b) satisfies the following requirements (R1) and (R2) when air at high temperature and low humidity is passed through it at a predetermined airflow rate. Requirement (R1): Obtain graph P, where the horizontal axis represents time (seconds) and the vertical axis represents the cumulative amount of water desorbed per gram of filter (g), and graph Q, where the horizontal axis represents time (seconds) and the vertical axis represents the temperature (°C) of the air downstream of the filter, grasp the time t (seconds) at which the air temperature downstream of the filter reaches its lowest point T on graph Q, and the absolute value of the slope of the straight line connecting the point (t, P(t)) on graph P at time t and the origin is 9×10-4 or greater. Requirement (R2): The cumulative amount of water desorbed after 600 seconds is 0.133 g or more per gram of filter.SELECTED DRAWING: None

The utility model discloses a vertical five-axis clamping manipulator for a junction box. Comprising a base, a first driving piece fixed to the base, a driven rotary disc driven by the first driving piece to rotate around a vertical shaft, a stand column fixed to the driven rotary disc, a second driving piece fixed to the stand column, a first supporting arm driven by the second driving piece to move downwards, and a third driving piece fixed to the first supporting arm. The second supporting arm is driven by the third driving part to horizontally rotate around a vertical shaft, the fourth driving part is fixed to the second supporting arm, the L-shaped supporting plate is driven by the fourth driving part to horizontally rotate around the vertical shaft, the fifth driving part is fixed to the L-shaped supporting plate, and the tail end executing part is driven by the fifth driving part to rotate around a horizontal shaft. According to the utility model, the carrying operation from the interior of the junction box material box to the junction box conveying lines can be realized by fully utilizing the height space, the occupied space is reduced, the feeding of the two junction box conveying lines can be realized by only one manipulator, and the equipment cost is reduced.

The invention relates to the field of printed matter detection, and discloses a printed matter-based double-sided detection device, which comprises a mounting bracket, a mounting ring with a horizontal axis is arranged on the mounting bracket, a conveying assembly is arranged in the mounting ring through a connecting assembly, and a driving assembly is arranged on the mounting bracket. The driving assembly is used for driving the conveying assembly to rotate around the axis of the mounting ring, the conveying assembly comprises two conveying units with the conveying direction parallel to the axis direction of the mounting ring, the two conveying units are arranged in the vertical direction, and the distance between the two conveying units is smaller than the thickness of a to-be-detected printed object; each conveying unit is divided into an overlapping section and an open section in the conveying direction, the overlapping section of the upper conveying unit is located over the overlapping section of the lower conveying unit, the open sections of the two conveying units are oppositely arranged, and the upper portions of the open sections of the two conveying units are each provided with an optical detection unit.

The invention discloses an aircraft surface waviness measurement and analysis method and system, and the method comprises the steps: scanning the surface of an aircraft according to a planned path through employing a three-coordinate measuring machine and a scanning probe, obtaining scanning data, and obtaining the scanning data for evaluation through employing a segmented scanning and segment-to-segment direct splicing mode for a hole, a pin and other structural parts; fitting based on scanning data to obtain a point deviation data set, calculating corresponding point arc length data based on the point deviation data and the point coordinate data on this basis, and drawing a graph by taking a horizontal axis as the point arc length data and a longitudinal axis as the point deviation data; and determining the surface waviness of the airplane by combining the derivative at the intersection point of the point deviation data curve and the transverse axis and the distance between the wave crest and the wave trough, thereby realizing the efficient and accurate measurement of cavities, welding seams and other obstacle structures on the outer surface of a large-scale airplane part or the whole machine and the accurate calculation of the waviness.

The invention relates to the technical field of tunneling equipment, in particular to transverse shaft type tunneling equipment and a spraying flow distribution mechanism thereof. The spraying flow distribution mechanism of the transverse shaft type tunneling equipment comprises a fixing assembly and a rotating assembly, the rotating assembly comprises a fixing base and an end cover which define a water pressure cavity, and the fixing assembly comprises a connecting shaft extending into the water pressure cavity through the fixing base and a flow distribution disc installed on the connecting shaft and located in the water pressure cavity. A matching face used for being attached to the valve plate is arranged on the fixing base, a water channel is arranged in the connecting shaft, the water outlet end of the connecting shaft is located on the side, facing the end cover, of the valve plate, the end cover is provided with a rotating installation hole and an end cover water channel, and the water outlet end of the connecting shaft is rotatably installed in the rotating installation hole. The end cover water channel communicates with a water outlet of the water outlet end of the connecting shaft and the water pressure cavity. The axis position of the connecting shaft is guaranteed, the coaxiality of the rotating assembly and the fixing assembly is guaranteed, and eccentric wear between the matching faces of the valve plate and the fixing base due to installation deviation is not prone to occurring.

The invention provides a training data validity evaluation method, system and device, and the method comprises the steps: obtaining a training set which is obtained through uniform downsampling from to-be-evaluated data; obtaining a test set, wherein the test set comprises at least one benchmark test set and at least one associated test set; training a probe model by using the training set; testing the probe model by using the test set, and recording test indexes; making an observation diagram according to the test indexes, wherein the step of making the observation diagram comprises: establishing a rectangular coordinate system by taking the test index of the benchmark test set as a horizontal axis and the test index of the associated test set as a longitudinal axis; drawing key points in the rectangular coordinate system according to the test indexes; and performing validity evaluation on the to-be-evaluated data according to the observation map. The method has the advantages that the data validity evaluation can be quickly given with very low computing power, the model research and development iteration efficiency can be improved, and the gain is more obvious especially for a leading-edge complex model.

The invention discloses a servo manipulator holder attitude adaptive control method, and belongs to the field of holder attitude control, and the method comprises the steps: S1, inputting a three-dimensional coordinate point (x1, y1, z1) of a target position of a servo manipulator, and enabling a coordinate point x1 of a horizontal axis and a coordinate point y1 of a longitudinal axis of the three-dimensional coordinate point to form a two-dimensional coordinate point of the target position; s2, according to the two-dimensional coordinate point and a two-dimensional coordinate point (x2, y2) of the current position of the servo manipulator, an xy plane attitude deflection angle of the target position and the current position of the servo manipulator is calculated; s3, inputting the xy plane attitude deflection angle into the pan-tilt attitude conversion mathematical model, and outputting a pan-tilt rotation angle error value; s4, inputting the rotation angle error value of the holder into an improved PID (Proportion Integration Differentiation) algorithm; and S5, applying the improved PID algorithm to a pan-tilt attitude control system, and outputting a pan-tilt driving value to adjust the pan-tilt rotation angle according to the real-time pan-tilt rotation angle error value so as to realize adaptive accurate and stable control of the pan-tilt attitude.

The invention provides a coordinate conversion method for a plurality of crystal grains on a wafer, which comprises the following steps: firstly, mechanical absolute coordinates of the crystal grains on the wafer are provided, the mechanical absolute coordinates comprise horizontal axis coordinates and vertical axis coordinates, and one of the horizontal axis coordinates and the vertical axis coordinates is a non-integer; secondly, the amplification factor is calculated, the amplification factor is the ratio of the minimum longitudinal distance to the minimum transverse distance between two adjacent crystal grains, and the ratio is larger than 1; and finally, relative coordinates are calculated, and the relative coordinates are obtained by multiplying non-integer coordinates in the horizontal axis coordinates and the longitudinal axis coordinates in the mechanical absolute coordinates by the amplification factor and then replacing the non-integer coordinates with the non-integer coordinates.