37results about How to "The simulation effect is accurate" patented technology

The invention provides a method for realizing an endoscopic minimal invasive surgery simulated training 3D platform system, which comprises the following steps of: 1. constructing a 3D platform system basic component library: constructing a 3D platform system basic component library through utilizing a basic algorithm; 2. realizing acore function of the 3D platform system: constructing a 3D platform system core algorithm through utilizing the 3D platform system basic component library and realizing the construction of a geometrical model and a physical model, graphic rendering, collision detection, force feedback, data communication with an operation platform and data exchange of a database; 3. constructing a medical model descriptive language: defining the geometrical and physical attributes of the models in a script way on the basis of the 3D platform system core algorithm and realizing program and data separation for facilitating system maintenance and management; and 4. calling the medical model, constructing a medical scene and stimulating various actions of the endoscopic minimal invasive surgery, which include grabbing, cutting, sewing, tying, titanium clip feed, smoke and bleeding. The invention supports force feedback and fictitious touch functions and supports various modeling methods.

The invention relates to an intelligent human platform establishing method for equipment design and evaluation. The method comprise the steps of 1) building a real three-dimensional digital soldier parameterized model, and controlling the human body height, weight and percentile; 2) performing individual movement simulation; 3) performing individual equipment parametric modeling and building a model base; 4) performing geometrical efficiency evaluation, biomechanical analysis evaluation, load metabolism analysis evaluation and comprehensive operational effectiveness fuzzy evaluation on single soldiers on the basis of prior standards, calculation models and independent experiment data. The main objective of the human platform is to develop individual equipment and soldier system ergonomic characteristics fully, study relations of soldiers, equipment and battlefield environments and how to design and improve the relations so as to achieve the reasonable combination, and accordingly, the developed equipment can be suitable for solider physiological and psychological characteristics, and the individual comprehensive operational effectiveness and survivability can be improved. The method can be widely applied to individual training.

The invention discloses a health and guarantee integrated management universal system of unmanned intelligent equipment, and belongs to the technical field of unmanned intelligent equipment. The health and guarantee integrated management universal system of the unmanned aerial vehicle intelligent equipment comprises a data server host and a WEB display terminal, wherein the data server host is connected with the WEB display terminal by a WEB interface, a data detection unit and a data transmission unit are arranged on unmanned intelligent equipment manufacturing matched equipment, the data server host is in signal connection with the data detection unit and the data transmission unit, the data server host comprises the following units of an external data receiving unit, and the external data receiving unit is used for receiving a signal detected by the data detection unit on the unmanned intelligent equipment manufacturing matched equipment. By the health and guarantee integrated management universal system, the problems of technical state monitoring, fault warning and diagnosis, application and maintenance decision, automatic recovery and the like of the equipment having unmannedcharacteristic are solved, and the modularization, the standard and high reliability of the health and guarantee integrated management system of the unmanned intelligent equipment are achieved.

The invention provides a method for analyzing stress of an asphalt pavement structure in different interlayer bonding states, and belongs to the technical field of asphalt pavements. The problems thatat present, modeling of pavement structures in different interlayer bonding states is inaccurate, and results have errors are solved. The method comprises the following steps: generating an asphalt pavement structure initial model with determined gradation of each layer by adopting discrete element software; secondly, setting corresponding boundary conditions, physical parameters of a material ina pavement structure layer and a contact model among unit particles, and establishing a discrete element mechanical analysis model; and finally, using a servo mechanism for simulating vehicle loads to load the asphalt pavement in different combination states, monitoring tensile stress, shear stress, tensile strain and pavement surface deflection value data at the load positions of all structurallayers of the pavement, drawing a stress data comparison graph, and analyzing the stress conditions of the asphalt pavement structure in different interlayer combination states. The method provided bythe invention is visual, simple and convenient, accurate in calculation data, and suitable for simulating various asphalt pavements in different interlayer states.

The invention relates to an urban ground roughness calculation method. The method comprises the steps of receiving a two-dimensional digital map, sent by a terminal, of a to-be-assessed area wherein the two-dimensional digital map carries building height values of buildings in the to-be-assessed area; segmenting the two-dimensional digital map to obtain a segmented meta-map; calculating the earthsurface microtopography height of the segmentation element map according to the building height value; and calculating the ground roughness of the to-be-evaluated area according to the ground surfacemicrotopography height of the segmentation element map, and sending the ground roughness to the terminal. Ground roughness can be accurately valued.

The invention discloses a channeling-blockage physical simulation experiment device and an effect evaluation method. The channeling-blockage simulation physical experiment device comprises a kettle body and a sleeve, wherein an annular pressure rubber sleeve is arranged between the kettle body and the sleeve; a ring-shaped cavity is formed between the annular pressure rubber sleeve and the sleeveand is used as a cement ring; an upper flange and a lower flange are respectively arranged at the upper end and the lower end of the kettle body and are respectively provided with a liquid injecting hole and a liquid discharging hole which are respectively communicated with the ring-shaped cavity; the upper flange is a ring-shaped flange, a small flange for sealing the upper end of the sleeve is arranged at the middle part of the upper flange, and a pressurizing hole is formed in the center of the small flange; when a channeling blockage simulation experiment is carried out, a constant-flux pump is communicated with the pressurizing hole, and when the evaluation of the channeling blockage effect is carried out, the constant-flux pump is communicated with the liquid injecting hole. The physical channeling-blockage simulation experiment device disclosed by the invention has the beneficial effects that a channeling path can be formed in a simulation manner to carry out a channeling-blockage physical simulation experiment, and a new method for simply and accurately evaluating the channeling-blockage effect is established, so that convenience is brought for preferring a channeling-blockage agent according to the site condition, and an experimental result also can provide reference for site channeling-blockage operation.

The invention relates to a dynamic frame interpolation technology-based curved surface process time and space simulation method. The method comprises the following steps of: starting simulating; constructing a simulation initial curved surface; initializing parameters of the curved surface simulation; constructing dynamic frame interpolation; and performing three-dimensional display on the curvedsurface constructed by the frame interpolation. The step of constructing the dynamic frame interpolation comprises the following steps of: calculating time values, calculating Z values of all points in a frame interpolation way, updating the Z values of all the points, and reconstructing again. According to the method, a curved surface space model is constructed in each frame interpolation time and is displayed by continuously calculating the time values until the last curved surface model is displayed. By the dynamic frame interpolation technology, the problem that the simulation process hops and is not fluent when a sample observation value is relatively limited, the conventional expression way of observation information is broken through, the observation information is expressed by pictures with curved surface time and space change, the change process is vividly and directly simulated, and the method is especially suitable for the simulation of the change process of the curved surfaces of groundwater simulation, ground subsidence and the like.

The invention discloses an FC network simulation terminal for achieving multi-channel simulation. The FC network simulation terminal comprises a central processing unit, an interface testing adapter, a PCI-EXPRESSX4 interface, an interface chip, a first reference clock chip, a second reference clock chip and an FPGA. The interface testing adapter, the PCI-EXPRESSX4 interface, the first reference clock chip, the second reference clock chip and the FPGA are all connected with the central processing unit, and the interface chip is connected to the FPGA. By means of the principle, an FC network simulation device can achieve multi-channel simultaneous simulation at the same time, the simulated effect is accurate, and the network communication reliability is improved.

The invention provides a block stone shape and broken accumulation body discrete element three-dimensional modeling method. The method comprises the following steps: feature points are set on the surface of a block stone; the dimension stone is photographed, and geometric information of the dimension stone is extracted; a non-block stone part in the picture is subjected to mask processing and then imported into three-dimensional live-action modeling software, spatial position information matching of all surfaces of the block stone is obtained, noise point clouds are removed, a block stone three-dimensional initial model is generated, and a block stone grid model database is established; redundant block stone grids in the block stone three-dimensional initial model are removed, and mesoscopic parameter calibration is performed to obtain soil particle parameters and block stone parameters; block stone putting is performed on the block stone grid models in the block stone grid model database by using a stone content control program based on particle flow analysis software to generate a block stone numerical model; an accumulation body numerical model is generated in particle flow analysis software; and accumulation body parameter calibration is performed on the accumulation body numerical model to obtain an accumulation body discrete element three-dimensional model.

The invention relates to an environment simulation vibration test system for an unmanned aerial vehicle in a real flight state, and the system comprises the unmanned aerial vehicle, a simulation cavity, an environment control system, and a data processing device. The environment control system comprises a controller, a temperature simulation device, a humidity simulation device and a wind power simulation device, wherein the temperature simulation device, the humidity simulation device and the wind power simulation device are controlled by the controller to adjust the temperature in the simulation cavity, the humidity in the simulation cavity and the wind power flow direction and magnitude in the simulation cavity. By the adoption of the system, the environment simulation vibration test system under the actual flight state of the unmanned aerial vehicle accurately simulates the real environment, and therefore accurate test data are obtained.

The invention relates to a drilling platform rising and falling unit transmission efficiency simulation method and system based on weighting. The method comprises the following steps: (1) modeling a drilling platform rising and falling unit transmission device; (2) introducing the model into an Adams mechanical system, and processing the model according to needs analyzed by the Adams mechanical system; (3) carrying out virtual prototype simulation, and outputting simulation data into a text file; (4) sampling the simulation data at an equally-spaced interval of time so as to obtain multiple groups of discrete data points, and carrying out initial calculation on an efficiency value; (5) fitting the obtained efficiency value by a weighted least-squares method, thereby obtaining an efficiency curve. The method and the system have the advantages that being different from evaluation criteria to the data dispersion degree of the existing methods, the influence caused by the data points with high dispersion degree is weakened, data information with lower dispersion degree is emphasized, the interference resistance of a calculating process is correspondingly enhanced, and an obtained efficiency curve calculated result is more actual.

The invention discloses an intelligent training simulation system for processing power transformation operation and maintenance accidents. The intelligent training simulation system comprises a control layer, an information layer and a display layer, wherein the control layer is configured to read multipoint sampling data, submit the data to the information layer and simulate and display working processes of opening and closing of switches and disconnecting links and switching of protection pressing plates during an accident handling process through flash graphic interaction and frame technologies; the information layer is configured to realize remote control and dispatch in a B/S mode and ensure the security of Internet interaction by arranging a firewall or a proxy server; and the display layer is used for feeding back data variation conditions of the information layer and displaying the interaction information of the control layer. The intelligent training simulation system has the advantages of wide applicability and accurate simulation ability.