309results about How to "Improve design flexibility" patented technology

The invention provides a packaging substrate structure and a preparation method thereof. The preparation method comprises the following steps: providing a core plate layer; forming a multilayer substrate adding layer covering two opposite surfaces of the core plate layer and electrically connected with the core plate layer; providing an interconnection structure layer which comprises a bottom circuit layer, a bottom dielectric layer and a middle interconnection layer; pressing the interconnection structure layer in a preset area of the substrate adding layer in an inverted manner to obtain a required substrate structure layer; solder mask layers are formed on the two opposite faces of the substrate structure layer, contact holes are formed in the preset positions of the solder mask layers, and at least one contact hole exposes the conductive part of the interconnection structure layer. According to the invention, packaging with finer lines, lighter and lighter weight and higher line density can be realized, and signal transmission loss can be substantially reduced at the same time. Besides, the packaging substrate structure has high design flexibility, and the thickness and the circuit density of the interconnection structure layer can be accurately controlled by adjusting the thickness, the number of layers and the circuit design of each dielectric layer and each circuit layer so as to meet specific packaging requirements.

The invention provides an intelligent photocuring 3D printing model optimization method, and relates to the technical field of photocuring 3D printing, and the method comprises the following steps: obtaining a 3D printing model file uploaded by a user; analyzing geometric information in the model file, and extracting a triangular grid structure, normal vector information and a surface area; key feature areas of curved surfaces, corners and edges in the model are identified, printing parameter data are collected, and a target model summary file is generated; an optimization printing target is defined, an optimization model is generated based on the generative adversarial network, model quality is evaluated through a discriminator network, a multi-target optimization result is analyzed, and an optimal balance point among different targets is found; and testing the optimized model and the printing parameters by using virtual reality, and performing self-adaptive correction according to a simulation test result to adjust to the optimal printing parameters. According to the method, the geometric features and the material attributes of the 3D model are automatically analyzed, potential weaknesses in the model are identified, and the 3D printing model is intelligently optimized.

The present invention discloses a modular joint of a collaborative robot with a compact structure, which is connected in sequence: a joint housing; a joint output flange; a low-speed wire protection tube connected to the joint output flange; a harmonic reducer connected to the joint output flange and the joint housing; a motor assembly, including a stator and a rotor; a motor shaft connected to the motor rotor, one end of which is connected to the input end of the harmonic reducer; a brake assembly, which is a magnetic friction type, locks when the power is off, and opens when the power is on, and is connected to the motor shaft. Compared with the latch-type brake, it is safer to stop in an emergency and will not bend the stop pin; a motor-end encoder assembly; and a joint-end encoder assembly. The encoder code disc at the motor end of the present invention is concentrically arranged with the encoder code disc at the joint end, and the encoder reading head at the motor end is integrated with the encoder reading head at the joint end, so that the axial space of the joint is compact, the integration is high, and the wiring space is large for easy operation. At the same time, the modular joint of the present invention also has the characteristics of high rigidity and large load-to-weight ratio.

The invention belongs to the technical field of optical fiber communication, and relates to an eight-mode mode division multiplexer based on a multi-core optical fiber, which comprises a substrate material and a central few-mode fiber core, a high-refractive-index ring is arranged in the central few-mode fiber core; the peripheral single-mode fiber core comprises a first single-mode fiber core used for carrying out LP11a mode conversion on the central few-mode fiber core, a second single-mode fiber core used for carrying out LP31 mode conversion on the central few-mode fiber core, a third single-mode fiber core used for carrying out LP11b mode conversion on the central few-mode fiber core, and a fourth single-mode fiber core used for carrying out LP21b mode conversion on the central few-mode fiber core; the fifth single-mode fiber core is used for carrying out LP12 mode conversion on the central few-mode fiber core; the sixth single-mode fiber core is used for carrying out LP21a mode conversion on the central few-mode fiber core; and the seventh single-mode fiber core is used for carrying out LP02 mode conversion on the central few-mode fiber core. The invention has the characteristics of large number of conversion modes, high space utilization rate, low insertion loss, high flux and the like.

The invention discloses a storage circuit and a random access memory. The storage circuit comprises a control chip and a storage chip, wherein the storage chip is connected with the control chip; wherein one of the control chip and the storage chip comprises a redundancy repairing module, and the control chip is configured to obtain information of a damaged storage unit in the storage chip according to a preset triggering requirement; the redundancy repair module is configured to store the information of the damaged storage unit and send a redundancy replacement address to the storage chip based on the information of the damaged storage unit in response to the storage operation instruction so as to execute the corresponding storage operation. By means of the mode, the storage circuit can repair the damaged storage unit in the storage chip in real time through the redundancy repair module in the use process of the random access memory, so that the stability of the random access memory is improved, and the possibility that the random access memory reads and writes data mistakenly is reduced.

The invention provides an electronic device, a ceramic substrate and a preparation method thereof, and relates to the technical field of semiconductors. The ceramic substrate comprises a ceramic base body and a liquid channel layer, the liquid channel layer is arranged in the ceramic base body, the liquid channel layer and the ceramic base body are integrally sintered and formed, the liquid channel layer comprises a liquid channel, the liquid channel is used for containing a cooling medium, and the liquid channel extends in the ceramic base body along a three-dimensional space path. The preparation method of the ceramic substrate comprises the following steps: preparing slurry containing ceramic powder, preparing a sacrificial template matched with a target liquid channel in shape, pouring the slurry to coat the sacrificial template, filling a mold with the slurry to obtain a ceramic blank, removing the sacrificial template to form a hollow channel in the ceramic blank, and sintering to form the ceramic substrate with the liquid channel. The electronic device comprises the ceramic substrate, a component and a liquid cooling circulation system.

The invention provides a method and a system for extracting a central axis and a shape of a pipe. The system comprises a file import module which receives and processes a workpiece drawing in a 3D format uploaded by a user; the data analysis module analyzes the imported workpiece drawing in the 3D format; the central axis segment extraction module identifies and extracts a central axis segment related to the pipe; the central axis construction module processes the extracted central axis segment; the shape data extraction module defines a data structure of a pipe shape and converts the constructed central axis into the data structure for representation; the graph display module is used for displaying an original 3D workpiece drawing and a processed graph only containing a pipe part; and the output module outputs the processed central axis shape data in a format suitable for subsequent processing. According to the method, direct importing of the 3D format file is supported, a new algorithm and technology are introduced, so that the pipe forming system can directly read and process the 3D CAD file, and the step of converting a 3D model into a 2D drawing is omitted.

The utility model relates to the technical field of keyboard backlight modules, in particular to a MINI keyboard backlight module, and solves the technical problems that the whole FPC (Flexible Printed Circuit) manufacturing process of the backlight module in the market in the prior art is relatively complicated, so that the whole cost of the keyboard backlight module is increased when a whole FPC lamp panel is used, and the manufacturing cost of the keyboard backlight module is increased. Meanwhile, the whole FPC lamp panel is limited by the size of production equipment in the manufacturing process, so that the length and the width of the FPC lamp panel can not meet the requirements of certain specific applications, and the practicability of the keyboard backlight module is low. The MINI keyboard backlight module comprises a shading film, a light guide plate, a reflecting film and a lamp panel which are sequentially arranged from top to bottom, the shading film is located on a pattern part on the surface of the light guide plate, the shading film is matched with the reflecting film in boundary dimension, and the lamp panel is arranged at the bottom of the reflecting film. According to the utility model, the effects of reducing the cost and improving the brightness are achieved, and the requirements of some specific applications are met. And the design flexibility and expandability of the keyboard backlight module are improved.

In order to solve the problem of a local optimal solution in the prior art, the invention provides a welding beam design optimization method and device based on a Bayesian optimization algorithm of variable selection and a medium. The optimization method comprises the following steps of building a welding beam design problem model, building a Gaussian process model, selecting variables through a roulette, optimizing a collection function and carrying out iterative optimization. The method has the beneficial effects that 1, the problem of local optimum is solved, and the Bayesian optimization can more effectively search a global optimal solution in a global range by establishing a Gaussian process model of a target function and combining an expectation improvement criterion; and 2, computing resources are saved, the computing efficiency is improved, and the next most potential point is intelligently selected through variable selection and acquisition function optimization for fitness value calculation, so that the number of evaluation times in the design process is reduced, the computing cost is saved, and the number of iterations is also reduced. And 3, the design flexibility is higher.

The invention discloses an inertial rotary piezoelectric motor based on a piezoelectric driving unit and a control method, and belongs to the technical field of piezoelectric driving. The piezoelectric driving unit and a rotary unit are rotatably arranged on a fixed base, a friction plate is arranged at the front end of the piezoelectric driving unit, and a pre-tightening force structure is fixed on the fixed base; the two piezoelectric driving units are arranged on the two sides of the rotating unit respectively, the two sets of identical piezoelectric driving units are adopted, alternate and coordinated movement of the two sets of piezoelectric driving units is controlled by regulating and controlling excitation voltage applied to the piezoelectric driving units, and then the rotating unit is pushed to move. Due to the alternate coordinated movement of the two groups of piezoelectric driving units, the output speed and the loading capacity of the piezoelectric motor are greatly improved, and the displacement hysteresis of single-step stepping of the inertial piezoelectric motor is greatly reduced. Therefore, the output performance of the rotor is improved, the load of the rotor is greatly improved compared with that of a single-path driving motor, and the consistency of forward and reverse movement of the rotor is also improved due to the symmetrical design.

The invention provides a preparation method of fine low-oxygen spherical Ti-based high-entropy alloy powder, and relates to the technical field of spherical titanium-based alloy powder. The preparation method comprises the steps of raw material selection and treatment of the wire, preparation of the pre-alloyed wire, preparation of the titanium-based high-entropy alloy wire, treatment of the titanium-based high-entropy alloy wire, establishment of a gas system, high-frequency induction preheating, radio frequency plasma smelting and atomization pulverization which are carried out in sequence. Through multiple wire twisting, multiple continuous hot drawing, diffusion homogenization annealing, high-frequency induction preheating, radio frequency plasma smelting and atomization powder preparation, the Ti-based high-entropy alloy wire with uniform component distribution can be directly prepared at a low temperature, then the Ti-based high-entropy alloy fine powder with low oxygen content and uniform component distribution is prepared, and the Ti-based high-entropy alloy fine powder is suitable for additive manufacturing and has good application prospects. The method is high in flexibility, simple to operate, wide in application, low in cost and very suitable for large-scale industrial production.

The invention discloses a multi-degree-of-freedom piezoelectric motor stator structure, a piezoelectric motor and a driving method, and different voltage signals are applied to piezoelectric patches around a stator to excite first-order extension and multi-order bending modal motion, so that a driving foot of the stator generates elliptical motion, and further a mover is pushed to move. Based on the two-degree-of-freedom piezoelectric stator, the two-degree-of-freedom piezoelectric stator is suitable for plane multi-degree-of-freedom driving and rotation multi-degree-of-freedom driving, and the applicable range of the piezoelectric stator is greatly widened; and the two driving modes are simple in structure assembly design, and are suitable for a microminiature multi-degree-of-freedom precision driving system. As the motor can meet the driving requirements of planar and rotary driving occasions, the assembly design requirements of the motor are greatly reduced, and decoupling movement in different directions can be realized; according to the multi-degree-of-freedom driving mode based on the two-degree-of-freedom piezoelectric stator, the design flexibility is high, and the performance of the motor is effectively improved.

The invention discloses a sweeping robot convenient to clean. The sweeping robot comprises a robot body, and a detachable telescopic adjusting mechanism is arranged on the robot body; the invention relates to the technical field of sweeping robots. According to the sweeping robot convenient to clean, through the arrangement of the telescopic adjusting mechanism, the cleaning radius of the bristles is adjusted, the cleaning range of the bristles on the ground is enlarged, dust and impurities on the periphery of the robot body can be efficiently gathered to the bottom of the robot body to be absorbed, and the cleaning efficiency on the ground is greatly improved; meanwhile, the telescopic adjusting mechanism can be rapidly assembled on the robot body through cooperation of an inserting rod and an inserting base and can be rapidly installed on the sweeping robot without the cleaning range, the telescopic adjusting mechanism and the movable sweeping assembly can be timely dismantled during sweeping in a narrow space, and the sweeping robot can conveniently pass through; when the cleaning range needs to be enlarged, the telescopic adjusting mechanism and the movable cleaning assembly can be installed in time, and the cleaning efficiency is improved.

The invention discloses a surface plasmon resonance radiation cooling-heat conduction-liquid film evaporation coupling heat dissipation multi-layer co-construction micro-nano structure and a manufacturing method and application thereof, and belongs to the technical field of micro-nano manufacturing and functional structure surfaces, and the multi-layer co-construction micro-nano structure is composed of three layers of structures; the bottom layer structure is a substrate; the top of the bottom layer structure is a near-infrared wavelength scale grating structure; the middle-layer structure is a high-thermal-conductivity diamond film and covers and fills the bottom-layer structure; the top of the middle-layer structure is of a lyophilic micro-nano structure; the top layer structure is a silicon dioxide film. Radiation cooling, efficient heat conduction and liquid film evaporation / boiling phase change heat transfer are coupled, the heat transfer and heat dissipation level is greatly improved, additional external energy input is not needed, and positive significance is achieved for research and development of a novel high-performance and zero-energy-consumption radiator, promotion of development of a high-heat-flow-density advanced system and improvement of the ecological environment.

The invention discloses an integral sliding mode current control method and system of an AC-DC converter for an electric vehicle, and relates to the technical field of integral sliding mode current control of the AC-DC converter for the electric vehicle, and the method comprises the steps: employing an improved buffeting weakening nonlinear reaching law integral sliding mode control strategy, and carrying out the tracking control of an input current. According to the method, by using an integral sliding mode control strategy and nonlinear reaching law adjustment, the accuracy of current control and the robustness of the system are ensured, meanwhile, the dynamic response of the system is optimized, and the chattering phenomenon is reduced.

The embodiment of the invention provides a tunable resonant cavity and a laser, and the tunable resonant cavity comprises a micro-ring which comprises an arc waveguide part and a straight waveguide part; a heat module is arranged on the straight waveguide part and is used for adjusting the refractive index of the micro-ring; the thermal isolation grooves are provided with Bragg grating structures and are located on the two sides of the thermal module; and the bent waveguide comprises a first bent waveguide and a second bent waveguide, and the first bent waveguide and the arc waveguide part have a first coupling area and a second coupling area respectively.

A relay includes a contact cavity, a contact assembly, a breaking assembly, and a retaining member. The contact cavity includes a yoke plate. The contact assembly includes a stationary contact and a movable member, the movable member including a movable contact and a push rod member, the movable contact mounted on the push rod member, the push rod member movable relative to the yoke plate to move the movable contact to contact or separate from the stationary contact, the movable contact and the stationary contact being capable of forming at least one conduction path when the movable contact contacts the stationary contact. The breaking assembly includes an impactor, the breaking assembly configured to release the impactor in response to an activation signal to impact the movable member to break at least one of the at least one conduction path. The retaining member is connected to one of the yoke plate and the push rod member, the retaining member configured to cooperate with the other of the yoke plate and the push rod member to retain the push rod member at a predetermined position when the breaking assembly breaks at least one of the at least one conduction path.

The present invention discloses a particle intermittent applying device, comprising a particle applying part, which is arranged on the upper side of a moving filament belt, the particle applying part comprising a particle control roller and a particle applying roller, the particle control roller is coaxially arranged outside the particle applying roller and can rotate relative to the particle applying roller, the particle applying roller is provided with a particle applying roller blanking hole at the bottom, the particle control roller is evenly distributed with a plurality of particle control roller blanking holes, the particle control roller rotates so that the particle control roller blanking holes are sequentially connected with the particle applying roller blanking holes, and the particles in the particle control roller fall onto the filament belt at intervals. The device can automatically and efficiently realize the intermittent feeding of particles during the normal movement of the filament belt, and can apply particles to the filament belt at intervals by means of gravity, air pressure, etc., so as to complete the processing and forming of the acetate fiber particle intermittent filter rod at one time.

The invention discloses an assembly type parameterization design system and method for a low-temperature circulation rapeseed dryer, and relates to the technical field of mechanical design. The system comprises a tempering layer design module, a drying layer outer design module, a drying layer inner design module, an elevator design module, a supporting steel frame and grain discharging mechanism design module, a ladder and guardrail design module, a general assembly module, a model design module and a file storage module. The method comprises the steps that a required design model is selected, overall height parameters, loads and the number of groups of the dryer are given, and a system automatically stores and operates a recommendation algorithm to update layer number design parameters; selecting a design mode; designing parts and sub-assemblies according to the selected mode; updating the sketch and generating components; after component design is completed, general assembly design is carried out, and a dryer general assembly body is automatically generated; storing the file; and generating and storing a two-dimensional diagram. The design process of the dryer is effectively standardized, the design time of the dryer is shortened, and the design efficiency and quality are improved.

This application discloses an inductor structure and its fabrication method, equipment, and dielectric. The inductor structure includes an inductor winding, a magnet, and a metal frame. The magnet encloses the inductor winding to form a cuboid inductor body. The metal frame covers the top and / or bottom of the cuboid inductor body and connects to the inductor winding terminals that are extended and bent to the top and / or bottom of the cuboid inductor body. By adding a metal frame to the inductor surface, an inductor structure with electrical interconnect design is achieved, which is compatible with mature molding inductor manufacturing methods and semiconductor processes. Advanced system-in-package (SIIP) requires higher dimensional accuracy than general inductor manufacturing capabilities, limiting the flexibility of package design. The electrode reconfiguration method provided by this invention can solve this accuracy mismatch and improve design flexibility.

The utility model provides a rolling brush, a rolling brush assembly and cleaning equipment, and belongs to the technical field of cleaning equipment. The rolling brush comprises a rolling brush body, the rolling brush body comprises a fixed end and a free end which are arranged in the axial direction, and the fixed end is used for being connected with the cleaning equipment. The two ends of each first cleaning piece extend towards the fixed end and the free end of the rolling brush body respectively, the multiple first cleaning pieces are arranged on the peripheral wall of the rolling brush body at intervals, and the first cleaning pieces are rubber brushes. According to the rolling brush, by arranging the free end and the fixed end, hair can be conveniently removed from the free end of the rolling brush, and then the problems that an existing rolling brush is not prone to removing hair, and hair is prone to being wound are solved.

The application relates to a planetary shaft structure in the technical field of differentials, which comprises a left half shaft gear, a right half shaft gear arranged opposite to the left half shaft gear, and four planetary gears arranged in a cross shape between the left half shaft gear and the right half shaft gear and meshed with the two gears, wherein a main support is arranged through the coaxial two planetary gears of one opposite arrangement, an auxiliary support is arranged through the coaxial two planetary gears of the other opposite arrangement, the two auxiliary supports are respectively arranged on the two sides of the main support, and each auxiliary support is connected with the main support through a positioning piece; the whole planetary shaft structure is simple and clear, the setting of a planetary support is cancelled, the self-strength and mounting strength of the left half shaft gear, the right half shaft gear and the four planetary gears are improved, the design flexibility of the whole planetary shaft structure is improved, and the design complexity and cost of the differential assembly are reduced.

The present invention discloses an airtight packaging component structure of an integrated lens, including a component housing, a cover plate, a lens, a primary aperture, a secondary aperture, a filter, a chip module, and an electrode plate. A two-stage aperture is arranged in the component, wherein the secondary aperture is close to the chip surface and is used to fix the filter. The lens also serves as a component window, which is fixed to the cover plate by welding or epoxy glue, and the chip module and the lens are aligned by optical alignment equipment. After all parts are assembled, the component is filled with inert gas for protection, and airtight welding is completed. This type of component can be used at room temperature or low temperature. The lens serves as a component window, which can not only meet the requirements of airtight packaging, but also ensure the requirements of high-precision optical alignment. At the same time, the multi-stage aperture is integrated in the component, which can effectively reduce the influence of background radiation and stray light in the chip field of view.

The invention discloses a diaphragm compressor diaphragm cavity molded line generation method based on a brachistochrone and a product. The diaphragm cavity molded line generation method comprises the steps that an XOY coordinate system is established, the circle centers of the first rolling circle S1 and the second rolling circle S2 are located above and below the X axis respectively, the first rolling circle S1 and the second rolling circle S2 are tangent to the X axis, and the two rolling circles run along the X axis at the angular speed omega and keep tangent to the X axis oppositely; a track ONQ of a feature point located at the original point O at the initial moment on the rolling circle along with the movement of the first rolling circle S1 is used as a film cavity generation line, and a cycloid OMK is formed along with the movement of the second rolling circle S2; and the mold cavity radius, the mold cavity deflection and the ratio of the two generated rolling radiuses are defined, a series of mold cavity molded lines are established, the series of mold cavity molded lines are preferentially selected according to conditions, and the mold cavity molded lines meeting the requirements are obtained. The diaphragm compressor diaphragm cavity molded line generation method provided by the invention is a multi-parameter molded line control method with an adjustable diaphragm cavity molded line characteristic inclination angle and an adjustable ratio of two generated rolling radiuses, and has higher design flexibility.

The invention discloses a resonance regulation and control system based on symmetry control. The resonance regulation and control system comprises a low-symmetry metal spiral structure and an excitation microstrip circuit. The low-symmetry metal spiral structure is composed of four metal spiral arms, and the four metal spiral arms have two different lengths. The excitation microstrip circuit sequentially comprises a metal strip, a dielectric substrate layer and a metal ground plane; the resonator introduces an electromagnetic resonance mode excited by a first-order current through the asymmetric design of a low-symmetry metal spiral structure, and realizes the regulation and control of resonance characteristics.

An integrated circuit structure includes a substrate, a bottom nanostructure transistor, and a top nanostructure transistor. The bottom nanostructure transistor is arranged above the substrate and comprises a first channel layer, a first gate structure and a plurality of first source / drain epitaxial structures. The first gate structure surrounds the first channel layer. The first source / drain epitaxial structures are arranged on two opposite sides of the first channel layer. The top nanostructure transistor is over the bottom nanostructure transistor and includes a second channel layer, a second gate structure, and a second source / drain epitaxial structure. The second channel layer is over the first channel layer. The second gate structure surrounds the second channel layer. The bottom surface of the second gate structure is coplanar with the bottom surface of the first gate structure. The second source / drain epitaxial structure is disposed on two opposite sides of the second channel layer.

The utility model belongs to the technical field of electronic atomization, and provides a light-emitting assembly and an electronic atomizer thereof, the light-emitting layer, the light guide layer and the light uniformizing layer are arranged in a stacked mode, light emitted by the light-emitting layer sequentially passes through the light scattering effect of the light guide layer and the light uniformizing layer, and the uniformity of the light emitted outwards by the light-emitting assembly is ensured. Through the guiding and uniform dispersing effects of the light guide layer and the light equalizing layer on the light emitted by the light emitting part, the uniform light emitting effect is achieved, the phenomenon that the local brightness of the area where the light emitting part is located is highlighted is effectively avoided, and the phenomenon that lamp beads are exposed is avoided.

The application discloses a display panel, a preparation method thereof and a display device. The display panel comprises a substrate, a pixel structure and a scanning driving circuit. The pixel structure is electrically connected with the scanning driving circuit. In the direction perpendicular to the plane where the substrate is located, the pixel structure and the scanning driving circuit are located on opposite sides of the substrate. The technical scheme of the embodiment of the application can improve the screen-to-body ratio of the display panel and the design flexibility of the scanning driving circuit.

The invention discloses a settling filter for purifying tap water in a laboratory. The settling filter comprises a mixing tank and a settling filter assembly, the liquid inlet end of the mixing tank is connected with a laboratory tap water pipeline, and the liquid outlet end is connected with the water inlet end of the settling filter tank assembly through a pipeline; the mixing tank is further connected with a flocculating agent adding assembly through a pipeline, the sedimentation filter tank assembly comprises a long-strip-shaped tank body, a suspended filter bed, a plurality of rows of inclined plates distributed in parallel at intervals and a plurality of sedimentation hoppers are sequentially arranged in the tank body from top to bottom, and sludge discharge ports of the sedimentation hoppers are connected with a sludge treatment assembly through pipelines. A water inlet and a water outlet are formed in the tank body, the water inlet is located between the inclined plate and the precipitation hopper, the water outlet is located above the filter bed, and the water outlet is connected with a clear water treatment assembly through a pipeline. The device is compact in structure, can effectively improve the purification efficiency of tap water in a laboratory, is stable in water outlet, and effectively solves the problems of hardening and blockage of a filter bed.

The present disclosure relates to a power module comprising: a first substrate formed by stacking a plurality of layers in a first axis direction; a semiconductor chip electrically connected to the first substrate; a printed circuit board connected to the semiconductor chip and including at least one step portion having a reduced thickness smaller than a thickness of the surrounding region in the first axis direction; and at least one metal block mounted on the at least one step portion in the first axis direction and electrically connected to the first substrate.