128 results about "Angular error" patented technology

The invention belongs to the technical field of mechanical arm control, relates to a bionic mechanical arm elbow joint adjusting angular velocity control method, and solves the problem that an existing method is difficult to meet the collaborative requirements of smooth starting, smooth transition and quick response in bionic actions. Acquiring starting and target positions to generate a motion trail; deducing an expected angle sequence based on forward and reverse kinematics, calculating a target angular velocity, and collecting current angle and angular velocity information in real time; an angle error signal is constructed, an angular velocity control instruction is generated by using a position type PID controller, and PID parameters are dynamically set through an improved algorithm based on state optimization; and a control instruction is input into the elbow joint driving unit, and dynamic adjustment and closed-loop control of the angular speed are achieved. The effect of the method is verified through experiments, and the experiments prove that the precision, robustness and dynamic response capability of angular velocity control of the bionic mechanical arm can be remarkably improved through the method.

The invention relates to a method and equipment for detecting deflection of a galvanometer motor in a medical galvanometer scanning system. The method mainly comprises the steps that a dynamic threshold value library is established, a dynamic threshold value set matched with a current scene is called, and the dynamic threshold value set comprises an angle error threshold value, a vibration threshold value and a driver temperature threshold value; acquiring inner ring control signals in real time, wherein the inner ring control signals at least comprise a motor angle error signal, a vibration signal and a driver temperature signal; carrying out quantitative fusion on the collected signals through a multi-signal weight fusion algorithm and carrying out preliminary judgment; and comparing the preliminarily judged signals with a dynamic threshold group, judging whether each signal meets a corresponding threshold condition or not, and if all the signals meet the corresponding threshold condition, judging that the galvanometer motor deflects in place. Compared with the prior art, the precision is remarkably improved, the normal skin burn risk caused by position deviation is avoided, and the high-precision safety requirement of a medical scene is met.

The invention belongs to the field of aircraft digital assembly automatic drilling and riveting, and particularly discloses an automatic drilling and riveting machine actuator normal alignment method and system.The method comprises the steps that firstly, the original distance from the end face of a presser foot to the plane around a to-be-machined hole is collected through a sensor; then, a KF-MAF algorithm combining Kalman filtering and moving average filtering is adopted to suppress dynamic noise, and accurate distance information is obtained; then, the deviation between the feeding direction of an actuator and the normal direction of the surface of the hole to be machined is calculated, and the angle error amount of a target hole site is obtained through a bilinear interpolation method; and finally, an actuator is controlled to rotate to compensate errors, the position of the center point of the tool is kept unchanged, the axis of the drill bit coincides with the local surface of the workpiece in the normal direction, and normal alignment is achieved. According to the method, the needed original information is less and easy to obtain, alignment can be accurately and rapidly completed, and the drilling precision is guaranteed.

The invention discloses a sound wave detection method and system for an underground pipeline, and the method comprises the following steps: 1, dynamically adjusting the detection height in the radial direction of a pipeline through a lifting adjustment device of a first sound wave detection mechanism, and enabling a sound wave transmitting end to adapt to the inner walls of pipelines with different pipe diameters; 2, a rotation driving device of a second sound wave detection mechanism controls a sound wave transmitting end to conduct multi-angle rotation scanning around the axis of the pipeline, and the circumferential area of the cross section of the pipeline is covered; 3, based on the pipeline inner diameter D, the material acoustic characteristics and the preset coverage rate eta, motion parameters are generated through a dynamic optimization algorithm; 4, collecting a reflected sound wave signal and carrying out multi-stage processing; through the implementation of the method, a dynamic optimization algorithm of full-dimensional scanning coverage enables the screw pitch error of a spiral track to be small, 100% non-blind area coverage of the cross section of the pipeline is achieved, the self-adaptive focusing lens controls the sound beam focusing angle error to be within + / -2 degrees, and the detection sensitivity of the thin-walled pipe is improved.

This invention relates to the field of flying shear equipment, specifically a manufacturing method for a double-edged rotary drum cutter shaft. The method includes: optimizing the heat treatment allowance diagram of the cutter shaft; rough grooving the shear blade mounting surface, without opening the two ends of the groove; heat treating the workpiece shaft according to the optimized heat treatment allowance diagram to ensure the allowance meets the set requirements; configuring a counterweight: machining a counterweight according to the outer dimensions of the groove on the shear blade mounting surface, and placing the counterweight in the rotating body to restore the outer contour and center of gravity of the rotating body; and using an angle plate for auxiliary positioning: setting an angle plate on the transmission side, and using a dial indicator to calibrate the auxiliary reference hole axis of the angle plate to be parallel to the machine tool shaft. This invention solves the technical problems of the surface hardness of the double-edged rotary drum cutter shaft after machining not meeting design requirements, the impact of unbalanced inertial forces on machining accuracy during turning, and the difficulty in controlling the parallelism and compound angle errors of the shear blade mounting surface and locking cylinder.

The present invention discloses a method, system, and medium for detecting the spatial posture error of a moving component. The method comprises the following steps: obtaining posture information of a machine tool moving component based on an IMU module and an electronic level: accelerometer signals and angular velocity signals obtained by the IMU module, and angular error signals obtained by the electronic level; fusing the posture information to obtain linear error and angular error; establishing an error prediction model using a BP neural network based on the linear error, angular error, and the motion speed of the machine tool linear axis; obtaining the optimal initial weights and thresholds of the BP neural network using a longhorn beetle whisker search algorithm, substituting these values ​​into the error prediction model for model training to obtain a trained error prediction model; and performing spatial posture error detection on the moving component based on the trained error prediction model to obtain posture error detection results. The present invention can measure the spatial posture error of equipment motion and improve measurement precision while ensuring accuracy.

The invention discloses a five-axis numerical control machine tool rotating shaft reference point position error correction method and system. The method comprises the steps that a special tool and a measuring probe are installed on a machine tool workbench; the straight shank inspection rod is installed on a machine tool spindle, and the length parameter of the straight shank inspection rod is input into a numerical control system; controlling each axis of the machine tool to move, enabling the measuring probe to respectively touch the near end and the far end of the straight shank inspection rod, and recording coordinate values in a preset direction during two times of touch; according to the coordinate value in the preset direction during touch and the distance between the near end and the far end in the direction perpendicular to the preset direction, the angle error of the rotating shaft is calculated; reading the reference point compensation value of the current rotating shaft in the numerical control system, and correcting the reference point position of the current rotating shaft according to the reference point compensation value and the angle error. The special tool is arranged on the machine tool, and the measuring probe is combined with the machine tool spindle to realize automatic measurement and compensation of the spindle reference point error, so that the detection and compensation are short in time and high in efficiency.

This invention discloses a multi-station tooling, belonging to the field of machining tooling and fixture technology. The tooling includes a base, a single cylinder, a movable arm, multiple clamping modules, spherical washers, and limiting components. The single cylinder drives the movable arm to perform overall linear translation. The movable arm has multiple spherical grooves, and each pull core forms a spherical adaptive fit pair with the spherical grooves through the spherical washers. The clamping modules are configured as interchangeable inner support modules or outer clamping modules, allowing switching of working modes on the same base by changing the pull cores and elastic chucks. The spherical adaptive fit pair between the spherical washers and spherical grooves automatically compensates for axial eccentricity and angular errors caused by the interchangeability of the inner support modules and outer clamping modules and assembly deviations. This invention achieves unified high-precision synchronous clamping at multiple stations with a single cylinder and rapid switching between inner support / outer clamping, significantly improving clamping force consistency, machining yield, and changeover efficiency.

The application discloses a kind of anti-UAV array direction finding calibration method and device, it is related to anti-UAV technical field, realize multi-dimensional error correction, realize the accurate calibration of all error sources, all directions.The first time that array element position error is included in anti-UAV array direction finding calibration system, through GPS / inertial navigation module real-time acquisition array element position, calculate the influence coefficient of position deviation to direction finding, and into calibration formula, solve the direction finding error problem caused by outdoor array element installation deviation;Meanwhile, discard single 0 degree auxiliary signal source, add 30°, 60°, 90° and so on 7 direction multi-angle calibration signal source, establish the angle-error mapping table of all directions, realize the accurate calibration of different angle incident UAV signal, eliminate direction dependent error, cover the full direction incident demand of UAV signal in anti-UAV scene.

Disclosed is a simulator and simulation method with increased precision, in particular a weapon system simulator, and weapon system provided with such a simulator. —The simulator (1) comprises a unit for generating a virtual image (I1) which is defined according to an orientation reference and a sighting reference, a unit for generating a so-called captured image from angle-error and telemetry measurements relating to one or more real actors (R1 to R4) each of which is equipped with a retroreflector (10), the angle-error and telemetry measurements being performed using a rangefinder, a comparison unit for comparing the current virtual image (I1) and the captured image so as to determine an error value representative of an orientation and / or sighting error, and a resetting unit for resetting the orientation reference and / or the sighting reference in order to correct said error value so as to create an optimised virtual image which is displayed on the vision element (2) in place of the current virtual image.

A calibration method for LiDAR channel angular error is applied to a calibration device with a controller and a moving component. The LiDAR optical engine on the moving component is controlled by the controller to deflect. The method includes: aligning the LiDAR's detection center with the calibration-target center; selecting channels to be calibrated; controlling the selected channels to project onto the target based on their positional relationship; acquiring an image of the target to get real and reference spots; determining vertical and horizontal offset angles according to the spot positions; and calibrating the channels using these offset angles.

The application provides a satellite splicing imaging posture maneuver angle error correction method and related device, and relates to the technical field of satellites. A plurality of ground imaging points are acquired, and then actual posture angles of the satellite pointing to each ground imaging point are obtained respectively; and simulation posture angles of the satellite pointing to each ground imaging point obtained by using a satellite simulation tool are obtained respectively. Finally, based on the actual posture angles and the simulation posture angles of each ground imaging point, a posture angle deviation mean value is obtained. In this way, the posture angle error of the collected remote sensing image can be corrected based on the real-time flight state of the satellite using the posture angle deviation mean value, so that deviation of the collected remote sensing image is avoided.

The invention discloses a mechanical arm control method and system for high-precision machining, and relates to the technical field of machining control. According to the method, an operation data set is constructed, a lead screw displacement error Wx (t) is calculated, and a mapping relation between time and an angle is established through a lead screw transmission ratio to obtain an angle error vector epsilon (phi); superposing and averaging the angle error vector by adopting a periodic signal superposition technology to obtain a lead screw angle error amount Es (phi); solving a fitting parameter group through a least square fitting algorithm, constructing a screw pitch error index Wwc (phi), performing dynamic error compensation on a screw rotation angle variable phi, and generating a corrected path track Xc; and calculating a periodic residual error ratio Rre of an error before and after correction by extracting actual displacement and theoretical displacement data, and evaluating a compensation state. According to the method, through time and angle domain collaborative modeling and periodic residual error closed-loop evaluation, dynamic correction and precise control over the motion error of the mechanical arm lead screw are achieved.

The invention relates to an assembly error elimination method for a liquid crystal polarization state controller, which comprises the following steps of: constructing an assembly error model by adopting a Mueller matrix, and simulating and analyzing an influence rule of an angle error of a polaroid and an LCVR2 (Liquid Crystal Voltage Receptor 2) on a polarization state; based on an influence rule of assembly errors, a two-step correction strategy based on computer-aided assembly and adjustment is provided. The two-step correction strategy comprises the following steps: firstly, carrying out angle correction on a polaroid by taking ellipsometric skewness of circularly polarized light as a criterion; then, angle correction of the LCVR2 is carried out on the basis of the included angles among the three pieces of linearly polarized light; an experiment light path is built for experiment verification, and meanwhile, the installed and adjusted liquid crystal polarization state controller is used for generating elliptically polarized light to verify the effectiveness of installation and adjustment. The method can effectively eliminate the assembly error, and achieves the high-precision output of the polarization state.

The invention discloses an angle-adjustable frequency stabilization device for a laser gyroscope, and belongs to the field of laser gyroscopes. The device comprises a frequency stabilization spherical mirror and an annular thin rib structure formed by processing a glass material, coaxial columnar protrusions are arranged at the two ends of the center of the frequency stabilization spherical mirror, the end of the columnar protrusion at one end is a concave spherical surface, and the columnar protrusion at the other end is a jackscrew contact surface; the clamping mechanism is used for installing the frequency stabilization spherical mirror; the 3-4 jackscrews are connected with the grabbing and clamping mechanism through threads, and the end surfaces of the jackscrews are in tight contact with the jackscrew contact surfaces on the columnar bulges of the frequency stabilization spherical mirror; the two piezoelectric ceramic pieces are arranged on the upper surface and the lower surface of the card grabbing mechanism respectively and used for achieving frequency stabilization through voltage control. According to the invention, through different screw-in amounts of 3-4 jackscrews, the reflection angle of the frequency stabilization spherical mirror can be accurately adjusted, the angle processing error of a laser gyroscope cavity is made up, and the problem that a new angle error may be introduced due to the fact that the angle of an existing clamping type frequency stabilization control mirror cannot be adjusted is solved.

The invention provides a pointing error correction method and device of a beam waveguide system, equipment and a storage medium, which can be applied to the technical field of antennas. The method comprises the following steps: acquiring laser incident to a beam waveguide system along a current beam transmission direction every time an antenna rotates to an angle; laser is reflected to the target through first to Sth plane mirrors in the beam waveguide system, a first laser point is obtained, and the first to Sth plane mirrors are plane mirrors which are closer to the target in sequence; determining an angle error according to the first laser point, the second laser point incident to the Sth plane mirror and the target point; rotating angles of waveguide reflectors are adjusted, angle errors are corrected, the waveguide reflectors are used for reflecting a current wave beam, and a plane mirror is placed in the center of each waveguide reflector; re-acquiring the first laser point, and determining a displacement error according to the re-acquired first laser point and the target point; and adjusting the displacement of the waveguide reflector, and correcting the displacement error.

The application belongs to the field of grating measurement, and provides an error compensation method for grating interferometer measurement, which comprises the following steps: constructing an angle error function based on the angle error of grating interferometer measurement; constructing a relative displacement error function based on the relative displacement error of grating interferometer measurement; constructing an explicit compensation model based on the angle error function and the relative displacement error function; constructing an implicit compensation model based on the data set formed by the angle error and the relative displacement error; obtaining an explicit accuracy mean value based on the explicit compensation model, and obtaining an implicit accuracy mean value based on the implicit compensation model; when the implicit accuracy mean value is not less than the explicit accuracy mean value, the explicit compensation model is used to compensate the error of the grating interferometer measurement value. The method guarantees the reliability of the selected model by analyzing the consistency of the internal mapping of the model and the physical law, so as to realize high-precision, high-robustness and strong-explainability displacement measurement compensation.

The invention discloses an angle error detection method and system for a photoelectric encoder, and relates to the technical field of encoder error detection, and the method comprises the following steps: obtaining an original angle signal, a standard angle signal and a vibration signal of the photoelectric encoder, which are synchronously collected in a vibration state; determining an instantaneous angle error according to the standard angle signal and the original angle signal; based on the vibration signal and the instantaneous angle error, establishing an error model for describing a mapping relation from vibration to angle error; acquiring a current angle signal and a current vibration signal of the photoelectric encoder in real time; determining a real-time angle error compensation value according to the current vibration signal and the error model; and compensating the current angle signal by using the real-time angle error compensation value, and outputting an accurate angle value. A dynamic error model is constructed by actively introducing controllable vibration and synchronously analyzing the controllable vibration, a real vibration working condition is simulated, and the repeatability and reliability of measurement are improved.

The invention discloses a heavy-load hydraulic mechanical arm integrated control method and system based on reinforcement learning, relates to the technical field of mechanical arms, and solves the problem that an operator determines an excavation position only by visual judgment or simple two-dimensional image analysis and is difficult to accurately recognize the optimal stress surface of a target body. The virtual model is continuously compared with actual mechanical arm parameters, an error signal is generated, strategy updating of the reinforcement learning model is triggered, self-adaptive control over the hydraulic mechanical arm is achieved through the closed-loop process of state input-action output-reward feedback, and the angle error is reduced to be within + / -0.5 degrees; and in combination with geometric feature analysis of the model body, the optimal working face is locked innovatively according to dual judgment standards of the mean value and 180-degree difference value of the regional included angle and the regional flatness, so that the problems of overlarge excavation resistance, aggravated mechanical loss and the like caused by improper selection of the working face are effectively avoided, and the shoveling stress of the excavator is more reasonable.

The invention discloses an instantaneous rotating speed real-time compensation method for a motor test board, which comprises the following steps of: firstly, carrying out self-inspection on equipment, then testing by using a qualified motor, judging the reasonability of an error, then carrying out measured value compensation on a component, continuously carrying out rotating speed test on the compensated test board, and carrying out real-time compensation on the instantaneous rotating speed on the basis of a secondary test result. The angle error represented by the number of teeth of the fluted disc is reasonably compensated, real equipment to be tested is tested, and whether the equipment to be tested is qualified or not is judged. According to the invention, through the core idea of variable control, a qualified motor is taken as a test object, numerical compensation is carried out on components of a test bench, the main compensation is the influence brought by the instrument reaction time difference, and then the compensation amount of the fluted disc angle is derived according to the compensated numerical value. The influence on errors caused by oscillation and distortion generated in the processes of a fluted disc structure on a motor shaft, installation conditions and rotation is eliminated, the finally measured instantaneous rotating speed of the motor is compared with a product standard requirement to judge whether the instantaneous rotating speed is qualified or not, and the result is more scientific and accurate.

The application discloses a two-dimensional white light microscopic splicing interferometer measuring device and method, and belongs to the technical field of precise optical detection. The device comprises a base platform, vertical motion tables arranged on both sides of the base platform, a non-Schlieren interferometer and a white light profiler respectively carried by the vertical motion tables, an X-direction linear guide rail, and a large-scale rotary table assembly and a small-scale rotary table assembly arranged on the X-direction linear guide rail. The method uses the white light profiler and the non-Schlieren interferometer in cooperation, acquires the relative angle difference between sub-apertures in real time, adopts a dynamic angle compensation mechanism, and combines a specific splicing algorithm to realize high-precision fusion of surface shape data. The application effectively solves the angle error accumulation problem in sub-aperture splicing measurement of a small curvature radius curved mirror, realizes sub-nanometer level surface shape measurement precision, and is particularly suitable for high-precision detection of an X-ray curved mirror.

The utility model relates to the technical field of reinforcing steel bar machining, in particular to a reinforcing steel bar bending mechanism which comprises a fixing base and an adjusting assembly arranged above the fixing base, the adjusting assembly comprises a second square pipe fixedly installed on the upper surface of the fixing base, and a first square pipe is movably arranged on one side of the second square pipe. A first square pipe is movably arranged on one side of the first square pipe, a third square pipe is movably arranged on the other side of the second square pipe, the two bending assemblies are arranged at the upper ends of the first square pipe and the third square pipe, the positioning assembly is arranged at the upper end of the second square pipe and comprises a second vertical rod, a stud is fixedly installed at the upper end of the second vertical rod, and a plurality of angle positioning plates are movably arranged on the outer side of the stud in a sleeving mode. According to the steel bar bending mechanism, the multiple angle positioning plates are arranged at the upper end of the second vertical rod, the orientation of the angle positioning plates is adjusted, and the bending angle of a steel bar is observed according to the orientation of the angle positioning plates, so that the angle of the steel bar can be visually judged by operators conveniently, the bending angle error is reduced, and the bending mechanism is convenient to control.

The present invention executes: first angular error estimation processing (S40) for determining an estimated first angular error value obtained by estimating an angular error in a radar device using azimuthal dependence of relative velocity with respect to a stationary object; second angular error estimation processing (S50) for calculating a stationary object movement direction in which the stationary object moves when viewed from a moving body if the moving body is assumed to be travelling straight, calculating the next distance to the stationary object at the next azimuth on the basis of the movement direction average value and the distance to the stationary object, calculating a true estimated angle value on the basis of the next distance and a reference movement direction in which the stationary object moves when there is no angular error, and determining an estimated second angular error value on the basis of the difference between the true estimated angle value and the next azimuth; and angular error integration processing (S60) for using the estimated first angular error value and / or the estimated second angular error value to estimate an angular error in an object detected by the radar device.

The invention provides a following control method and device of mobile equipment, electronic equipment and a storage medium, target stability is maintained by performing consistency judgment on candidate targets in sensing data, and target confirmation and locking are realized when an interaction trigger instruction corresponding to the candidate targets is detected; in a locking state, target area information is continuously output, depth / distance information is fused to calculate a relative pose, then the relative pose is converted into a distance error and an angle error to generate a chassis control instruction, and closed-loop adjustment of the following process is achieved. Therefore, the false following probability in a multi-person scene can be reduced, the stability and controllability of target locking and following are improved, and a smoother and more accurate following effect is kept when the target moves and the environment changes.

The invention provides a pan-tilt camera nonlinear positioning error correction method and device, and the method comprises the steps: controlling a pan-tilt camera to collect image data according to different deflection angles, carrying out the marking of the image data, and obtaining the marking information, which comprises the pixel coordinates, geographic coordinates, description information and confidence of a target ground object; calculating a pixel error corresponding to the target ground object according to the labeling information and a camera calibration result corresponding to the target ground object, and calculating angle errors of the pan-tilt camera at different deflection angles according to the pixel error to obtain a course angle error, a roll angle error and a pitch angle error; and correcting the attitude of the pan-tilt camera according to the course angle error, the roll angle error and the pitch angle error to obtain a correction result. According to the method and the device, different nonlinear error characteristics of the holder in the attitude can be corrected, the accuracy of position correction of the holder camera is improved, and the positioning precision of the iron tower camera is further improved.

This application discloses a method, apparatus, device, and storage medium for simulating radar main lobe feeding, relating to the field of radar simulation technology and applied to radar simulation systems. The radar simulation system includes a radar antenna, a simulation device antenna, and a simulation device. The method includes: acquiring the main lobe parameters of the radar antenna and the coverage angle parameters of the simulation device antenna; if the main lobe parameters match the coverage angle parameters, determining the angle error value; based on the angle error value, determining the main lobe beam parameters corresponding to the main lobe beam, wherein the main lobe beam parameters include main lobe gain, S-curve amplitude, and angle range; based on the main lobe beam parameters, determining the effective sidelobe set emitted by the radar antenna; based on the effective sidelobe set, determining the target triplet mapped by the main lobe beam onto the simulation device antenna; and based on the target triplet, generating the target echo fed back from the simulation device antenna to the radar antenna. This application can improve the accuracy and reliability of radar main lobe simulation.

The invention relates to a method for determining a rotation angle output signal of an orientation sensor. In this case, a rotational angle pose over time is measured (S100) as a measured angle signal (), and the measured angle signal () is corrected (S110) with a correction angle signal () in order to obtain a filter input angle signal (). And outputting (S140) the corrected input angle signal () as a rotation angle output signal. Furthermore, the filter input angle signal () is filtered (S120) in order to obtain a corrected input angle signal (), and the corrected angle signal () is determined (S130) as a function of the corrected input angle signal (), the frequency () of the filter input angle signal () and the angle error signal (), the frequency () of the filter input angle signal () being determined by determining the difference between the filter input angle signal () and the corrected input angle signal (). And determining an angle error signal (). Here, determining (S130) the corrected angle signal () comprises: determining (S131) a first coefficient and a second coefficient of a first and a second component of at least one harmonic of the angle error signal (); and determining (S132) a corrected angle signal () as a function of the determined first and second coefficients and a first trigonometric function of the first component and a second trigonometric function of the second component of the at least one harmonic, using a filter input frequency () of the angle signal ().

The invention relates to a method for regulating and / or controlling an electric machine by extended synchronous modulation based on space vector modulation, wherein the following input variables are used: - a set (Σ) of switching durations (Σ1, ..., Σx) that appear within a subsequent sampling interval, - a current angular error (ΣError,Now) and a subsequent angular error (ΣError,Next), - a minimum switching angle (Σmin), wherein an online calculation of switching angles (Σ1) and a flow trajectory (Σab) is performed, wherein pulse patterns (suvw(Σel)) are calculated online as a function of a modulation level (m).

A method for correcting an angular error in sensorless detection of a rotation angle of a rotor of an electric machine using an injection method is disclosed, comprising: processing a current Q-current I q by means of a first filter element and a current D-stream I d by means of a second filter element; determining an amount of the processed D-stream I d_hp and determining a moving average of the magnitude; determining a squaring of the moving average; calculating a product of the processed Q-stream I q_hp and the processed D-current I d_hpand determining a moving average of the product; and calculating a quotient of the squaring and the moving average of the product, and providing the quotient as angular error data. Also disclosed is a computing unit for executing the procedure and a vehicle with an electric machine and the computing unit.

The invention relates to the technical field of modeling, and particularly provides an Abbe error modeling method and system for a multi-axis machine tool, a terminal and a storage medium, and the method comprises the steps: constructing a reference coordinate system; analyzing kinematic chain data of the machine tool; analyzing an error coupling relationship between the linear axis and the rotating axis; and constructing an Abbe error model in the reference coordinate system based on the kinematic chain data and the error coupling relationship, wherein the Abbe error model is used for decoupling the Abbe error from the measured geometric error of the motion axis. According to the method, the error coupling relation between the linear shaft and the rotating shaft is analyzed, the Abbe error generated by deviation coupling between the deflection error of the rotating shaft and the linear shaft is considered, the influence effects of the geometric error and the Abbe error on the tool function point are separated, and therefore the overall machining precision of the machine tool is improved.