75 results about "Angular error" patented technology

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 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.

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 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 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 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.

Method for regulating and / or controlling an electrical machine by extended synchronous modulation based on space vector modulation, using the following input variables: - a set (α) of switching times (α1, ..., α x ), which appear within a subsequent sampling interval, - a current angular error (α Error,Now ) and a subsequent angular error ( α Error,Next ), - a minimum switching angle (α min ), where an online calculation of switching angles (τ1) and a flow trajectory (ψ) ab ) is done, and where pulse pattern (s uvw (γ el )) depending on a modulation level (m) can be calculated online, characterized by the fact that with different signs of the angular error (α) Error,Now , α Error,Next ) α the smaller angular error in absolute value (α Error,Now , α Error,Next) determines the maximum switching time (Δα) Error,max ) can potentially be redistributed, where by summing all around the minimum switching angle (α min ) reduced switching times from the set (α) that corresponds to a current or subsequent space vector ( u → Now , u → N ext ) are associated with the switching time (Δα) Now,max , Δα Next,max ) is determined to predict the occurrence of the space vector ( u → Now , u → N ext ) can be reduced to a maximum within the sampling interval, - where in the case of a negative current angular error (α) Error,Now ) to shorten the current space vector ( u → Now ) the actual switching time to be redistributed (Δα) from the minimum of the maximum switching time (Δα) Error,max ) and α of the switching time (Δα Now,max) is determined, whereby the switching duration to be redistributed (Δα) is chronologically distributed to the corresponding switching durations (α) Now,i ) divided and then each individual switching duration (α) Now,i ) to determine the corresponding Δα i is reduced, whereby the extension of the switching state ( u → N ext ) to determine the switching duration to be redistributed (Δα) solely by considering the first associated switching duration (α) Next,1 ) is done, - where in the case of a positive angular error (α Error,Now ) to shorten the space vector ( u → N ext ) the actual switching time to be redistributed (Δα) from the minimum of the maximum switching time (Δα) Error,max ) and the switching time ( Δα Next,max ) is determined, whereby the switching duration to be redistributed (Δα) is chronologically distributed to the corresponding switching durations (α) Next,i ) divided and then each individual switching duration (α) Next,i ) around the corresponding (Δα i) is reduced, whereby the extension of the switching state ( u → Now ) to determine the switching duration to be redistributed (Δα) solely by considering the first one for the switching state ( u → Now ) apparent switching time (α) Now,1 ) is carried out, where the modified set (α) of switching durations is output.

To provide an angle detection apparatus which can reduce the error of the angle which is caused by the eccentricity, by performing the reduction processing about smallest possible number of frequency bands and the lowest possible order of frequency band. An angle detection apparatus performs a first-order component reduction processing which reduces a first-order component which is a component of one rotation period in a mechanical angle of the rotor, to each of the first system two output signals; and calculates a first angle of the rotor, based on the first system two output signals to which the first-order component reduction processing was performed.

The invention relates to the technical field of mechanical arms, in particular to a path planning method and system for a mechanical arm to grab an electronic element, and the method comprises the steps: sequentially executing a single-joint reversing test on each joint, outputting an angle lag characteristic, and obtaining a transmission gap angle estimated value of each joint expressed by an angle dimension; dispersing a path between the starting configuration and the stopping configuration into a plurality of intervals, and calculating a position error amplification coefficient of each joint in each interval; introducing a time sequence profile function taking a time sequence parameter as an adjusting variable for each joint, and constructing a precision loss index by a transmission gap angle estimated value, a position error amplification coefficient and joint angle increment of each interval; and respectively enumerating a time sequence parameter candidate value for each joint, solving an optimal time sequence parameter of each joint which enables the precision loss index to be minimum, and generating an execution path. According to the method, the angle error of the worn joint occurs in the path stage with low error amplification cost as much as possible by adjusting the motion time sequence of each joint, and the shutdown maintenance frequency of the mechanical arm is reduced.

To suppress a maximum value of an angle deviation regardless of the position of a rotating body at the time of start-up. An absolute encoder includes a sensor configured to generate a signal indicating a value of a predetermined physical quantity varying depending on a rotation of a rotating body, a computer configured to generate angle information indicating an angle of the rotating body on the basis of the signal the computer determines an offset value for correcting an angle deviation indicating a difference between an angle indicated by the angle information and an actual angle of the rotating body to reduce the angle deviation, on the basis of the angle information at the time of start-up and a predetermined coefficient, and the computer corrects the angle deviation by using the offset value. The coefficient is calculated on the basis of the angle deviation.

The present application relates to a kind of compensation method and compensation device based on large length calibration device, the compensation method includes: setting the compensation reference point of large length calibration device;Real-time measurement value L of large length calibration device is obtained using the following formula: L=L laser +dz*R XY +dy*R XZ ;Wherein, L laser It is the real-time display value of laser interferometer, dy and dz are the distance between the target of laser interferometer and the target of the calibrated equipment in Y direction and Z direction respectively, R XY And R XZ It is the angle error of movable stage of large length calibration device relative to compensation reference point;The measurement value L is used to compensate the measurement value of the calibrated equipment.The present application solves the problems of complex compensation process, low efficiency and high cost in the prior art of large length calibration device.

The invention belongs to the technical field of mechanical engineering teaching instruments, and particularly relates to a multi-feature fusion tolerance fit practical training set and application thereof.The practical training set comprises a box body and a lining arranged in the box body, and a practical training base body and a matched tool are placed in the box body; the practical training base body comprises a first V-shaped groove and a second V-shaped groove which are respectively arranged on two adjacent side surfaces, a T-shaped through groove and a trapezoid-rectangular composite groove which are respectively arranged on the other two adjacent side surfaces, and a plurality of inclined surfaces arranged on the practical training base body. The two core shaft holes are formed in the plate surface of the practical training base body, the taper holes are formed in the plate surface of the practical training base body, and the arcs are arranged on the practical training base body. The training base body of the multi-feature fusion training set integrates three types of core detection groups including a length dimension measurement group, a form and position error measurement group and an angle error measurement group, and covers key teaching scenes such as aperture, arc, parallelism, taper and the like; and entity practical training of abstract form and position errors is realized through a tool collaborative measurement methodology.

The present application relates to a kind of underwater unmanned platform high reliability intelligent optical positioning method, belong to the technical field of autonomous underwater vehicle autonomous docking and recovery.The present application establishes AUV three-dimensional position angle-coordinate data set and AUV three-dimensional position solution network model, designs AUV three-dimensional position solution geometry loss function, realizes fast and accurate AUV three-dimensional position solution.The angle error of model position solution is 0.00013 ° , meet the requirement of positioning accuracy in underwater unmanned platform guide and dock.The hardware relied on by this method is multi-quadrant sensor, with the advantages of small volume, small amount of detection data, equipment installation is simple, etc., this method also has the advantages of small hardware operation amount, position solution is rapid during deployment.

To correct measurement signals that are provided by at least one sensor unit.SOLUTION: Two processed measurement signals are generated on the basis of at least two currently provided measurement signals, from which two corrected measurement signals are generated using angle-independent arithmetic operations and at least one correction coefficient, from which a corrected angle is calculated and output. A plurality of at least two measurement signals is provided in advance in order to determine at least one correction coefficient, from which the two processed measurement signals are generated. A corresponding angular error is calculated on the basis of the two processed measurement signals and a reference angle, and the angular error is subjected to a discrete Fourier transform. At least one correction coefficient is determined and stored on the basis of coefficients of the discrete Fourier transform, and at least one correction coefficient is determined such that a remaining angular error in the corrected angle is smaller than an angular error in an angle based on the two processed measurement signals.SELECTED DRAWING: Figure 3

The invention relates to the field of automatic driving, and discloses a pitch angle dynamic calibration method, which comprises the following steps of: acquiring N point cloud distances, horizontal angles and pitch angle information; calculating to obtain N point cloud coordinates; the pitch angle installation errors pitch in the x direction and the z direction are calculated according to the following formula, and the pitch angle is dynamically calibrated according to the pitch angle installation errors. According to the dynamic calibration scheme for the pitch angle based on the least square method, the pitch installation angle error of the radar can be accurately calibrated by screening effective point cloud information and utilizing the least square principle, and the scheme can be used for after-sales calibration and can also be used for real-time dynamic calibration. And good performance advantages are shown.

The invention discloses a two-axis antenna high-elevation tracking performance evaluation method, and relates to the technical field of communication. The method comprises the following steps: firstly, determining a spatial position relationship between a satellite and an antenna according to a satellite orbit height and a visual elevation angle of the antenna; secondly, generally determining a position set of the antenna and the satellite, and determining a directional angle, a spatial distance and a maximum angular velocity of the antenna tracking the satellite; then, a pitching pointing angle corresponding to the advanced tracking moment is calculated, and an advanced tracking strategy is formulated; and finally, calculating signal loss in the tracking process by combining the attenuation change of the electromagnetic wave free space and the tracking angle error so as to evaluate the tracking performance.

The present application belongs to the technical field of machine arm control, and relates to a bionic mechanical arm elbow joint adjusting angular velocity control method, which solves the problem that the existing method is difficult to meet the collaborative demand of soft start, smooth transition and rapid response in bionic action, comprising: constructing a terminal two-dimensional position model with the elbow as the origin, obtaining a starting and target position to generate a motion trajectory; based on forward and inverse kinematics, deriving an expected angle sequence and calculating a target angular velocity, real-time collecting current angle and angular velocity information; constructing an angle error signal, using a position type PID controller to generate an angular velocity control instruction, and dynamically setting PID parameters through an improved state optimization algorithm; inputting the control instruction into the elbow joint driving unit to realize dynamic adjustment and closed-loop control of the angular velocity. The effect of the present application is verified through experiments, and the experiments prove that the method can significantly improve the precision, robustness and dynamic response capability of the bionic mechanical arm angular velocity control.

The invention provides a pan-tilt prism angle error compensation method and device, electronic equipment and a storage medium, and relates to the technical field of photoelectric measurement. Controlling a holder to point to different directions of a plurality of total stations under a calibration working condition, jointly resolving angle error parameters based on multi-station observation data to form an error parameter vector, generating compensation pointing according to observation requests of the total stations in an operation working condition, and dynamically updating the error parameter vector based on multi-station error observation quantity; and the updated error parameter vector is used to carry out feedforward compensation on the pointing of the holder, and the updating strategy is adjusted according to the direction residual error. The problems that in the prior art, multi-station data are difficult to fuse, calibration depends on a single station or a fixed direction, error parameters cannot be comprehensively obtained, static updating of the error parameters cannot adapt to dynamic changes in operation, and compensation precision is reduced due to no residual adjustment mechanism can be solved.

The invention relates to a method for correcting measurement signals (MS1, MS2, MS3), wherein at least two measurement signals (MS1, MS2, MS3) are currently provided by a sensor unit (3), wherein at least two processed measurement signals (a, b) are generated based on the at least two currently provided measurement signals (MS1, MS2, MS3), from which, using angle-independent calculations and at least one correction coefficient (K), two corrected measurement signals (ac, bc) are generated, from which a corrected angle (WK) is calculated, wherein, for determining the at least one correction coefficient (K), a plurality of at least two measurement signals are provided in advance, wherein, based on the plurality of at least two previously provided measurement signals, two processed measurement signals are generated each, and a corresponding angular error is calculated based on the two processed measurement signals and a reference angle.wherein at least one correction parameter is determined based on at least one step of an iteratively applicable calculation method, wherein, based on the at least one correction parameter, the at least one correction coefficient (K) is determined such that a remaining angular error in the corrected angle (WK) is smaller than an angular error in an angle based on the two processed current measurement signals (a, b), and a sensor arrangement (1).