79 results about "Angular shift" patented technology

The invention relates to the technical field of camera anti-shake, and discloses a motion camera anti-shake method and system based on inertial prediction, and the method comprises the steps: collecting the three-axis acceleration original data of an IMU sensor in a motion camera, and calculating a first motion intensity value; when the first motion intensity value is smaller than an acceleration change rate threshold value, starting a first anti-shake mode, and extracting angular velocity data of the gyroscope; performing cubic spline interpolation curve fitting and time domain extrapolation prediction on the angular velocity data of the gyroscope to obtain a three-axis angular displacement predicted value and generate a first lens compensation driving signal in a first anti-shake mode; continuously monitoring the motion camera, switching to a second anti-shake mode when a second motion intensity value exceeds the acceleration change rate threshold value, acquiring three-axis acceleration sudden change data, and generating a second lens compensation driving signal in the second anti-shake mode, compared with a traditional single-mode anti-shake method, the method improves the adaptability and compensation precision in a complex motion environment.

The present invention relates to a protective foldable cage (100) adapted to flying drones. It comprises several ribs linked at their extremities by a ring and comprising on their length several connection points allowing strings to join each of the adjacent ribs. The length of the string corresponds to the maximal angular shift between the first and the last ribs. The protective cage further comprises easily removable locking means adapted to maintain the ribs at predetermined relative angular position once deployed. The present invention further relates to a system comprising such a protective cage and a drone support, as well as a method of protection of flying drones.

Disclosed embodiments include a multi-mode sensor including an elastomeric strand having a first multi-mode sensing region configured to sense at least two different physical parameters, and a second multi-mode sensing region, space apart from the first multi-mode sensing region, and configured to sense at least two different physical parameters. In some disclosed embodiments the first multi-mode sensing region is configured to measure the physical parameters of angular displacement and strain.

The invention relates to an error self-compensation method, device and equipment for rotary filtering and a medium, and belongs to the field of optical instruments. The method comprises the steps that rotary filtering is carried out by regulating and controlling angular displacement of a monochromator, a single-dispersion light beam is obtained, and the single-dispersion light beam covers a single-dispersion wavelength light beam and a multi-dispersion wavelength light beam; the detection wavelength of the single-dispersion light beam is captured, an error self-compensation model is constructed through disturbance wavelengths to carry out error self-compensation, and the disturbance wavelengths cover the thermodynamic disturbance wavelength, the illumination disturbance wavelength, the current disturbance wavelength, the power disturbance wavelength and the mechanical vibration disturbance wavelength. According to the invention, monochromatic light with different wavelengths can be simply, conveniently and efficiently acquired, discontinuous monochromatic light with multiple wavelengths can be acquired, error self-calibration is realized according to multiple factors, and monochromatic light acquisition is more accurate.

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 present invention provides a method and system for calibrating a circular grating encoder based on a ring laser gyroscope. The method specifically includes the following steps: S1: Obtain the angular increment measurement value RNi of the ring laser gyroscope and the angular displacement measurement value OMi of the circular grating encoder synchronously measured under the trigger of a synchronization signal, where i = 0, 1, …, N; S2: Taking the angular displacement measurement value OMi of the circular grating encoder as the zero point, calculate the angular displacement value RMj of the ring laser gyroscope, where j = 1, …, n; S3: Calculate the error based on the angular displacement measurement value OMi of the circular grating encoder and the angular displacement value RMj of the ring laser gyroscope, and establish a measurement model of the circular grating encoder according to the error calculation result.

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 invention discloses an optical fiber type angular displacement measuring device and method based on orbital angular momentum light beam interference, and relates to the field of angular displacement measurement. When the device works, a laser emitting assembly emits two beams of light, and the two beams of light are transmitted to a spiral long-period fiber grating and a micro-nano polarization maintaining optical fiber respectively; the spiral long-period fiber grating converts the received light from a fundamental mode into a first-order orbital angular momentum mode, and then the light is transmitted to the beam combiner through the first lens; the micro-nano polarization-maintaining optical fiber rotates along with the rotary displacement table to generate angular displacement, outputs the light after phase change to the reflector through the second lens, reflects the light to the convex lens, changes the light into spherical waves through the convex lens, and transmits the spherical waves to the beam combiner; interference is formed between the spherical wave received by the beam combiner and the light in the first-order orbital angular momentum mode, and a corresponding spiral interference image is obtained through detection of the detector and used for calculating the angular displacement amount. According to the invention, high-precision and large-range precise angular displacement measurement can be realized at the same time.

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.

1. The name of the product of this design: stepper motor. 2. Purpose of this design product: used to control the angular displacement and rotation angle of CNC machine tools. 3. The design key point of this appearance design product lies in the shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture.

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.

The invention discloses a trimming method of a resistor body for an absolute position high-precision angular displacement potentiometer, and belongs to the technical field of production of angular displacement potentiometers based on conductive plastic resistor bodies. The position close to the C end is the position B, and the area between the A and the B is the effective working tape area. The trimming method comprises the following steps: carrying out linear trimming on the area between the A and the B on the working tape; and trimming an area between the B and the C on the working tape, specifically, calculating an actual resistance value between the B position and the A end, calculating a theoretical total resistance value, testing an actual resistance value between the A end and the C end, and carrying out nonlinear trimming on the area between the B and the C based on a difference value between the actual resistance value and the theoretical total resistance value. According to the invention, the effective working tape area and the invalid working tape area are trimmed respectively, so that the absolute position control linearity precision of the resistor body is greatly improved.

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 workpiece clamping device and method for ultrafast laser welding, and the method comprises an objective table which is used for bearing and fixing two workpieces to be welded; the cover plate glass and the objective table are jointly used for clamping two workpieces to be welded; the X-axis angular displacement table and the Y-axis angular displacement table are embedded with the objective table and are used for adjusting the posture of the objective table through angular displacement adjustment, so that the force application direction of the objective table on the two workpieces to be welded is adjusted, and the optical contact area in the contact surfaces of the two workpieces to be welded is maximized; and the Z-axis lifting device is used for lifting the objective table and applying extrusion force to the two clamped workpieces to be welded. The application direction of clamping force can be changed by adjusting the X-axis angular displacement table and the Y-axis angular displacement table, so that the optical contact area between two workpieces to be welded is maximized.

In an embodiment, a method includes: placing a wafer on an implanter platen, the wafer including integrated circuit dies; measuring a position of the wafer by measuring a positions of an outer edge of the integrated circuit dies with a camera; 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.

The invention belongs to the technical field of optical detection, and discloses a pneumatic endoscopic rotating device with a coding function and a method. The rotating part is used for driving an optical element at the front end of the endoscopic probe to rotate; in the angular displacement detection part, a periodic coding structure is arranged around the inner wall of a glass inner tube of the endoscopic probe by a circle; the coding structure has distinguishable optical characteristics at different angle positions; the light source is used for emitting detection light to the coding structure and receiving reflected light, and decoding the coding structure through interference or other optical modes so as to obtain rotation angle information; and the correction part is used for correcting the rotation imaging data based on the rotation angle information so as to obtain an imaging result of uniform-speed scanning. The spectral domain white light interference technology is adopted to synchronously scan the coding structure, the problems that uniform-speed scanning imaging and rotation angle determining cannot be achieved are solved through coding signals, and dual guarantee of positioning precision and imaging quality is achieved.

The present invention discloses an automated part size detection device and method, relating to the field of optical detection technology, wherein the device comprises: a linear slide, provided with a slider, the slider being fixed with a first electric angular displacement platform for reciprocating along a first direction, the first electric angular displacement platform being fixed with a second electric angular displacement platform for deflecting around a first direction within a first angular range, the second electric angular displacement platform being fixed with a rotary table for deflecting around a second direction within a second angular range, the rotary table being used to fix the part to be detected and rotate around a third direction, the first direction, the second direction, and the third direction being perpendicular to each other; a laser sensor being adjustable and fixed above the part to be detected, for collecting three-dimensional point cloud data of the part to be detected; and a host computer being electrically connected to control the above structures, obtaining and giving detection results and controlling a sorting robot to sort the part to be detected. The present invention can improve the accuracy of automated part detection and meet the needs of the industrial chain for efficient and intelligent industrial production.

In an embodiment, a method includes: placing a wafer on an implanter platen, the wafer including integrated circuit dies; measuring a position of the wafer by measuring a position of an outer edge of the integrated circuit dies with a camera; 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.

The invention discloses a bird monitoring holder control method and system, and the method comprises the steps: building a detection system coordinate system comprising a holder body, a pitching frame and an azimuth frame, determining the conversion relation of all coordinate systems, obtaining the angular velocity and angular acceleration of the azimuth frame of the holder, and driving the holder. The system utilizes a gyroscope and an angular displacement sensor to construct a four-loop three-closed-loop control architecture, namely a current loop, a gyroscope stabilizing loop and a target tracking and attitude locking control loop. A tracking mode, a locking mode or an angular rate stabilizing mode can be switched according to instructions, and all loops work cooperatively in different modes, for example, a current loop stabilizes current, and a gyro stabilizing ring inhibits interference. The bird target can be locked through the image processing system, the miss distance is calculated and fed back for control, and accurate tracking is achieved. The problems that a traditional bird monitoring holder is low in control precision, poor in interference resistance and insufficient in driving and servo control are solved, and the high-precision and real-time tracking and monitoring requirements for birds in the complex environment are met.

A timepiece movement (2) is provided with an indicator (4) and comprises a mechanism (6) for driving such an indicator jump, comprising a wheel platform (8), a rigid portion (10) defining a driving finger (12), and a spring (16), the first end of which is attached to the wheel platform for rotation therewith and the second end of which is attached to the rigid portion for rotation therewith. The mechanism is arranged such that the spring contracts when this spring is loaded so as to be able to generate a time hopping of the indicator. When the spring contracts, the angular displacement of the drive fingers relative to the wheel platform is limited by an angular stop (28) which is attached to the wheel platform for rotation therewith. Preferably, the indicator and the mechanism are arranged such that, in normal operation, a time-hopping of the indicator cannot occur before the angular displacement has been stopped by the angular stop after a spring loading of the angular displacement prior to this time-hopping has ended and thus corresponds to the determined angular distance (alpha).

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.

The invention provides a method for detecting a deflection angle of a horizontal plane, which comprises the following steps of: firstly, fixing an angular displacement sensor on a to-be-detected plane provided with a rotating shaft, and enabling the angular displacement sensor to be parallel to the to-be-detected plane; meanwhile, when the angular displacement sensor is fixed, directions pointed by three axes of the angular displacement sensor are set, the x axis of the angular displacement sensor is parallel to the rotating shaft, the y axis of the angular displacement sensor is parallel to the rotating shaft and points to one side where the rotating shaft is located, and the z axis of the angular displacement sensor points to the direction of gravitational acceleration. Then, the angular displacement sensor is initialized, the to-be-measured plane is rotated by a preset angle through the rotating shaft, and the angular displacement sensor obtains a first gravitational acceleration component of the y axis and a second gravitational acceleration component of the z axis; and finally, obtaining an initial deflection angle according to the first gravitational acceleration component and the second gravitational acceleration component, and correcting the initial deflection angle by using the data processing host to obtain a final deflection angle.

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.