982 results about "Environmental simulation" patented technology

Methods and apparatus are disclosed for processing an audio sound source to create four-dimensional spatialized sound. A virtual sound source may be moved along a path in three-dimensional space over a specified time period to achieve four-dimensional sound localization. The various embodiments described herein provide methods and systems for converting existing mono, 2-channel and/or multi-channel audio signals into spatialized audio signals have two or more audio channels. The incoming audio signals may be down-mixed, up-mixed or otherwise translated into fewer, greater or the same number of audio channels. The various embodiments also describe methods, systems and apparatus for generating low frequency effect and center channel signals from incoming audio signals having one or more channels.

The invention relates to the technical field of bearing testing, in particular to a bearing integrated dynamic performance test device and method. The bearing integrated dynamic performance test device comprises a drive system, a transmission system, a measurement and control system, an environmental simulation system and a mechanical body structure. A motor is adopted by the drive system for driving. The measurement and control system controls the rotation speed of the motor. The transmission system is in a belt transmission mode or a coupler transmission mode. The measurement and control system is provided with a force sensor, a strainmeter, an eddy current transducer, a rotation speed sensor, a laser displacement sensor, a temperature sensor, a magnetic oil residue sensor, a pressure sensor, a flow sensor, an oil temperature sensor, an acceleration sensor and other related sensors used for bearing testing. The control system is driven in a servo mode, and is composed of a frequency converter, a hydraulic solenoid valve, a heating controller, a flow control device and a pressure control device. The environmental simulation system is adopted for simulating a real bearing testing working condition, and the performance and service life testing of the real bearing testing working condition is achieved.

The invention relates to a large multifunctional environmental simulator for electrical tests, which comprises an environmental stimulation chamber and is characterized in that an air heat-exchange circulation system and an ice-melting system are arranged in the environmental stimulation chamber; and the environmental stimulation chamber further comprises an ice-coating, rain-exposing and ultrasonic-atomizing system, a water treatment system, a heat-fogging system, a cooling water circulation system, a refrigeration system, a vacuuming and defogging system, a measurement and control system and an ultra-high voltage power supply system for providing a high-voltage charging state for test-pieces. By achieving the skillful coordination among the systems and the uniform operation control by the measurement and control system, the large multifunctional environmental simulator integrates various testing functions of environmental simulations, such as high-altitude, ice-coating, contamination, rain-exposing and other simulations into a whole. Therefore, the invention is widely suitable for the testing process for large multi-parameter environmental simulations.

The invention discloses a multi-factor comprehensive simulation accelerated testing device for a climatic environment. The multi-factor comprehensive simulation accelerated testing device comprises a testing box in which a sample frame is arranged, a light source system, an intelligent spraying system, a temperature and humidity regulating system, a circulation air system and a control system. With the adoption of the device, an environmental effect with five environmental factors, such as illumination, corrosive medium, temperature, humidity and air speed can be simultaneously simulated or strengthened; actions, such as radiation power variation, atomizing (or spraying), heating (or cooling), air speed and the like of the light source can be controlled by using an PLC (programmable logic controller) or a singe-chip so as to simulate and strengthen a plurality of typical climate environments; drying and watering circulation on the surface of a sample in the test box can be controlled well through adopting intelligent atomizing (or spraying) control; and accelerated ratio and relevance are improved. The testing device can be used for developing two kinds of different light aging test and damp heat test so as to achieve the effect that one box has multi purposes.

The invention discloses a vacuum high/low temperature environmental simulation electromechanical transmission mechanism comprehensive performance experimental system, which comprises an experimental platform, a driving assembly, a vacuum high/low temperature experimental assembly, a normal temperature and normal pressure experimental assembly and a loading assembly. The driving assembly comprises a servo motor, an input end torque and speed sensor and an input end angle encoder; the vacuum high/low temperature experimental assembly comprises vacuum high/low temperature environmental simulation equipment, an optical platform, and input and output end magnetic fluid sealing shafts; and the loading assembly comprises an output end angle encoder, an output end torque and speed sensor and a torque motor. The vacuum high/low temperature environmental simulation equipment has low cost, the installation of the driving assembly and the loading assembly is performed outside a vacuum tank, and the installation and debugging are convenient. Due to the adoption of a modular design, the experimental system can test the comprehensive performance of a speed reducer and other rotating mechanisms under the conditions of space environment and normal temperature and normal pressure environment on the same experimental system, and has the advantages of strong adaptability of the equipment and high detection accuracy.

This invention relates to one large integral environment analogue experiment device, which comprises high temperature cabinet, air cooling system, vacuum system, rapid conversion track set and remote test and control system, wherein, the cabinet and temperature cabinet adopts gate to gate parallel distribution; the two cabinet sets rapid conversion track in charge for test parts rapid conversion; the air cooling system and vacuum system is in charge for temperature cabinet cool volume and to lower inside pressure; the temperature cabinet is in constant box structure composed of cooling board recycling system for analogue.

A system for modifying a model of a chemical reaction or biochemical process responsive to experimental results generated by an in situ experiment conducted on an experimental platform includes a simulation engine and an analysis environment. The simulation engine generates an expected result from a model of the chemical reaction or biochemical process. The analysis environment communicates with the simulation engine, gathers data from an experimental platform, and compares the expected result to data gathered from the platform.

The invention relates to the field of air quality monitoring, in particular to an environmental simulation test box for quantitatively analyzing PM2.5 (fine particulate matter) absorbing capability of plants. The environmental simulation test box comprises a closable box body, a PM2.5 generator, a PM2.5 measuring device, a constant-temperature constant-humidity device, a lighting simulating device, a raining simulating device and a wind simulating device, wherein the PM2.5 generator and the PM2.5 measuring device are communicated with the box body, and the constant-temperature constant-humidity device, the lighting simulating device, the raining simulating device and the wind simulating device are disposed in the box body. By the structure, influences of natural environments can be isolated, environmental parameters can be simulated quantitatively, and accordingly PM2.5 absorbing capability of plants can be measured accurately, and scientific and effective basis is provided for quantifying PM2.5 absorbing capability of various plants and forest planting selection.

The invention relates to hydromechanical device, in particular to a wind tunnel used for comprehensive climatic environment tests and aerodynamic tests of railway vehicles. The wind tunnel comprises a tunnel body. The tunnel body is an annular flow channel. A ventilation system used for generating air flow is arranged in the tunnel body. The tunnel body is further provided with an environmental simulation system and an aerodynamic simulation system. The environmental simulation system is used for controlling the weather conditions in the tunnel body. The aerodynamic simulation system is used for enabling the air flow to form a pneumatic flow field. By the adoption of the wind tunnel, the climatic environment tests of the whole real railway vehicle can be carried out, and the aerodynamic tests of a scale model of the railway vehicle can also be carried out. On the basis that the demands for the railway vehicle tests can be met, the wind tunnel can also be used for the related environment tests and the related aerodynamic tests in the fields such as the aerospace field, the automobile field and the construction field.

The invention discloses a simulation device for karst collapses. The device comprises a karst collapse environmental simulation device, a hydrodynamic condition simulating device and a monitoring system, wherein the karst collapse environmental simulation device comprises a box body and a karst simulation device; an opening is formed in the top of the box body; the karst simulation device is arranged at the bottom of the box body; the hydrodynamic condition simulating device comprises a water supplying device and a water discharging device; the monitoring system is distributed in the karst simulation device and is used for monitoring a critical state of the karst collapses. The simulation device for the karst collapses can be used for simulating the karst collapses under different collapse types and different working conditions.

The invention discloses dust environment simulation equipment, which comprises a dust generation device, a wind tunnel, a dust collector and a fan. The wind tunnel comprises a wind inlet section, a turbulence section and a testing section. The inner passage of the wind inlet section is horn-shaped. The dust outlet of the dust generation device is formed at the large-aperture end of the wind inlet section. The small-aperture end of the wind inlet section is communicated with the turbulence section. A turbulence structure is arranged on the turbulence section. One end of the testing section is communicated with the turbulence section and the other end of the testing section is communicated with the dust collector. The fan is communicated with the dust collector. An observation window which can be opened and closed is arranged on the testing section. A dust concentration sensor which is used for detecting internal dust concentration is arranged in the testing section and is communicated with an electric control device. The electric control device is electrically connected with the dust generation device. The simulation equipment can simulate a uniform-concentration dust environment, the concentration is adjustable and testing results obtained through product testing by using the simulation equipment are more accurate.

The invention relates to a driving simulation control system based on BIM simulation environment. Traffic safety analysis mainly starts with road alignment design and traffic accident data, and psychological and physiological status change features of a driver and running status data of a vehicle under different road environments cannot be obtained. The system comprises a driving operation module, a driving simulation platform control module, an annular screen fusion display module, a vehicle performance acquisition module and a road characteristic acquisition module, which are all connected to a central processor. The central processor is connected with a BIM simulation environment module. Through the BIM simulation system, different road environments are established accurately, and operating information of the driver is obtained; through control algorithm for a multi-freedom platform carried out by the driving simulation operation module, and an environmental simulation algorithm for simulating various extreme weathers, road feel and vehicle feel can be simulated completely, and real-time acquisition and operation can be carried out on the driver and the vehicle condition; and data of multiple sensors can be collected, transported, processed, displayed and stored through modular design.

The invention provides a freeze-thawing and weathering environment simulation system for compacted soil and a test method of the freeze-thawing and weathering environment simulation system. The devicecomprises an LED fluorescent lamp, liquid nitrogen refrigerating circulating equipment, a freeze-thawing model box, nitrogen heating circulating equipment and wind making equipment which are placed on an experimental platform, wherein a soil test sample is arranged in an inner cavity of the freeze-thawing model box. During working, a computer controls the refrigerating circulating equipment, thenitrogen heating circulating equipment and the wind making equipment. A dynamic camera monitors a freezing character of the soil test sample. A test method of the device comprises test steps of arranging sensors, compacting the soil test sample, installing monitoring equipment, debugging a data acquisition processor and a freeze-thawing circulating controller and the like. The device can control the acting time of freeze thawing cycle to realize automation of winter frozen soil simulation, can observe and measure a displacement change of soil and can observe mesoscopic characteristics in a test process of the test sample.

The invention relates to the technical field of spacecraft environmental simulation, and discloses an infrared lamp array heat-flow density calibration device. The infrared lamp array heat-flow density calibration device is characterized in that the material and shape of a set simulation piece is in accordance with a product to be calibrated, the outer side of the simulation piece is provided with a heating piece, a thermal control coating is sprayed on the outer side of the heating piece, and a thermal-protective coating is arranged on the inner side of the simulation piece; and a thermocouple is arranged between the simulation piece and the thermal-protective coating, and an infrared lamp array is arranged near the outer side of the simulation piece. The invention also discloses an infrared lamp array heat-flow density calibration method, wherein the simulation piece is respectively heated by energizing the infrared lamp array and by utilizing the heating piece, and the temperature fields in the two heating methods are compared; when the two temperature fields are the same, the heating power of the heating piece and the energizing current of the infrared lamp array are calibrated. The infrared lamp array heat-flow density calibration device provided by the invention solves the problem that the precision cannot be tested when the external heat flow is simulated by the infrared lamp array in a complicated surface spacecraft vacuum thermal test, thereby improving the stability of the test results; and through the calibration of the lamp array, the consumption of the heat flow sensor is lowered, and the test cost is lowered.

A simulation tester for self healing of asphalt concrete cracks comprises a main frame, a test control and data collection system, an environment simulation box, a rigidity water tank, a test piece, a test piece limit clamp, a wheel load simulation device, a test piece healing force application device, a loading frame horizontal reciprocating moving mechanism, a temperature environment control device and a water circulation system simulating humidity environment. The main frame is provided with the environment simulation box which is at least composed of an inner rigidity layer, an outer rigidity layer and a middle heat insulation layer. The rigidity water tank is installed on the bottom wall in the middle in the environment simulation box, the test piece and the test piece limit clamp are installed in the rigidity water tank, the wheel load simulation device is arranged vertically above one side of the test piece and contains test wheels in rolling fit with the corresponding test piece, a test piece healing force application and test device is arranged horizontally on the other side of the test piece, the wheel load simulation device contains a loading frame which is provided with the loading frame horizontal reciprocating moving mechanism, and the water circulation system simulating humidity environment is arranged under the rigidity water tank. The simulation tester is high in automation degree, accurate in control, capable of simulating and researching self healing actions of the asphalt concrete cracks under various work conditions, convenient to operate, safe and reliable.

The invention relates to a hybrid power/electric vehicle power motor/battery hardware-in-loop test bed, in particular to a motor control and braking energy recovery strategy test system under energy-saving hybrid power/electric vehicle-mounted power motor/battery hardware-in-loop vehicle running whole-environmental simulation. A simulation test bed is constructed by using physical objects such as a power motor, a battery pack, power drivers such as IGBT (Insulated Gate Bipolar Transistor) and the like. Power motor control strategies, braking energy recovery strategies and overall vehicle control effects of various vehicle models under whole environment can be quickly verified by cooperating high-quality simulation environment through parameter setting in the established semi-physical simulation system, and the verifications of vehicle motor control strategies and braking energy recovery strategies are dynamically integrated. When energy is saved, the capital investment to real vehicle tests can be reduced, the development cost is saved, the development period is shortened, and the times and the dangerousness of real vehicle tests are reduced.

The invention relates to an adaptive learning path planning system based on reinforcement learning. The system comprises an environmental simulation module, a strategy training module and a path planning module. In the whole process, the ability value of the student at each moment is obtained according to the improved project reflection principle; based on a Markov decision process, a complex learning environment is simulated, a reinforcement learning algorithm is reasonably applied to be combined with a student historical learning track offline training path planning strategy, and finally, alearning path is adaptively planned for the student online according to the trained strategy. Finally, based on the idea of reinforcement learning, the complex scene learned on the online education platform is constructed in the framework of the Markov decision process, the purpose of improving the efficient obtaining capability is achieved, continuous recommendation of learning resources is provided for students, the optimal learning path is planned, and therefore the learning effect and learning efficiency of the learner are improved.

The invention discloses a dynamic simulation test method of a plastic supporting bearing used in automobile suspension and a testing machine. The testing machine is composed of a drive unit, a loading unit, a bed and an optional environmental simulation test auxiliary unit; a transmission shafting 5 in the drive unite is fixed in a work table 16 of the bed 17, the lower end of the transmission shafting 5 is linked with a torque sensor 4, the upper end of the transmission shafting is linked with a coupling 15 and a test shaft 14 is fixed in a groove of the transmission shafting, a bearing to be tested 13 is arranged on the transmission shafting; a frame 6 is fixed on the work table, a radial loading oil cylinder 7 is horizontally fixed on the frame, a sensor 8 is arranged on the head part of the radial loading oil cylinder 7 and abuts on a loading head 9 on the side of a loading block 12, an axial loading oil cylinder 10 is vertically fixed on the frame, a sensor 11 is arranged on the head part of the axial loading oil cylinder 10 and abuts on the loading block, the loading block is arranged on the bearing to be tested; a heating test or a turbid water test can be chosen for the work table or the coupling. During test, a variable frequency motor 1 is directly connected with a reduction gear 2 to drive a multi-link mechanism 3 and converts into swing of the test shaft and drives the tested bearing, and a computer monitors the whole test process and records data.

A method for producing video simulations uses two-dimensional HDR images and LIDAR optical sensor data to deliver a photo-realistic simulated sporting event experience to a display. The playing environment is mapped using a data collection process that includes contour mapping the environment, photographing the environment, and associating the images with the contour mapping data. Preferably, the HDR camera is used in conjunction with a differential global positioning system that records the position and heading of the camera when the photo is taken. A polygon mesh is obtained from the contour data, and each image is projected onto a backdrop from the perspective of a simulated camera to create a set, which is then stored in a set database. The simulated environment is created by selecting the set needed for the simulation and incorporating simulation elements into the set before rendering the simulated camera's view to the display.

The invention belongs to the field of environment simulation and control, and relates to a dynamic aviation thermal power testing system and a rapid temperature and pressure control method which are mainly used for the airplane environment control system ground simulation test and are capable of achieving rapid temperature, pressure and flow adjustment and carrying out rapid temperature increasing and reducing and pressure increasing and reducing of an environment control system and the full-flight envelope dynamic simulation test. According to the dynamic aviation thermal power testing system, the project achieving difficulty of a heater is lowered through an indirect heating mode, and the possible problem of dried burning due to direct heating can be avoided. The temperature and pressure are independently controlled, and the temperature and pressure coupling effect is eliminated. A rapid adjusting mechanism is arranged in front of a heat exchanger, the project achieving difficulty of the adjusting mechanism is lowered, accordingly, the reliability of the system is improved, and the manufacturing cost of the system is reduced. The system is further provided with a heat regenerator, part of waste heat can be recycled, the system efficiency is improved, and the consumed energy of the system is reduced.

The invention relates to the technical field of automatic driving of intelligent vehicles, and discloses an intelligent connected vehicle environment simulation system based on complete vehicle hardware-in-loop. The system comprises a hub dynamometer, a control system of the hub dynamometer, a steering and transverse movement platform, a moving target, an environment simulation system, a positioning simulation system, a V2X simulation system, a central control system, a vehicle dynamics model, a vehicle steering and transverse movement platform control unit and a data acquisition module. According to the intelligent connected vehicle environment simulation system based on complete vehicle hardware-in-loop, the whole vehicle comprising a sensor can be taken as a tested object; a test systemintegrates physical weather and traffic simulation devices, so that the test precision and credibility of the system are greatly improved, meanwhile, the test efficiency can be improved; and the system is an effective test tool for accelerating realization of intelligent connected vehicle products.

The invention relates to a general external field wireless test system, including a track, a test carriage for carrying a test terminal and running on the track, an antenna for providing at least one wireless network environment of wireless system and forming at least one track coverage cell on the track, and a control center for controlling the running mode of the test carriage and the work mode of the antenna. The invention can realize various external field wireless environmental simulations, high speed wireless test environmental simulation, various switch tests, test environmental simulation in which various wireless systems coexist, wireless advanced research, wireless arithmetic research, wireless equipment test, terminal test environmental simulation, network performance test of free bearing mobile terminal in order to analyze special wireless network performance, locate special wireless network exception and provide convenient wireless test environment for new technology experiment and frontier study of wireless network.

The invention discloses a full-link full-process simulation system and method for an airborne infrared stabilized sighting system and aims to achieve full-link full-process simulation of the airborne infrared stabilized sighting system in laboratory conditions. The system comprises a target simulation module, a background simulation module, an environmental simulation module, a sensor simulation module, a carrier platform simulation module, an airborne stabilized sighting servo control simulation module and an infrared image generation module. The method includes the steps of 1, target simulation; 2, background simulation; 3, atmospheric effect simulation; 4, sensor effect simulation; 5, initial generation of infrared images; 6, judgment of whether a carrier platform is stabilized or not; 7, stabilized control simulation; 8, infrared target detection and tracking simulation; and 9, infrared image generation. The system has the advantages that considered links are complete, and dynamic simulation and signal stream transmission are achieved. The method has the advantage that infrared target tracking can be achieved.

The invention discloses a zero (micro) gravity suspension method and device with a zero-frequency vibration isolation characteristic and relates to the technical field of zero gravity or micro gravity environmental simulation in the outer space. The problems of space ground simulation, low-frequency and ultralow frequency vibration isolation and the like are solved. The series of suspension devices can be each substantially seen as being formed by connecting a vertical spring and a vertical spring which support gravity support through a connecting rod and a suspended object. According to the basic principle, support force which is equal to the magnitude of the gravity and opposite to the direction of the gravity is provided through geometric nonlinearity arrangement of a spring connecting rod mechanism, so that the resultant force acted on the suspended object within the device design range is zero, and thus the suspended object is in the suspension state. The zero (micro) gravity suspension device can be used for space zero and micro gravity environments including ground simulation experiments such as spacecraft docking, large space flexible structure dynamics performance tests and astronaut training. Through the suspension characteristics of the zero (micro) gravity suspension method device, the problems of low-frequency and ultralow frequency vibration isolation can be solved effectively, and the defect that through a traditional vibration isolation theory, system resonance is difficult to be avoided is overcome.

The invention discloses a turbine blade thermal barrier coating working condition simulation experiment test system. The system comprises working state simulation equipment, service environment simulation equipment and detection equipment; the working state simulation equipment is arranged at one side of a to-be-tested turbine blade thermal barrier coating, connected with the to-be-tested turbineblade thermal barrier coating and used for simulating the high-speed rotation working state of the to-be-tested turbine blade thermal barrier coating; the service environment simulation equipment is arranged at the other side of the to-be-tested turbine blade thermal barrier coating and used for simulating the service environment of the to-be-tested turbine blade thermal barrier coating in the high-speed rotation working state; the detection equipment is used for detecting damage generated when the to-be-tested turbine blade thermal barrier coating rotates at high speed in the service environment. By means of the experiment test system, the working state and the service environment of the to-be-tested turbine blade thermal barrier coating are simulated, so that key damage parameters of theturbine blade thermal barrier coating in the failure process are conveniently detected in real time, and technical support is provided for process optimization and automatic design of the thermal carrier coating.

The invention discloses injecting equipment and an environment simulation system based on the injecting equipment, wherein the injecting equipment and the environment simulation system are used for the direct connection test of a novel stamping engine. According to the technical scheme of the invention, the equipment and the system solve the problems in the prior art that an existing test environment simulation system cannot simulate the air inflow condition and meet the requirement on the injecting capacity, and is low in injecting efficiency and large in investment scale. The injecting equipment comprises a plurality of steam injecting units arranged on the gas collecting pipe of the simulation system. Each steam injecting unit comprises a high-flow steam generator and a set of two-stage steam injection pumps, wherein the set of two-stage steam injection pumps is formed through the serial connection of a first steam injection pump and a second steam injection pump. The output end of the high-flow steam generator is respectively connected with the first steam injection pump and the second steam injection pump. The first steam injection pump is connected with the gas collecting pipe through a steam injection pipe. A first steam injection and isolation valve is arranged between the first steam injection pump and the gas collecting pipe. A second steam injection and isolation valve is arranged between the first steam injection pump and the second steam injection pump.

A system and method for simulating a real roadway environment that can be used for testing of a real connected autonomous vehicle (CAV) on roadways using augmented reality to add simulated virtual environmental objects such as additional vehicles, pedestrians, and other obstructions to the nearby surroundings seen by the CAV under test. The method carried out by the system includes: receiving vehicle status information indicating the location of a connected real vehicle as it moves along a roadway; and generating a simulated environment of the real vehicle on the roadway using a mapped model of the roadway and the vehicle status information. The simulated environment includes one or more virtual objects such as vehicles, pedestrians, or other obstructions, and these simulated virtual objects may be sent to the real vehicle for testing of its response without requiring the use of real vehicles, pedestrians, or other obstructions.