422 results about "Simulation test" patented technology

The application relates to the technical field of vehicle simulation test control, in particular to a vehicle ACC simulation test system based on traffic flow characteristics. The system comprises a traffic flow simulation module and a sensor simulation module, which are used for acquiring a self-vehicle simulation speed of a simulation vehicle and a front-vehicle simulation speed in the same lane; an ACC control module is divided into a variation analysis unit, a proportional regulation unit and a PID control unit; the variation analysis unit is used for acquiring high-frequency complexity and obtaining a cooperative variation degree at each collection time; the proportional regulation unit is used for adjusting preset proportional parameters of a PID controller according to a variation trend of the cooperative variation degree; and the PID control unit is used for controlling and adjusting the speed of the simulation vehicle in the vehicle ACC simulation test. The application improves the control precision of the vehicle in the simulation test process.

The application discloses a method for simulating the parameters of a generator neutral point grounding system of an extended unit connection, which comprises an actual generator system and a simulated generator system in parallel operation, wherein the simulated generator system comprises a low zero sequence impedance transformer, a three-phase capacitor bank and a simulated generator neutral point grounding device; the parameter simulation test comprises the following steps: S1, relay protection configuration; S2, neutral point asymmetric voltage test of the generator neutral point grounding system of the extended unit connection; S3, neutral point displacement voltage test of the generator neutral point grounding system of the extended unit connection; S4, maximum capacitive current test of single-phase grounding of the generator neutral point grounding system of the extended unit connection; and S5, maximum fault current test of single-phase grounding of the generator neutral point grounding system of the extended unit connection. The application can effectively verify the grounding system performance of different grounding modes of the generator of the extended unit connection and determine whether the generator neutral point grounding mode meets the technical requirements.

This invention discloses a shoe wear simulation test circuit and method. The shoe wear simulation test circuit includes at least an EBS controller, and the shoe wear simulation test method includes: acquiring the current test voltage, providing the current test voltage to the EBS controller, and receiving the current feedback signal output by the EBS controller; determining the current theoretical remaining wear of the shoe based on the current test voltage; determining the current tested remaining wear of the shoe based on the current feedback signal; and determining the current test result based on the current theoretical remaining wear and the current tested remaining wear. The technical solution of this invention can realize the simulation test of shoe wear detection function in a laboratory environment, with short test time and high accuracy, thus improving the reliability and safety of the braking system.

The application discloses a kind of mobile underwater layered hydraulic fill construction indoor simulation test method, comprising: step (1) by input module design key test parameters;Step (2) by input module setting water depth, speed and wave conditions;Step (3) by management module mixes uniform mud;Step (4) by management module starts first layer mobile hydraulic fill;Step (5) by management module completes first layer mobile hydraulic fill;Step (6) by management module repeats step (4)-(5);Step (7) by measuring system measures hydraulic fill test characteristic parameter;Step (8) clears up water tank test area silt. Various key construction parameters are adjusted, and multi-layer repeated mobile construction simulation technology is realized, which provides an effective means for in-depth study of high-precision layered hydraulic fill technology, improvement of construction efficiency and management quality.

A kind of compound inertial system attitude simulation test method, compound inertial system obtains launch system initial attitude angle by initial alignment mode;In dynamic loading process, the inertial data of compound inertial system is collected, and the angle signal of attitude simulation platform excitation is synchronously acquired;The attitude of compound inertial system is converted from launch system to local horizontal coordinate system by navigation solution method, while the angle signal of attitude simulation test platform is converted to the attitude angle of local horizontal coordinate system, and relevant operation is carried out, to obtain the dynamic performance parameter of compound inertial system.

This application relates to the technical field of voltage regulation function testing for power banks. It discloses a voltage regulation function simulation testing system and method. This application constructs a voltage regulation function simulation testing system including a simulation clock and a simulation cycle counter. At the software level, it directly simulates the passage of time and the accumulation of charge-discharge cycles during long-term battery use based on user-configured test parameters. The core algorithm layer uses simulation time and / or the number of simulated full-charge cycles to simulate the charging voltage of the power bank over time and the accumulation of charge-discharge cycles, thus completing the voltage regulation function simulation test of the power bank. This method of completing the voltage regulation function simulation test of a power bank through software simulation algorithms greatly reduces the physical testing time required without changing the physical testing environment or replacing the tested object. This significantly shortens the testing cycle while ensuring the test results accurately reflect real-world usage scenarios and have high reliability.

The present application relates to the field of connector testing, in particular to a connector-based locking structure testing method and system, comprising the following steps: building a multi-physical field coupling test environment to output a composite environmental stress; based on the actual application scenario of the to-be-tested locking structure, obtaining assembly deviation data, and obtaining an assembly deviation state through a preset multi-degree-of-freedom adjustable clamp; based on the physical data of the to-be-tested locking structure, constructing a three-dimensional model of the locking structure, giving real material mechanics parameters, inputting the composite environmental stress and the assembly deviation data into a finite element software for simulation testing, and outputting a simulation test data set; performing physical testing through the multi-physical field coupling test environment, and outputting a physical test data set; comparing and analyzing the simulation test data set and the physical test data set, and outputting a test report. The present application builds a multi-physical field coupling test environment, and combines a multi-degree-of-freedom adjustable clamp to make the test scenario closer to the real application working condition of the connector.

The utility model provides a kind of vacuum pump test system, it is related to vacuum pump technical field.Specifically, the vacuum pump test system includes test cover, detection module, gas supply module, period test module and reading module.Wherein, test cover is used to connect with the import of the vacuum pump to be measured, to simulate the process chamber connected with the vacuum pump to be measured.And gas supply module, period test module and reading module are connected with test cover.Wherein, gas supply module is used to supply gas to test cover and monitor gas supply flow, to simulate the load condition of the vacuum pump to be measured in actual working scene. Reading module is used to read the vacuum degree of test cover, to facilitate the evaluation of the key performance indicators such as pumping efficiency and ultimate vacuum degree of the vacuum pump to be measured.And period test module is used to supply gas to test cover and simulate test environment, to carry out period test to the vacuum pump to be measured, to predict the service life of the vacuum pump to be measured, to formulate maintenance plan accordingly.

The application provides a comprehensive environment simulation test system for rotating parts, comprising a vacuum cabin, a high-low temperature test subsystem arranged in the vacuum cabin and provided with a first temperature control assembly for cooling the vacuum cabin and a second temperature control assembly for heating the vacuum cabin, a high vacuum obtaining subsystem connected with the vacuum cabin for adjusting the vacuum degree of the vacuum cabin, a micro-gravity simulation subsystem arranged in the vacuum cabin and provided with a magnetic suspension bearing connected with the rotating part to be tested, a dynamic torque test subsystem provided with a driving motor, a magnetic powder brake and at least one shaft coupling, the driving motor and the magnetic powder brake being connected with the rotating part to be tested in the vacuum cabin through the shaft coupling and at least one magnetic fluid dynamic sealing device, and a dynamic parameter measurement subsystem arranged in the vacuum cabin and provided with at least one measurement unit for obtaining the dynamic parameters of the rotating part to be tested. Therefore, the application can improve the effectiveness of the space environment simulation test of the rotating part.

The application provides an airplane main landing gear simulation test device, a test load vehicle and a control method, relates to the technical field of flight test devices, and solves the technical problem that the main landing gear of the test load vehicle cannot be lifted with the change of the load, resulting in errors in the test results and low precision. The airplane main landing gear simulation test device and the test load vehicle comprise a main landing gear body, a left wheel assembly and a right wheel assembly, a wheel frame upper joint, a wheel frame lower joint and a hydraulic drive mechanism are arranged between the left wheel assembly and the main landing gear body and between the right wheel assembly and the main landing gear body, the wheel frame upper joint is rotationally connected to both ends of the main landing gear body, one end of the wheel frame lower joint is rotationally connected to the wheel frame upper joint, the other end of the wheel frame lower joint is connected to the left wheel assembly or the right wheel assembly, and the hydraulic drive mechanism is connected between the wheel frame upper joint and the wheel frame lower joint. The application is used for providing an airplane main landing gear simulation test device and a test load vehicle for improving the accuracy of test results.

The invention belongs to the technical field of high-speed wind tunnel tests, and discloses a high-speed jet flow wind tunnel large-scale model velocity pressure simulation test method, which comprises the following steps: installing a model at an initial state position; calculating the total pressure P0 of the wind tunnel; the injection pressure P0p is calculated; starting a high-speed free jet wind tunnel; transforming the model to a second state; performing flow field parameter adjustment according to the model state, and performing static pressure matching fine adjustment; continuing to transform the model state until all data are collected; and closing the high-speed free jet wind tunnel. According to the high-speed jet flow wind tunnel large-scale model velocity pressure simulation test method, under the condition that the Mach number M is determined, the wind tunnel total pressure P0 and the injection pressure P0P are selected, accurate simulation of the Mach number M and the velocity pressure is achieved, and the method has engineering practical value.

This invention relates to the field of mine geological disaster control and geotechnical engineering testing technology, and particularly to a device and method for simulating and testing the seepage and particle migration of glacial till under rainfall conditions. The device includes a rainfall simulation mechanism, a glacial till seepage simulation mechanism, a seepage monitoring system, and a migration and seepage monitoring system. The glacial till seepage simulation mechanism includes a cylinder, and the monitoring end of the seepage monitoring system is located inside the cylinder. By setting up a rainfall simulation mechanism and a cylinder, and placing the monitoring end of the seepage monitoring system inside the cylinder, this invention allows the seepage monitoring system to monitor the seepage and moisture content changes of glacial till samples at different depths in real time. The migration and seepage monitoring system collects infiltrated water and migrating fine particles, enabling researchers to determine the rainwater infiltration situation of this type of glacial till sample and the migration pattern of fine particles under infiltration conditions based on the amount of water and fine particles collected by the migration and seepage monitoring system.

The application discloses a variable stiffness restraint test fixture and a test method for soft package lithium ion batteries, aiming to solve the technical problem that the existing battery mechanical test equipment is difficult to quantitatively and independently adjust the equivalent stiffness of the system. The fixture comprises a loading mechanism, a restraint module, a replaceable linear spring group and a sensor module. The operator accurately applies the initial pre-tightening force by adjusting the loading mechanism, and in the battery charging and discharging cycle, the linear spring group provides a clear and quantifiable equivalent restraint stiffness. The test method based on the fixture comprises the following steps in sequence: battery installation, stiffness configuration, pre-tightening force application, and cycle test and data acquisition. The application realizes double independent quantitative control of the pre-tightening force and the restraint stiffness, can provide clear mechanical boundary conditions for the battery mechanical test, and helps to objectively evaluate the influence of mechanical restraint on the battery performance.

The application provides an air conditioning water system control simulation system and method, the air conditioning water system control simulation system comprises a user interaction server, a virtual control system and a physical model of an air conditioning water system deployed on the same edge device, the physical model comprises a first substitution program for calling a target function and a second substitution program called by the target function; when the air conditioning water system control simulation is performed, the user interaction server acquires a control program corresponding to the target function written by a user and sends the control program to the virtual control system; and the virtual control system runs the control program based on the physical model to realize simulation test of the target function. Thus, the simulation test of the air conditioning water system is realized without physical simulation, so that the application can provide a reference for development of the water system control program, improve iteration efficiency of program development, verify reliability and stability of the control program in advance, and reduce the Bug rate in program development.

This invention discloses a simulation verification method and apparatus for fault-tolerant control capabilities of an autonomous driving thermal management system. The method includes coupling a physical model and a control model of the vehicle's thermal management system, establishing a vehicle thermal management simulation model, and establishing an autonomous driving system simulation model. The autonomous driving system simulation model includes a vehicle model and an environment model. The method acquires the setting parameters of the environment model and the fault data of the physical model for the target simulation test scenario. Based on the system-level co-simulation model, the autonomous driving function to be tested is tested on the vehicle. The system-level co-simulation model couples the autonomous driving system simulation model and the vehicle thermal management simulation model to obtain fault diagnosis results. Based on the fault diagnosis results, a fault-tolerant control strategy is formulated. This invention can combine fault scenarios and driving scenarios to form a comprehensive simulation scenario, thereby comprehensively verifying the fault-tolerant control capabilities of the autonomous driving system.

This invention relates to a simulation test method for grouting of prestressed concrete bridge ducts, characterized by the following specific test steps: S1: Test design; S2: Equipment and material preparation; S3: Test commencement. This method addresses the problem that common duct grouting construction techniques, processes, and requirements cannot meet the needs of new grouting materials and equipment, such as "grouting from the lowest point." Some construction techniques have theoretical flaws, such as "flushing the duct before grouting and blowing away accumulated water with high-pressure air," and some lack reliable theoretical and practical basis. Therefore, it is necessary to study the influencing factors of duct grouting construction techniques based on current grouting materials, summarize the main factors affecting duct grouting quality, and propose an operable grouting process method.

Provided is a method for identifying and monitoring a water-conducting path of a water inrush source based on a similarity simulation test. The method includes: collecting mining area data, determining lithology and a laying thickness of each rock stratum in a mining area, and performing similar material proportioning for the determined lithology of each rock stratum; and using an exothermic material as a layered material for the similarity simulation test. According to the method for identifying and monitoring a water-conducting path of a water inrush source based on a similarity simulation test, the exothermic material is used in the similarity simulation test, to enhance a temperature response capability of various rock strata in a test environment. Subtle temperature changes in the rock strata can be reflected more accurately in a water inrush process, and therefore, monitoring precision is improved.

The application discloses a kind of for ship overturning buckle simulation test and underwater deep tank evacuation evaluation system, comprising: physical simulation experiment platform, for carrying out ship overturning buckle simulation test, and collecting real-time observation data in test process;Digital twin system, for receiving and according to real-time observation data in test process, construct and physical scene synchronous evolution three-dimensional dynamic model, realize the dynamic visualization of ship overturning buckle process and escape path deduction;Evacuation path planning algorithm evaluation system is embedded in digital twin system, for relying on three-dimensional dynamic model provided by digital twin system, realize the access of different evacuation path planning algorithm, multi-scene test and multi-criteria evaluation.The application provides quantifiable technical support for ship capsizing accident mechanism research, evacuation path optimization design and emergency rescue scheme formulation.

The utility model discloses a kind of collapse pit dewatering aggregation simulation test devices, it is related to testing, measurement technical field.It includes collapse pit simulation system, dewatering simulation system and information acquisition system.Collapse pit simulation system adopts box without top cover, and the collapse pit of different working conditions, filling material can be constructed, so different filling, collapse pit gradient can be simulated test;Dewatering simulation system can spray water body to collapse pit simulation system, and dewatering simulation system can control dewatering height, dewatering area, dewatering intensity and dewatering time by lifting frame, dewatering nozzle, adjustable transformer, timing socket, so that the collapse pit of multiple working conditions can be carried out dewatering aggregation similar simulation test;Information acquisition system obtains the moisture content, pressure and temperature etc. Information of inside filling of collapse pit, it is favorable to ascertain the aggregation behavior of collapse pit dewatering under different working conditions, provide basis for collapse pit ponding management, thereby reduce underground debris flow risk, guarantee mine safety and efficient production.

1. Name of the product in this design: Electronic device with graphical user interface for simulated exam analysis. 2. Intended use of this design: for use in an electronic device. 3. The key design features of this product are: the content of the graphical user interface in the electronic device. 4. The image or photograph that best illustrates the design's key features: the front view. 5. The design for which protection is sought includes color. 6. Purpose of the graphical user interface: for analysis of driver's license simulation tests. 7. Human-computer interaction method of graphical user interface: The main view displays the software homepage interface. Clicking the "Analysis-Comprehensive" option will jump to the interface change state diagram 1; clicking "View Details" for any exam subject within the red box in the interface change state diagram 1 will jump to the interface change state diagram 2 to display the exam details of the corresponding exam subject.

This application provides a Saber-based inverter simulation method, which includes: generating an initial simulation test circuit; performing time-domain simulation based on the initial simulation test circuit to obtain the total loss, switching loss, and conduction loss of the power device model; transforming the initial simulation test circuit to obtain a replacement simulation test circuit, and performing sensitivity testing on the obtained replacement simulation test circuit based on the total loss, switching loss, and conduction loss of the power device model to obtain the sensitivity of each initial curve; and adjusting the power device design based on the obtained total loss, switching loss, conduction loss of the power device model, and the sensitivity of each original curve. This method can guide the design of power devices and other parameters in the circuit, effectively improving R&D efficiency and quickly achieving the goals of improving inverter efficiency, reducing losses, and meeting system efficiency requirements.

The present application relates to a kind of mine earthquake internal seismic source power similarity simulation test system and method based on metal wire electric explosion, pre-embedded metal wire electric explosion is used to form transient volume expansion seismic source in similar material model inside, it is realized by the conversion of the accurate release energy source from the external monotone extensive mechanical disturbance to model inside;Through the division of labour design of charging branch, main discharge branch, discharge branch and detection branch, make circuit organization relationship clear, protection chain is complete, it is convenient to stable implementation high voltage pulse discharge test;Through the current limiting inductance to the discharge current front and pulse width are adjusted, so that mine earthquake simulation is no longer only pay attention to total energy similarity, also consider time process similarity;The corresponding relationship between the energy of field mine earthquake event and the input electric energy of similar material model is established, the scientificity of test parameter setting is improved;Through cabinet type layered assembly, host computer software control and standardization experimental process organization, the repeatability, traceability and safety of device operation are improved.

The present application relates to the technical field of engine simulation test, in particular to a thrust characteristic coupling model construction and numerical simulation method about attitude-adjusting engine, comprising: ontology model fusion algorithm platform, structural mechanics analysis calculation platform and multi-dimensional physical field coupling calculation platform. The present application extracts and fuses the models in the digital prototype model library and verification environment model library of the attitude-adjusting engine, couples the corresponding models with the conditional load excitation, checks, and realizes the numerical simulation of the thrust characteristic coupling model under the multi-scene algorithm path matching, adjustment and multi-disciplinary policy algorithm module cooperation. Mainly divided into ontology model fusion algorithm platform, structural mechanics analysis calculation platform and multi-dimensional physical field coupling calculation platform.

This invention discloses a simulation component for blade coating testing, a processing method for the simulation component, and a fixture, belonging to the technical field of engine turbine blade structure simulation test components. It includes a hollow shell extending vertically, with through holes on the hollow shell having the same distribution pattern as the film cooling pores of an engine blade. The outer surface of the hollow shell is coated with the same coating as the engine blade surface. The wall thickness of the hollow shell is not less than the minimum wall thickness of the engine blade. A folded edge for snapping is provided at the opening of the hollow shell. The invention's hollow shell has through holes with the same distribution pattern as the film cooling pores of an engine blade, and the outer surface of the hollow shell is coated with the same coating as the engine blade surface. Furthermore, the wall thickness of the hollow shell is limited to not less than the minimum thickness of the engine blade, enabling the simulation component to reflect the characteristics of real service blades, such as the distribution of cooling pores, material thickness variations, and stress concentration areas, thereby improving the accuracy of blade coating test data.

The application discloses a kind of based on space sampling consistency determination pipe robot multi-source perception full true simulation test system, belong to pipe detection simulation test technical field, it includes mechanical execution system, space state perception gate and physical trigger system, multi-sensor sampling unit, true value reconstruction system.Mechanical execution system provides the motion reference along the axial direction of pipeline, and allow to introduce controlled nonlinear disturbance, space state perception gate and physical trigger system are used for the arbitration of sampling opportunity when FPGA motion control card, step modulation and physical trigger;Multi-sensor sampling unit is used to execute sampling instruction and generate original data with position label;True value reconstruction system is used to construct the standardized pipeline true value containing position, texture and geometric information;The application realizes high-fidelity three-dimensional digital reconstruction to the inner wall of pipeline by introducing IMU posture latch, micro time delay elastic capture, binocular vision forward variable frequency modulation and reverse geometry correction algorithm.

The present application relates to the field of rocket engine nozzle testing, and particularly relates to a flexible rocket engine nozzle cold swing test simulation test system and a test method thereof, the system comprising a pressure vessel, a servo mechanism, an inclinometer, a linear displacement sensor and a real-time simulator, the pressure vessel provides a cold pressurized environment, the servo mechanism drives the nozzle to swing, the inclinometer calibrates the swing angle, and the linear displacement sensor detects the swing and outputs an analog signal. During testing, the swing angle-voltage relationship is calibrated through the inclinometer and the linear displacement sensor; then the real-time simulator sends a sine instruction to drive the nozzle to swing, and synchronously collects the displacement signal, analyzes the dynamic characteristics of the servo mechanism and the coordination with the nozzle. Through the swing angle-voltage equation obtained by calibrating the swing, combined with continuous attitude simulation controlled by the simulator, the nozzle swing angle data is calculated, and the dynamic response of the servo mechanism under the pressurized condition is evaluated, the present application can truly reflect the continuous swing working condition of the nozzle, and improve the reliability and authenticity of the test data.

The application discloses a dew point temperature control system of a light composite environment simulation test box, and belongs to the technical field of extreme climate light composite environment simulation test. In view of the problem that the existing light environment simulation test box cannot be compatible with low-temperature and high-temperature and high-humidity extreme climate environment simulation test due to condensation of light glass, the dew point temperature control system of the light composite environment simulation test box is automatically controlled by using light-transmitting double-layer glass devices and software, the temperature of the interlayer glass is automatically adjusted by the control system according to a test program, the temperature of the interlayer glass is always higher than the dew point temperature corresponding to the temperature and humidity in the test chamber, the condensation phenomenon of the light glass is fundamentally avoided, the composite light environment simulation test of the test box under the extreme climate of low temperature-50 DEG C, high temperature 125 DEG C and humidity 20%-95% is realized, the accuracy of test results is ensured, and the test standard requirements are met.

This application discloses a charging pile aging test device, relating to the field of charging pile testing technology. The device includes a main body with a test chamber and a drying chamber inside. Protective doors are installed on the main body at positions corresponding to the test chamber and drying chamber. A controller is fixed to the side of the main body. A mesh belt conveyor is installed inside the main body. A water collection tank is provided at the bottom of the test chamber. A simulation structure for simulating charging pile testing is provided on one side of the main body, and a drying structure for drying the charging pile is provided on the other side. The drying structure can dry the water adhering to the surface of the charging pile, effectively reducing the problem of water dripping from the charging pile surface when it is removed after testing, thus reducing the impact on the surrounding environment. It also effectively reduces the problem of slipping when handling the charging pile due to water on its surface.