27 results about "Angular deviation" patented technology

The invention discloses a motor insertion piece positioning detection method using optical recognition, and particularly relates to the technical field of motor manufacturing and detection. Collecting a high-resolution image containing the insert structure; carrying out image gray level enhancement and reflection interference suppression; extracting insert edge gradient information, and constructing an insert boundary point set; fitting the profile of the insert according to the boundary point set, and correcting the profile through a shape prior model; extracting barycentric coordinates and center positioning features of the inserts, calculating offsets delta X and delta Y and an angular deviation theta, and constructing a position offset vector V; the V is compared with a set tolerance model T, and whether the insertion piece is qualified or not is judged; an error distribution thermodynamic diagram is generated based on the offset data of the multiple punching sheets, and trend evaluation of the mold state and the material stability is achieved; according to the method, high-precision, full-automatic and visual detection of the sheet inserting position can be realized, and the sheet punching quality control level is improved.

The invention discloses a horizon astronomical telescope pointing error correction method based on machine learning. The method comprises the following steps: recording fixed star data; constructing a telescope rack pointing model, calculating a model coefficient, performing coarse correction on a new observation target, accumulating observation data, and preprocessing the observation data; training the preprocessed training set data by using an XGBoost regression model, predicting condition parameters of a new observation target by using a trained error prediction model to obtain normalized azimuth angle deviation and elevation angle deviation predicted values of the new observation target, and carrying out reverse normalization processing on the predicted values to obtain an actual rack deviation angle; and superposing the rough correction deviation angle and the actual rack deviation angle to serve as a final offset to be injected into a telescope rack tracking program so as to realize correction of a pointing error. According to the invention, the pointing error can be within a very small range, and the pointing precision of the horizon telescope can be effectively improved.

The invention discloses a laser spot relative position measurement-based CA type five-axis machine tool rotating shaft zero error and axis error measurement compensation method. The method comprises the following steps of S1, detection system preparation: clamping or fixing a laser pen to a main shaft; s2, the A-axis zero error is measured and compensated, wherein the A-axis zero error is defined as the angle deviation between the actual posture and the theoretical ideal posture of the execution tail end of the machine tool when the rotating shaft is set to be at the 0-degree reference position; s3, measuring and compensating a C-axis zero error, wherein the C-axis zero error is defined as the angle deviation between the actual posture and the theoretical ideal posture of the execution tail end of the machine tool when the rotating shaft is set to be at the 0-degree reference position; s4, performing measurement compensation on the deviation of the A axis-main axis rotation center line in the Y direction; s5, measuring and compensating the deviation of the C-axis-main axis rotation center line in the Y direction; and S6, performing measurement compensation on the deviation of the C-axis-main axis rotation center line in the X direction.

The invention relates to the technical field of material characterization and nondestructive testing, and discloses an X-ray metal stress rapid detection device, which is characterized in that a composite sensing head comprises six groups of line laser scanning heads, a micro-focusing X-ray tube, a CMOS detector, an infrared thermal imager and an ultrasonic transceiver; the dynamic pose system ensures vertical incidence of X-rays through a six-axis mechanical arm and an inclination angle compensation platform; the high-frequency processing module fuses the multi-physical field data and generates a stress nephogram through an AI algorithm; the safety protection structure comprises an electromagnetic shielding cover and a lead glass window. The six-axis mechanical arm is combined with the dip angle compensation platform to dynamically adjust the incident angle of the X-ray, it is ensured that the X-ray always vertically enters the curved surface, Bragg condition misalignment caused by dip angle deviation is eliminated, seven kinds of stress field data such as residual stress, thermal stress and defect stress can be synchronously collected, and dynamic stress calculation larger than or equal to 20 kHz is achieved through the high-frequency processing module.

The invention discloses a rotary table shafting assembling method based on a laser centering instrument. The rotary table shafting assembling method comprises the following specific steps that a left trunnion and a right trunnion are installed in installation holes of a first frame respectively; assembling left and right trunnions, left and right bearings and left and right bearing seats to form left and right trunnion systems; the left and right trunnion systems are mounted in mounting holes of the second frame of the rotary table; and the fixing parts are fixed on the outer circumferences of the left trunnion and the right trunnion. Adjusting the heights and the positions of the two measuring units to obtain the shaft deviation and the angle deviation of the left trunnion system and the right trunnion system; and the shaft hole and the end face of the second frame are ground and repaired, the left and right trunnion systems are installed again, and the shaft deviation and the angle deviation of the left and right trunnion systems are measured again through the laser centering instrument. And the left and right trunnion systems are disassembled respectively, the first frame is installed in the second frame, the left and right trunnion systems are installed, and assembly of the trunnion systems is completed. According to the method, when the trunnion system is assembled, the centering precision is detectable, the operation is convenient and visual, the positioning precision is high, the assembly precision requirement is easily met, and the assembly efficiency is improved.

Methods and systems for a microscope system are provided. In one example, a method for image-based detection of the optical orientation for the microscope system includes acquiring a multitude of contrast samples of an object's field of view, determining a contrast distribution for a multitude of subdivided sub-areas of the field of view based on the multitude of contrast samples, and generating an angular deviation value based on a focus position derived from the contrast distribution for each of the multitude of subdivided sub-areas. In another example, the method further includes adjusting the microscope system based on the angular deviation value.

This invention discloses a high-precision visual alignment and bonding method, comprising the following steps: S1, scanning a flexible workpiece using a TOF camera or structured light sensor to obtain three-dimensional point cloud data of the surface of the flexible workpiece; relating to the field of image recognition technology, this application uses a TOF camera or structured light sensor to scan a flexible workpiece to obtain three-dimensional point cloud data of the surface of the flexible workpiece. After noise reduction, smoothing, and feature extraction, a hyperelastic constitutive model of the flexible workpiece is constructed to generate three-dimensional deformation compensation parameters. Based on the three-dimensional deformation compensation parameters, the robotic arm is controlled to perform alignment adjustment to complete the bonding. This solves the problem that existing 2D vision cannot handle the Z-axis warping, stretching deformation, and angular deviation of flexible workpieces, reduces the error of flexible workpieces when bonding curved surfaces, improves the accuracy of visual alignment and bonding, reduces the occurrence of hollow areas in the bonding of multi-layer flexible workpieces, and thus improves the yield rate of bonding.

The application provides a method for measuring the polarization degree and angle deviation of a polarizer, which is based on a straight-through light path. After Fourier coefficients a2, b2, a4 and b4 are calculated according to collected light intensity, the polarization degree of the polarizer, the angle deviation between a polarizer and an analyzer, and the polarization performance of a light intensity measuring device can be directly obtained by performing an iterative calculation process. Meanwhile, since the polarization performance of the light intensity measuring device can be directly calculated without additional measurement, sample information introduced in a traditional ellipsometer correction scheme can be excluded.

The invention provides a driving structure, a theodolite and astronomical observation equipment, and the driving structure comprises two groups of harmonic driving assemblies which are perpendicular to each other; wherein each group of harmonic driving assembly comprises a power source and a harmonic assembly connected with the power source; the harmonic assembly is used for transmitting power transmitted by the power source to the correspondingly connected output shaft through harmonic speed reduction; the output shafts comprise the horizontal shaft or the vertical shaft of the theodolite, each harmonic driving assembly is connected with one output shaft of the theodolite, the output shafts, correspondingly connected with the two harmonic driving assemblies, of the theodolite are different in type, a large-dead-weight lens cone can be effectively driven to rotate, the problem that an existing structure cannot drive the large-load lens cone is solved, and meanwhile the structure is simple and convenient to operate. The transmission precision of harmonic transmission is higher, the angular deviation in the driving process can be reduced, and the pointing control precision of the lens cone is improved.

The invention provides a calibration method of electron beam measuring equipment, a medium, a product and equipment. The method comprises the following steps: acquiring a calibration formula; determining an image acquisition position of the electron microscope scanning image according to the calibration formula; generating an electron microscope scanning image at the image acquisition position of the detection wafer through electron beam measurement equipment; determining a plurality of to-be-measured feature patterns in the electron microscope scanning image according to the calibration formula, and carrying out critical dimension measurement on the to-be-measured feature patterns to obtain coordinate information corresponding to each to-be-measured feature pattern; fitting the coordinate information to obtain a straight line of the to-be-measured feature graph along the coordinate axis direction; and determining the angular deviation of the electron beam measuring equipment according to the straight line, and compensating the angular deviation into the electron beam measuring equipment. Through the method, high automation of an electron beam measuring equipment calibration scheme can be realized, result fluctuation caused by operation difference of personnel is thoroughly eliminated, high consistency and repeatability of calibration operation are ensured, and calibration efficiency is greatly improved.

The utility model discloses correction equipment for an optical diopter tube barrel, and relates to the technical field of correction equipment. The device comprises a rectangular bedplate, wherein an adjusting mechanism and a lifting mechanism are arranged on the rectangular bedplate; a pipe barrel fixing disc penetrates through the rectangular table plate, the pipe barrel fixing disc is rotationally connected with the rectangular table plate, an optical diopter pipe barrel is arranged at the top of the pipe barrel fixing disc, the adjusting mechanism comprises two rectangular supporting plates fixedly connected to the bottom of the rectangular table plate, and a bidirectional threaded rod is rotationally connected between the two rectangular supporting plates; the front side of the rectangular supporting plate located on the front side is fixedly connected with a first motor. According to the utility model, through the arrangement of the adjusting mechanism, the problems that the optical axis of the tube barrel is difficult to coincide with the optical axis of a measured target in the use process of the existing correction equipment for the optical diopter tube barrel, so that the angle deviation is generated in the measurement process, the final measurement data has larger error, and the measurement result is larger or smaller than the actual value are solved.

An appliance including: a vessel having a chamber for containing flowable substance; a first sensor arrangement measuring a parameter indicative of the amount of flowable substance in the chamber; wherein, the appliance is configured to determine a target angular deviation from a reference axis required to pour a predetermined amount of flowable substance from the chamber

To provide a system for spatio-temporally calibrating optical sensors.SOLUTION: A processor in a system for calibrating a pair of optical sensors that form an overlapping area in a scanning field of view in which scanning directions of optical scanning are rotated in opposite directions about main axes parallel to each other in a host vehicle defines a scanning direction set symmetrically in each optical sensor as a reference direction. When a scanning azimuth in which each optical sensor 40 detects the same target in the overlapping area is defined as a detection azimuth, the control device is configured to monitor an angle deviation Δ θ between detection angles θ L and θ R from a reference azimuth to the detection azimuth of the same target in each optical sensor, and calibrate a time difference given between reference scanning times tL and tR at which the reference azimuth is scanned in each optical sensor to a correction time difference Δ t correlated with the monitored angle deviation Δ θ.SELECTED DRAWING: Figure 5

This invention relates to the field of photogrammetry, specifically to a land boundary measurement method based on UAV imagery. The method includes the following steps: extracting two-dimensional farmland boundaries by filtering pixels using frequency domain data and baseline phase parameters; calculating angular deviation mapping to generate a dynamic topological weight coefficient set; introducing an adjustment model with error constraints to optimize and obtain three-dimensional point cloud and orientation data; and extracting profile sequences to perform elevation difference calculations to obtain variation features and filter abrupt change points to output measurement records. In this invention, by combining prior error constraints for adjustment optimization, terrain interference is effectively overcome and systematic ranging offsets of the equipment are eliminated. Elevation gradient calculations are performed on the point cloud, and a penalty term is constructed using roughness and vegetation attributes to deeply suppress high-frequency noise caused by crop shading and gravel. This accurately distinguishes between real embankment fractures and vegetation artifacts, providing an anti-interference judgment benchmark for extracting boundary abrupt change points and ensuring the spatial positioning accuracy of the measurement records.

This invention provides a method for calculating correction parameters for motion errors in a machine tool, and the machine tool itself. The method comprises the following steps: a first measurement step, measuring three measuring surfaces A to C of a right-angle standard using a contact probe; a second right-angle calculation step, calculating a first right angle based on the measurement results of measuring surfaces A and B, and calculating a second right angle based on the measurement results of measuring surfaces A and C; a difference calculation step, calculating the difference between the two right angles; a judgment step, comparing the difference with a difference threshold; a right-angle identification step, calculating the average value of the two right angles if the difference is below the difference threshold, and calculating the angular deviation of the translation axis if the difference exceeds the difference threshold, and calculating a corrected right angle based on the angular deviation and either the first or second right angle; and a correction parameter setting step, setting the correction parameters based on the average value or the corrected right angle.

The invention provides a high-resolution angular deviation measurement method based on phase-sensitive CPSDOCT, which can remarkably improve the accuracy and sensitivity of angle measurement by utilizing the characteristics of high resolution, non-contact property and rapid imaging of an OCT technology, overcome the limitation of the traditional technology on the aspects of stability and applicability, and realize real-time and efficient angle imaging and measurement. Through high-resolution imaging of the OCT technology, very accurate surface three-dimensional data can be obtained, and then very tiny angle change is calculated; the OCT technology does not depend on a traditional contact type measuring tool, errors caused by contact friction, deformation and other factors are avoided, and the OCT technology is suitable for measuring precise or vulnerable objects; the method can realize rapid measurement, and is suitable for real-time quality control.

This provides a simple, easily implementable measurement technology that avoids the use of high-end optical components, thereby meeting the demands of mass production. [Solution] The method includes (i) a sample comprising an outer flat first surface 22a and an outer flat second surface 22b nominally inclined upward at a nominal angle with respect to the first surface 22a, (ii) generating a second incident LB 205b parallel to a first incident light beam (LB) 205a, (iii) obtaining a first return LB 225a, (iv) obtaining a second return LB 225b by bending the second incident LB 205b at a nominal angle, reflecting the bent LB from the second surface 22b, and bending the reflected LB at a nominal angle, and (v) estimating the actual inclination angle between the first surface 22a and the second surface 22b based on measuring a first angular deviation between those return LBs.

The present application belongs to the technical field of hydraulic support group control, and particularly relates to a hydraulic support drift angle correction method and system for steeply inclined large-mining-height working face. Anchor points are arranged on the end and chute side, and data such as IMU, stroke / pressure, UWB / laser and conveyor attitude are collected, and a virtual strike reference angle is obtained through robust regression and consistency constraint; the overall deviation is determined according to the strike number and sliding window (same number rate / variance / mean), and the staggered strategy of remainder grouping is adopted to perform continuous small-step shaping, so that the adjacent drift angle deviation RMS is less than or equal to the threshold value, and then the residual deviation is zeroed in the single-frame closed loop, thereby solving the problem that the center line of the conveyor or chute is taken as a single reference datum, and finally leading to the problem of more and more deviation of the drift angle of the whole line support.

The application discloses a kind of antenna mechanism rotation accuracy test methods, laser tracking test technology is applied to antenna mechanism rotation accuracy test, by calculating the angular deviation α of all adjacent rotation positions ’ i -α i , finally obtain the root mean square value of all the angular deviations, the root mean square value of all the angular deviations is the rotation accuracy of the measured shaft of the antenna mechanism. The application utilizes the high-precision point measurement function of laser tracker, realizes the rapid test of mechanism rotation accuracy through multi-point acquisition, multi-point fitting and comprehensive analysis, avoids the influence of rotation error of turntable, axis parallel adjustment error, artificial collimation error and prism error in traditional autocollimation measurement method, expands the range of test objects, and greatly improves the test efficiency and reliability of antenna mechanism rotation accuracy.

The invention relates to a method (12) for adjusting a main headlight (10) of a motor vehicle (1), - in which the motor vehicle (1) is positioned in front of a wall (19), - in which a laser (21) is arranged on a rear wheel (5) of the rear axle (4) and a reference line (23) is generated on the wall (19) with laser light (22), - in which a reference feature (24) is generated on the wall (19) by means of the respective main headlight (10) headlight light (20), - where a longitudinal distance (28) is measured between a vehicle reference point (29) and the wall (19), - in which, depending on the measured longitudinal distance (28), an angular deviation (30) between the reference line (23) and a target position (27) of the reference feature (24), which the reference feature (24) has on the wall (19) at the measured longitudinal distance (28) and at a target alignment of the main headlight (10), is calculated, - where a digital angle correction is activated on the main headlight (10) according to the calculated angle deviation (30), the alignment of the main headlight (10) is adjusted so that the reference feature (24) on the wall (19) lies on the reference line (23), and the angle correction is deactivated.

The present invention relates to a method for automatically realigning the navigation of an optronic system (18) moving around a navigation zone, the method comprising, over time, the following steps: estimating, by means of a navigation device, a current position and a current orientation for the optronic system (18); determining reference objects visible from the optronic system (18), referred to as expected objects; acquiring an imaging datum; searching the imaging datum for objects referred to as terrain objects; determining, for each terrain object, an angular deviation on the basis of the terrain objects and the expected objects; and updating and maintaining the navigation of the navigation device on the basis of the angular deviation determined for each terrain object.

The utility model discloses a spline coaxiality detection device, and relates to the technical field of spline coaxiality detection. The structure comprises a detection equipment box and a spline lower positioning seat. The detection equipment box comprises an upper box body and a lower box body which are connected into a whole; a partition flat plate is arranged between the upper box body and the lower box body; a vertically arranged linear guide rail is mounted on the inner wall of the upper box body; a linear sliding block is slidably mounted on the linear guide rail; a spline upper positioning seat is mounted on the linear sliding block; the spline upper positioning seat comprises a rotary upper tip; and the spline lower positioning seat comprises a lower tip which is rotationally matched with the partition flat plate through a bearing. According to the utility model, the high-precision angle measurement capability of the double-shaft photoelectric auto-collimator is combined with the precise position adjustment of the lifting device, so that the precise detection of the coaxiality of the spline is realized. The device can effectively measure the angular deviation of each section of the spline relative to the reference axis, further calculates the coaxiality error, and meets the high-precision detection requirement.

This invention discloses a portable image acquisition geometric adaptive correction method, belonging to the field of medical imaging technology. The method involves installing a first IMU at the X-ray tube end and a second IMU and an array of curvature sensors at the flexible imaging plate end to acquire relative attitude and flexible imaging plate deformation data in real time. When an angular deviation is detected between the X-ray tube axis and the equivalent principal normal of the imaging plate, a multi-degree-of-freedom robotic arm is driven to perform motion compensation. Simultaneously, a three-dimensional curved surface model of the flexible imaging plate is constructed based on the deformation data, and the original X-ray image is mapped back from the curved surface coordinate system to the standard planar coordinate system, outputting the corrected image. This invention achieves adaptive correction in non-standard environments, significantly reducing reliance on technician experience.

This utility model discloses a level's i-angle self-calibration positioning device, including a base with a detection component on top. The detection component includes a groove, a crossbar fixedly connected between two sliders, a level body movably placed inside a recessed block, an assembly frame fixedly connected to the top of the crossbar, and an industrial camera fixedly mounted on the inner wall of the support frame. This utility model relates to the field of surveying instrument technology. In this level's i-angle self-calibration positioning device, the level body is placed inside the recessed block, using a marker block on the side of the level as a target. The industrial camera lens is coaxial with the level's eyepiece, ensuring the camera captures clear images of the marker block in real time, providing raw data for the controller to calculate the i-angle deviation. Starting the servo motor drives the translation screw to rotate, the nut block moves along the screw and causes the level to shift position. The camera acquires images of the marker block at different positions, and the controller calculates the i-angle deviation and displays the results. The process is seamless and efficient.

This invention discloses an automatic docking method for socket-type circular pipes based on binocular vision, comprising the following steps: pre-operation inspection; installing pipe assembly fixtures onto a first pipe assembly and a second pipe assembly; acquiring images at the docking ports and selecting control points from the contour lines of the images at each docking port; establishing a spatial coordinate system at the docking ports of the two pipe assemblies, and estimating the spatial pose of the docking ports of the two pipe assemblies based on the spatial coordinates of the control points; calculating the number of pipes to be docked; matching the docking ports of the pipes in the two pipe assemblies, calculating the angular deviation of each axis of the coordinate system, and planning a pipe attitude adjustment scheme; setting an angular deviation threshold; when the angular deviation of the pose is less than the angular deviation threshold, executing the axial feed of the selected pipes in the first pipe assembly; traversing all pipes, and ending the operation when all pipes are detected to be docked.

The application discloses a method and a detection device for judging the angle deviation of a crystal boundary in cast single crystal silicon, and relates to the technical field of crystal growth. The method comprises the following steps: cutting a <100> growth crystal direction cast single crystal silicon ingot, wherein the cutting direction is perpendicular to the solidification direction of the cast single crystal silicon ingot, and a single crystal sample is obtained through the cutting; performing etching or photoluminescence testing on the single crystal sample, and obtaining etching pictures or photoluminescence pictures of the single crystal sample; identifying the crystal boundary in the pictures; identifying micro-twins on both sides of the crystal boundary; and judging and calculating the angle deviation θ of the crystal boundary. The judging method is simple and convenient, has high accuracy, can be applied in actual production, and can be effectively used for the guidance of research and development.

A device for determining an angular deviation between a line of sight and a line of fire of a gun is proposed. The device comprises: at least one clocked light source for generating at least one coherent light beam and for emitting the at least one generated coherent light beam, at least one neuromorphic camera for receiving at least the at least one emitted coherent light beam and for providing detection data at least from the received light beam, and a computing unit for determining the angular deviation by means of a correction value indicative of the angular deviation, wherein the computing unit is configured to determine the correction value as a function of at least one specific base calibration value and the provided detection data.