114 results about "Machine simulation" patented technology

The invention discloses a power grid transient process deduction method based on digital twinning, electronic equipment and a medium, and the method comprises the steps: building a digital twinning simulation model based on a new energy single-machine simulation model and a three-dimensional field station virtual model, and outputting a virtual value by the digital twinning simulation model; collecting core parameters in a monitoring period; calculating the deviation ratio of the physical value and the virtual value of the physical station based on the core parameter; and adjusting the transient process control strategy based on an adjustment object and the deviation rate, wherein the adjustment object comprises a virtual value, a core parameter, a scene parameter and a model control mode. The digital twinborn model can be calibrated in real time through deviation ratio closed-loop correction of a physical value and a virtual value, it can be ensured that simulation of the transient process of the power grid is highly consistent with the physical reality, and the precision and reliability guarantee of a deduction result is improved.

The invention relates to an implicit voxel Boolean subtraction optimization method in five-axis machining simulation. According to the method, an implicit tool geometric expression model based on a symbolic distance function is constructed, and a dynamic voxel modeling technology with a layered structure is combined, so that efficient interactive modeling of a material removal process between a tool and a workpiece is realized. The whole process of the method comprises four key stages of spatial positioning, vertex interference detection, projection correction and grid reconstruction, and can cope with geometric modeling challenges caused by continuous motion of a multi-degree-of-freedom and multi-attitude cutter. A dynamic block loading mechanism and a local state synchronization strategy are introduced, so that the real-time response capability of Boolean subtraction operation under complex working conditions is effectively improved, and meanwhile, the continuity and integrity of machining geometric boundaries are kept. The method has good expandability and robustness, obviously reduces space-time complexity of calculation on the basis of keeping geometric surface continuity and topological correctness, realizes millisecond-level response time in an experiment, and has a good application prospect. The method is widely applied to virtual machining simulation and intelligent process verification systems of complex free-form surface parts such as aero-engine blades and automobile structural parts.

The invention particularly relates to a discharge machining simulation control system for a nuclear power plant in a high-radiation boron-containing water environment, which belongs to the technical field of special maintenance in the high-radiation environment of the nuclear power plant and comprises a man-machine interaction system, a discharge machining control system and subsystems. Each subsystem comprises a pulse power supply system, a servo power system, a washing system, a purification system, a grounding system and a tool system; the man-machine interaction system is used for man-machine interaction and displaying the discharge machining implementation data fed back by the subsystems; the electric discharge machining control system is used for generating an electric discharge machining instruction according to the man-machine interaction information and controlling the subsystems to cooperate to perform electric discharge machining work; and each subsystem is used for implementing electric discharge machining work according to the electric discharge machining instruction and feeding back electric discharge machining implementation data. According to the invention, simulation control of discharge processing in the high-radiation boron-containing water environment of the nuclear power plant is realized.

The invention discloses a metadata set driven robot fine control heterogeneous data real machine simulation evaluation method, a medium and equipment. Simulation data and real machine logs are uniformly converted into a directed acyclic task graph (DAG) with preconditions, effects and constraints through a stable action library, an attribute library and an object / robot adapter, a Meta-Dataset is constructed, and a comprehensive scoring model combining a process score (PS) and an area under a success rate-difficulty curve (AUC) is defined on the Meta-Dataset. The method comprises the following steps: introducing an anti-cheating client integrating a policy fingerprint attestation (PFA), an action Merkel log (AML) and a verifiable execution experiment (VEE) at a real machine side, extracting an environmental parameter vector theta by utilizing a theta encoder, performing conditional playback according to the theta in a simulation environment, obtaining a success rate and a confidence interval by adopting a posterior predictive inference (PPI), and combining with a real machine result to form a calibration score; and cross-dataset and cross-platform robot fine control unified evaluation with anti-cheating capability is realized.

The invention relates to the technical field of computer aided design and numerical control machining simulation, in particular to a five-axis linkage numerical control machine tool machining simulation modeling method and system. Comprising the following steps: acquiring a workpiece space three-dimensional model, tool geometric model data and a six-dimensional pose data sequence; a dynamic virtual view cone is constructed, and the workpiece space three-dimensional model is divided into different areas; calculating spatial distances corresponding to different areas and mapping the spatial distances into different grid resolutions; performing spatial discretization and integration on the corresponding areas according to different grid resolutions to obtain a multi-resolution dynamic workpiece model, and performing Boolean material removal simulation to obtain a machining state model; and carrying out time sequence fusion on the machining state models at all moments to obtain a workpiece machining time sequence simulation model. According to the method, the processing process is sensed through the dynamic virtual view cone, adaptive distribution of modeling resources is realized, the problem of resource waste caused by uniform partitioning is solved, and the simulation efficiency is remarkably improved while the precision of a key region is ensured.

The invention belongs to the technical field of slurry shield slurry film forming, and particularly relates to a dynamic earth pressure balance shield slurry film forming test device and a maintenance observation method.The dynamic earth pressure balance shield slurry film forming test device comprises a base assembly, a stratum box assembly, a shield tunneling machine simulation assembly and a driving assembly, and the stratum box assembly, the shield tunneling machine simulation assembly and the driving assembly are all installed on the base assembly; the shield tunneling machine simulation assembly is in butt joint fit with the stratum box assembly, and the driving assembly is connected with the shield tunneling machine simulation assembly and used for driving the shield tunneling machine simulation assembly to excavate and convey slurry. According to the invention, the limitation that only static simulation can be realized in the existing test can be solved, the actual construction working condition is fit, different water pressure stratum environments can be simulated, constant temperature, humidity and pressure of a mud film working environment can be maintained, the reference value of a test result is improved, and full-flow data from film forming to pressure maintaining and visual support are realized, and the performance of the mud film is accurately captured.

The invention discloses a three-phase five-wire system electric switch machine simulation box, which belongs to the technical field of rail transit signal equipment, and adopts a high-power aluminum shell resistor to simulate a switch machine motor coil; three LED power indicator lamps are adopted to check the phase loss condition under the condition of three-phase current fault; a polarity holding relay is adopted to simulate the positioning and anti-position states of the switch machine; the time relay adopting power-on time delay is used for setting the action time of the simulation switch machine; a diode resistor circuit is adopted to simulate a rectifying circuit in an outdoor box of the switch machine; the AC-DC power supply module is used for supplying power to the time relay and the polarity holding relay. According to the invention, the control operation process of the switch machine, phase sequence inspection and definite and reverse position representation can be simulated, manual intervention is not needed, the efficiency of indoor turnout combination circuit wiring inspection is improved, the cost is reduced, and the operation is simple.

The invention relates to the field of aero-engine complete machine full-three-dimensional numerical simulation, and discloses an aero-engine complete machine full-three-dimensional simulation initial field presetting method and system, and the method comprises the steps: obtaining initial flow field boundaries of different parts from the zero-dimensional level of a complete machine by solving inlet section parameters and outlet section parameters of each part; then obtaining an initial field of each blade row in a turbine part, which has the most critical influence on the convergence of an engine, through a quasi-three-dimensional layer S2, and realizing initial field decomposition from the part to the part; and finally, by adopting a radial basis function interpolation method, mapping the zero-dimensional data and the S2 quasi-three-dimensional parameters to each grid unit of the complete machine full-three-dimensional model of the aero-engine, and then smoothly splicing the initialized flow fields of all the components at the interface to form a continuous complete machine three-dimensional simulation initial field under the examination working condition. The convergence of a whole machine simulation example, the simulation convergence speed and the numerical stability are greatly improved, the simulation trial and error iteration is reduced, the pretreatment time consumption is reduced, and the simulation speed and efficiency are improved.

To provide a technology that enables machining simulation to be performed at higher speed than conventional techniques. [Solution] The information processing device includes a control unit. The control unit executes a process to acquire a voxel model used in a simulation. The voxel model is defined by a plurality of lattice points that constitute a collection of voxels. Each of the plurality of lattice points is associated with a label that indicates an attribute of the object at the position of the lattice point. The control unit executes a process to acquire processing information that defines the irradiation coordinates of a laser beam and the irradiation direction of the laser beam for each time step, and a process to sequentially update the labels associated with the lattice points within an area specified by the irradiation coordinates and irradiation direction to a state where additional processing has been performed, according to the time step.

The invention relates to the technical field of machining simulation, in particular to a voxel-based five-axis real-time cutting simulation method, which comprises the following steps of: determining a voxel size according to the number of rendered voxels, and performing voxelization processing on workpiece modeling according to the voxel size to obtain a workpiece voxel grid model; carrying out blocking processing on the workpiece voxel grid model to obtain a plurality of voxel blocks; and updating and rendering the model voxel in the voxel block according to the pose information of the cutter. In order to solve the problem that in the prior art, when large-scale voxels are processed in the cutting simulation process, efficiency is low or precision is insufficient, the size of the rendered voxels is dynamically calculated through workpiece modeling, voxelization processing is carried out, the good rendering efficiency is achieved, block processing is carried out on a workpiece voxel grid model, and the processing efficiency is improved. When cutting is simulated, only the specific block making contact with the cutter is locally updated, the number of voxels needing to be simulated and rendered again is reduced, and the processing efficiency is improved.

A training device includes a simulation data acquirer that acquires first simulation data through machining simulation with a first machining program, an actual machining data acquirer that acquires first actual machining data through actual machining with the first machining program, and a model generator that learns a relationship between the first simulation data and the first actual machining data and generates a trained model for predicting, based on second simulation data acquired through machining simulation with a second machining program, second actual machining data acquired through actual machining with the second machining program.

A simulation virtual debugging method and system are applied to debugging of a nuclear reactor refueling machine control system, and the method comprises the following steps: generating an operation sequence according to a received refueling demand, the operation sequence comprising a plurality of equipment instructions; simulating the equipment instruction through a pre-constructed refueling machine simulation model and a preset buoyancy algorithm rule to obtain simulation result information; and debugging the nuclear reactor refueling machine control system according to the simulation result information. According to the scheme, the debugging work of the nuclear reactor refueling machine control system can be started without waiting for mechanical equipment to arrive at a factory, the project production time can be shortened, and the debugging accuracy, reliability and debugging efficiency can be ensured.

The invention relates to the technical field of vapor deposition coating, in particular to a coating device airflow field optimization method and system, electronic equipment and a computer readable storage medium, and the method comprises the steps that a first coating device simulation model is established based on original structure parameters of an entity coating device, and the original structure parameters comprise to-be-adjusted parameters; configuring simulation parameters and simulation boundary conditions of the first coating device simulation model according to preset process conditions of the entity coating device to obtain a second coating device simulation model; performing airflow field simulation based on the second coating device simulation model to obtain a simulation result; judging whether the simulation result meets a preset condition or not; and when it is determined that the simulation result meets a preset condition, setting an entity coating device according to the corresponding numerical value of the to-be-adjusted parameter in the second coating device simulation model, and finally improving the film thickness consistency of coating of the coating device.

The invention discloses an engine ventilation process simulation calculation method based on three-dimensional iteration calibration, and belongs to the technical field of engine simulation data processing. The invention discloses an engine ventilation process simulation calculation method based on three-dimensional iteration calibration. The method comprises the steps that a one-dimensional simulation model and a three-dimensional simulation model of an intake and exhaust pipe system of an engine are constructed; same parabolic pressure wave boundary conditions are applied to air ports of the one-dimensional simulation model and the three-dimensional simulation model; calibrating the one-dimensional simulation model by iteratively adjusting structural parameters of key pipe sections of the one-dimensional simulation model by taking pressure waveforms of air cavities and header pipe nodes in the three-dimensional simulation model as references; and applying the calibrated one-dimensional simulation model to the one-dimensional model of the whole engine. By adopting the engine ventilation process simulation calculation method based on the three-dimensional iteration calibration, the problem that the whole machine simulation design efficiency is low due to the fact that the coupling relation is complex and the calculation time is long in the existing engine three-dimensional ventilation process can be solved.

The invention provides a verification method and a verification system, and belongs to the technical field of network security. According to the method, by generating the verification code image containing the non-character pattern contour, dependence of traditional OCR on characters can be avoided essentially, and safety is improved from the attack root. And meanwhile, a plurality of text feature options and at least one interference option are generated in combination with a visual feature extraction model, so that dual verification (including option semantic verification and behavior track verification) on user operation can be realized, multi-level cross inspection can be performed on the user operation, and attack of an automatic script can be effectively identified and blocked. In addition, by introducing depicting track verification based on a non-character pattern contour, the interaction mode that a traditional click verification code is single is broken, and an active behavior dimension which is difficult to be simulated by a machine is added for the verification process. Thus, through a dual verification mechanism of semantic hiding and behavior trajectory analysis, the success rate of machine attacks can be significantly reduced, and dual improvement of security protection and user experience is realized.

The application is based on a parallel flow passage heat exchanger flow distribution simulation method of a general flow resistance model: one, single channel general flow resistance model construction stage: create a general flow resistance model; single channel fine modeling and simulation; obtain pressure drop-flow rate data; fitting to determine the flow resistance coefficient; two, whole machine flow distribution simulation stage: build the whole machine simulation model: establish the three-dimensional geometric model of the macro flow channel system of the target heat exchanger and carry out grid division to obtain the macro flow channel CFD model, abstract all parallel microchannels of the core heat exchange section of the target heat exchanger into a parallel flow resistance network composed of a large number of flow resistance elements, each flow resistance element is endowed with the general flow resistance model with a specific flow resistance coefficient which has been determined in stage one; coupling solution, establish an iteration process, make the error between the driving pressure difference of each flow resistance element and the pressure drop calculated according to the general flow resistance model less than a preset threshold, and the iteration converges; output the flow distribution results of all parallel flow passages of the target heat exchanger.

The invention belongs to the field of numerical control machining simulation, and particularly discloses a cutting machining simulation method and system in a complex motion state, and the method comprises the steps: calculating a machining instantaneous contour line SPc (s, t) according to an initial tool model CSC and the current speed and angular speed of a tool; the initial tool model CSC = CST, CU CSM, CU CSB and C, CST and C represent the outer contour line of one side of the upper conical surface of the tool, CSM and C represent the outer contour line of one side of the middle transition circular ring surface of the tool, and CSB and C represent the outer contour line of one side of the lower conical surface of the tool; based on the instantaneous contour line SPc (s, t) and the corresponding movement pose parameter PC, establishing a tool path motion entity model of the tool; and combining the cutter path motion entity model and the cutter entity model to obtain a complete cutter swept volume model and a cut blank entity model. According to the method, the calculation of the instantaneous contour line in a complex motion state can be realized, and the cutting simulation precision is improved.

A master station and substation digital twinborn communication method and system oriented to automatic master station practical training comprises the steps that digital twinborn bodies of master station front-end processor simulation and substation telecontrol machine simulation are constructed and used for simulating the actual operation states and data of master stations and substations; constructing a communication protocol between the master station front-end processor simulation digital twin and the substation telecontrol machine simulation digital twin, wherein the communication protocol comprises a branch routing strategy and an intelligent channel gatekeeper strategy; performing communication configuration on the master station front-end processor simulation digital twin and the substation telecontrol machine simulation digital twin, and checking the consistency of the communication configuration; and realizing many-to-many communication between the master station front-end processor simulation digital twin and the substation telecontrol machine simulation digital twin based on a communication protocol according to the working modes of the master station front-end processor simulation digital twin and the substation telecontrol machine simulation digital twin. The simulation communication efficiency between the master station and the slave station can be improved, the communication stability is enhanced, the simulation complexity is reduced, and the simulation effect is improved.

The invention discloses a refrigerant dynamic charging process based on complete machine simulation operation, and belongs to the technical field of air conditioners and heat pumps. The problem that existing refrigerant charging depends on a static target value and cannot adapt to system individual differences and working condition changes in a self-adaption mode is solved. According to the process, a digital twinborn simulation model of a to-be-charged air conditioning system is constructed, the system is started to operate under a preset simulation working condition, and a first operation parameter is collected to initialize and calibrate the model; dynamically filling the refrigerant according to a preset step length, continuously collecting a real-time second operation parameter, and feeding the real-time second operation parameter back to the model; on the basis of real-time data, the model performs online fitting on a changing curve of parameters such as the supercooling degree and the superheat degree along with the charging amount, and predicts the refrigerant amount when the energy efficiency ratio of the system reaches the optimal as the optimal charging target; and when the parameters collected in real time and the extreme value region predicted by the model converge, it is judged that filling is completed. According to the system and the method, 'tailoring 'type dynamic accurate charging aiming at each specific air conditioning system is realized, and the charging precision and the system operation energy efficiency are remarkably improved.

The invention discloses a parallel flow channel heat exchanger flow distribution simulation method based on a general flow resistance model. The method comprises the following steps: 1, a single-channel general flow resistance model construction stage: creating a general flow resistance model; carrying out single-channel fine modeling and simulation; acquiring pressure drop-flow velocity data; fitting to determine a flow resistance coefficient; 2, a whole machine flow distribution simulation stage: constructing a whole machine simulation model: establishing a three-dimensional geometric model of a macroscopic flow channel system of a target heat exchanger, performing grid division to obtain a macroscopic flow channel CFD model, abstracting all parallel micro-channels of a core heat exchange section of the target heat exchanger into a parallel flow resistance network consisting of a large number of flow resistance elements, each flow resistance element is endowed with a universal flow resistance model which is determined in the first stage and has a specific flow resistance coefficient; coupling solution is carried out, an iteration process is established, the error between the driving pressure difference of each flow resistance element and the pressure drop calculated according to the general flow resistance model is smaller than a preset threshold value, and iteration convergence is carried out; and outputting a flow distribution result of all parallel flow channels of the whole target heat exchanger.

1. The name of the design product: multi-axis CNC machine simulation training machine main machine. 2. The use of the design product: for multi-axis linkage CNC machine practical teaching and training. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

A processing defect cause analysis device (100) for analyzing the cause of a processing defect occurring in a processing surface processed by a processing device in accordance with a processing program is characterized by being provided with: a processing simulation unit (11) for generating an ideal processing surface, which is an ideal processing surface, by performing simulation based on the processing program; a first state observation unit (12) that observes a first state variable indicating the state of an actual machined surface, which is a machined surface machined in accordance with the machining program; a second state observation unit (13) that observes a second state variable indicating the state of the machining surface generated by the machining simulation unit (11); a state variable comparison unit (14) that outputs state variable comparison information indicating a result obtained by comparing the first state variable and the second state variable; and a learning unit (16) for generating a learned model for estimating the cause of the machining defect on the basis of the state variable comparison information by using learning data including the state variable comparison information and information indicating the cause of the machining defect occurring on the actual machining surface.

An information processing method includes: acquiring a first data set including condition data and result data on first machining performed by a first device (S101); generating an integrated data set including the first data set (S102); acquiring a second data set including condition data and result data on second machining performed by a second device; adding the second data set or a correction data set to the integrated data set (S108); and generating the correction data set by selecting one data set from the second data set or the modified data set, already added to the integrated data set, and correcting the condition data included in the second data set to the correction data, when the correction data is generated. The correction data satisfies a condition that a difference between result data indicating a result of a machining simulation performed under the condition of the correction data and result data included in the one data set is smaller than a predetermined value.

This invention provides a traction machine fault simulation test device, which, for existing traction machine operating conditions, provides testing personnel with a more effective testing scenario in the detection process, simulating brake spring torque decay and brake foreign object obstruction in an off-site manner. The traction machine fault simulation test device includes a brake arm displacement adjustment unit and a braking torque adjustment unit. The brake arm displacement adjustment unit includes a drive mechanism for rotating a rotating shaft that drives the manual release lever of the traction machine brake. The braking torque adjustment unit includes a horizontal linear guide rail parallel to the brake spring axis of the traction machine and a sliding seat mounted on the horizontal linear guide rail that can slide freely. A rotary motor and a first rotating component connected to the power output end of the rotary motor are mounted on the sliding seat. The first rotating component is coaxially arranged with the brake spring and can engage a reaction nut on the outside of the brake spring.

The invention provides a satellite reflector antenna control function verification system and method. The system comprises a stand-alone simulation subsystem, a timing system module and a consistency comparison module. The timing system module is respectively connected with input interfaces of the simulation software modules for communication, and the consistency comparison module is respectively connected with output interfaces of the simulation software modules for communication; the timing system module is used for simulating and generating unified timing system information and sending the unified timing system information to the single-machine simulation subsystem and the consistency comparison module for time sequence calibration; the single machine simulation subsystem is used for acquiring virtual data of each satellite single machine in a target planning scene through each simulation software module matched with the target planning scene according to the target planning scene of the satellite reflector antenna, and sending the virtual data to the consistency comparison module; the consistency comparison module is used for comparing the virtual data corresponding to each satellite single machine with the real data, and judging whether the conditions in a preset theoretical range are met or not.

The present invention relates to the field of machining simulation technology and discloses a method for animating a machining process and obtaining a workpiece and undeformed chips after machining, comprising the following steps: (1) decomposing the machining process into custom frames to generate a machining data set containing discrete coordinates of the swept surface and the spatiotemporal position of the tool tip; (2) connecting animation frames with events to achieve a closed loop of data acquisition, transmission, calculation, and animation rendering; and (3) secondary development of Rhino software to achieve Boolean operations and precision assurance, and output a model of the workpiece and an undeformed chip after machining. The present invention decomposes the machining process into frames, allowing users to customize the number of frames for a certain step as needed, and achieves precision-controlled swept volume modeling through linear adjustment. Increasing the number of frames can improve the sampling density of the swept surface and the precision of Boolean operations, while reducing the number of frames can optimize the computational efficiency, thereby forming a quantitative control mechanism for precision and efficiency, providing a high-precision and high-efficiency solution for complex gear machining simulation.

This utility model relates to a tunneling and anchoring machine simulation training device, comprising a preset machine frame assembly, a preset electrical control box, and a preset drive mechanism. The preset machine frame assembly is proportionally reduced in size, and the preset power supply voltage of the preset electrical control box is reduced. The preset electrical control box includes a signal acquisition unit, a remote control receiver, and a controller. The signal acquisition unit is used to acquire switch signals and analog signals. The remote control receiver is used to receive control signals. The controller generates corresponding control commands based on the analog signals, switch signals, and / or control signals. The preset drive mechanism includes multiple preset hydraulic cylinders, a preset motor, and a solenoid valve. The preset hydraulic cylinders and preset motors actuate to drive the corresponding preset machine frame assembly to perform corresponding actions. The corresponding solenoid valves are controlled according to the control commands to drive the corresponding preset hydraulic cylinders to extend and retract and / or control the operation of the corresponding preset motors. This utility model tunneling and anchoring machine simulation training device facilitates technical experiments and practical training.

The invention discloses a synchronous updating and real-time rendering method based on a tri-dexel model, and relates to the field of computer graphics and numerical control machining simulation, and the method comprises the steps: firstly initializing a workpiece model, building the tri-dexel model, converting the tri-dexel model into voxel data, and loading the voxel data to a GPU; dynamically updating the tri-dexel model according to a tool path during processing, and synchronizing voxel data to the GPU; during rendering, sight lines are projected to pixels from a camera, the GPU judges the intersection condition in parallel, a triangular patch is reconstructed and colored if intersection occurs, and the pixels are colorless if not; according to the synchronous updating and real-time rendering method based on the tri-dexel model, efficient real-time rendering of a high-precision model in dynamic machining is achieved, and the method is suitable for scenes such as numerical control milling and additive manufacturing.

The present application relates to the technical field of machining simulation, and particularly relates to a mold 3D machining time evaluation method based on UG software. The method comprises the following steps: obtaining airbag insert mold design parameters; extracting mold surface grid point set based on the airbag insert mold design parameters; calculating the cutting energy transmission field according to the mold surface grid point set; converting the cutting energy transmission field into a continuous energy distribution field, and identifying the positioning groove area according to the continuous energy distribution field; performing three-dimensional form scanning according to the positioning groove area to obtain positioning groove form data; detecting the positioning groove microhardness based on the positioning groove form data, and generating a machining difficulty map based on the positioning groove microhardness; obtaining mold material characteristic data; and constructing a material phase change model according to the mold material characteristic data and the machining difficulty map. The present application improves the precision and efficiency of airbag insert mold 3D machining time evaluation based on machining simulation technology.

1. Name of the designed product: test bench (motorcycle man-machine simulation). 2. Use of the designed product: man-machine engineering simulation test bench used in the design and development process of motorcycles. 3. Design points of the designed product: in shape. 4. Picture or photo that best indicates the design points: design 1 perspective view. 5. Design 1 bottom view and design 2 bottom view are parts that are not easy to see or cannot be seen when in use, so design 1 bottom view and design 2 bottom view are omitted. 6. Design 1 is designated as the basic design.