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227results about How to "Eliminate misalignment" patented technology

Helmet with Improved Shield Mount and Precision Shield Control

A closed face motorcycle helmet includes a shell with an eyeport and a shield attached for hinged motion between a closed position covering and sealing the eyeport and an open position displaced above the eyeport. A hinge plate is attached to the shell on each side and includes a socket into which a hub of the shield is rotatably disposed for hinged movement of the shield. A lever assembly having a downwardly extending lever and a hub with two dowels is attached to the bottom of the hinge plate. The lever assembly is manually movable between a central home position, a forwardly rotated shield cracking position, and a rearwardly rotated shield restraining position. A motion plate is attached to a lower edge of the shield and covers the hub and dowels of the lever assembly when the shield is closed. Surfaces on the inside of the motion plate interact with the dowels of the lever assembly to provide multiple precision shield control functions. Specifically, flipping the lever forward cracks the shield slightly open to eliminate fog and flipping it rearwardly applies an additional restraining force to the shield preventing it from being blown open by aerodynamic forces, especially at high speeds. A live beam mechanism with micro detents interacts with a projection on the shield to provide fluid-like operation of the shield and the ability to position the shield at virtually any location between fully closed and fully opened.
Owner:BELL SPORTS INC

Method for correcting misplaced partial image splicing

The invention relates to a method for correcting misplaced partial image splicing. The method comprises the following steps: in step 1, a misplaced spliced area in a panoramic spliced image with misplacement is determined, two spliced sub-images for splicing the area are determined, and the misplaced spliced area is taken as an area to be corrected; in step 2: exact matching is performed on the two spliced sub-images in the area to be corrected, a transformation matrix for exactly matching the two spliced sub-images in the area to be corrected, and initial coordinate offset used to correct themisplacement can be calculated accordingly; in step 3, weighted correction is performed, correction transformation is performed via weighted corrected coordinate offset, an offset weight coefficientis 1 in a central area of the area to be corrected and is 0 in an edge region of the area to be corrected, and the offset weight coefficient gradually transits between the area with the offset weightcoefficient being 1 and the area with the offset weight coefficient being 0. The method disclosed in the invention helps ensure that the correction transformation of a specified area is completed while that images in the area to be corrected and images beyond the area to be corrected are spliced is ensured, and a panoramic spliced image with eliminated misplacement is obtained.
Owner:北京天睿空间科技股份有限公司

Fixed wing unmanned aerial vehicle touring image accurately-splicing method for power transmission line

The invention discloses a fixed wing unmanned aerial vehicle touring image accurately-splicing method for a power transmission line. The accurately-splicing method includes the following steps: (1) conducting data preparation and sample training; (2) conducting feature extraction on the power transmission line based on textural features and straight line features to obtain a power transmission line distributing area and power transmission line extraction data, screening the power transmission line extraction data through the power transmission line distributing area, and obtaining power transmission line extracting results through power transmission line double-edge features; (3) conducting SIFT image registration and fusing based on power transmission line customization on the power transmission line extracting results. According to the fixed wing unmanned aerial vehicle touring image accurately-splicing method, curvelet transformation is adopted for achieving extraction on power transmission line texture information and detection on power transmission line distribution, and the power transmission line double-edge features in high-resolution unmanned aerial vehicle images are further adopted for obtaining the reliable and accurate power transmission line extracting results.
Owner:EXAMING & EXPERIMENTAL CENT OF ULTRAHIGH VOLTAGE POWER TRANSMISSION COMPANY CHINA SOUTHEN POWER GRID +1

Flexible printed circuit board steel disc reinforcing hot-pressing making process

The invention discloses a flexible printed circuit board steel disc reinforcing hot-pressing making process, including that pure glue is firstly adhered on the steel disc reinforcing position of the flexible printed circuit board and then steel disc is adhered, lamination curing is carried out to complete steel disc reinforcing, and the steel disc is fixed by steel disc adhesion jig. The invention adopts electric iron to preheat the steel disc firstly, so that certain stickiness is kept between the steel disc and the flexible printed circuit board and the steel disc can not drop in the process that the flexible printed circuit board is taken out and transferred; and the pure glue used for adhering the flexible printed circuit board and reinforcing the steel disc in steel disc hot-pressing process is thermosetting glue, namely glue system capable of being molten and cohered under heating condition and can be cured after curing at certain temperature for a while, so that the steel disc is firmly adhered on the flexible printed circuit board and can not drop in post making processes. The invention has simple making process and strong feasibility, can thoroughly avoid steel disc dropping and deviation problems and has wide applicability and higher production efficiency.
Owner:XIAMEN HONGXIN ELECTRON TECH

Implanting machine for nuclear power plant reactor king bolt and method for implanting bolt

The invention discloses an implanting machine for a nuclear power plant reactor king bolt and a method for implanting the bolt. A support is arranged between a machine base and a drive assembly, a self-adaptive centering assembly is fixed to the support, the drive assembly is connected with a lead screw, the lead screw is sleeved with a load balancer assembly, a clutch is connected with a chuck, the implanting machine is connected with the king bolt in a sleeved mode, an electromagnetic coil is energized, and the chuck is connected with the head of the king bolt after the clutch is disengaged; the king bolt stops when being close to a reactor container king bolt hole; the king bolt is guided into the king bolt hole, and a balance load is adjusted to be at an ideal value; when the king bolt moves downwards to a preset position, the load of a load balancer is reduced to be at an initial value, and the chuck of the implanting machine is lifted to an original position. The implanting machine is quick to locate, the king bolt guide-in process is stable, impact force is small, centering errors of the king bolt and the king bolt hole are automatically eliminated, pressure and impact on a thread auxiliary surface can be reduced to the maximum, stable load balance capacity is kept, and the change situation of the gravity of the king bolt can be tracked in real time in the whole course.
Owner:CHENGDU HAIGUANG NUCLEAR POWER TECH SERVICE CO LTD

High-strength, low-temperature, and thick-gauge hot-rolled plate strip coil shape control method

The present invention relates to a high-strength, low-temperature and thick-gauge hot-rolled plate strip coil shape control method, which is characterized in that the control method comprises that: 1) before a strip steel reaches a coiler, a clamping and conveying roller and auxiliary coiling rollers are in roller gap control manners; 2) after the clamping and conveying roller bites the strip steel, the roller gap control manner of the clamping and conveying roller is switched into a pressure control manner; 3) during coiling of the previous several circles of the strip steel by a coiling cylinder, the auxiliary coiling rollers 1#, 2# and 3# are in the pressure control manners or roller gap control manners; 4) after coiling of the previous several circles of the strip steel by the coiling cylinder, the number of the circles is set as the X0 and is manually set, the auxiliary coiling roller 2# is completely opened so as to make a coil unloading trolley lift and be ready for unloading, and the auxiliary coiling rollers 1# and 3# enter a stepping control manner and the roller gap control and pressure control alternate control manner, wherein the phenomenon that the auxiliary roller always presses on the strip steel so as to cause the strip steel surface scratch can be avoided; and 5) the clamping and conveying roller both-side pressure control PID adjuster control parameters P value and I value are adjusted.
Owner:SHANGHAI MEISHAN IRON & STEEL CO LTD

Helmet with Improved Shield Mount and Precision Shield Control

A closed face motorcycle helmet includes a shell with an eyeport and a shield attached for hinged motion between a closed position covering and sealing the eyeport and an open position displaced above the eyeport. A hinge plate is attached to the shell on each side and includes a socket into which a hub of the shield is rotatably disposed for hinged movement of the shield. A lever assembly having a downwardly extending lever and a hub with two dowels is attached to the bottom of the hinge plate. The lever assembly is manually movable between a central home position, a forwardly rotated shield cracking position, and a rearvardly rotated shield restraining position. A motion plate is attached to a lower edge of the shield and covers the hub and dowels of the lever assembly when the shield is closed. Surfaces on the inside of the motion plate interact with the dowels of the lever assembly to provide multiple precision shield control functions. Specifically, flipping the lever forward cracks the shield slightly open to eliminate fog and flipping it rearwardly applies an additional restraining force to the shield preventing it from being blown open by aerodynamic forces, especially at high speeds. A live beam mechanism with micro detents interacts with a projection on the shield to provide fluid-like operation of the shield and the ability to position the shield at virtually any location between fully closed and fully opened.
Owner:BELL SPORTS INC

Gap removing device for assembling workpieces by inserting

The invention discloses a gap removing device for assembling workpieces by inserting. The device comprises a first vibrating discharging mechanism, a second vibrating discharging mechanism, a first workpiece staggering mechanism, a second workpiece staggering mechanism and an assembling carrying detecting mechanism, wherein the first vibrating discharging mechanism is connected with the first workpiece staggering mechanism; the second vibrating discharging mechanism is connected with the second workpiece staggering mechanism; a first workpiece sequentially runs through the first vibrating discharging mechanism and the first workpiece staggering mechanism and then is conveyed to the assembling carrying detecting mechanism; a second workpiece sequentially runs through the second vibrating discharging mechanism and the second workpiece staggering mechanism and then is conveyed to the assembling carrying detecting mechanism; the first workpiece and the second workpiece are assembled and detected through the assembling carrying detecting mechanism. According to the gap removing device, an adjustable floating gripping device is utilized to remove the factors such as inaccurate centering, poor assembling and wear damage on the workpieces in assembling, and the processed workpieces are free of the requirements on high processing precision and matching precision.
Owner:TZTEK TECH

Telescope pointing error correction method and telescope

The invention provides a telescope pointing error correction method comprising the concrete steps: a master control unit obtains the data measured by a position sensor, calculating the first deviationbetween the current optical axis position of a primary mirror and the ideal optical axis position and outputting the first deviation to a frame spindle servo control system to make the frame spindleservo control system perform correction; and the master control unit obtains the attitude of the telescope, calculates the current optical axis position of a secondary mirror, then calculates the second deviation of the current position of the secondary mirror according to the current optical axis position of the primary mirror and the calculated current optical axis position of the secondary mirror and outputs the second deviation to a six-degree-of-freedom platform to enable the six-degree-of-freedom platform to perform correction. The invention also provides a telescope. Compared with the methods in the prior art, the beneficial effects are that the correction method can correct the pointing error caused by the spindle jitter of the telescope due to the external interference and can also correct the pointing error caused by the alignment of the primary and secondary mirrors so as to improve the optical performance of the telescope.
Owner:CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI

Position correction method, scanning control method, medium and equipment for selective laser melting

The invention relates to a position correction method, a scanning control method, a medium and equipment for selective laser melting. The position correction method comprises the following steps of: acquiring a pre-machining section of a part model of a part to be machined at a current position in slicing software; controlling a scanner to scan a contour line containing at least two characteristicpoints according to the pre-machining section so as to obtain a printed contour line on a covering plate covering corresponding points of corresponding characteristic points on the part to be machined; obtaining a position deviation value between position points of the corresponding characteristic points on the printed contour line and corresponding points of the corresponding characteristic points on the actual contour line of the part to be machined; and correcting the current position of the part model based on the position deviation value. Therefore, the position deviation value can accurately reflect the deviation between the position of the part model and the actual position of the part to be machined in the slicing software, thereby correcting the position of the part model in theslicing software according to the position deviation value, effectively eliminating dislocation, improving the scanning dimension precision and improving the forming precision of printing manufacturing.
Owner:HUNAN FARSOON HIGH TECH CO LTD

Rope traction monorail crane system braking vehicle

The invention discloses a rope traction monorail crane system braking vehicle, and the rope traction monorail crane system braking vehicle comprises a frame, two pairs of walking wheels and two pairs of brake shoes are arranged between two sidewalls of the frame, two pairs of brake shoes are driven by a pair of brake arms, two pairs of brake arms are driven by brake oil cylinder, the frame is provided with a speed selecting and increasing device, the speed selecting and increasing device comprises a first speed selecting wheel, a second speed selecting wheel, a clamping oil cylinder, a dual-direction hydraulic motor and a gearbox, the first speed selecting wheel shaft and the second speed selecting wheel shaft are supported by the first wheel shelf and the second wheel shelf, the shaft of the second speed selecting wheel is connected to the low speed shaft of the gearbox through cross-shaped universal coupler, the high speed shaft of the gearbox is connected to the drive shaft of the dual-direction hydraulic motor through elastic coupler. The speed selecting and increasing device controls two pairs of brake shoes of the braking vehicle by selecting speed judgment, the brake shoes on the other vehicles can also be controlled for guaranteeing the safe drive for the rope traction monorail crane system.
Owner:CHANGZHOU DEV & MFR CENT

Multi-common-turning-point lateral intersection traverse surveying method

The invention belongs to a multi-common-turning-point lateral intersection traverse surveying method used for narrow underground caverns short in intervisibility distance and changed in traverse extending paths in the technical field of engineering surveying. The multi-common-turning-point lateral intersection traverse surveying method includes the steps of arranging at least two survey stations on a traverse extending path, arranging a plurality of public survey turning points on the other sides of connection lines among the survey stations uniformly, and adopting a high-precision total station for automatic observation; correcting surveyed slope distance and using the same to compute an independent coordinate for each survey station; computing three converting parameters between the independent coordinate and an integral coordinate of each public turning point between adjacent survey stations by the aid of a least-square indirect adjustment method and a robust estimation method, and converting the independent coordinates into integral coordinates. The multi-common-turning-point lateral intersection traverse surveying method has the advantages that enough redundant observation objects for traverse transferring and high precision are achieved, influence of lateral refraction is avoided, influence of error of centralization of an instrument and a prism during traverse transferring is eliminated, influences of gross observation error on an adjustment result are reduced, and the multi-common-turning-point lateral intersection traverse surveying method is suitable for places in difficult conditions, such as narrow underground caverns, curve paths and visualizing obstacles, and capable of improving precision and reliability of traverse transferring.
Owner:CHINA RAILWAY NO 2 ENG GRP CO LTD +1
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