21 results about "Geometric configuration" patented technology

The invention relates to the technical field of ball valve design and simulation, in particular to a three-dimensional simulation design method and system for a ball valve. The method comprises the following steps: performing reference geometric construction based on a ball valve design specification, and performing geometric parameterization to obtain an initial geometric configuration; importing the initial geometric configuration into a finite element analysis platform, and endowing material attributes to obtain a finite element mesh model; performing ball valve working stress analysis on the finite element mesh model to obtain a stress-strain field; performing model fluid domain grid division according to the initial geometric configuration and the stress-strain field to obtain a fluid domain grid; valve opening change setting is conducted on the fluid domain grids, and a CFD calculation model is obtained; internal flow field transient simulation of the ball valve under different opening degrees is conducted on the CFD calculation model, and fluid dynamic parameters are obtained. The dynamic characteristics of the valve under the complex working conditions are accurately captured, and the working performance of the valve under different working conditions is improved.

The upper / lower deflection of the wing variable-camber structure based on the fishbone imitating concept and the zero-Poisson-ratio lattice structure is realized by rotating and driving the symmetrically mounted eccentric levers. Every time the eccentric lever rotates by a certain angle, the wing variable camber structure presents a corresponding geometric configuration. And according to the geometrical relationship, the position of the web and the geometrical configuration of the wing variable camber structure when the eccentric lever rotates by different angles are solved. Work done by rotation of the eccentric lever is equal to strain energy stored by corrugation deformation of the upper surface and the lower surface of the wing variable-camber structure, and the driving torque-rotation angle relation of the wing variable-camber structure is further obtained.

The present invention discloses an optimal geometric configuration method for RSS source positioning of a drone cluster and its application. The method comprises the following steps: performing RSS measurement on a drone cluster under flight domain constraints to establish an optimal geometric configuration problem; in a hovering state, without considering flight altitude and horizontal distance, decomposing the optimal geometric configuration problem into conventional and unconventional cases according to framework theory, respectively establishing the optimal sensor-target geometry; then, considering domain constraints, determining the optimal geometric configuration scheme for the drone cluster in the hovering state through geometric and algebraic analysis; in low-speed and high-speed flight states, based on the optimal geometric configuration scheme in the hovering state, applying the sensor equivalence placement criterion and considering domain constraints, determining the optimal geometric configuration scheme for the drone cluster in low-speed and high-speed flight states. The method can be used to refine prior estimation results. The present invention greatly improves the accuracy of estimation results for RSS source positioning of drone clusters.

The present invention relates to a fatigue test simulation part design method for simulating a multi-axial stress state containing a compressive stress component at a dangerous part of a wheel disc, and the steps are as follows: (1) obtaining a geometric model and material parameters of the wheel disc and determining the load conditions; (2) establishing a finite element model and calculating and obtaining the stress distribution of the wheel disc under actual working conditions; (3) optimizing the stress distribution at the notch by changing the notch shape; (4) further optimizing the stress distribution at the notch by changing the radius of the arc boss, the thickness of the plate and other geometric dimensions; (5) on the basis of step (4), adopting a multi-segment arc transition for the part where the geometric configuration of the three-dimensional plate changes more drastically; (6) repeatedly changing the initial value of the optimization parameter for multiple times to carry out repeated optimization to avoid falling into a local optimum. (7) after the geometric configuration of the three-dimensional plate is determined, clamping sections are designed at both ends. The simulation part designed by the present invention can generate compressive stress under tensile load, has lower requirements for the test, and is more applicable.

The invention relates to a multi-piece multi-dimensional functionally graded material optimization method, device, equipment and medium, and belongs to the technical field of functionally graded materials.According to the multi-piece multi-dimensional functionally graded material optimization method, a multi-piece three-dimensional functionally graded material porous structure is constructed based on a B spline or NURBS; the constructed PHT-AIGA is adopted to carry out self-adaptive solution and iterative refinement on the geometric configuration of the porous structure of the multiple pieces of three-dimensional functionally graded materials, a numerical analysis template grid meeting an error threshold value is obtained, and the PHT-AIGA comprises geometric analysis such as a PHT spline base, a super-convergence recovery base error estimation algorithm and a Doffler marking strategy; according to the method, a multi-objective optimization function is constructed with the minimum mass and the maximum free vibration fundamental frequency as optimization objectives, iterative solution is conducted on the multi-objective optimization function, optimized design variables are obtained, and the precision and efficiency of multi-objective optimization of the multiple pieces of three-dimensional functionally graded materials are improved.

The invention discloses a cross-scale experimental method for regulating and controlling a high r value of ferrite austenite dual-phase steel, which comprises the following steps: (1) designing a multi-orientation sample: (1.1) geometric configuration: stretching the sample in three directions: designing an I-shaped sample based on the rolling direction, the transverse direction and the 45-degree direction of a plate; (1.2) a texture strengthening structure; (2) a cross-scale experiment method: (2.1) two-stage controlled rolling and controlled cooling simulation; (2.2) carrying out a multi-axis strain path experiment; and machine learning optimization: based on a random forest algorithm, inputting parameters such as annealing temperature, cooling speed and phase proportion and outputting r value and delta r, generating a process-performance Pareto leading edge, and recommending an optimal solution set. By precisely regulating and controlling the biphase texture, the phase interface morphology and the grain gradient distribution, the mean value of the r value is larger than or equal to 1.8, the anisotropy delta r is smaller than or equal to 0.3, and the deep drawing performance limit is broken through.

The present invention discloses a spatial liquid drainage and exhaust structure and method based on local temperature gradient and geometric configuration in the field of droplet separation technology under a microgravity environment, wherein the contact surface between the cover plate and the mother liquid is arranged as a conical surface, and an outlet for discharging bubbles and / or droplets outward is arranged at the top of the conical surface, and the geometric curvature gradient formed by the conical surface is used to guide the moving direction of the bubbles and / or droplets; a heating plate is arranged on the outer side of the cover plate at the side of the outlet, and the heating plate is used to heat the cover plate to form a temperature gradient from the outlet to the edge of the cover plate; the mother liquid will generate thermal capillary force under the temperature gradient to drive the bubbles and / or droplets in the mother liquid to move along the conical surface toward the outlet.

The application discloses a kind of end effector support rod structure automatic generation method and device.Therein, the method includes: determining the spatial position information of the reference component of end effector in the three-dimensional model of the end effector, wherein the reference component includes main rod and suction disc;Based on the spatial position information, the geometric configuration relationship model of the auxiliary component connected with the reference component is established, wherein the auxiliary component includes support rod, pipe clamp head, main rod joint and suction disc adapter;Based on the geometric configuration relationship model, the installation pose of the auxiliary component is determined, and based on the installation pose, the support rod structure of the end effector is generated.The application solves the technical problem that assembly adjustment is complicated due to the multiple degrees of freedom of parts in the existing end effector design technology.

An electronic device with a deformable housing supports at least one display and includes sensors to detect the device's geometric configuration. Processors, operable with the sensors, present content with visual indicia that identify the deformed geometry at which the content was originally created, unless the current device configuration matches the original geometric configuration. The visual indicia may include instructions for adjusting the device to match the original geometry, enhancing the playback experience. The content's originating geometric configuration can be stored as metadata, allowing for accurate reconstruction during playback. This system addresses the challenges of screen recording and playback on foldable devices by incorporating the device's folding angle information into the screen recording process, thus ensuring playback reflects the original recording conditions.

The application discloses a non-rotation type integral inertial particle separator design method, which comprises the following steps: S1, establishing an XY coordinate system and determining a plurality of key nodes on a meridian plane flow passage profile and coordinates of the key nodes; S2, setting a slope value for each key node; S3, calculating a two-degree-of-freedom adjustable curve between two key nodes which need to be connected into a line; S4, calculating the two-degree-of-freedom adjustable curve between all the key nodes which need to be connected, and sequentially connecting to form a meridian plane flow passage profile of the non-rotation type integral inertial particle separator; and S5, rotating the meridian plane flow passage profile by 360 degrees around the x-axis of the coordinate system to generate a solid of revolution, and obtaining a three-dimensional geometric configuration of the non-rotation type integral inertial particle separator. i,1 i,2 The application adopts a two-degree-of-freedom adjustable curve function, and the shape of the curve between any adjacent key nodes can be freely changed by changing free parameters O i,1 i,2 , O i,2 , so that the design and research of the parameterization of the non-rotation type integral inertial particle separator are more flexible and rapid.

The invention discloses a design method of a non-rotation type integral inertia particle separator, which comprises the following steps: S1, establishing an XY coordinate system, and determining a plurality of key nodes on a meridian plane flow channel profile and coordinates of the key nodes; s2, setting a slope value for each key node; s3, calculating and generating a two-degree-of-freedom adjustable curve between two key nodes which need to be connected into a line; s4, calculating to obtain a two-degree-of-freedom adjustable curve between all the key nodes needing to be connected, and sequentially connecting to form a meridian plane runner molded surface of the non-rotation type overall inertia particle separator; and S5, rotating the meridian plane flow channel molded surface by 360 degrees by taking the x axis in the coordinate system as a rotating shaft to generate a rotating body, and obtaining a three-dimensional geometric configuration of the non-rotation type integral inertial particle separator. According to the method, a two-degree-of-freedom adjustable curve function is adopted, the shape of a curve between any adjacent key nodes can be freely changed by changing free parameters Oi, 1 and Oi and 2, and parameterization design research of the non-rotation type overall inertial particle separator can be more flexibly and rapidly carried out.

This application discloses a method, apparatus, equipment, and medium for optimizing the geometric layout of an aircraft under the influence of aerodynamics and aero-thermal coupling, relating to the field of aircraft layout design technology. The method involves determining the geometric shape and parameters corresponding to the geometric configuration, calculating the geometric deformation of the configuration under steady-state conditions, determining the deformation location and deformation value of the aircraft under the influence of aerodynamics and aero-thermal coupling, characterizing the deformation value to obtain a geometric representation, sampling the geometric parameters and deformation values ​​to obtain geometric configurations under different combinations of geometric parameters and deformation, constructing an aerodynamic performance prediction model, inputting the current geometric parameters and current geometric representation into the aerodynamic performance prediction model, outputting predicted aerodynamic performance indicators, selecting the optimal predicted aerodynamic performance indicators, and using the corresponding optimal geometric parameters to determine the optimized geometric layout shape of the aircraft. This solves the uncertainty optimization problem in aircraft aerodynamic layout design and improves the robustness of aircraft aerodynamic performance.

A heating, ventilation, and / or air condition (HVAC) system includes a heat exchanger with at least one spring tube wound in a geometric configuration formed around a geometric axis. A passage through the spring tube is configured to transport a working fluid therethrough to facilitate heat exchange between the working fluid and air directed over an exterior of the at least one spring tube.

A method and a control device for environment geometry reconstruction based on phaseless channel features, the method comprising: obtaining phaseless channel features corresponding to multiple observations; extracting multipath components for the phaseless channel features of each observation; obtaining a distance difference measure of geometric distance and propagation distance in each observation according to geometric configuration information and the multipath components; performing an aggregation operation on each voxel based on a soft distance matching kernel and a power weight according to the multipath components and the distance difference measure to obtain an aggregation score corresponding to each voxel; obtaining an angle support range corresponding to each voxel according to the geometric configuration information, the distance difference measure and a preset truncation radius; and performing voxel occupancy determination and geometry reconstruction according to the aggregation score and the angle support range to obtain a binary geometry reconstruction result. The method solves the problems of phase dependence, improper aggregation operation unit, lack of distance error tolerance and inability to distinguish between real scattering and artifacts in the prior art.

The invention provides a method for determining an S-shaped rolling curve of bidirectional rolling of a large ring piece, electronic equipment and a storage medium, which are applied to the technical field of ring piece rolling forming machining and comprise the following steps: step 1, establishing geometric configurations and coordinate systems of a ring blank section before deformation and a ring piece section after deformation in the bidirectional rolling process of the ring piece; step 2, establishing an equation of an S-shaped rolling curve; 3, determining boundary conditions of the S-shaped rolling curve equation; 4, the height h0 and the wall thickness b0 of the ring blank, the height hf and the wall thickness bf of the ring piece and the S-shaped rolling curve coefficient k are determined; 5, solving an undetermined coefficient in the S-shaped rolling curve equation; and 6, drawing an S-shaped rolling curve graph. The motion and rolling process of the rollers can be coordinated and controlled, radial and axial coordinated deformation of the ring piece in the two-way rolling process is achieved, and the stability of the rolling process is improved.

The invention discloses a pseudo-satellite system geometric accuracy factor calculation method based on geometric configuration, and belongs to the field of multi-pseudo-satellite navigation and communication. The method specifically comprises the following steps: aiming at a pseudo satellite navigation positioning system formed by n randomly distributed pseudo satellites, improving calculation of geometric accuracy factors of the pseudo satellite navigation positioning system; then, respectively expressing and expanding tr [(GTG) *] and GTG of the geometric accuracy factor by utilizing a determinant; respectively expressing and expanding tr [(GTG) *] and GTG by utilizing a matrix theory, a vector and analytic geometry, and finally calculating a final improved GDOP; and for the pseudo satellite system with any geometric configuration, substituting the coordinates of each pseudo satellite under the station center coordinate system into the final GDOP formula, and changing the station center coordinates of the pseudo satellites to change the angle relational expressions between the line and the line and between the line and the plane in the geometric configuration of the pseudo satellite system, so that the GDOP value of the pseudo satellite system is minimum. Therefore, geometric layout optimization of the pseudo-satellite system can be realized. According to the method, the geometric features of the geometric precision factors are displayed more conveniently and clearly.

A concentric ring electrode (CRE) is provided that can sense characteristics of an electrostatic potential, such as its Laplacian, more accurately than previous systems. The disclosed techniques can include receiving information specifying a geometrical configuration of the CRE. The CRE can include an inner ring and an outer ring. The disclosed techniques can also include estimating a dependence of a functional of the electrostatic potential on a set of potential differences comprising at least a first potential difference corresponding to the inner ring and a second potential difference corresponding to the outer ring. Estimating the dependence can include determining a null space of a matrix associated with a series expansion of the electrostatic potential for the geometrical configuration and determining, based on the null space, a set of coefficients for the dependence.

The application discloses an energy element numerical solution method for bending of a two-dimensional medium-thick plate with an arbitrary geometric configuration. The method comprises the following steps: a hole is dug in a standard rectangular domain to simulate a two-dimensional medium-thick plate domain with an arbitrary geometric configuration; then, a discrete variable-thickness matrix and a discrete variable-stiffness matrix are formed based on Gaussian integral points; then, a structure global discrete variable-stiffness system is constructed to represent the distribution of energy in space; the geometric boundary is controlled through discrete energy; finally, the numerical solution of the bending problem of the two-dimensional medium-thick plate with the arbitrary geometric configuration is obtained by solving an energy functional under the control of a global trial function. The application can solve the problem that the Reissner method cannot solve the bending problem of the two-dimensional medium-thick plate with the arbitrary geometric configuration by using a global trial function.

The invention relates to the technical field of welding and industrial robot automation, and discloses a welding track planning method and device, a welding robot and a medium. The welding track planning method comprises the steps that three-dimensional geometric model data of a welding workpiece is obtained, and a welding seam path and geometric characteristics of a welding seam are determined based on the model data; establishing a welding seam local coordinate system based on the geometric features; welding bead arrangement is planned according to the local coordinate system, and space arrangement information of each welding bead is obtained; determining geometric configuration parameters of each welding bead based on the spatial arrangement information; and the geometric configuration parameters are mapped to the corresponding welding line paths, and a welding track point set forming the welding track is obtained. According to the method, reliable trajectory planning of the pure linear welding seam is achieved, the application range of the multi-layer multi-pass welding automatic trajectory planning technology is remarkably expanded, and the automation level, the repetition precision and the field implementation efficiency of the welding technology are comprehensively improved.

The invention discloses a method and a device for automatically generating a tooling support rod structure. The method comprises the steps that spatial position information of a reference part of the tooling in a three-dimensional model of the tooling is determined, and the reference part comprises a main rod and a suction cup; based on the spatial position information, a geometric structure relation model of an auxiliary component connected with the reference component is established, and the auxiliary component comprises a supporting rod, a pipe chuck, a main rod connector and a suction cup adapter; and based on the geometric construction relation model, determining an installation pose of the auxiliary component, and based on the installation pose, generating a support rod structure of the tooling. The technical problem that in an existing tooling design technology, due to the fact that the degree of freedom of parts is large, assembling and adjusting are tedious is solved.

An electronic device with a deformable housing supports at least one display and includes sensors to detect the device's geometric configuration. Processors, operable with the sensors, present content with visual indicia that identify the deformed geometry at which the content was originally created, unless the current device configuration matches the original geometric configuration. The visual indicia may include instructions for adjusting the device to match the original geometry, enhancing the playback experience. The content's originating geometric configuration can be stored as metadata, allowing for accurate reconstruction during playback. This system addresses the challenges of screen recording and playback on foldable devices by incorporating the device's folding angle information into the screen recording process, thus ensuring playback reflects the original recording conditions.