8109 results about "Simulation test" patented technology

The invention discloses a short circuit simulation test circuit which is used for testing and examining the operation condition of a converter valve. The short circuit simulation test circuit comprises a capacity charge power supply module, a fault current generation circuit and a converter valve charging source module, wherein the cathode of the capacity charge power supply module is connected with a positive input end of the fault current generation circuit while the anode of the capacity charge power supply module is connected with a negative input end of the fault current generation circuit; a positive input end of the fault current generation circuit is connected with the anode of the converter valve charging source module and a high voltage output end of the converter valve respectively, and the negative output end of the fault current generation circuit is connected with the cathode of the capacity charge power supply module and the low voltage output end of the converter valve respectively. The test circuit can be used for testing and examining the fault operation condition of converter value. The invention further discloses a test method of the short circuit simulation test circuit.

An electronically adjustable shock absorber, and a system, method, and algorithm for developing a vehicle suspension. The shock absorber has damping characteristics that can be adjusted electronically to match a desired set of damping characteristics. The test method includes closed loop control of the electronically adjustable shock to achieve user-provided damping characteristics. The characteristics can be selected from a graphical user interface to simulate different internal flow passages of a shock absorber. Some embodiments make possible the simulated testing of different hardware embodiments, without the need to make the actual shock absorbers and without the need interrupt the vehicle suspension testing for multiple shock absorber installations.

The invention relates to a method and a system for a semi-physical simulation test of visual unmanned aerial vehicle flight control and belongs to the technical field of visual system simulation. The method includes building a dynamic model of an unmanned aerial vehicle system, initializing the dynamic model, enabling an unmanned aerial vehicle to fly along the track provided by the ground, feeding flight rudder quantity information to the dynamic model to be updated, driving a three-dimensional model of the unmanned aerial vehicle through the updated dynamic model to conduct simulation and outputting simulation image and data in real time. A system based on the method is further provided. The method and the system provide effective ways and development environment for design, experiments and verification of the flight control law, have the advantages of being simple, flexible, quick, vivid and real-time, improve simulation efficiency of a flight control system, reduce test risk and test cost of the unmanned aerial vehicle and shorten development period.

The invention discloses a multifunctional geotechnical model test chamber device adopting photogrammetric technology. The multifunctional geotechnical model test chamber device comprises a model test chamber body, a loading and testing part, a movable pile baffle, a downward-moving control part, a displacement testing system and the like. The whole-filed displacement is measured by using the photogrammetric technology. The soil arch effect demonstration of 20 different pile spacing ratios, the pile-supported embankment filler particle soil arch effect and a compound foundation cushion layer effect simulation test under the rigid foundation can be realized. Meanwhile, the geotechnical model test chamber device can also carry out simulation such as stress and deformation simulation of buried pipes, slope deformation, excavation of foundation pits, stress and deformation of an enclosing structure and the like by using the test chamber.

The present invention discloses an integrated universal simulation test system for electric network scheduling and electric quantity collection, a telemechanical terminal is connected with a test control device through an instation network, an electrical energy remote terminal is connected with a plurality of electric energy meters. The simulation test system is provided with a portable computer, and has a function of processing the remote measurement, remote signaling, remote control data of an automatic SCADA system and electric energy meter data of a electric quantity collection terminal simultaneously or separately; a specification analysis function of the automatic SCADA system and electric quantity collection system; the specification is an usual specification, or is added with a plug-in card mode. By means of the technical scheme, the system has stable operation and perfect functions; the system is portable and is flexible to be employed; the system has high reliability and well expandability, openness, compatibility, and excellent maintainability and easytouse; it is capable of expanding and modifying the specification expediently, and it is capable of plugging and playing.

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 embodiment of the invention discloses a driverless vehicle simulation test apparatus and an electronic device. The driverless vehicle simulation test apparatus comprises: a simulation scene establishing module, which is used for establishing a simulation scene and generating simulation data of the simulation scene; and a test operation module, which is used for obtaining an operation result after a driverless test algorithm conducts an operation on the simulation data and determining the performance of the driverless test algorithm on the basis of the operation result. The simulation sceneis established and the operation result of the driverless test algorithm is obtained, so that the performance of the driverless test algorithm is determined. In this way, an automobile simulation test scheme for testing complete automatic driving schemes is achieved.

The invention discloses a three-axis test device and methods for sediments including gas hydrates, relating to a testing technology of sediments including gas hydrates. The device is used for making samples with different hydrate contents and uniform distribution by utilizing first circulation and saturation and then cooling of gas-containing saturated water in the samples and then carrying out three-axis shear on the sample in a certain confining pressure so as to determine the mechanical parameters of the samples. Based on the device, a set of methods for testing the three-axis mechanical parameters of the sediments including gas hydrates is formed, and the mechanical parameters measured by the method are closer to the natural state. The device and methods disclosed by the invention are used for carrying out an accurate simulation test on the marine gas hydrate forming process in a laboratory, providing technical assurance and support for the further study of physical and mechanical properties of the marine soil including gas hydrates, and promoting the further development of the research powerfully.

The embodiment of the invention provides an in-loop rapid simulation test system of an unmanned vehicle. The system comprises: a virtual simulation test subsystem used for generating a virtual test scene and transmitting a pavement state control instruction to a test bench control subsystem; the test bench control subsystem used for simulating a pavement state, as well as estimating the driving performance of the unmanned vehicle according to driving parameters of the unmanned vehicle; and an unmanned vehicle control subsystem used for performing driving control on the unmanned vehicle according to the virtual test scene. The above system adopts the simulation test mode of combining the virtual reality technology with the hardware in-loop, so that a controllable, repeatable and effective in-loop rapid simulation test of the unmanned vehicle can be achieved indoors; and furthermore, all extreme or special road conditions are exhausted as much as possible, so that the safety and the reliability of the unmanned vehicle before start off can be fully guaranteed. The embodiment of the invention further provides an in-loop rapid simulation test method of the unmanned vehicle.

A ground simulation-test system of satellite attitude based on satellite network comprises simulation test unit of parts grade, digital simulation test unit of system grade and semiphysical simulation test unit of system grade. It is featured as using simulation test unit of parts grade and digital simulation test unit of system grade to provide physical data basis for semiphysical simulation test unit of system grade. The ground simulation testing-method of satellite attitude based on satellite network is also disclosed.

The utility model relates to a large-scale multifunctional phytotron system for electrical tests, in particular to an artificial simulation test system with external insulation power transmission and transformation equipments in complex atmospheric environment, belonging to the high voltage and insulation technical field. The system comprises a phytotron body (1), a wall bushing (2) for leading-in the power supply, a wind speed simulation apparatus (3), a refrigeration system (4), an evacuation system (5), a steam fog system (6), a water treatment system (7), an ice coating, fog spraying and raining system (8), a hook and rotating apparatus (9) and a test environment measurement system (10). The large-scale multifunctional phytotron system of the utility model enables to simulate altitude of 232 to 7000m, atmospheric pressure of 98.6 to30KPa, temperature of -45 DEG C to 70 DEG C, wind speed of 0 to 12m/s and water electrical conductivity of 10 to 5000MuS/cm, and enables simulation and regulation of complex meteorological environment such as high altitude, ice coating, fog spraying, raining and other environments.

The invention discloses a fine simulation test device and a fine simulation test method for slope water erosion. The fine simulation test device comprises an underframe provided with trundles and a test soil groove connected with the underframe, the test soil groove is arranged above the underframe, one end of the test soil groove is hinged to one end of the underframe, and a water tank matched with the test soil groove is arranged at the other end of the test soil groove. A hydraulic rod is arranged between the test soil groove and the underframe, an equalization pond is arranged between thetest soil groove and the water tank, the equalization pond is communicated with the water tank through a water conveying pipe, the water conveying pipe and a water pump are arranged on one side of the water tank, a water discharging pipe is communicated with the lower portion of the water tank, a three-dimensional laser scanner is arranged in front of the test soil groove, a railfall device is arranged right above the test soil groove, and a flow collecting opening connected with the test soil groove is arranged at the end of the test soil groove hinged to the underframe. The fine simulation test device and the fine simulation test method for the slope water erosion have the advantages of being capable of controlling slope soil bulk density, vegetation types and cover degree manually, simulating soil water erosion conditions under different site conditions, and studying influences and response theories of all factors on soil water erosion under different underlying surface conditions.

Simulation test equipment for validating the reliability of satellite attitude control and a test method thereof belong to the field of satellite attitude control. The test equipment comprises a ground simulation support module, a fault injection module and a satellite-born module, wherein, the ground simulation support module includes a monitoring terminal, a satellite model, a signal exciting source and a moment reverse-solution unit; the fault injection module includes an analog-to-digital converter, a signal transfer circuit, a fault injection processor, a man-machine interface unit and a digital-to-analog converter; and the satellite-born module includes a sensor, a satellite-born controller and an actuator. The test method comprises the following steps of: fault model setting; satellite initialization; orbit and attitude information renewal; the satellite-born controller collects signals of the sensor and outputs actuator command signals to the fault injection module; the actuator receives actuator pseudo command signals and outputs feedback signals to the fault injection module; the moment reverse-solution unit collects the pseudo feedback signals output by the fault injection module and outputs moment control signals to the satellite model. The equipment and the method of the invention have high feasibility and high performance-price ratio.

The invention discloses a performance testing system and method for an autonomous vehicle. The method comprises the steps: obtaining a testing demand, and generating an offline testing parameter and/or online testing parameter according to the testing demand, wherein the offline testing parameter is used for configuring the offline simulation test of equipment on a to-be-tested vehicle, and the online testing parameter is used for configuring the real drive test of the to-be-tested vehicle; carrying out the offline simulation test of the to-be-tested vehicle based on the offline testing parameter, and obtaining a testing result; carrying out the real drive test of the to-be-tested vehicle based on the online testing parameter, and obtaining a testing result. The system and method providedby the invention can achieve the integrated test, comprising the offline test and the real drive test, of the autonomous vehicle according to the actual testing demand. Compared with the prior art, the system and method can obtain a more accurate and complete testing result.

The invention discloses a visual intersected fracture flowing water grouting test device and method. The visual intersected fracture flowing water grouting test device comprises a grout collection device and further comprises an intersected fracture platform. The intersected fracture platform comprises supporting frames, an intersected fracture test room arranged on the supporting frames, intersected fractures arranged on the inner wall of the intersected fracture test room, flow sensors arranged inside the intersected fracture test room, and pressure sensors arranged inside the intersected fracture test room. The visual intersected fracture flowing water grouting test device further comprises a flowing water supply device used for injecting water for the intersected fracture test room and an air pressure grouting device used for grouting for the intersected fracture test room, and the intersected fracture test room is connected with the grout collection device. The visual intersected fracture flowing water grouting test device and method can achieve grouting simulation test and analysis under the conditions of the intersected fractures and flowing water.

The invention provides an impact characteristic simulation test apparatus of an earthing device and a method thereof, and belongs to the simulation test field of the earthing device. The impact characteristic simulation test apparatus comprises an impact current generator, a semispherical test bath, a simulation earthing device, a core penetration type current sensor, an impact voltage divider, a wideband digital oscilloscope, a coaxial shielding cable and the like. According to the method, by employing the apparatus in the invention, an impact simulation test of the earthing device is carried out. According to the invention, a soil discharge process that a real lightning current goes through the earthing device and flows to surrounding soil is simulated accurately, and an impact earthing impedance of the earthing device and an impact flow rule of the earthing device are measured. The apparatus has the characteristics of high reliability, good security, low test cost and the like. The apparatus and the method can be widely applied to measurement of the impact impedance and the impact flow rule of the earthing device under an effect of a heavy impact current, and are especially suitable for measurement of the impact impedance and the impact flow rule of the earthing device under an effect of a lightning current.

The embodiment of the invention discloses a driverless vehicle simulation test method. The driverless vehicle simulation test method includes the following steps: establishing a simulation scene, andgenerating simulation data of the simulation scene; and obtaining an operation result after a driverless test algorithm conducts an operation on the simulation data, and determining the performance ofthe driverless test algorithm on the basis of the operation result. The simulation scene is established and the operation result of the driverless test algorithm is obtained, so that the performanceof the driverless test algorithm is determined. In this way, an automobile simulation test scheme for testing complete automatic driving schemes is achieved.

The invention discloses a simulation test system of train control system. A ground integrated simulation system can receive train operation-related information from a train-carried simulation system, and receive train information corresponding to the train ID from a CTC interface simulation system. The CTC interface simulation system carries out data communication with a wireless blocking center device, the ground integrated simulation system, and the train-carried simulation system. A TSRS interface simulation system carries out data communication with the train-carried simulation system andthe wireless blocking center device. The train-carried simulation system is used for simulating speed signals, braking signals, a handle position, and responder signals of a train-carried system, andrecording communication status of the train in real time. The train-carried control device is used for receiving ground information, generating speed mode curves and monitoring the running of the train, and the wireless blocking center device is used for managing and controlling the running of the train.

The invention discloses a triaxial impact ground pressure true simulation test system. The triaxial impact ground pressure true simulation test system is characterized by comprising a flexible loading unit, a confining pressure loading unit and an impact loading unit, wherein the flexible loading unit is used for applying vertical pressure on a test piece through a loading oil cylinder and a counterforce steel strand, the confining pressure loading unit is used for enabling the test piece to be under the condition of triaxial stress, the impact loading system is used for applying impact load on the test piece, the test piece is destroyed under the conditions of high stress and impact disturbance, the strength of the test piece is reduced, the test piece generates a certain displacement, in the process, the counterforce steel strand in the flexible loading unit is used for quickly supplementing load to the test piece, and further the extrusion and the action of external surrounding rocks to coal and rock masses are simulated. The triaxial impact ground pressure true simulation test system can be used for well simulating the occurring conditions of impact ground pressure, and the triaxial loading conditions are especially applicable to the simulation of gravity type impact ground pressure in a mining roadway.

The invention discloses a simulation test bed for an automatic gearbox controller. The test bed comprises a host computer, a real-time object machine, a signal generating and measuring part, an engine electric controller and a plurality of electromagnetic valves, wherein the host computer, the real-time object machine, the engine electric controller and the electromagnetic valves are connected with the signal generating and measuring part respectively; the host computer downloads a simulation model of an automatic transmission vehicle dynamic assembly to the real-time object machine; an engine model, an automatic gearbox model and a whole vehicle dynamic model are integrated in the simulation model of the automatic transmission vehicle dynamic assembly; the simulation model of the automatic transmission vehicle dynamic assembly contains hardware-in-the-loop of the gearbox controller and hardware-in-the-loop of the engine electric controller to form a virtual vehicle gearbox controller develop simulation platform close to a real vehicle, can greatly improve the developing test efficiency of the gearbox controller under a condition of ensuring the software quality of the gearbox controller. The invention also discloses a method for establishing the simulation model of the automatic transmission vehicle dynamic assembly.

The invention discloses a device and a method for a physical simulation test of the stability of a deep tunnel surrounding rock and relates to a rock-soil mechanic technology. A structure of the device is that a pressure plate is covered on a sample in a deep tunnel rock body model instrument, and a vertical pressure system is arranged on the pressure plate and used for loading so as to simulate and exert gravity stress. A miniature shield machine drills into the sample from a drilling surface, and the miniature shield machine, a stepless speed changing box and a motor are sequentially connected to achieve drilling. Eight optical fibers and six strain gauges are distributed in the sample, the optical fibers are connected with a distributed optical fiber monitoring system, and the distributed optical fiber monitoring system and the strain gauges are respectively connected with a data acquiring system so as to achieve detection and recording. By means of the device and the method for the physical simulation test of the stability of the deep tunnel surrounding rock, a development and change law of stress strain when a deep tunnel rock body is excavated in tunnel construction can reappear accurately, and a novel solving path for researching the stability of the grotto surrounding rock and forming mechanism of rock burst in the tunnel construction.

The invention discloses a parallel twelve-freedom loading device, used in spatial loading test and fatigue test on aviation material, comprising a Stewart active parallel six-freedom loading device, a SPS six-dimension force/torque sensor and a SPS inactive parallel six-freedom adjuster, wherein the Stewart active parallel six-freedom loading device simulates the spatial motion, the active and inactive platforms of inactive parallel six-freedom adjuster follows to operate and draw or compress the bidirectional isomorphism spring device, to test wide force dynamical load, to supply high accuracy and better reliability to the six-freedom wide force dynamic synchronous loading system, to be used in spatial-ground semi-physical simulation test or the like.