Abstract: A tangential motor, a tangential motor rotor and a rotor iron core thereof. The rotor iron core includes a rotor body (1) and permanent magnet slots (2) provided on the rotor body (1), a rotor magnetic pole between two adjacent permanent magnet slots (2) being provided with a fixing hole (11) for fixing a rotor punched segment and a flux isolating hole (12); the flux isolating hole (12) is located at an outer side of the fixing hole (11) in a radial direction of the rotor body (1), a width of the flux isolating hole (12) smoothly increases in a direction from the outer side of the rotor body (1) to a center of a circle thereof. The rotor iron core reduces vibration noise of the motor, and improves efficiency of the motor.

Abstract: The present invention discloses a motor rotor and a permanent magnet motor. The motor rotor includes a rotor core and a plurality of magnetic poles provided in the rotor core, wherein each magnetic pole includes a first permanent magnet, a second permanent magnet and a third permanent magnet; the first permanent magnet being arranged on a central position of the magnetic pole on which said first permanent magnet is located, the second permanent magnet being arranged at two sides of the first permanent magnet, the third permanent magnet being arranged at one side of the second permanent magnet far away from the first permanent magnet; the coercivity of the first permanent magnet is smaller than that of the second permanent magnet and that of the third permanent magnet; and the third permanent magnet is arranged on a q axis of the motor.

Abstract: Provided are a proposals processing method and related products for object detection, where the method comprising: determining a score threshold according to a statistics property of scores of a first quantity of proposal; selecting a second quantity of proposals with a score higher than the score threshold from the first quantity of proposals; and suppressing to the second quantity of proposals to get a third quantity of non-overlapping proposals with high scores, as such, time complexity for selecting a second quantity of proposals is reduced, and efficiency for selection of the proposals to be used for suppression is improved, thereby improving proposal processing efficiency and object detection efficiency.

Abstract: A rotor structure includes a rotor core and magnetic steel sheets. A shaft hole fixedly connected to a rotary shaft and an even number of magnetic steel grooves are formed on the rotor core along a rotation axis thereof. The magnetic steel grooves are symmetrically distributed around a periphery of the shaft hole in the rotor core, and the magnetic steel sheets are correspondingly installed in the magnetic steel grooves on a one-to-one basis. First through grooves extending axially and depressed radially are symmetrically distributed and formed around an inner surface of the shaft hole of the rotor core. First circulation holes are enclosed between the first through grooves and an outer surface of the rotary shaft. A motor includes a stator and the rotor structure arranged in an inner hole of the stator. A compressor includes the motor.

Abstract: A permanent magnet motor, comprising a stator (1) and a rotor (4); the rotor comprises a rotor iron core (5) and permanent magnets (7a, 7b); in the radial direction of the rotor, each magnetic pole of the rotor iron core is provided with multiple layers of arc-shaped permanent magnet grooves (6a, 6b); a q-axis magnetic flux path is formed between two neighboring magnetic poles; the permanent magnets are disposed in the permanent magnet grooves; two neighboring magnetic poles of the rotor are respectively a first magnetic pole and a second magnetic pole having opposite polarities; an outer endpoint of a permanent magnet in the first magnetic pole is a first outer endpoint, said outer endpoint is farther from the q-axis; an outer endpoint of the permanent magnet in the second magnetic pole is a second outer endpoint, said outer endpoint is farther from the q-axis; an included angle A of the first outer endpoint and the second outer endpoint with respect to the center of the rotor is less than an electrical angl

Abstract: An asynchronous starting and synchronous reluctance electric motor rotor, an electric motor and a compressor. The asynchronous starting and synchronous reluctance electric motor rotor includes a rotor core. The rotor core includes: a first magnetic barrier structure, with multiple groups of first magnetic barrier portions arranged at interval along a d-axis of the rotor core; and a second magnetic barrier structure, including two communicating magnetic barrier slots arranged at interval along the d-axis, the two communicating magnetic barrier slots being respectively located on two sides of the first magnetic barrier structure, the communicating magnetic barrier slots being arc-shaped slots extending circumferentially along the rotor core, and slot walls of two ends of the arc-shaped slots being arranged parallel to a q-axis.

Abstract: A tangential motor, a tangential motor rotor and a rotor core thereof are provided. The rotor core includes a rotor body and magnetic steel grooves provided on the rotor body 2N magnetic isolation holes are provided in a rotor magnetic pole between every two adjacent magnetic steel grooves. The 2N magnetic isolation holes are symmetrically provided at two sides of a magnetic pole center line of the rotor magnetic pole. A width of each of the magnetic isolation holes increases from a circle center of the rotor body to an outer side of the rotor body. Outer side hole surfaces, close to the outer side of the rotor body, of the magnetic isolation holes are arc-shaped surfaces which are concentrically arranged with the rotor body. The rotor core is able to reduce the vibration noise of the motor and increase the efficiency of the motor.

Abstract: The invention discloses an electric motor and a tangential type permanent magnet rotor. The tangential type permanent magnet rotor includes a rotor iron core (2) and permanent magnets (1) provided on the rotor iron core (2); a width of one side, close to the outer edge of the rotor iron core (2), of each of the permanent magnets (1) is H2; and a width of one side, close to the center of the rotor iron core (2), of each of the permanent magnets (1) is H1, wherein H2>H1. The tangential type permanent magnet rotor enables the width H2 of a permanent magnet part close to the outer edge of the rotor iron core to be larger, and enables the width H1 of a permanent magnet part close to the center of the rotor iron core to be smaller.

Abstract: Provided in the present invention is an ultralight artificial medium multilayer cylindrical lens, comprising n concentric layers of different dielectric constants. The center cylindrical layer is expressed as layer 1 and is a solid cylinder. Layers 2 to n are in a sequentially outward nested arrangement surrounding the center cylindrical layer and respectively are n-1 concentric rings. The n concentric layers are assembled into a multilayer cylinder and are characterized in that the dielectric constants of the n concentric layers gradually decrease from layer 1 to layer n and vary specifically between 2.05 to 1.05. Then concentric layers are made of a base material of low dielectric constant added with a material of high dielectric constant and low specific gravity. The lens so manufactured has a total apparent density of 0.08-0.095 g/cm3.

Abstract: Semiconductor structure and method for fabricating a semiconductor structure are provided. A substrate including device regions and an isolation region located adjacent to and between the device regions is provided. A fin on the substrate, gate structures across the fin at the device regions, source/drain doped regions in the fin at two sides of each of the gate structures, and a sacrificial gate across the fin at the isolation region are provided. The sacrificial gate and a portion of the fin near a bottom of the sacrificial gate are removed, thus forming a first opening in the fin. An insulation structure in the first opening is formed. Two sides of the sacrificial gate are in contact with the source/drain doped regions at adjacent device regions. A top surface of the insulation structure is flush with or higher than top surfaces of the source/drain doped regions.

Abstract: A rotor structure includes a rotor core and magnetic steel sheets. A shaft hole fixedly connected to a rotary shaft and an even number of magnetic steel grooves are formed on the rotor core along a rotation axis thereof. The magnetic steel grooves are symmetrically distributed around a periphery of the shaft hole in the rotor core, and the magnetic steel sheets are correspondingly installed in the magnetic steel grooves on a one-to-one basis. First through grooves extending axially and depressed radially are symmetrically distributed and formed around an inner surface of the shaft hole of the rotor core. First circulation holes are enclosed between the first through grooves and an outer surface of the rotary shaft. A motor includes a stator and the rotor structure arranged in an inner hole of the stator. A compressor includes the motor.

Abstract: A delay measurement circuit includes a transporting path selector, first and second delay measurement devices, and a controller. The delay measurement circuit forms a plurality of transporting loops through two of a first reference transporting conductive wire, a second reference transporting conductive wire, and a tested transporting conductive wire according to a control signal. The first delay measurement device respectively measures part of the transporting loops to obtain a plurality first transporting delays. The second delay measurement device respectively measures part of the transporting loops to obtain a plurality second transporting delays. The controller generates the control signal, and obtains a transporting delay of the tested transporting conductive wire according to the first transporting delays and the second transporting delays.

Abstract: Systems for completing missing points in a three-dimensional (3D) point cloud. The systems include a 3D sensor for measuring point data of objects in a scene, a processor in connection with the 3D sensor and a memory storing a program and the point data, and a display monitor connected to the processor and the 3D sensor for displaying a completed 3D point cloud, wherein the processor executes instruction steps of the program. The instruction steps include acquiring the point data of the objects to generate the 3D point cloud, wherein the point data include a set of points on the objects, extracting planar segments from the 3D point cloud, identifying connectivity relations and missing points among the planar segments, and filling the missing points in the 3D point cloud to generate the completed 3D point cloud using the planar segments and the connectivity relations.

Abstract: The invention discloses an electric motor and a tangential type permanent magnet rotor. The tangential type permanent magnet rotor includes a rotor iron core (2) and permanent magnets (1) provided on the rotor iron core (2); a width of one side, close to the outer edge of the rotor iron core (2), of each of the permanent magnets (1) is H2; and a width of one side, close to the center of the rotor iron core (2), of each of the permanent magnets (1) is H1, wherein H2>H1. The tangential type permanent magnet rotor enables the width H2 of a permanent magnet part close to the outer edge of the rotor iron core to be larger, and enables the width H1 of a permanent magnet part close to the center of the rotor iron core to be smaller.

Abstract: Systems for completing missing points in a three-dimensional (3D) point cloud. The systems include a 3D sensor for measuring point data of objects in a scene, a processor in connection with the 3D sensor and a memory storing a program and the point data, and a display monitor connected to the processor and the 3D sensor for displaying a completed 3D point cloud, wherein the processor executes instruction steps of the program. The instruction steps include acquiring the point data of the objects to generate the 3D point cloud, wherein the point data include a set of points on the objects, extracting planar segments from the 3D point cloud, identifying connectivity relations and missing points among the planar segments, and filling the missing points in the 3D point cloud to generate the completed 3D point cloud using the planar segments and the connectivity relations.

Abstract: A hair curler includes a curling iron assembly and comb tooth assembly arranged on the curling iron assembly. The curling iron assembly includes a heating body (12) and a metal sleeve (11) disposed around the heating body (12), the metal sleeve (11) having a linear groove (111) formed in an outer surface of the metal sleeve (11). The comb tooth assembly includes a comb tooth bar (21) disposed within the linear groove (111), a recess (211) formed between a bottom wall of the linear groove and an interior portion of the comb tooth bar (21), and a plurality of pivotal comb teeth (22) having an inserted portion (221) pivotally retained within the recess (211), wherein the pivotal comb teeth (22) are movable relative to the comb tooth bar (21).

Abstract: An embodiment of the present invention is an identification circuit for generating an identification number (ID). The identification circuit includes a plurality of identification cells each comprising a latch having a first output and a second output that are opposite to each other. The first output and the second output are a function of process variations of the identification circuit. A first buffer and a second buffer are provided on both sides of the latch and connected to the first output and the second output of the latch, respectively.

Abstract: Disclosed are a permanent magnet motor rotor (110) and a permanent magnet synchronous motor (100). The permanent magnet motor rotor (110) comprises: a rotor core (111); tangentially magnetized main-pole permanent magnets (112), the main-pole permanent magnets (112) being disposed in a radial direction of the rotor core (111), the main-pole permanent magnets (112) being uniformly arranged in a circumferential direction of the rotor core (111), and the closest surfaces of any two adjacent main-pole permanent magnets (112) having same magnetic poles; and an auxiliary permanent magnet (113) being disposed in the radial direction of the rotor core (111), the auxiliary permanent magnet (113) being located between any two adjacent main-pole permanent magnets (112), so as to raise the operating point of the main-pole permanent magnet, thereby achieving the purpose that the demagnetization resistance capacity of the main-pole permanent magnet is improved, and the demagnetization risk is reduced.

Abstract: A brush includes a housing, an air inlet formed in an end of the housing, an air discharge portion formed in the housing, the air discharge portion having a plurality of air outlets, and an air combing head disposed at the air discharge portion, the air combing head having a plurality of brush teeth. A thermal insulation cylinder is arranged inside the housing, where the thermal insulation cylinder has a cylinder opening facing toward the air inlet, an outlet formed a distance away from the cylinder opening, and an inner diameter gradually decreasing from the cylinder opening to the outlet. A heating element is arranged inside the thermal insulation cylinder. An air guiding mechanism is also positioned within the housing to direct air from the air inlet to the air discharge portion of the housing.

Abstract: An embodiment of the present invention is an identification circuit for generating an identification number (ID). The identification circuit includes a plurality of identification cells each comprising a latch having a first output and a second output that are opposite to each other. The first output and the second output are a function of process variations of the identification circuit. A first buffer and a second buffer are provided on both sides of the latch and connected to the first output and the second output of the latch, respectively.