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68 results about "Radial line" patented technology

A radial line is a line passing through the center of a circle or sphere. The correct "direction" of the radial line is from the radius point to a point on the arc or circle. This applies to its use in surveying.

Method and system for automatically monitoring global deformation of reinforced concrete beam

The invention provides a reinforced concrete beam global deformation automatic monitoring method and system, and relates to the technical field of engineering structure intelligent monitoring, and the method comprises the steps: obtaining an original image of a reinforced concrete beam; inputting the original image into the image segmentation model, and outputting a binary mask image; determining a center point of a beam body according to a foreground region in the binary mask image; identifying the edge of the foreground region through an edge detection algorithm and a contour extraction algorithm, and extracting an outer contour point set of the beam body; redundant points in the beam body outer contour point set are removed, and a beam body candidate corner point set is obtained; determining a plurality of target beam body angular points in the beam body candidate angular point set through a heuristic optimization algorithm; dividing the binary mask image into a plurality of edge regions through a central radioactive ray division method; dividing each outer contour point in the outer contour point set of the beam body into a corresponding edge area; constructing a linear profile curve; and calculating the vertical global deformation of the reinforced concrete beam according to the linear profile curve.
Owner:UNIV OF SCI & TECH BEIJING

Multi-axial mechanical accelerometer and measuring method

The invention discloses a multi-axial mechanical accelerometer and a measuring method, and relates to the technical field of mechanical accelerometer equipment.The multi-axial mechanical accelerometer comprises a dome shell, a touch type alarm is installed in the dome shell, a transverse shaft is installed in the dome shell in the radial line direction of the dome shell, and the transverse shaft is sleeved with a conical sleeve; the conical sleeve is in sliding fit with the transverse rod, and the transverse shaft is sleeved with a first reset spring used for driving the conical sleeve to be close to the touch type alarm. The first base is installed at the bottom of the dome shell, a limiting assembly used for limiting the conical sleeve to move in the radial line direction is installed in the bottom of the first base, and the limiting assembly can move in the axis direction in the first base; when the multi-axial mechanical accelerometer works, acceleration signals in the axial direction and acceleration signals in the axial direction of other intersecting coordinate systems are responded, acceleration values in the axial direction of the multi-axial mechanical accelerometer are measured, an over-limit alarm state is indicated, and an alarm signal is output.
Owner:CHENGDU ZHONGKE ZHICHENG TECH CO LTD +1

Abrasive articles and systems

Abrasive articles include a circular center member having an outer edge, a radial line, and a radial plane, a plurality of bristles extending outward from the outer edge of the circular center member and having a projection on the radial plane of the center member, the bristles comprise a plurality of abrasive particles, at least a portion of the bristles orient with the projection at a slant angle relative to the corresponding radial line. The abrasive article can have a first direction of use and a second direction of use opposite to the first direction of use, and the abrading performance achieved by the first and the second directions of use is different from each other. Robotic abrading systems can include such abrasive articles for advantageous operations. Methods of making and using such abrasive articles are also disclosed.
Owner:3M INNOVATIVE PROPERTIES CO

Apertured article, insertion article and associated systems

An apertured article, insertion article and associated systems. The apertured article having an aperture, which has an aperture periphery, the aperture periphery having an aperture inner periphery and spaced aperture protrusions that extend radially outwardly from the aperture inner periphery to an aperture outer periphery. The aperture outer periphery is defined by distal edges of the spaced aperture protrusions. The aperture inner periphery is positioned along the circumference of an inner aperture reference circle, the inner aperture reference circle inscribing the aperture periphery, and the aperture outer periphery is positioned along the circumference of an outer aperture reference circle. As viewed along a radial line whose origin is at the center of the inner aperture reference circle, the aperture inner periphery can be positioned along 0.4 to 0.6 of the entire circumference of the inner aperture reference circle. The insertion article can be configured for insertion in the apertured article.
Owner:REV ROBOTICS LLC

Method and apparatus for making occlusion angle map and equal shooting velocity map, storage medium and product

The present invention discloses a method, device, storage medium and product for making a masking angle map and an equal-radiation velocity map, which relates to the field of radar monitoring. Generate a first radial line with the radar data as the center; then generate radial sampling points along the first radial line; obtain the altitude of each radial sampling point, and obtain the maximum masking angle on any one of the first radial lines; perform truncation processing on the maximum masking angle on any one of the first radial lines according to a preset maximum masking angle threshold and a preset minimum masking angle threshold, so that the truncated masking angle falls within a preset angle range; generate a second radial line, and draw N equally spaced concentric circles at intervals of a preset angle, and draw the first position data where the truncated masking angle is located; obtain the masking angle map; obtain the maximum detection distance; obtain the truncated maximum detection distance; generate a third radial line, draw M equally spaced concentric circles, and obtain the second position data; obtain the equal-radiation velocity map. The present invention improves the accuracy of the radar masking angle map and the equal-radiation velocity map and the radar site selection efficiency.
Owner:FUJIAN SATELLITE DATA DEV CO LTD

Ultrasound analysis method and device

The invention provides an ultrasound data processing method (30) for detecting presence of an intravascular object in a vessel lumen based on analysis of acquired intravascular ultrasound data of the lumen. The method comprises receiving (32) data comprising multiple frames, and each frame containing data for a plurality of radial lines, corresponding to different circumferential positions around the IVUS device body, and reducing (34) the data to a single representative value for each radial line in each frame. These representative values are subsequently processed to derive (36) values for at least each frame representative of a probability of presence of an object within the given frame. Based on the probability values, a region within the data occupied by an intravascular object, for instance a consecutive set of frames occupied by an object, is determined (38).
Owner:KONINKLIJKE PHILIPS NV

Cable grid bridge system

The utility model discloses a cable grid bridge system comprising a turning bridge which is composed of a plurality of bridge units arranged in a divergent manner to form an inner arc structure and an outer arc structure. Each bridge unit comprises two parallel U-shaped wefts and a plurality of radial line units, each U-shaped weft is composed of an outer vertical beam, a bottom beam and an inner vertical beam, and each radial line unit comprises a bottom radial line unit, an outer diameter line unit and an inner diameter line unit which are respectively connected to different parts of the corresponding U-shaped weft; the outer diameter line units are connected to form a continuous bridge outer diameter line; the inner vertical beams of the adjacent bridge units abut against each other, the inner diameter line unit is provided with two ends, reinforcing ribs are welded between the bottom beams, a bridge bottom diameter line is formed, and therefore the turning bridge system is low in cost and convenient to manufacture.
Owner:VICHNET COMM SCI & TECH

Railway wheel

The present invention provides a railway wheel in which the hub portion has excellent toughness. The railway wheel of the present disclosure includes a rim portion, a hub portion having a through-hole, and a plate portion. The chemical composition of the railway wheel is: C: 0.60 to 0.80%, Si: 1.00% or less, Mn: 0.10 to 1.50%, P: 0.050% or less, S: 0.030% or less, N: 0.0200% or less, and the remainder consisting of Fe and impurities. In a cross section of the hub portion after the hub portion is cut with a plane containing the central axis in the direction of the central axis of the through-hole, in a 15 mm x 15 mm region defined as a rectangular region by a plurality of axial line segments arranged at 15 mm intervals in the radial direction of the railway wheel from the inner peripheral surface of the through-hole in parallel with the central axis and a plurality of radial line segments arranged at 15 mm intervals in the direction of the central axis from the surface of the hub portion on which the opening of the through-hole is formed perpendicularly to the central axis, the average C concentration of each rectangular region in the cross section of the hub portion is less than 0.90 mass%.
Owner:NIPPON STEEL CORPORATION

Lesion marking method, electronic device and storage medium

The present application relates to a lesion marking method, electronic device and storage medium, which obtains the lesion position of a tubular organ or tissue in a medical image; sets a marking graphic on at least one side of the tubular organ or tissue in the medical image, wherein the position of the marking graphic and the lesion position are located on the same radial line, and the radial distance between the marking graphic and the ipsilateral projection boundary of the tubular organ or tissue is not greater than a preset distance, thereby solving the problem in the related art that the marking graphic cannot accurately locate the lesion position, and realizing accurate positioning of the lesion position.
Owner:SHANGHAI UNITED IMAGING HEALTHCARE

PE pipe electric fusion welding grid line drawing device

The utility model relates to a PE pipe electric fusion welding grid line drawing device which comprises two symmetrically-arranged fixing mechanisms and line drawing mechanisms located on the two fixing mechanisms, and the two fixing mechanisms are connected through at least two fixing rods. The line drawing mechanism comprises a radial line drawing assembly and an axial line drawing assembly, and the radial line drawing assembly and the axial line drawing assembly are both slidably connected with the fixing rod through the mounting base. The two symmetrically-arranged fixing mechanisms are used for fixing the two ends of the connector of the PE pipe correspondingly, then under the effect of sliding connection with the fixing rod, axial line drawing is achieved through the axial line drawing assembly, radial line drawing is achieved through the radial line drawing assembly, grid lines are formed, the lines are standard when the grid lines are drawn, and the drawing efficiency is high.
Owner:FOSHAN CHANCHENG ENERGY CO LTD

Image processing device, image processing method, and image processing program for facilitating image diagnosis using mammography apparatus to generate composite two-dimensional tomographic image using selected tomographic image slices corresponding to detected spicula regions

An image processing device detects a spicula candidate region having a radial line structure from each of a plurality of tomographic images indicating a plurality of tomographic planes of an object, selects, as a tomographic image group, a plurality of the tomographic images corresponding to a plurality of the spicula candidate regions indicating the same radial line structure among a plurality of the detected spicula candidate regions, and generates a composite two-dimensional image using the selected tomographic image group.
Owner:FUJIFILM CORP

Chip non-destructive testing system based on embedded current scanning

This invention relates to the field of chip inspection technology, and more particularly to a chip non-destructive testing system based on embedded current scanning. The system includes a current scanning module, an information acquisition module, a data analysis module, an abnormal scanning region generation module, and a scanning path generation module. Instead of simply performing a higher-density secondary scan of the entire chip, this invention intelligently filters out abnormal scanning regions requiring special attention based on the initial scan results and calculates their scanning priority. This allows valuable inspection time and computing resources to be concentrated on the most suspicious and severe areas, avoiding unnecessary repeated scanning in normal areas. The system dynamically selects the optimal scanning path based on the regularity of the region shape; for example, parallel lines are used for regular regions, and radial lines are used for irregular regions. This makes the scanning path more closely match the geometric features of the defect, obtaining a more complete region characterization with fewer scanning points, resulting in higher path planning efficiency.
Owner:TIANJIN RONGYING ELECTRONIC TECH CO LTD

Drug delivery device

The name of the product incorporating the design is a "Drug Delivery Device." The product incorporating the design is for use as a drug delivery device. The essential feature of the design is the shape of the product incorporating the design. The dashed lines in the figures illustrate portions of the drug delivery device that are not part of the design sought to be registered. The thin parallel and radial lines in the figures represent contours and surfaces only and do not illustrate surface ornamentation of the product. The diagonal shading in the figures indicates transparent or translucent surfaces. Further, with respect to Design 3, dashed lines formed by unevenly spaced dashes (i.e., dash-dot lines) indicate the boundary between the sought and unsought portions of the design. 3.1) Perspective View; 3.2) Front View; 3.3) Rear View; 3.4) Right Side View; 3.5) Left Side View; 3.6) Top View; 3.7) Bottom View
Owner:REGENERON PHARMACEUTICALS INC

Method and device for determining at least one refractive value of eye

The invention relates to a method (218), a computer program and a device (110) for determining at least one refractive value (216) of an eye (112) of a person (114), and to an associated method (210) for producing at least one ophthalmic lens (212) for an eye (112) of a person (114). The method (218) comprises the steps of: a) (220) displaying a visual stimulus (120) to an eye (112) of a person (114), where the visual stimulus (120) comprises a plurality of concentric radial lines (126, 126 ',...), where each radial line (126, 126',...) has a different angle value (128, 128 ',...) with respect to a center (130) of the visual stimulus (120); b) (224) recording a response of the person (114) to the visual stimulus (120); and c) (226) determining at least one refractive value (216) of the eye (112) of the person (114) by evaluating the response of the person (114) to the visual stimulus (120), where step a) (220) comprises: each radial line (126, 126 ',...) being projected to the eye (112) of the person (114) at a particular out-of-focus plane, thereby providing a particular diopter to the eye (112) of the person (114), and where the refractive value (216) of the eye (112) of the person (114) is determined by evaluating the response of the person (114) to the visual stimulus (120). Step b) (224) includes recording a response of the person (114) to the visual stimulus (120) indicative of a particular radial line (144) at a particular angle value (146) appearing with a maximum definition (148) to the eye (112) of the person (114).
Owner:CARL ZEISS VISION INTERNATIONAL GMBH

Vacuum cleaner

This product is a vacuum cleaner with a built-in mop. This product is used for cleaning floors. The distinctive feature of this design lies in the shape of this product. Figure 2.7 best illustrates the distinctive feature of this design. The parts indicated by dashed lines in the figure are not parts of the design for which registration is sought. The parallel and radial lines in the figure merely represent the outline and do not illustrate the decoration on the surface of this product. In Figure 2.1, the diagonal shaded lines of the elliptical part of the handle represent the transparent material, and the rectangular part inside the elliptical part represents the display. 2.1) Front view; 2.2) Rear view; 2.3) Top view; 2.4) Bottom view; 2.5) Right side view; 2.6) Left side view; 2.7) Perspective view; 2.8) Perspective view; 2.9) Enlarged view; 2.10) Reference drawing
Owner:MINDOO TECHNOLOGY CO LTD

Radius excavation arch end structure and excavation method for connecting arch dam with bedrock

The present invention relates to a radial excavation arch end structure connecting an arch dam with bedrock and an excavation method thereof; the structure comprises an arch dam and arch seats arranged at two arch ends of the arch dam; a central contact point formed by the intersection of the arch dam center line of the arch dam and the arch seats at both ends; an upstream contact point formed by the intersection of the upstream side of the arch dam and the arch seats at both ends, and a contact surface formed between the arch dam and the arch seat between the central contact point and the upstream contact point is a first arc surface; the first arc surface is tangent to the radial line of the arch dam center line; the contact surface of the arch seat on the downstream side of the arch dam is extended downward, and the end point of the extension is connected to the thickened starting point of the downstream side of the arch dam to form a second arc surface; the second arc surface intersects with the radial line of the arch dam center line. The arch end upstream of the arch ring center line of the present invention adopts an arc shape, which is not only conducive to the force transmission of the arch end, but also forms a radial excavation, which is conducive to reducing the amount of rock excavation on the upstream face of the dam body.
Owner:YELLOW RIVER ENG CONSULTING CO LTD

Illuminating lamp

The utility model discloses a lighting lamp, and belongs to the technical field of lighting product design. The illuminating lamp comprises a face ring, a lamp body and a connecting frame, the face ring is arranged on the connecting frame in a sleeving mode, the face ring and the connecting frame are in limiting fit in the axial direction of the face ring, and the connecting frame can rotate around the axis of the face ring relative to the face ring; the lamp body comprises a light-emitting part and a protective shell, the light-emitting part is arranged in the protective shell, the protective shell is movably connected with the connecting frame, and the protective shell can rotate around the radial line of the face ring relative to the connecting frame. According to the scheme, the problems that in the prior art, the number of parts of an illumination lamp is large, and the production cost is high can be solved.
Owner:OPPLE LIGHTING CO LTD

Net rack reconstruction method for transforming single radiation line into 2-1 single ring network

The invention relates to a net rack reconstruction method for transforming a single-radiation line into a 2-1 single-ring network, and the method comprises the steps: recognizing at least two feeder lines in a single-radiation operation state in a power grid, obtaining the electrical parameters, load rates and wiring modes of the feeder lines, selecting the two single-radiation feeder lines with the load rate difference meeting a preset condition as a target transformation line, and carrying out the reconstruction of the two single-radiation feeder lines. A cable line is newly built from an intermediate node of a first target feeder line to be connected to an intermediate node of a second target feeder line, automatic section switches are additionally arranged on the two target feeder lines respectively to form a main section, and the two original single-radiation feeder lines are connected to form a 2-1 single-ring network structure through the newly built cable line and the additionally arranged automatic section switches. And an optical fiber communication network and a distribution automation terminal are configured to realize fault positioning, isolation and non-fault section power supply recovery functions.
Owner:JIANGMEN DAGUANGMING POWER DESIGN CO LTD

Writing teaching system based on Chinese character circular structure model and target grid calligraphy practicing method thereof

The invention discloses a target grid calligraphy practicing method based on a Chinese character circular structure model. The method comprises the following steps: a) extracting a Chinese character structure circle; b) constructing a target lattice; c) mapping strokes; the invention relates to the technical field of calligraphy teaching, by introducing a Chinese character circular structure model, the system breaks through the neglect of a traditional rectangular grid system on geometrical characteristics of Chinese characters, and by means of target grids constructed by golden proportion concentric circles and equally-divided radial lines, curvature, retraction and density changes of the Chinese characters can be quantified more accurately, so that the accuracy of calligraphy teaching is improved. The scientificity and aesthetic feeling of the writing composition are improved; an RANSAC circle fitting algorithm and an error quantification feedback mechanism are adopted, quantifiable deviation indexes are provided for teachers and students, subjective evaluation in the teaching process is reduced, and teaching efficiency and evaluation objectivity are improved; moreover, through a standardized target lattice template and an image registration technology, the problem that different teaching materials and teachers are inconsistent in definition of'gravity center 'and'middle palace' is solved.
Owner:NANJING PANQI MACHINERY EQUIPMENT CO LTD

Drug delivery device

The name of the product incorporating the design is a "Drug Delivery Device." The product incorporating the design is for use as a drug delivery device. The essential feature of the design is the shape of the product incorporating the design. The dashed lines in the figures illustrate portions of the drug delivery device that do not form part of the design sought to be registered. The thin parallel and radial lines in the figures represent contours and surfaces only and do not illustrate surface ornamentation of the product. The diagonal shading in the figures indicates transparent or translucent surfaces. 6.1) Perspective View; 6.2) Front View; 6.3) Rear View; 6.4) Right Side View; 6.5) Left Side View; 6.6) Top View; 6.7) Bottom View
Owner:REGENERON PHARMACEUTICALS INC

A method for preparing a ferroelectric liquid crystal material grating based on femtosecond laser direct writing at room temperature and application thereof

The application belongs to the technical field of optics, and particularly relates to a preparation method and application of a ferroelectric liquid crystal material grating based on femtosecond laser direct writing. The first substrate and the second substrate are cleaned by ultrasonic cleaning, and then are dried and cleaned by ozone. After the cleaning, the edges of the first substrate and the second substrate are smeared with spacers, and the two substrates are bonded and solidified to form a liquid crystal cell. The ferroelectric liquid crystal material is filled into the liquid crystal cell to form a liquid crystal layer. The pattern of the liquid crystal layer is directly written by a femtosecond laser direct writing device, so that the orientation direction of the liquid crystal layer molecules is controlled, and the ferroelectric liquid crystal material grating is obtained. The pattern of the liquid crystal layer directly written by the femtosecond laser direct writing device includes any one of a strip pattern, a radial line pattern and a circular ring pattern. The application realizes the control of the orientation direction of polar liquid crystal molecules at room temperature by femtosecond laser direct writing technology, and successfully realizes nonlinear optical response.
Owner:NANJING UNIV

An anti-splash system auxiliary measuring device

The present invention belongs to the technical field of vehicle detection auxiliary equipment, and particularly relates to an anti-splash system auxiliary measuring device; it includes a clamping part, an auxiliary rod and a rotating part; the rotating part is arranged on the back side of the clamping part, the rotating plane of the rotating part is parallel to the plane where the clamping part is located, a fixing hole is arranged on the rotating part, and the axis of the fixing hole is parallel to the rotating plane of the rotating part; the auxiliary rod includes a fixed rod and a bent rod, the fixed rod is inserted into the fixing hole, and the bent rod is hinged to the end of the fixed rod. This anti-splash system auxiliary measuring device can establish a wheel center line, a radial line passing through the wheel center and a horizontal line passing through the wheel center on the vehicle wheel as reference lines through the cooperation of the clamping part and the auxiliary rod, so that the measurement of the relevant parameters of the anti-splash system is simpler, more convenient, and effectively improves the accuracy and measurement efficiency of the data.
Owner:CHONGQING VEHICLE TEST & RES INST CO LTD

Spinal cord beating device

The spinal cord beating device comprises an adjusting mechanism used for adjusting the beating position and a beating mechanism, the beating mechanism comprises a pull-up part, a beating part and a searchlighting structure, the beating part and the searchlighting structure are located on the same radial line, and a rotating shell is arranged on the outer side of the beating part and the outer side of the searchlighting structure; a transmission structure is arranged between the pull-up part and the rotating shell, in the initial state, the knocking part is located on the lower portion, the searchlighting structure is located on the upper portion, and when the pull-up part is pulled up, the rotating shell rotates by at most 180 degrees through the transmission structure; the rotary shell can automatically rotate and reverse in the normal process of pulling up the knocking mechanism, so that the searchlighting structure faces downwards in the pulling-up process and illuminates and displays the final falling point of the knocking mechanism, an operator can accurately obtain the actual knocking position, and the position accuracy in the actual knocking process is guaranteed.
Owner:WENZHOU MEDICAL UNIV CIXI INST OF BIOMEDICINE

Vehicle wheel insulator

Insulator (20) configured to be located on a wheel hub (12) between a brake rotor (14) and a wheel rim (10), comprising: a disc-shaped annular device with an inner ring (22), an outer ring (24), a first surface section (26), a second surface section (28), a plurality of openings, a plurality of drain surface sections (40) and a plurality of radially oriented drain channels (30) arranged on the first surface section; wherein each of the drainage channels (30) is arranged between adjacent openings; wherein each of the drainage channels (30) is recessed in the first surface section (26), runs between the inner ring (22) and the outer ring (24) and defines a first radial line; wherein each of the drainage surface sections (40) is recessed in the first surface section (26) and is fluidically coupled to one of the drainage channels (30) to form a coupled drainage channel (30); wherein a first of the drainage surface sections (40) is arranged on a first side of one of the drainage channels (30) and is fluidically coupled to it, and wherein a second of the drainage surface sections (40') is arranged on a second side of one of the drainage channels (30) and is fluidically coupled to it, wherein the first side is opposite the second side of one of the drainage channels (30); wherein a second radial line is defined by a radial line that intersects a center line of an adjacent opening (29); wherein a first point (42) is defined on a surface of the first surface section (26) and is located on the second radial line proximal to the inner ring (22); wherein a second point (44) is defined on the surface of the first surface section (26) and is located proximal to one of the drainage channels (30); wherein a curve is formed between the first and second points; and wherein each of the drainage surface sections (40) includes a continuous surface which is recessed by the first surface section (26) between the drainage curve, the drainage channel (30) and an arc defined on the inner ring (22) between the first point and the drainage channel, wherein each point of the run-off curve runs radially above the second point (44) when the second radial line is arranged in a vertical orientation, wherein the openings (29) comprise tab bolt receiving holes, wherein the openings (29) are arranged symmetrically around a circumference at a common radial length. wherein each of the drainage channels comprises a semi-cylindrical surface which is recessed in the first surface section, wherein the second point (44) is located proximal to the drainage channel at a radial distance midway between the inner ring (22) and the outer ring (24), wherein the second point (44) is arranged proximal to a first side of the drain channel, wherein the inner ring forms a further opening for the wheel hub (12), wherein the first surface section (26) is arranged towards the brake rotor and the second surface section towards the wheel rim (10).
Owner:GM GLOBAL TECHNOLOGY OPERATIONS LLC

Display device

This display device, which displays information pertaining to a parameter that is related to a vehicle state in a display region (10) having a background color of a first color, comprises: a scale section (11) in which a scale (21) serving as an indicator of the parameter is displayed on a circle (D) that is centered on the center point (C) of the display region and that passes through an origin point (A); and a fan-shaped section (12) in which is displayed a fan-shaped image (23) surrounded by a first radial line (31) that connects the origin point (A) and the center point (C), a second radial line (32) that connects a current point (B) and the center point (C), and an arc (33) that extends from the origin point (A) to the current point (B). In the fan-shaped image (23), the first radial line (31) is displayed with the first color, the current point (B) is displayed with a second color, and a gradation is applied such that the color difference with respect to the second color decreases from the origin point (A) toward the current point (B) and from the center point (C) toward the radially outer side of the circle (D).
Owner:MITSUBISHI MOTORS CORP

Permanent magnet synchronous motor

A permanent magnet includes a recessed portion to fit therein with a protrusion provide in a rotor core; and, when the shortest distance between outmost part of the recessed portion and an outer periphery's circular arc portion of the magnet is defined as L1, and when the distance between the recessed portion and the outer periphery's circular arc portion is defined as L2 where the distance L2 passes through an intersection point at which a tangential line of outmost part on the recessed portion intersects with a parallel line, which defines as its start point a point from which a changeover to the recessed portion occurs from an adhesion surface between the magnet and the rotor core, and which is in parallel with a radial line extending from the rotor's shaft center toward the center of the magnet, the magnet includes the recessed portion that satisfies L2≥L1.
Owner:MITSUBISHI ELECTRIC CORP

Three-dimensional curve reconstruction method and towed formation detection system based on shape perception

The invention provides a three-dimensional curve reconstruction method and a towed formation detection system based on shape perception, and the method comprises the steps: a plurality of sensing units are circumferentially arranged around the central axis of a to-be-detected object, each sensing unit is bent along with the bending of the to-be-detected object, and for each sensing unit, the shape of the to-be-detected object is calculated; the included angles between the radial lines corresponding to the sensing units on each cross section and the X axis are the same; for each sensing unit on the cross section of the to-be-measured object, determining the distance from the sensing unit to the bending neutral surface according to the included angle between the corresponding radial line of the sensing unit and the X axis and the included angle between the bending direction of the cross section and the X axis; determining a total curvature vector of the object to be detected according to the strain detected by each sensing unit and the determined distance; according to the total curvature vector, the torsion rate of the object to be measured and the curvature in the bending tangent direction are determined; determining a unit tangent vector of the to-be-measured object in the bending tangent direction according to the torsion rate and the curvature; and carrying out integration on the unit tangent vector, and reconstructing a three-dimensional curve of the object to be measured. The three-dimensional reconstruction method is simple, efficient and high in accuracy.
Owner:CHONGQING UNIV