1865results about How to "Realize simulation" patented technology

The invention is directed at the full simulation of a smoking process when a smoker uses the inventive pipe. Said smoking-simulating pipe comprises a shank (1) and a bowl (2) which are embodied in one piece, and a stem (4) which is detachable from the shank (1) and is provided with a bit, wherein a cavity (5), which is used for placing a sealed capsule (6) provided with a nicotine-containing or flavouring agent, is embodied in a smoking channel (14), and an electric heater (7) connected to a power supply (8), which is arranged in the walls of the bowl (2), is located before the capsule (6) in the smoking channel (14).

The invention provides a voiceprint identification method based on a Gauss mixing model and a system thereof. The method comprises the following steps: voice signal acquisition; voice signal pretreatment; voice signal characteristic parameter extraction: employing a Mel Frequency Cepstrum Coefficient (MFCC), wherein an order number of the MFCC usually is 12-16; model training: employing an EM algorithm to train a Gauss mixing model (GMM) for a voice signal characteristic parameter of a speaker, wherein a k-means algorithm is selected as a parameter initialization method of the model; voiceprint identification: comparing a collected voice signal characteristic parameter to be identified with an established speaker voice model, carrying out determination according to a maximum posterior probability method, and if a corresponding speaker model enables a speaker voice characteristic vector X to be identified to has maximum posterior probability, identifying the speaker. According to the method, the Gauss mixing model based on probability statistics is employed, characteristic distribution of the speaker in characteristic space can be reflected well, a probability density function is common, a parameter in the model is easy to estimate and train, and the method has good identification performance and anti-noise capability.

The invention relates to a device (1) and a method for simulating a welding process. The device comprises a computer (2) having an input device (11) and an output device (6), a welding torch (3), a magnetic position monitoring device (5) having at least one transmitter (13) and a plurality of sensors (14), a retaining device (15) for a workpiece (4) used for the simulation and a visualization device (16) for generating a two- or three-dimensional image (29) on the output device (6). The retaining device (15) has a recess (18) into which the workpiece (4) can be inserted, at least one transmitter (13) of the position monitoring device (5) being arranged below the recess (18) at as small a distance from the workpiece (4) as possible, and the retaining device (15) being designed as a small, portable box (19) to be placed on a table (10).

The invention relates to a soil slope water flow erosion resistance simulation test method and device. The device comprises a liftable slope simulation device, a sheetflood scouring simulation device, a water and soil collecting device, a flow velocity determining device and a slope surface form camera device. According to the test method, the water flow is controlled, surface flow and seepage are formed, and sheetflood water, seepage water and sediment quantity formed by scouring slopes by sheetflood water are collected. The flow, the flow velocity, the erosion depth, the sand yield and the like of the water flow are measured quantitatively. Compacted soil is soaked in water until saturation for simulation, the efficiency of an indoor simulation test on slope scouring is improved, the test period is shortened, the test result proves the maximum depth of a slope erosion gully and the change rule of the sand yield with time, discloses the relation between the water flow erosion capacity of catchment behind slopes and the slope length, gradient and time and provides a basis for prediction of the water flow erosion scale and the need of slope protection and reinforcement. The device is simple in structure, convenient to operate and suitable for measurement of soil mechanics parameters of slope soil mass.

The invention provides a method for simulating the fluid flow of a fracture-cavity oil reservoir, belonging to the field of numerical simulation of the oil reservoir. The method provides a numerical simulation method of an oil reservoir based on the coupling of a Navier-Stokes equation and a Darcy equation and mainly comprises the following steps of: (1) establishing a complex medium Navier-Stokes and Darcy coupling mathematical model; (2) using a numerical computing method of the Navier-Stokes and Darcy coupling model; and (3) respectively modeling a rock mass and fractures, wherein the respective modeling is easy, the description for the fractures is clear and easy, the quantity and the space of the fractures are not limited, and particularly, nodes on the fractures are not requested to be completely coincided with nodes of bed rocks so that the three-dimensional work is easier. A numerical simulation program is complied for realizing the method; and the method develops a numerical simulation theory and method of the fracture-cavity oil reservoir and scientifically realizes the simulation on the fracture-cavity oil reservoir.

The invention discloses a method and a system for voiceprint recognition based on vector quantization, which have high recognition performance and noise immunity, are effective in recognition, require few modeling data, and are quick in judgment speed and low in complexity. The method includes steps: acquiring audio signals; preprocessing the audio signals; extracting audio signal characteristic parameters by using MFCC (mel-frequency cepstrum coefficient) parameters, wherein the order of the MFCC ranges from 12 to 16; template training, namely using the LBG (linde, buzo and gray) clustering algorithm to set up a codebook for each speaker and store the codebooks in an audio data base to be used as the audio templates of the speakers; voiceprint recognizing, namely comparing acquired characteristic parameters of the audio signals to be recognized with the speaker audio templates set up in the audio data base and judging according to weighting Euclidean distance measure, and if the corresponding speaker template enables the audio characteristic vector X of a speaker to be recognized to have the minimum average distance measure, the speaker is supposed to be recognized.

The invention relates to a simulation platform and a method for power dispatching automation, in particular to a simulation platform and a method for a dispatching automation system. By the aid of the simulation platform and the method, a complex electric power system, a multistage dispatch master station system, a transformer substation, a power plant system, and AGC (automatic generation control) and AVC (automatic voltage control) substation systems are completely simulated, steady state and transient state calculation of the operating condition of the electric power system of simulated automatic control and relay protection devices and so on are carried out, and the operating condition of the electric power system is truly displayed. And therefore, standardized testing environment and testing method can be provided for testing the dispatching automation system and devices, reliability of the system is increased, operating efficiency of the system is improved and safe and stable operation of a power grid is effectively supported.

The invention discloses a five-axis linkage numerical control (NC) machining post processor and a processing method thereof, and relates to a post processor for an NC machining program and a processing method. The processor comprises computer program software which is used for processing a cutter location source file generated by a workpiece shape characteristic and a machining process, wherein the computer program software comprises a file management function module, a cutter management function module, a postprocessing function module, an NC file modification function module, a G code simulation function module, an NC file transmission function module, a coordinate system offset function module, an error compensation function module, a speed modification function module, a programming mode function module and a cutter-lifting and programming staring point function module. The processing method comprises the steps of setting a file, arranging a cutter, processing a programming mode, processing data of machine tool motion parameters, processing data of cutter dynamic cutting speed, outputting a G code file and the like. By the processor and the processing method, machining dynamic speed, speed compensation, non-linear error compensation and analog simulation of G code five-axis linkage can be realized.

A computer assisted surgery system with is enhanced graphics features is described for assisting a surgeon in orthopaedic procedures. A system is described for use in inserting multiple guide pins in hip fracture surgery using a single bore drill guide that has a graphical representation comprising its real trajectory and one or more virtual trajectories, the virtual trajectories representing potential positions of other guide pins to be placed during the procedure. Additionally, representations of inserted guide pins and virtual trajectories may be retained on the display at their inserted positions for use in aligning subsequent guide pins. A system is also described for orientation of an acetabular cup in a total hip replacement surgery. During cup insertion, the surgeon is provided with information regarding the orientation of the cup with respect to a pelvic reference frame that is based on accepted pelvic landmarks. The positions of each landmark is calculated by the system when a probe with a virtual tip, separate from its physical tip, is overlaid on the landmark in roughly orthogonal images of the pelvis.

The invention discloses a high-temperature creep deformation prediction and creep damage analysis method for a high-chrome steel component. The method comprises the following steps of: establishing a theoretical model, determining material parameters, designing a numerical integration algorithm, carrying out the secondary development of finite element software, carrying out the creep damage analysis of the component and the like. Compared with an existing technical scheme, the method disclosed by the invention is characterized in that a great improvement is carried out, the accurate prediction of the creep behavior and the creep damage of the high-chrome steel component can be realized, and therefore, the method has an important application value in the fields of the security design and the residual life evaluation of high-temperature high-pressure components in a supercritical generator set.

The invention discloses a testing device and a testing device method for simulating collapse of tunnel surrounding rock under conditions of rainfall and underground water seepage. The testing device comprises a model testing box, a rainfall adjustable simulating system, an underground water seepage simulating system, an underground water supplying system, a water content testing system, a stress monitoring system, a digital radiography noncontact measuring system and an optical fiber bragg grating displacement monitoring system. By simulating a progressive failure process of tunnel weak broken surrounding rock under the action of seepage of surface water and underground water, mechanical behaviors of crushing the surrounding rock under different rainfall conditions and different underground water seepage path conditions are quantitatively researched. By obtaining multiple-physical field information in a tunnel surrounding rock collapse process, multi-information features in different evolutionary phases and internal links of information of all fields of the collapse are analyzed, a progressive failure process and fracture morphology and ranges of the tunnel weak broken surrounding rock under different factors are determined, and the effective basis is provided for disclosing a progressive failure principle and a dynamic pressure arch effect of the weak broken surrounding rock under conditions of rainfall and underground water seepage.

The invention relates to a multifunctional model test system for tunnel and underground engineering. The test system comprises a rail, a model box, a servo-controlled test loading device, a rotating seat, rotating shafts and a bracket, wherein the rail is arranged on the upper part of the test system; the model box is arranged on the middle part of the test system and comprises an outer frame, an inner frame and an organic glass plate; the servo-controlled test loading device comprises a horizontal loading jack and a vertical loading jack; the rotating shafts are arranged on the two sides of the middle part of the test system; and the rotating seat is arranged on the back surface of the upper part of the test system and is connected with the bracket through a rotating loading cylinder. The system can perform a model test on a block system, rock tunnel excavation, a tunnel chamber, a tunnel group, a side slope, shield excavation and building traversing, has a facade rotating loading function, effectively solves the technical problem that a strain field is required to have a wide uniformity range and a high uniformity degree in the model test, and can well simulate the stress environment of tunnels existing in a rock-soil body.

The invention relates to a slope water-soil loss experiment device and method under combined extreme meteorological conditions. The experiment device comprises an experiment table, a combined extreme environment simulation unit and a control system unit, wherein the experiment table comprises a bottom base, a slope base plate, a downstream baffle plate, soil block standard elements and an experiment table regulating device; the combined extreme environment simulation unit comprises a rainfall simulation device, an air field simulation device, a freezing rain simulation device, a snowfall simulation device, a sunlight simulation device, an air temperature simulation device and an overland flow simulation device; the control system unit comprises a power supply system, a water supply system and a signal acquisition and processing system. According to the invention, the slope water-soil loss experiment device and method under combined extreme meteorological conditions perform indoor simulation and measurement of a slope water body loss situation under a single or combined extreme meteorological conditions of rain storm, rain and snow, freezing rain, flood, drought, high temperature and the like, can achieve accurate and reliable results, and can be widely applied to water-soil loss monitoring, principle analysis and governance under complex variable meteorological conditions.

The invention discloses a simulated experiment device for dynamic damages of roadbeds and road surfaces under highway traffic loads. The simulated experiment device is composed of at least one traffic load dynamic loading system, a roadbed-road surface structure and a data acquisition system. Modes for controlling a loading function by a hydraulic oil source system and an MTS servo loading system are adopted, a microcomputer controlled acquisition system controls the vibration waveform of a simulated traffic load and drives an actuator to carry out loading on a loading axis and a loading wheel, the loading wheel transfers dynamic loads to a roadbed part through a road surface structure, and measuring point data of a road surface testing component and a roadbed testing component is intensively controlled, acquired and stored by a microcomputer through data transmission cables. The device disclosed by the invention is reasonable in structure and convenient to operate, and can simulate the needs of a dynamic traffic load simulation test for the long-term behavior of roadbeds and road surfaces acted by a highway traffic load at different speeds and different axle weights.

The invention discloses a multi-degree-of-freedom vehicle dynamics test platform which comprises a double-rod vertical loading hydraulic cylinder with an axial force sensor, a measurement and control system, a roller, a rotating disk, a position servo hydraulic cylinder, a six-degree-of-freedom Stewart platform, an outer rotor motor, a six-force-component sensor and the like. The use of the multi-degree-of-freedom vehicle dynamics test platform can simulate the changes of geometrical shape and mechanical properties of a road pavement and the incentive role of the changes to wheels, the exertion of any one-dimensional or multi-dimensional force in six-dimensional pavement incentive force on the wheels can simultaneously carry out pavement simulation, static load simulation and dynamic load simulation, and the wheels can change the direction relative to the roller, thereby realizing the simulation of large tire sideslip angle caused by turning of a vehicle, being capable of measuring steering angles of the wheels and six-dimensional force born on the wheels, carrying out better simulation and testing on the practical driving working status of the vehicle, realizing the comprehensive research of the multi-degree-of-freedom vehicle dynamics and providing the vehicle dynamics test platform with more excellent performances.

The invention relates to the technical field of bridge construction simulation, in particular to a method and device for conducting construction simulation on a steel truss arch bridge through a BIM. The simulation method includes the steps that a construction plan document of the steel truss arch bridge is input into system software, so that a construction plan operation file is acquired, the construction plan operation file is related to a construction model of the steel truss arch bridge, and a three-dimensional construction plan model including time, resources and plans is generated; according to the three-dimensional construction plan model and the design structure of the steel truss arch bridge, embedded section construction process simulation, closure section construction process simulation, on-arch upright construction process simulation and reinforced concrete beam construction process simulation are conducted on the steel truss arch bridge. By the adoption of the method and device for conducting construction simulation on the steel truss arch bridge through the BIM, the construction process of the steel truss arch bridge to be built can be simulated so that problems existing in the bridge construction process can be found in time, and data reference is provided for actual construction of the steel truss arch bridge.

The invention provides an electricity market simulating system by adopting an SOA technology, which realizes global simulation for current electricity market of the country, provides technical support means for simulating electricity market operation and electricity system operation in different environmental conditions and market behaviors, globally evaluating market status, preventing market risks, verifying market rules, studying safe and stable operation strategy and measures of the electricity system under electricity market condition, and training electricity market related working staff, and provides a reliable technical analysis tool for high-efficiency excellent operation of the electricity market of the country.

The invention provides a flight control simulation system with fault diagnosis capability for an unmanned helicopter. The flight control simulation system with fault diagnosis capability for an unmanned helicopter comprises a simulation general control console, a simulation computer, a flight control management system, a sensor system, physical effect equipment, a servo system, a remote control and remote measurement system, and a task load system, wherein the simulation general control console controls the simulation computer to carry on a power on test, model generation and injection of fault model; the simulation computer selects simulation and interference model and simulates fault injection to carry on flight simulation; the flight control management system receives the information of sensors and the remote control and remote measurement system; the servo system realizes the real reaction of an operating mechanism; and the sensor system transmits the acquired sensor information to the flight control management system. For the flight control simulation system with fault diagnosis capability for an unmanned helicopter, the simulation computer can be embedded into different aircraft mathematical models, so that simulation of a plurality of aircrafts can be realized. For the flight control simulation system with fault diagnosis capability for an unmanned helicopter, the servo system and the sensor system can access a real steering engine of aircraft and real sensors so as to develop the steering engine of aircraft, to make a test flight for the steering engine of aircraft, and detecting working of the sensors.

The invention discloses a modular multilevel converter (MMC) topology converter efficient electromagnetism transient state simulation method. The method comprises the following steps: (1) building a thevenin equivalent circuit of a submodule and acquiring the hevenin equivalent circuit of a series subnodule, (2) opening power system computer aided design (PSCAD) and operating Fortran script editing user-defined module, (3) replacing at least one submodule by using the user-defined module, (4) using status bit to show insulated gate bipolar transistor (IGBT) status in the user-defined module of the PSCAD, (5) and figuring submodule capacitor voltage and submodule current by using a difference equation. The method reduces the number of nodes of a MMC topology converter model, and is quick in simulation speed and high in efficiency.

The invention belongs to the field of three-dimensional movement simulation systems, especially relating to a flight simulation system facing to the power line polling. The system is composed of a polling simulation sub-system, an intelligent control sub-system and a flight simulation sub-system; the polling simulation sub-system is composed of an aircraft navigation module, an image processing module and a micro observation scene model; the intelligent control sub-system is composed of an upper computer module, a controller module, hardware and a driving module; and the aircraft simulation sub-system is composed of a three-dimensional movement module, an image acquiring module, a safety protection module and a data link module. A three-dimensional intelligent movement platform is used for simulating the aircraft action, thereby realizing the functions of target detection, tracking, identifying, power line fault analysis and diagnosis, path planning and the like by capturing, acquiring, processing and analyzing the optical information. The system provides a high-quality experiment platform for the autonomation and intellectualization of the power line polling.

The invention discloses a numerical simulation method for cavitation compressible flow shock wave dynamics and belongs to the field of numerical simulation of cavitation compressible flow and shock wave dynamics. A three-dimensional computing watershed based on three-dimensional geometric modeling software is established; a three-dimensional computing watershed mesh is divided based on mesh generation software; a cavitation compressible flow computational fluid dynamics model is established; an initial boundary condition is set to perform a three-dimensional computational domain flow field numerical computation; based on flow field post-processing software, the computational result is post-processed to obtain the unsteady evolution process of a multi-phase bubble structure. The numerical simulation method for cavitation compressible flow shock wave dynamics in the invention facilitates in-depth study of the cavitation physical mechanism, can be applied to the field of cavitation compressible flow and shock dynamics numerical simulation and solves related engineering problems. The cavitation compressible flow and shock dynamics numerical simulation engineering application area comprises hydraulic machinery, marine propellers, aviation turbo pump induction wheels, underwater supercavitation weapon applications.

The invention provides a train motion simulation system. Models are used by the simulation system and the models comprise a traction system model, a braking system model, a basic resistance system model, a line system model and a kinematic physical model. Thorough analysis is conducted on internal and external elements that influence a train motion state through the models, results simulated by the traction system simulation module, the braking system simulation module, the kinematic physical simulation module, the basic resistance system simulation module, the line system simulation module and the kinematic physical simulation module according to corresponding simulation models are closer to actual train states and requirements of engineering application. In addition, a train controller model and a corresponding train controller simulation module are added to the train motion simulation system, analogue simulation of controlling of a controller to a train is achieved so that analogue simulation of the train motion simulation system to train operating is closer to actual train states, more intelligent and closer to the requirements of engineering application.

The invention discloses a broadband carrier communication performance detecting system. The system is composed of a point-to-point communication performance detecting system and a communication networking testing system. The point-to-point communication performance detecting system is used for evaluating transmission power, transmission frequency offset, out-of-band spurious components, a reception dynamic range and anti-noise performance of equipment related to power line carrier communication and micropower wireless communication in an electricity utilization information acquisition system. The communication networking testing system is used for evaluating a local communication routing networking ability of the electricity utilization information acquisition system by using a computer to set a plurality of path schemes including a through path and an attenuation path and using a pre-assumed program to perform different permutations and combinations. The electricity utilization information acquisition system, collects, monitors and manages information such as electric energy of a plurality of electric energy meters in a centralized manner by a master station through a transmission medium. The system has functions of signal power testing, spectrum analysis, program control attenuation, noise simulation, power supply filtering and isolation, signal shielding and the like.

A steel liquid solidification simulator in a continuous casting crystallizer comprises a machine seat, a steel furnace, a crystallizer, a throwing motor, a vibration motor, a cooling water channel and a data acquisition system. Two lead screws are arranged on the machine seat, one ends of the lead screws are perpendicular to the plane of the machine seat, and the other ends of the lead screws areconnected with a motor driving device. A lifting bracket is arranged on the lead screws. The steel furnace is arranged on the machine seat. Both the throwing motor and the vibration motor are arranged on the lifting bracket, the crystallizer is driven by the vibration motor to vertically vibrate, the throwing motor drives a throwing board, and the throwing board is located below the crystallizer.By simulating practical production process of continuous casting, the steel liquid solidification simulator in the continuous casting crystallizer measures heat flux change curves at meniscus positions in the crystallizer under different continuous casting process parameters, obtains a steel liquid solidification shell with characteristics of practical casting blank, and achieves research on initial solidification performance of steel liquid in the crystallizer and influence of the continuous casting process parameters on steel liquid initial solidification performance, and is convenient to operate, low in test cost and suitable for serving as a device for laboratory to research various process conditions of the continuous casting crystallizer.

The invention discloses a two-interface cementing strength testing device of a cementing sheath containing hydrates and an ice stratum. The testing device comprises a kettle shell base and a simulation sleeve which is vertically arranged in the middle of the kettle shell base. A polyvinyl alcohol membrane tube is arranged on the periphery of the simulation sleeve, an annular cavity is formed between the simulation sleeve and the polyvinyl alcohol membrane tube, a temperature control circulating bath sealing cover is arranged on the outer edge of the top of the kettle shell base in a surrounding mode, the position between the temperature control circulating bath sealing cover and the polyvinyl alcohol membrane tube is filled with a simulation stratum, the top of the simulation stratum is covered with a stratum kettle cover, the top of the simulation sleeve is covered with a pressurizing kettle cover which covers the top of the cavity, and a pressure device for pressurizing the pressurizing kettle cover is arranged above the pressurizing kettle cover. The testing device has the advantages that the structure is simple, installing and using are convenient, production cost is low, and a detection result is accurate and reliable.

The invention discloses a temperature adjusting system of an integrated sand-blowing dust-blowing environment simulation system, comprising a heat exchanger, an electric heater and a cooling medium and heating medium unified allocation network, wherein the each passage is provided with a plurality of valves for controlling flow rate. A heat-transmitting part and a temperature-adjusting part, the separating part and the flow guide part of a sand-blowing wind hole and a dust-blowing wind hole, and hole body structures are combined together, therefore, the system has compact structure and convenient clearance, is an integrated sand and dust environment test device with fast temperature adjustment and continues work capability, has less occupied space, good airflow quality of a test section and low system energy consumption, and is especially suitable for the occasion of continues test.

The invention belongs to urban railway system vocation education equipment which can realize multi-type failure simulation of a metro passenger car door system and bidirectional communication linkage based on analog simulation software. The analog simulation software can set a failure to an experiment table and also can collect the state of the experiment table to realize structural dismounting, a work principle and an overhauling flow in a three-dimensional manner. The method and the device disclosed by the invention can be used for realizing practical training, checking and scientific researches of the metro passenger car door system. The whole device comprises six parts including a passenger car door assembly experiment table, an integrated array type control and collecting module, an embedded type handheld failure simulation terminal, a handheld failure setting device, a connecting wire, a data conversion connector, a main control computer, and analog simulation and control software. The type of simulated failures comprises an EDCU (Electronic Door Control Unit) failure, short circuit, open circuit, earth connection, deadlock, an intermittent failure, device damages, signal interference and the like. The method and the device can be used for researching a car door clamping force, a bypath door control line and the like.

The invention belongs to the technical field of marine equipment, and particularly relates to a marine splash environment simulation test device, wherein stringed testing cable holes are arranged in the upper part of one side surface of the box-structured test box, a frame-structured drive pull rod is arranged on the other side, a splash plate angle adjusting rod is arranged at the lower part, and a splash plate is formed at the inner end of the splash plate angle adjusting rod; sensors and water inlets are arranged on the side surface of a liquid area from top to bottom; a gas exhaust opening, a ventilating and moisture exhausting device, an infrared heating lamp and a box temperature sensor are fixedly and sequentially arranged on the top side surface of the test box body from right to left; and a ultraviolet lamp, an air blower, a nozzle, a water spray pump, a liquid level controller, a dissolved oxygen sensor and a water drain opening are arranged on the opposite side of the test box corresponding to the side surface provided with the drive pull rod. The marine splash environment simulation test device has simple structure and higher automation degree, is convenient to operate, needs no staff attendance, and can simulate marine splash environment in a laboratory, so as to analyze and evaluate the corrosion and aging of the material.