32 results about "Angular shift" patented technology

The invention relates to the technical field of image stabilization, in particular to an electronic anti-shake method and system, and the method comprises the following steps: obtaining an angular velocity through a gyroscope, obtaining an angular displacement vector through integration, outputting inter-frame motion transformation parameters through time alignment, segmenting an image, calculating optical flow features, and outputting regional distortion feature distribution. The method comprises the following steps: performing spatial transformation to compare direction mark abnormity to generate a full-image compensation parameter mapping table, performing region transformation based on mapping to generate an anti-shake compensation image frame, performing prediction track Kalman filtering to determine a cutting boundary, and performing dynamic cutting to output a stable image sequence. Local distortion is accurately corrected by combining optical flow feature region calculation and abnormal direction comparison, self-adaptive compensation is achieved through nonlinear reverse mapping and linear translation grading processing, boundary control and view keeping are ensured through motion trail prediction and dynamic cutting, and vibration blurring and offset are remarkably reduced.

This application discloses a laser marking method, equipment, and storage medium for cylindrical workpieces, belonging to the field of laser marking technology. The method includes: acquiring the pattern to be marked and the radius parameters of the cylindrical workpiece; based on the radius parameters, equating the angular displacement of the rotation axis to a virtual linear motion axis; constructing a virtual planar coordinate system based on the virtual linear motion axis and the scanning axis of the galvanometer; mapping the pattern to be marked onto the virtual planar coordinate system; generating marking path instructions for controlling the galvanometer and rotation axis; and driving the galvanometer to perform linear scanning and the rotation axis to rotate according to the marking path instructions, so that the laser beam etches the pattern to be marked on the surface of the cylindrical workpiece. This application, through an algorithmic compensation mechanism for constructing the virtual planar coordinate system, ensures the integrity and positional accuracy of the marked pattern, thereby achieving a marking effect that meets the needs of batch processing on a low-cost hardware platform.

The invention discloses a high-precision plane mirror pose precision adjusting device, which comprises a base, an orientation adjusting mechanism, a pitching adjusting mechanism, a mirror chamber and a three-point gap eliminating mechanism, and is characterized in that each of the orientation adjusting mechanism and the pitching adjusting mechanism comprises a driving assembly and a linear sliding block; the linear sliding block is connected with the execution component through the three-point type gap eliminating mechanism, and the three-point type gap eliminating mechanism comprises an adapter, a fisheye bearing connecting lead screw, a plug screw, a locking nut and an adjusting gasket and is used for eliminating radial and axial gaps at the connecting position at the same time. According to the invention, the high-performance transmission chain is combined with the three-point gap elimination mechanism, and the standard plane mirror is used as an optical function carrier of the system, so that the micro-arc-level angular displacement adjustment precision is realized. Theoretical calculation verifies that the azimuth adjustment resolution and the pitching adjustment resolution are both superior to 0.5 mu rad. The device has the excellent characteristics of gapless transmission, motion decoupling, micro-vibration resistance, long-term stable work and the like.

The invention provides a part continuous self-adaptive detection method and device, a medium and a product. The method comprises the following steps that a to-be-detected part is driven to rotate along with a transparent rotating disc at a preset initial angular speed; determining a first reference rotation time delay and a second reference rotation time delay respectively by combining the angular displacement and the initial rotation angular velocity of the sensing position on the transparent rotating disc and the upper and lower surface imaging positions; when the part rotates and passes through the sensing position, the double timers are synchronously started; acquiring correction parameters in real time in the rotation process to correct the two reference time delays to obtain corresponding correction time delays; when the timers reach the correction time delays respectively, images of the upper surface and the lower surface of the part are collected in sequence; and combining the upper surface image and the lower surface image, processing by a preset analysis method, and generating a detection result. According to the method, self-adaptive correction at the imaging moment can be achieved in the continuous rotation process of the part, the influence of rotating speed fluctuation and mechanical errors on synchronous imaging is eliminated, it is guaranteed that the image position is accurate, the quality is stable, and the detection precision and reliability are improved.

The invention relates to a motion parameter verification method and device, computer equipment and a storage medium. The method comprises the following steps: applying at least one calibration driving instruction to an anti-shake execution mechanism of to-be-tested equipment, and acquiring image data corresponding to each calibration driving instruction acquired by the to-be-tested equipment; matching the reference point displacement feature in each piece of image data with a preset target displacement feature, and determining a target driving instruction; the preset target displacement feature is obtained by calibrating the to-be-measured equipment and / or equipment identical to the to-be-measured equipment according to a preset angular displacement; calculating a gain coefficient of the gyroscope according to the target driving instruction and the preset angular displacement; and determining a motion parameter verification result according to the gyroscope gain coefficient. The method can reduce the cost and improve the verification efficiency.

The application relates to the technical field of sensors, in particular to a high-precision linear displacement and angular displacement system which comprises a metal object moving target, a detection device, a PCB circuit board and a planar coil, the planar coil is printed on the PCB circuit board, the planar coil comprises a transmitting coil and a receiving coil, the transmitting coil and the receiving coil are connected with the detection device, the transmitting coil comprises a transmitting coil one and a transmitting coil two, the receiving coil comprises an A-group receiving coil one and an A-group receiving coil two and a B-group receiving coil one and a B-group receiving coil two, the application is resistant to temperature drift, is very small in influence on environmental temperature change, is in time in signal response, is very suitable for dynamic signal detection, is stronger in anti-interference, is resistant to severe environment, is convenient for on-site debugging and software upgrading, is modularized in hardware, and is more suitable for hardware module replacement and upgrading.

An apparatus (30) for controlling fluid flow in a flexible tube (10) includes two rotatable spools (22, 32), a motor (56), an encoder (64), and a processor (202). Each spool includes a tube-engaging surface portion having a shape that varies around at least a portion of the spool's periphery. The motor includes a rotor (62) mechanically coupled to the spools such that operation of the motor causes rotation of the spools. The encoder is mechanically coupled to the rotor and is configured to measure angular displacement of the rotor. The processor determines (902) a target angular displacement of the rotor, receives (904) a measurement signal (64) from the encoder indicative of angular displacement of the rotor, and outputs (906) a motor control signal (67) to set the angular displacement of the rotor as measured by the encoder to the target angular displacement.

This invention proposes a method and system for monitoring the lead angle in inter-satellite laser communication. In inter-satellite and satellite-to-ground laser communication, there is high-speed relative motion between the satellite and the target. Besides accurately tracking the target's position, the tracking system must also compensate for alignment errors caused by relative angular displacement during the beam's round-trip time. This means the output optical axis and the tracking optical axis need to deflect at a certain angle; this angle is the lead angle. This invention provides a method for calculating the magnitude of the inter-satellite lead angle and decomposes it into azimuth and elevation axes.

The invention provides a self-adaptive angular displacement measuring device. The self-adaptive angular displacement measuring device comprises an adapter plate, a connecting block, a shell, an end cover, a rotating shaft, a magnetic nest, magnetic steel, a first deep groove ball bearing, a second deep groove ball bearing, an elastic element and a circuit board. According to the device, the open spherical joint is adopted and is in interference fit with the mounting groove, the elastic connection mode is adopted, repeated use can be achieved, the floating eccentric joint is adopted, under the eccentric condition, the joint can float automatically, unconstrained angular displacement measurement can be achieved, and high adaptability is achieved; a split type connection mode is adopted, coarse adjustment during zero alignment of the angular displacement measuring device can be achieved, the flange plate at the bottom of the adapter plate is provided with a plurality of identical annular installation grooves, the annular installation grooves can be matched with different interfaces, and fine adjustment is achieved.

The application discloses a high-speed rotary table rotation angle measuring device and a measuring method thereof, and belongs to the technical field of optical sensing measurement. According to the technical scheme of the application, rotary table angular displacement is linearly converted into optical path variation; a rotating interference pattern is generated by using conjugate vortex light interference; a double-mode detection system in which a high-speed photoelectric detector and a camera work synchronously is adopted to perform high-speed counting on the whole period number of the interference pattern and high-precision analysis on the non-integer period rotation angle, and finally, the rotation angle is calculated by fusing data. According to the application, the angular displacement-linear displacement conversion mechanism is adopted, so that the large-angle measurement range far exceeding the traditional method is realized. Secondly, the double-mode detection scheme perfectly solves the contradiction between high-speed measurement and high-precision requirement. Finally, the conjugate light interference design effectively suppresses common-mode noise, and significantly improves the anti-interference ability and measurement stability of the device. The high-speed, high-precision, wide-range and high-robustness test of the high-speed rotary table precision is realized.

In an embodiment, a method includes: placing a wafer on an implanter platen, the wafer including alignment marks; measuring a position of the wafer by measuring positions of the alignment marks with one or more cameras; determining an angular displacement between the position of the wafer and a reference position of the wafer; and rotating the implanter platen by the angular displacement.

This application discloses a method, apparatus, electronic device, and storage medium for determining angular displacement. Specifically, it includes: acquiring two voltage signals output by an angle meter mounted on a target object, and using them as a first signal and a second signal, respectively; wherein the first signal is output before the second signal; comparing a second voltage value corresponding to the second signal with a preset voltage threshold value; and determining the angular displacement occurring during the movement of the target object based on at least one of the comparison result, the second voltage value, the first voltage value corresponding to the first signal, and the calibration state of the angle meter. By distinguishing between high and low voltage outputs of the two voltage signals, the angular displacement of the loader's working device under different conditions is calculated separately, effectively improving calculation accuracy, obtaining continuous angular displacement calculation values, and avoiding step phenomena in the calculated angular displacement value at signal transition points caused by signal errors, which could affect measurement accuracy or even lead to control errors of the working device.

A method and system for of relative pose estimation between two or more sensors is disclosed. The system and method may include receiving a time frame, determine expected change in relative pose of at least two of the sensors, within the time frame and expected relations between angular directions of at least two of the sensors, calculating, by a processor, for each sensor a pose shift, calculating for each sensor the sensor's angular directions within the time frame, comparing relations between different sensors' angular directions, at each point in time, based on the expected relations between angular directions to determine a common direction of the two or more sensors, comparing common directions of the two or more sensors between different points in time based on the expected change in relative pose, and estimating the relative pose between the two or more sensors based on the comparison.

A lidar transceiver device for achieving a full vertical field of view, and a usage method. A fixing frame (7) is arranged on a base (6); a multi-core optical fiber array (1), a rotating silicon wafer (2) and a biconvex aspherical lens (3) are sequentially arranged on the fixing frame (7); and the focal point of the biconvex aspherical lens (3) falls on a rotating mirror (4), such that the multi-core optical fiber array (1), the rotating silicon wafer (2), the biconvex aspherical lens (3) and the rotating mirror (4) are sequentially arranged along an optical path. An optical signal emitted by the multi-core optical fiber array (1) reaches the biconvex aspherical lens (3) after passing through the rotating silicon wafer (2); the rotating silicon wafer (2) is configured to adjust the angular displacement of the optical signal in the vertical direction, and the angular displacement of the optical signal in the horizontal direction is adjusted by the rotating mirror (4); and the rotating mirror (4) reflects the focused optical signal to a target object (5), and the optical signal is reflected back to the multi-core optical fiber array (1) along the original optical path after reaching the target object (5), thereby realizing the scanning of the target object (5) in the vertical direction and the horizontal direction.

The invention discloses a high-precision transposition locking device and method based on an end face fluted disc, and relates to the technical field of servo control technologies and inertial navigation systems. On one hand, the invention provides a high-precision transposition locking device based on an end-toothed disc pair, which comprises a fixed fluted disc, a movable fluted disc, a lifting transmission system and a dense ball supporting shaft system, the fixed fluted disc and the rotary fluted disc are used in pairs, so that the device has the advantages of high repeated positioning precision, automatic centering, no angular displacement or idle stroke and the like; the dense ball supporting shaft system is used as a support to realize the locking function and the stable rotation function of the movable fluted disc and the inertial unit load lifting and degrading lock under the working conditions of large inclination angle and large unbalance load, so that the high-precision mechanical locking and positioning requirements can be met, and the long-term stable work can be ensured; on the other hand, the invention provides a method for knowing angle information immediately after startup, so that the overall system calibration time is saved; the invention further provides a stepping motor jitter elimination method based on variable acceleration, and the method can overcome large eccentric disturbance torque.

The utility model discloses a horizontal control surface deflection angle detection clamp, which belongs to the technical field of aircrafts and comprises a clamp main body used for fixing a horizontal control surface, an angle adjusting disc is arranged on the clamp main body, an angular displacement sensor is mounted on the angle adjusting disc, and the angular displacement sensor acquires angle data of the horizontal control surface. According to the utility model, on the basis of meeting the requirement of light weight, the problem of errors caused by manual measurement and calculation of a traditional mechanical bevel protractor is avoided, the deflection angle of the control surface can be reflected more accurately, and data of a plurality of clamps can be measured, analyzed and compared in real time through data transmission in a wireless mode.

The invention relates to the technical field of angular displacement monitoring, in particular to the technical field of bolt or nut angular displacement monitoring, and discloses an angular displacement monitoring method and device based on a coding angle scale and a storage medium. Determining region coding information of each region division result according to the coding switching sequence, constructing an angle detection disc, performing data acquisition operation on the to-be-detected component to obtain a data acquisition result, and screening out target detection data; and obtaining component attribute information of the to-be-detected component, and determining a coding detection result according to the target detection data, the component attribute information and the measurement mapping relation so as to determine an angular displacement monitoring result of the to-be-detected component. Therefore, the angular displacement of the bolt or the nut can be intelligently measured and calculated based on the angle scale, the intelligence and the efficiency of measuring the loosening angle of the bolt or the nut can be improved, and the accuracy and the reliability of measuring the loosening angle of the bolt or the nut can be improved.

The application relates to a motion parameter verification method and device, computer equipment and a storage medium. The method comprises the following steps: applying at least one calibration driving instruction to the anti-shake execution mechanism of a to-be-tested device, and acquiring image data corresponding to each calibration driving instruction collected by the to-be-tested device; matching a reference point displacement feature in each image data with a preset target displacement feature to determine a target driving instruction; the preset target displacement feature is obtained by calibrating the to-be-tested device and / or a same device as the to-be-tested device according to a preset angular displacement; calculating a gyroscope gain coefficient according to the target driving instruction and the preset angular displacement; and determining a motion parameter verification result according to the gyroscope gain coefficient. The method can reduce the cost and improve the verification efficiency.

The invention discloses a non-contact angular displacement sensor calibration method, and relates to the technical field of sensor calibration. Comprising the following steps: S1, acquiring calibration data of a sensor to be measured at a calibration angle interval; s2, performing data verification on the calibration data of the to-be-detected sensor in sequence by using a preset verification rule, and obtaining the calibration data passing the verification to form a calibration data detection sequence containing a plurality of calibration intervals; s3, comparing the current angle value of the sensor to be detected with the calibration data detection sequence to obtain a calibration interval to which the current angle value belongs and calibration data at two ends of the calibration interval; and S4, calibrating the current angle value by using the calibration data at the two ends of the calibration interval to which the current angle value belongs and the calibration angle interval, and outputting the calibrated angle value. The method and the device are used for solving the problems of complicated operation, limited precision output and poor universality in the existing calibration technology.

The duplex angular displacement potentiometer comprises a shell, a rotating shaft, a detection assembly and a switch assembly, the rotating shaft comprises an outer rotating shaft and an inner rotating shaft, the outer rotating shaft penetrates through a corresponding through hole of the shell, the outer end of the outer rotating shaft is located outside the shell, and the inner end of the outer rotating shaft is located in the shell; the outer rotating shaft is provided with an axially-through central through hole, the inner rotating shaft penetrates through the central through hole, the number of the detection assemblies and the number of the switch assemblies are both two, one detection assembly and one switch assembly which are installed in the shell are connected with the outer rotating shaft, and the other detection assembly and the other switch assembly which are installed in the shell are connected with the inner rotating shaft. According to the angular displacement potentiometer, the two detection assemblies and the two switch assemblies are integrated on one angular displacement potentiometer, the double control function can be achieved, and the angular displacement potentiometer has the advantages of being small in occupied space, high in integration degree and capable of reducing cost in a system needing multiple control functions.

The invention discloses a time-delay-free angular displacement error compensation system based on real-time self-calibration, which relates to the technical field of displacement error compensation and comprises a sensing module, a core processing module and a compensation output module. Dynamic error parameters are identified on line through a real-time iterative estimation algorithm, real-time feed-forward compensation is carried out through FPGA hardware, inherent calculation delay of traditional software compensation is effectively eliminated, the real-time performance of feedback signals is ensured, and then the intelligent arbitration unit dynamically evaluates the signal quality of the multiple sensors and generates fusion weights, so that the real-time performance of the feedback signals is improved. The reliability of the system can be automatically adjusted when a single sensor has short-time abnormity or performance degradation, stable and reliable output is maintained, and the robustness and the fault-tolerant capability of the system are remarkably improved; in addition, the micro excitation device can trigger in-situ self-calibration and update a sensor dynamic model when the system is idle, so that long-term drift is inhibited, and the stability of precision in the whole life cycle is guaranteed.

The application discloses a precise angular displacement measurement method of vortex light and plane wave interference, and an optical interference system is built based on a Mach-Zehnder interference structure. When the relative positions of a to-be-measured plane mirror and a reference plane mirror are no longer parallel, off-axis interference occurs when two light beams reflected by the to-be-measured plane mirror and the reference plane mirror meet again, and a strip interference pattern with a bifurcation structure in the middle and equidistantly distributed around the area is generated. When the to-be-measured plane mirror produces a slight angular displacement, the optical path difference between the two reflected light beams changes, and the interference pattern also changes correspondingly. The interference pattern contains relevant information such as the size and direction of the tilt angle change of the to-be-measured plane mirror. A CCD camera is used to collect the interference patterns of the plane mirror at different positions respectively, and through further image processing and calculation of the interference patterns, the fringe spacing and the tilt angle of the interference fringes can be obtained, and then the size and direction of the angular displacement change of the to-be-measured plane mirror can be obtained.

The invention relates to the technical field of sensors, in particular to an SSI interface non-contact angular displacement sensor which comprises a base, a bearing, a rotating shaft, a magnet disc, a magnet, a circuit module and an end cover. Wherein the circuit module is integrated with a general magnetic encoder chip, a microcontroller and an RS-422 transceiver, SSI protocol communication is realized through cooperation of an SPI, a DMA and a timer of the microcontroller and external interruption, on-demand configuration of a frame format is supported, a high-precision calibration method can also be combined, and the output angle precision can reach + / -0.05 degrees.

The invention provides a method for calculating and analyzing a corner static stiffness model of a cradle turntable, and relates to the technical field of precision machine tools. Firstly, the absolute linear displacement and the corner displacement of each key deformation position of a rotary table in the coordinate axis direction of a fixed coordinate system are assumed, and the absolute displacement difference of two parts in contact is the contact deformation of the parts; three-dimensional coordinate system transformation is adopted, force in a fixed coordinate system is transformed into a rotating coordinate system through a rotating matrix, and key parts such as a part combination surface and a rotating table bearing of the C shaft of the rotating table are analyzed under the rotating coordinate system; each roller of the bearing is sliced, and then a contact deformation model between the rollers and a raceway is established; the contact rigidity of the joint surface is calculated by adopting an MB parting principle aiming at analysis of the joint surface of the parts. Deformation among the workbench, the bearing, the swing frame, the mandrel, the bearing and the shell is comprehensively overlaid on the workbench surface, and the corner static rigidity of the cradle rotary table under the action of cutting force is constructed.

A device (30) for controlling fluid flow in a flexible tube (10) comprises two rotatable bobbins (22, 32), a motor (56), an encoder (64) and a processor (202). Each bobbin comprises a tube-engaging surface portion having a shape that changes around at least part of a circumference of the bobbin. The motor comprises a rotor (62) mechanically coupled to the bobbins such that operation of the motor causes rotation of the bobbins. The encoder is mechanically coupled to the rotor and configured to measure an angular displacement of the rotor. The processor determines (902) a target angular displacement of the rotor, receives (904) a measurement signal (64) indicative of the angular displacement of the rotor from the encoder, and outputs (906) a motor control signal (67) to set the angular displacement of the rotor as measured by the encoder to the target angular displacement.

The invention belongs to the technical field of vibration isolation platforms, and discloses an angular displacement measuring device, which comprises a laser (2) and a measuring instrument (3), and is characterized in that the laser (2) is fixed on the upper table top of a vibration isolation platform (1) to be measured and is coaxially arranged with the measuring instrument (3); the measuring instrument (3) comprises a measuring instrument shell (4), a positive lens (5), a negative lens (6), a CCD (Charge Coupled Device) measurer (7) and a calculator (8); one end of the measuring instrument shell (4) is provided with a light inlet, the rear part of the light inlet, the positive lens (5), the negative lens (6) and the CCD measuring device (7) are sequentially and coaxially arranged in the measuring instrument shell (4) from front to back, and the calculator (8) is arranged at a position, which is easy to observe, on the side wall of the measuring instrument shell (4), is connected with the internal CCD measuring device (7) through a cable, and is used for transmitting measured data. In a vibration environment, the influence of linear displacement on a measurement result can be eliminated, and the small angular displacement of the upper table surface of the vibration isolation platform in each direction can be continuously measured.

The present application relates to optical remote sensing satellite micro-vibration isolator dynamics parameter system level optimization method, belongs to spacecraft vibration control technical field;Establish the finite element model of the whole satellite;Modal analysis is carried out to the isolation system, and the function relation of the natural frequency of the isolation system and the axial stiffness k w , lateral stiffness k v Is fitted;The constraint condition of natural frequency f 横向 And f 纵向 Is set;The function relation of the angular displacement of high-resolution camera and the axial stiffness k w , lateral stiffness k v Of the isolator is fitted;The function relation of the angular displacement of the main components and the axial stiffness k w , lateral stiffness k v Of the isolator is fitted;The objective function F is constructed;With the constraint condition of lateral natural frequency f 横向 And longitudinal natural frequency f 纵向 As constraint, the objective function F is solved by nonlinear optimization using quasi-newton method, and the lateral natural frequency f 横向 , longitudinal natural frequency f 纵向 Of the optimized isolation system;The present application controls micro-vibration from the system level, and gives the specific parameter requirement of isolator design and development.

The application discloses a high-precision photoelectric angular displacement sensor optical system and an angular displacement sensor, which comprises equivalent flat glass, a first lens, a second lens and a third lens; the equivalent flat glass, the first lens, the second lens and the third lens are sequentially arranged along an axial direction; the front of the equivalent flat glass is directed to the outer wall of an optical encoder disc; an aperture stop is arranged on the front surface of the first lens, and the first lens is used for converging the light energy passing through the aperture stop and then making the light energy incident on the second lens; the second lens is used for correcting the spherical aberration generated by the first lens and the third lens; and the third lens is used for correcting optical distortion and simultaneously correcting the residual aberration such as the residual spherical aberration and the coma of the first lens and the second lens. The application provides an angular displacement sensor optical system, which has the characteristics of miniaturization and high reliability and can meet the measurement requirements of a high-precision angular displacement sensor working in a severe temperature environment.

The invention discloses a control method of a bending driving device based on inclined plane rotation, the driving device is formed by sequentially connecting a plurality of sections of rotating round pipes, in an initial state, the vertical end faces of the adjacent rotating round pipes are mutually attached, the inclined end faces of the adjacent rotating round pipes are mutually attached, and the central axes of all the rotating round pipes coincide; the inclined faces of all the rotating round pipes in the driving device are arranged in parallel in the initial state. In the working process, the motor is used for driving all the rotating round pipes to rotate around the axes of the rotating round pipes, the inclination angle sensor is used for reading the angles between the axes of all the round pipes, the angular displacement sensor is used for reading the rotating angles of the round pipes around the axes, the rotating angles of all the sections are accurately controlled to be coordinated and matched, and the movable part is bent relative to the fixed part through extrusion of the inclined faces; the bending angle of the movable part is controlled, and the tail end is kept in a plane formed by an upper bus and a lower bus of the rotating round pipe in an initial state in the deformation process. Through relative rotation and mutual cooperation of the multiple sections of round pipes, efficient, accurate and rapid bending operation control is achieved.

The application relates to the technical field of sensors, in particular to a non-contact angular displacement sensor with an SSI interface, which comprises a base, a bearing, a rotating shaft, a magnet disc, a magnet, a circuit module and an end cover; wherein the circuit module is integrated with a general magnetic encoder chip, a microcontroller and an RS-422 transceiver, the SSI protocol communication is realized through cooperation of SPI, DMA and timers of the microcontroller and external interrupts, the frame format can be configured as required, and the high-precision calibration method can be combined to realize that the output angle precision reaches plus or minus 0.05 degrees.