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96 results about "Thermal distortion" patented technology

System and method for monitoring included angle and absolute direction of front and rear view visual axes of surveying and mapping camera

The invention belongs to the technical field of space remote sensing surveying and mapping, and particularly relates to a monitoring system and method for a front and rear view visual axis included angle and absolute direction of a surveying and mapping camera. The method comprises the following steps: S1, through side sway of a satellite platform, taking a time for sky imaging calibration as a reference time; s2, calculating a rotation matrix from a front and rear view ground camera measurement coordinate system to a star camera coordinate system at a reference moment; s3, calculating respective thermal deformation matrixes of the star camera coordinate system, the front-view camera measurement coordinate system and the rear-view camera measurement coordinate system; s4, obtaining a real-time rotation matrix from the measurement coordinate system of the front-view camera to the coordinate system of the star camera and a real-time rotation matrix from the measurement coordinate system of the rear-view camera to the coordinate system of the star camera at the measurement moment; and S5, carrying out arc cosine calculation on the two absolute pointing vectors to obtain a visual axis included angle between the front-view camera and the rear-view camera at the measurement moment. According to the invention, while the geometric accuracy of the surveying and mapping camera is ensured, the real-time performance of measurement and the comprehensiveness of subsystem monitoring are realized at the same time.
Owner:CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI

Error modeling method and system based on CCD camera alignment assembly system

The invention provides an error modeling method and system based on a CCD camera alignment assembly system, and relates to the technical field of high-precision electronic manufacturing assembly, and the method comprises the steps: obtaining internal parameters and external parameters of a CCD camera through calibration, building a camera and mechanical coordinate system conversion relation, and constructing a collaborative calibration error tree; controlling the motion platform to move, synchronously acquiring pose and environment temperature data, decomposing vibration and thermal deformation error components through time-frequency analysis, and superposing the vibration and thermal deformation error components into dynamic errors; extracting a positioning error based on the pose data, and constructing a mechanical-optical coupling error spectrum in combination with the distortion parameters; and finally, fusing the collaborative calibration error tree, the dynamic error and the coupling error atlas to generate a global error atlas, and completing alignment assembly system error modeling based on the CCD camera. According to the invention, the precision and applicability of error modeling are improved.
Owner:JIANGSU GEQU INTELLIGENT TECHNOLOGY CO LTD

Carbon quantum dot hydrothermal synthesis system and method based on microfluidics thermal field equilibrium

PendingCN121988250AEliminate lagEliminate errorsNanoopticsNano-carbonTemperature controlConjugated heat transfer
The invention relates to the technical field of microfluidics, in particular to a carbon quantum dot hydrothermal synthesis system and method based on microfluidics thermal field equilibrium, which comprises a thermal field sensing module, an equilibrium analysis module, a thermal field coupling module, an equilibrium regulation and control module and a closed loop execution module, the thermal field sensing module is used for collecting array temperature on the surface of the micro-fluidic chip and fluid pressure data in a flow channel, and reconstructing three-dimensional temperature distribution in the micro-channel through a multi-physics field coupling algorithm to obtain a real-time thermal field state matrix. According to the invention, by constructing a multi-physical field coupling algorithm of a thermocouple array-flow resistance model-conjugate heat transfer equation, the three-dimensional temperature distribution of the fluid in the micro-channel can be inverted and reconstructed by using surface temperature and pressure data, so that a control system can pass through a chip matrix, and the temperature of the fluid in the micro-channel can be controlled. The radial temperature gradient and the axial thermal distortion in the fluid are directly sensed, the hysteresis and the error of sensor measurement are eliminated, and a real physical basis is provided for accurate temperature control.
Owner:HAINAN VOCATIONAL COLLEGE OF SCI & TECH

Vacuum coating process parameter self-adaptive adjusting method and system

The invention discloses a vacuum coating process parameter adaptive adjustment method and system, the system comprises a data acquisition layer, a DRL intelligent agent and an execution layer, the DRL intelligent agent comprises a strategy network and an evaluation network, the DRL intelligent agent adopts a double-loop learning mechanism, and the DRL intelligent agent comprises an offline imitation learning module and an online reinforcement learning module. According to the technical scheme, through DRL decoupling multi-roller coupling, the tension fluctuation control precision is obviously improved compared with traditional PID control; factors such as roller diameter thermal deformation and environmental disturbance are automatically compensated through an online learning mechanism, the dynamic adaptability is enhanced, and manual adjustment is not needed; in addition, closed-loop control of visual defect detection is fused in the technical scheme, so that the film thickness uniformity is greatly improved, and the wrinkle defect rate is obviously reduced.
Owner:GOLD STONE (FUJIAN) ENERGY CO LTD

Double-station solder ball welding machine correction system based on machine vision and multi-axis cooperation

The invention discloses a double-station solder ball welding machine correction system based on machine vision and multi-axis cooperation, and belongs to the field of welding equipment correction. A double-station solder ball welding machine correction system based on machine vision and multi-axis cooperation comprises an image acquisition unit, a visual processing unit, a multi-axis control unit and a cooperative scheduling unit. The problems that in existing double-station welding equipment, due to the fact that a single-station vision scheme is simply copied, the equipment takt is slow, the productivity is limited, and comprehensive compensation for dynamic errors and optical environment differences under multi-station collaborative operation is lacked are solved. Compared with the prior art, the double-station equipment has the advantages that overlapped execution of visual correction and welding operation is achieved, and feed-forward and online compensation mechanisms for dynamic errors such as thermal deformation and vibration are integrated, so that high-precision positioning is guaranteed, and the production efficiency and the operation reliability of the double-station equipment are remarkably improved.
Owner:SHENZHEN INFEASANT TECH CO LTD

Gas turbine flame detector installation device and light path determination method and system

The invention discloses a gas turbine flame detector installation device and a light path determination method and system, and relates to the technical field of gas turbine safety monitoring and combustion diagnosis. The mounting device is connected with a combustion pressure cylinder and a flame tube through a displacement compensation assembly with a floating sealing structure, and can automatically absorb the thermal expansion difference between the combustion pressure cylinder and the flame tube and limit vibration disengagement so as to provide long-term stable support for a light guide tube; the invention relates to a light path determination method, which comprises the following steps: analyzing a combustion grading strategy, simulating and positioning a radiation core, primarily selecting a light path by taking a maximum coverage area as a criterion, carrying out dynamic space interference check, and finally outputting an accurate mounting position coordinate. The light path design method solves the dual technical problems that an experience-dependent light path design method is not accurate in the arrangement of the flame detector of the heavy-duty gas turbine, and the installation structure is damaged or the light path deviates easily due to thermal deformation.
Owner:CHINA UNITED GAS TURBINE TECH CO LTD

A galvanometer scanning distortion real-time correction method and system based on visual feedback

The application discloses a galvanometer scanning distortion real-time correction method and system based on visual feedback, relates to the technical field of galvanometer scanning, and comprises a preset standard scanning track, acquisition of ideal scanning coordinates of each feature point in the standard scanning track under a galvanometer scanning coordinate system, and a track image corresponding to a moment and galvanometer angle data when the standard scanning track is scanned by the galvanometer. The application compensates inherent static distortion caused by optical geometry and assembly error by means of an initial static linear distortion correction table and an initial static nonlinear distortion correction table, and when irreversible thermal drift in dynamic thermal distortion accumulates beyond the standard, the increment is automatically updated to the static correction table, permanent deformation is converted into static compensation, and the reversible thermal distortion part is automatically rolled back when the galvanometer is stopped and cooled, so that the high-efficiency elimination capacity of static calibration on inherent distortion is retained, and irreversible deformation generated by long-term thermal cycle can be dynamically adapted.
Owner:PRECISION SCAN INC

A lithography machine error correction method and system

PendingCN122284235AWavefrontEngineering
This invention relates to the field of semiconductor lithography error correction technology, specifically a lithography machine error correction method and system. The method includes: deploying an interferometric sampling array to capture the initial wavefront phase distribution to obtain a reference wavefront field; using a thermal drift separation operator to remove the slowly varying drift component caused by environmental thermal effects; and using multidimensional convolution matching between the residual wavefront field and a nominal lens aberration feature library to identify static aberration patterns, generating an inverse aberration compensation driving signal. A time-varying trend predictor based on a Kalman filter framework is used to continuously estimate future thermal drift, which is then superimposed with the inverse aberration compensation driving signal to synthesize a composite correction instruction set. Based on this instruction set, the workpiece stage positioning system and the projection lens focusing system are jointly kinematically adjusted to offset the overlay error jointly introduced by aberrations and thermal deformation. This method can separate the thermal drift component, improve aberration recognition accuracy, and achieve feedforward thermal drift correction and dual-system coordinated adjustment.
Owner:ANHUI GUOXIN SMART EQUIP CO LTD

A thermal distortion resistant mirror cell for high power laser systems

The application belongs to the technical field of laser optics, and particularly relates to a heat distortion resistant mirror seat for a high-power laser system; the mirror seat comprises a seat body, a plurality of convex bosses for limiting a mirror are arranged on the inner side wall of the seat body, a contact plate for bearing the mirror is arranged in the frame of the seat body, a group of heat dissipation fins are arranged on the bottom of the contact plate, flexible grooves and threaded holes are respectively arranged in the frame of the seat body at positions corresponding to the convex bosses, a flexible pressing ring is fixed to the top end of the seat body through the threaded holes and is used for pressing the mirror, mounting holes corresponding to the threaded holes are arranged on the flexible pressing ring, and a flexible groove of the pressing ring is arranged on the inner side of each mounting hole; the application is suitable for the working condition that the temperature of the mirror continuously rises, can effectively reduce the temperature level of the mirror, and effectively solves the mirror surface shape distortion problem caused by the fact that the mirror seat extrudes the mirror due to the mismatch of the thermal expansion coefficients of the mirror seat and the mirror.
Owner:CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI

Imaging device

The present disclosure provides an image pickup apparatus capable of reducing an optical axis shift of an optical lens with respect to an image pickup element caused by thermal deformation of a component. An imaging device is provided with a lens holder (110), a substrate (120), and a bonding portion (130). A lens holder (110) has: a lens barrel (111) that holds an optical lens (101); and a holder base section (112) that supports the lens barrel (111), is joined to the substrate (120) via a joining section (130), and surrounds the imaging element (102). The substrate (120) has: a narrow section (121) that surrounds a part of the outer periphery of the imaging element (102) on the inside of the holder base section (112); and a wide section (122) that is wider than the narrow section (121) and surrounds the remainder of the outer periphery of the imaging element (102) on the inside of the holder base (112). The imaging device is provided with a displacement adjustment unit (160) that makes the relative displacement of the lens barrel (111) and the substrate (120) in the direction in which the imaging element moves from the narrow section (121) to the wide section (122) easier than the relative displacement of the lens barrel (111) and the substrate (120) in the direction in which the imaging element moves from the wide section (122) to the narrow section (121).
Owner:ASTEMO LTD

Engineered cut-outs for a display back light unit

ActiveUS12563168B2Steroscopic systemsNon-linear opticsStereoscopic videoDisplay device
Systems and methods are described for reducing thermal distortion in an optical display for use in a 3D stereoscopic video conferencing system. The thermal distortion can arise from operation of an array of LEDs in a back light unit of the display. Forming cut-outs in the display can interrupt the flow of heat to maintain geometric stability of precision cameras mounted to the display edges while also allowing sufficient heat dissipation paths for the LEDs. Structural reinforcement bars can be added, and an opaque film can be used to block light loss from the LEDs.
Owner:GOOGLE LLC

Compensation of thermal deformations induced by the operation under thermal control during the manufacturing of optical elements during operation

A method for manufacturing an optical element (1) of an optical system, which optical element has a target surface shape (1a) and / or a target optical effect during operation of the optical system, wherein the optical element (1) has an average operating temperature (F), which is controlled by at least one thermal manipulator (2) during operation of the optical system. The invention also relates to an optical element for an optical system and to an optical system for a semiconductor technology device.
Owner:CARL ZEISS SMT GMBH

A new method for controlling the amount of thermal distortion in the machining of a part

The application provides a new method for controlling the amount of thermal deformation in part processing, and belongs to the technical field of part processing, and comprises the following steps: taking a part to be processed and placing it in a cleaning device; the application is internally provided with a preheating step for the part, and after preheating, the part is subjected to a nitriding and oxidizing treatment process, so that the structural strength of the treated part is improved, the internal stress of the part is relieved to a certain extent, the oxidation layer on the outer part can bind the part to a certain extent, the thermal deformation of the part is well controlled, and the method is further provided with a physical anti-deformation process, specifically, two smooth plates are used to press the upper and lower walls of the part to achieve physical pressure on the part, so that thermal deformation of the part is avoided, and through the combination of processing and physical control of the part, the control effect of the thermal deformation of the part is greatly improved, and the overall method has good practical application effect.
Owner:XIAN ZHIHUI AVIATION TECH CO LTD

Double-head quasi-synchronous laser welding equipment

The invention belongs to the field of galvanometer laser welding, and particularly relates to double-head quasi-synchronous laser welding equipment which comprises a rack and a displacement mechanism mounted at the top, and the displacement mechanism is used for adjusting different positions to weld workpieces; the welding mechanism is mounted on the displacement mechanism and is used for welding the workpiece; the first treatment mechanism is installed on the welding mechanism and used for blocking chippings generated during welding and meanwhile conducting cooling treatment on the edge and the front face of the galvanometer body; through air seal protection and rotary heat dissipation of the first processing mechanism, welding scraps and dust are intercepted, accumulated heat on the outer edge of the galvanometer body is rapidly guided out, and impurity attachment and lens thermal deformation are avoided; and the second treatment mechanism realizes removal of harmful substances and impact type cooling of the bottom surface of the galvanometer through purification, refrigeration and recovery of hot flue gas in a closed loop, so that the environment-friendly working environment is guaranteed, a heat dissipation system is formed by the second treatment mechanism and the first treatment mechanism, the thermal lens effect is effectively inhibited, and the service cycle of the galvanometer and core components is remarkably prolonged.
Owner:SHANGHAI GUANYI MECHANICAL & ELECTRICAL CO LTD

Heat-resistant reflector support frame

ActiveCN224436673URealize two-way anti-deformation operationAchieve edge lateral locking operationOptical instrumentationMechanical engineering
This utility model discloses a heat-deformation resistant reflector support frame, specifically relating to the field of reflector support technology. It includes a lower arc frame, with a bidirectional assembly mounted above it. The bidirectional assembly includes: an upper arc frame, abutting against the upper surface of the lower arc frame, with side inserts slidably embedded on both sides of each upper arc frame; and a mounting block, fixedly connected to the top of the side inserts. A locking bolt is inserted into the interior of the side insert, and a locking nut is threaded onto the outer wall of the locking bolt near one end. Through this bidirectional assembly, the lower and upper arc frames vertically fix the optical instrument reflector, allowing the side inserts to be inserted laterally along the upper arc frame and pressed against the lateral surface of the optical instrument reflector. This achieves dual edge locking of the optical instrument reflector both vertically and laterally, enabling bidirectional anti-deformation operation of the optical instrument reflector.
Owner:KUNSHAN HABAI PRECISION EQUIP CO LTD

Laser bevel processing device for touch screen functional sheet silver paste

The application provides a touch screen function sheet silver paste laser bevel processing device, belonging to the touch screen processing technical field. The quality detection assembly, wherein the confocal microscopic technique, provides the three-dimensional surface imaging ability of nanometer level resolution, can monitor the processing of the silver paste edge bevel in real time, the three-dimensional adjustable support supports the probe to adjust in the X / Y / Z axis direction, cooperates with the nanometer level displacement detection ability of the miniature confocal microscope, can calibrate the bevel angle of the laser processing head and the function sheet in real time, thereby ensuring the accuracy of the bevel cutting, avoiding the short circuit of the silver paste line caused by the angle error, the high light reflection smoke dust is easy to produce during the laser processing, the air curtain isolation device forms a barrier through the annular airflow, can blow away the particles generated by the molten silver paste in real time, ensures the definition of the microscopic image, and the ceramic sleeve keeps the structure stable under the high temperature environment generated by the laser processing, prevents the deviation or failure of the miniature confocal microscope lens caused by thermal deformation.
Owner:ZHEJIANG LIANXINKANG TECH CO LTD

A directional cooling device for the high heat load region of an ion accelerator

ActiveCN120475608BNuclear energy generationCooling/ventilation/heating modificationsIon accelerationIon accelerators
This invention relates to the field of ion accelerator cooling technology, and more particularly to a directional cooling device for the high heat load region of an ion accelerator. The device includes a fixed tube, a connecting tube, and a cooling tube. The fixed tube is connected to the outlet end of the ion accelerator vacuum pipe, and the connecting tube is connected to the fixed tube. The cooling tube forms a spiral structure and is fitted onto the outer circumference of the connecting tube. A cooling medium flows inside the cooling tube. The cooling tube includes a first spiral section near the fixed tube and a second spiral section away from the fixed tube. The pitch of the first spiral section is smaller than the pitch of the second spiral section. This invention achieves segmented enhanced cooling in the high heat load region of the ion accelerator through a variable pitch cooling tube. The densely pitched first spiral section enhances high-temperature heat dissipation, while the loosely pitched second spiral section reduces flow resistance, significantly improving the cooling efficiency and maintenance convenience of the ion accelerator cooling device. It achieves directional enhanced cooling for high heat load regions such as the analytical magnet front-end pipe and the accelerator tube outlet, avoiding beam thermal distortion.
Owner:INST OF MODERN PHYSICS CHINESE ACADEMY OF SCI

Dish type fire extinguishing aircraft attitude control method based on visual positioning

The invention relates to the technical field of aircraft control, and particularly discloses a disc-shaped fire extinguishing aircraft attitude control method based on visual localization, and the method comprises the steps: carrying out the analysis of the dense smoke distribution type in an edge precise region in the fire extinguishing process of the edge precise region of a forest fire through a fire extinguishing aircraft, and obtaining a fire extinguishing result; and when the dense smoke distribution type of the region is determined to be non-uniform distribution, carrying out high-temperature thermal distortion analysis on the edge precision sub-regions divided in the edge precision region, and screening out the high-concentration thermal distortion sub-regions and the low-concentration thermal distortion sub-regions, so that regions which have relatively large threats on visual positioning and flight safety of the aircraft can be accurately positioned, and the accuracy of the aircraft visual positioning and the flight safety can be improved. An aircraft operator or an intelligent control system can clearly know the danger distribution condition of a fire scene, and in the process that the aircraft enters the high-concentration thermal distortion subarea from the low-concentration thermal distortion subarea, data support can be provided for early warning of aircraft flight attitude adjustment.
Owner:GUANGXI BENBAO WING RING TECH CO LTD

Optical splicing focal plane assembly applied to space remote sensing camera

The invention relates to the field of space remote sensing, in particular to an optical splicing focal plane assembly applied to a space remote sensing camera, which comprises a focal plane substrate, and a direct detector assembly, a reflection detector assembly, an optical splicing focal plane reflector assembly, a module support assembly and a thermal control assembly which are respectively mounted on the focal plane substrate, wherein the direct radiation detector assembly is used for directly receiving optical signals and converting the optical signals into electric signals, the reflection detector assembly is used for receiving the optical signals reflected by the optical splicing focal plane reflector assembly and converting the optical signals into electric signals, and the module supporting assembly is used for supporting rear end modules of the direct radiation detector assembly and the reflection detector assembly. The thermal control assembly is used for guiding out heat generated by the direct radiation detector assembly, the reflection detector assembly and the module supporting assembly. The problem of thermal deformation caused by working temperature rise of the detector is effectively inhibited, and the imaging positioning precision of the space remote sensing camera is remarkably improved.
Owner:CHANGCHUN CHANGGUANG ZHIYUAN TECHNOLOGY CO LTD

Film, laminate and packaging container

An object of the present disclosure is to improve the heat distortion resistance of a film containing polyethylene as a main component.SOLUTION: A film containing, as a main component, a high-density polyethylene (A) satisfying at least one requirement selected from the group consisting of the following (1) and (2): (1) The high density polyethylene (A) has a peak having a Full-WidthatQuarter-Maximum value of less than 1.5 in a differential molecular weight distribution curve obtained by high temperature gel permeation chromatography (GPC) measurement, and (2) a differential (LogM90 / LogM10) between a 90 percentile value (LogM90) and a 10 percentile value (LogM10) in the differential molecular weight distribution curve of the high density polyethylene (A) is less than 1.25.SELECTED DRAWING: Figure 1
Owner:DAI NIPPON PRINTING CO LTD

Silicon carbide crystal growth method

In silicon carbide crystal growth, this method eliminates the need for precise control of temperature gradients and gas flow paths, suppresses the occurrence of crystal defects and thermal distortion, and improves the efficiency of silicon carbide raw material utilization, thereby increasing the productivity of silicon carbide substrates and reducing manufacturing costs. [Solution] By sublimating the silicon carbide sublimation surface of the raw material substrate and applying gravitational acceleration to transport the silicon carbide growth surface of the growth substrate stably and uniformly, it is possible to form multiple silicon carbide growth layers simultaneously without requiring a temperature gradient. Furthermore, by preventing the silicon carbide raw material from leaking from the back surface of the growth substrate or from the gap between it and the raw material substrate, the utilization efficiency of the silicon carbide raw material is increased, thereby enabling improved productivity and reduced manufacturing costs.
Owner:CUSIC INC

Mask plate as well as evaporation alignment system, evaporation alignment method and evaporation method applying mask plate

The invention belongs to the technical field of semiconductors, and particularly relates to a mask plate, and an evaporation alignment system, an evaporation alignment method and an evaporation method using the mask plate. The mask plate comprises a mask plate body, alignment mark groups are arranged on the mask plate body, the alignment mark groups are used for recognition and alignment of an image acquisition device, and each alignment mark group comprises a first mark located on the front face, facing the evaporation source direction, of the mask plate body, and a second mark located on the front face, facing the evaporation source direction, of the mask plate body; the second mark is positioned on the back surface, facing the substrate, of the mask plate body; the first mark and the second mark coincide with each other in a direction in which the vapor deposition source and the substrate face each other. According to the invention, the double-sided mark design and the double-vision system are combined, so that the thermal deformation and parallax influence of the mask plate can be overcome, meanwhile, high-precision alignment is realized, and the material utilization rate is improved.
Owner:ANHUI SEMICON INTEGRATED DISPLAY TECH CO LTD

Double-channel rear light path light, machine and heat integrated structure of low-temperature infrared camera

The invention provides a dual-channel rear light path light, machine and heat integrated structure of a low-temperature infrared camera, which comprises a common lens barrel, a dichroic lens barrel, a medium wave lens barrel and a long wave lens barrel. The common lens barrel, the medium-wave lens barrel and the long-wave lens barrel are respectively coupled with the dichroic lens barrel. According to the invention, the problems in the prior art that how to reduce the thermal stress generated by the lens and the structural member and avoid the influence of the thermal stress generated by the lens and the structural member on system indexes are solved; the second problem is how to solve the problems that a light path assembly leaks heat outwards after low temperature, the temperature of a rear light path lens is uneven, thermal deformation is inconsistent, a refrigeration structure is complex, the requirement for cooling capacity is high, the assembly reference is indefinite, and the assembly positioning precision is poor; and 3, the structure redundancy is reduced, and the functionalization problem of the optical path structure in the aspects of optics and thermal control after low temperature is improved.
Owner:SHANGHAI INSTITUTE OF TECHNICAL PHYSICS CHINESE ACADEMY OF SCIENCES

Differential and vehicle

The utility model relates to a kind of differential and vehicle, its shell is fixedly connected by welding with main reduction gear, shell is constituted by two half shells and is respectively installed in the axial both sides end surface of main reduction gear. Fixed part for and half shell welding is equipped on the axial both sides end surface of main reduction gear, and positioning part spaced apart from fixed part welding area in radial direction is also equipped, and positioning part supports half shell when welding. The technical scheme will positioning part and welding area be spaced apart, avoid the influence of positioning accuracy by heat distortion generated in welding process, can effectively improve the assembly accuracy and overall performance of differential, ensure the reliable operation of differential.
Owner:SCHAEFFLER TECHNOLOGIES AG & CO KG

Float glass endoscopic monitoring and cooling device and use method

PendingCN121698558ALiquid layerMedicine
The invention discloses a float glass endoscopic monitoring cooling device and a using method, and relates to the technical field of endoscopic monitoring, the float glass endoscopic monitoring cooling device comprises an endoscopic assembly and a transmission piece, the transmission piece comprises an outer sleeve, a middle sleeve and an inner sleeve which are sequentially distributed from outside to inside, a hollow connecting rod is arranged in the inner sleeve, one end of the outer sleeve is provided with an integrated piece, and the integrated piece is connected with the transmission piece. And an injection piece is arranged on the integrated piece. Through the arrangement of the transmission part, the monitoring part and the balance part, the multi-layer design of the transmission part can be utilized to be matched with the injection part to complete the gas-liquid layered design, the circulating liquid cooling is ensured, and the continuous injection is performed by utilizing gas transmission, so that the temperature near the camera is well controlled by utilizing water cooling, and the safety of the camera is improved. And meanwhile, the design of uniform blowing can effectively prevent fog shadow and thermal deformation of a lens opening caused by high temperature, guarantee the definition of a monitoring picture, and prevent dust and impurities in the tin bath from being attached through gas flow.
Owner:HENAN SUNSHINE ELECTRIC TECH CO LTD +1

High-linearity variable gain amplifier

The invention discloses a high-linearity variable gain amplifier, and relates to the technical field of electronics, the high-linearity variable gain amplifier comprises a slide rheostat type gain assembly, a thermal deformation self-adaptive compensation assembly and four supporting legs, the slide rheostat type gain assembly adjusts the geometric dimension of a resistor by utilizing continuous physical sliding, so that a contact moves in a stepless manner along a linear resistor substrate, and the linear resistor substrate is subjected to self-adaptive compensation; continuous step-free change of gains is achieved, nonlinear distortion can be eliminated from the physical level, the oxidation environment can be isolated through the design of the multi-finger-shaped gold-plated beryllium copper electric brush in cooperation with nitrogen sealing, fluctuation of contact resistance is effectively controlled, meanwhile, the transmission chain composed of the stepping motor, the gear reduction box and the ball screw is utilized, and the transmission efficiency is improved. Rotation motion is converted into linear displacement of the contact, continuous fine adjustment of the position of the contact is achieved in cooperation with a precision guide rail, displacement precision is ensured through a grating ruler, and quantization errors of the high-linearity variable gain amplifier can be effectively solved.
Owner:HEFEI NORMAL UNIV +1

Aluminum alloy auto part defect identification and detection method based on image processing technology

The invention relates to the technical field of image processing, in particular to an aluminum alloy automobile accessory defect identification and detection method based on an image processing technology. The method comprises the following steps: deploying three groups of multispectral industrial cameras with complementary space angles at the upstream of a hub cooling conveying line, wherein each group of cameras synchronously collect hub surface distribution temperature and visible light-near infrared hub images; the surface of the hub is divided into three temperature intervals according to the hub surface distribution temperature, N groups of defect-free hub multi-angle images are collected in each temperature interval, a reference template set is generated based on the defect-free hub multi-angle images, and N is an integer not smaller than 50; and generating a real-time hub thermal distortion compensation image based on the hub surface distribution temperature, the visible light-near infrared hub image and the reference template set. According to the method, the capabilities of defect feature enhancement and accurate detection are highlighted, and especially the detection advantages of small defects are highlighted.
Owner:SHENZHEN YUELONG FIVE-AXIS PRECISION TECH CO LTD

Optical machine assembly deformation detection and optimization method for few low-power-consumption heating points

The invention provides an optical machine assembly deformation detection and optimization method for a small number of low-power-consumption heating points, and relates to the technical field of wavefront detection, and the method comprises the steps: obtaining temperature distribution and wavefront distortion data in a ground thermal vacuum environment, building a mapping relation between temperature features and wavefront distortion through machine learning, and generating compensation information; and acquiring temperature distribution data in real time during in-orbit operation, predicting wavefront distortion by using the model, and driving a wavefront modulator to compensate. The wave surface error caused by thermal distortion can be accurately predicted, and the in-orbit imaging quality of the optical system is improved.
Owner:XINGCHEN OPTOELECTRONICS TECH (SUZHOU) CO LTD

Heat-resistant wrought aluminum alloy and preparation method thereof

The invention provides a heat-resistant wrought aluminum alloy and a preparation method thereof. The heat-resistant wrought aluminum alloy comprises the following components in percentage by weight: 4.5%-5.2% of Cu, 0.5%-0.9% of Mn, 0.3%-0.7% of Mg, 0.25%-0.35% of Ti, 0.15%-0.25% of Sc and 92.6%-94.3% of Al. The heat-resistant wrought aluminum alloy comprises the following strengthening phases: an Al < 2 > Cu phase, an Al < 20 > Cu < 2 > Mn < 3 > phase, an Al < 2 > Cu < Mg > phase, an Al < 3 > Sc phase and an Al < 3 > Ti phase. According to the invention, the mass percent of each component in the wrought aluminum alloy is controlled within a specific range, so that a multi-stage strengthening phase can be formed in the aluminum alloy to improve the high-temperature strength and the structure stability of the wrought aluminum alloy.
Owner:XINJIANG JOINWORLD CO LTD