CN210776233U - Semi-physical simulation test bed for microcomputer type antiskid device of train - Google Patents
Semi-physical simulation test bed for microcomputer type antiskid device of train Download PDFInfo
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- CN210776233U CN210776233U CN201921423270.8U CN201921423270U CN210776233U CN 210776233 U CN210776233 U CN 210776233U CN 201921423270 U CN201921423270 U CN 201921423270U CN 210776233 U CN210776233 U CN 210776233U
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Abstract
The utility model relates to a train microcomputer type antiskid ware semi-physical simulation test bench, by the operating console, the motion unit, the gas circuit rack sends the required control of antiskid ware work and data information, including the braking instruction, speed, empty spring pressure etc, antiskid ware makes afterwards and slides and judges and control antiskid valve action adjustment checking cylinder pressure, the pressure signal that baroceptor recorded returns to emulation computer software model by data acquisition system and carries out the operation of next moment axle speed, so realize the semi-physical simulation of train braking antiskid process, wherein the train, the track is virtual model, all the other are the hardware material object, the test result is true, reliable, host computer shows braking distance in real time in the test process, the deceleration, speed, checking cylinder pressure, the antiskid process key information such as the amount of wind that consumes. Compared with the prior art, the utility model has the advantages of the hardwarization degree is high, test data is objective accurate, the test coverage is wide, good reproducibility.
Description
Technical Field
The utility model belongs to the technical field of rail vehicle anti-skidding performance test technique and specifically relates to a semi-physical simulation test bench of train computer formula antiskid unit.
Background
The antiskid device is one of the key subcomponents of the train braking system, plays an important role in the aspects of preventing the wheel set from sliding and locking due to poor rail surface adhesion conditions, reducing the braking distance and guaranteeing the train parking safety in the braking process, and the development of the antiskid device performance test is an important basis for guaranteeing the use safety of the antiskid device.
The performance test of the existing antiskid device mostly depends on the line test of the whole vehicle, the cost is high, the consumed time is long, the management is difficult, the repeatability is poor, and even safety problems can be caused under severe working conditions.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art and provide a semi-physical simulation test bench for a microcomputer type antiskid device of a train, the control and data information required by the work of the antiskid device, including braking instruction, speed, air spring pressure and the like, are sent by an operation control console, a motion unit and an air circuit bench, the antiskid device makes sliding judgment and controls the action of an antiskid valve to adjust the pressure of a brake cylinder, a pressure signal measured by an air pressure sensor is returned to a simulation computer software model by a data acquisition system to calculate the axle speed at the next moment, so the semi-physical simulation of the antiskid process of train braking is realized, the train and the track are virtual models, the rest are hardware objects, the test result is real and reliable, and the upper computer displays key information of the antiskid process such as braking distance, deceleration, speed, brake cylinder pressure, air consumption and the like in real time in the test process.
The purpose of the utility model can be realized through the following technical scheme:
a semi-physical simulation test bed for microcomputer antiskid unit of train is composed of operating console, moving unit, gas channel bed and measuring and controlling system, wherein the measurement and control system consists of a simulation computer, a data acquisition system and a power supply for supplying power to all electric equipment of the test bed, the simulation computer is connected with the operation console, the motion unit, the gas circuit rack and the measured object through the data acquisition system, the simulation computer calculates a train dynamics model, a track model and a TCU model which are established according to a real controlled object in real time, and forms a virtual running environment of the antiskid device together with the operation control console, the motion unit, the gas circuit rack and the measurement and control system, the semi-physical simulation of the train braking antiskid control process is realized by carrying out control and process information interaction with a tested microcomputer type antiskid device.
Further, the operation control platform including set up driver's controller, demonstration button and the host computer on the steel construction rack, the driver's controller for send braking control command give the measured object, show the button for show operating condition, the host computer for show the parameter information of simulation process and to the operating mode information transmission who sets up the simulation computer.
Furthermore, the motion unit is composed of a brushless motor, a motor driving device and a transmission device connected with the brushless motor.
The air path rack comprises an air source, an air cylinder, a brake cylinder, an anti-skid valve, an air path connecting metal pipe, a rubber pipe, a pressure control valve and a tested object mounting seat which are arranged on another steel structure rack and connected according to the composition mode of the real air brake system of the train, wherein the anti-skid valve adopts an adjustable volume type anti-skid valve, a connecting pipeline between the anti-skid valve and the brake cylinder is a detachable connecting pipeline, and the pressure control valve is connected with the data acquisition system.
Further, the measurement and control system further comprises a steel structure cabinet for integrating the simulation computer, the data acquisition system and the power supply.
Further, the power supply consists of a direct current stabilized power supply and a transformer.
Further, the data acquisition system includes interconnect's data acquisition integrated circuit board, set up in atmospheric pressure, flow sensor on the gas circuit rack and with the speedtransmitter that the output shaft of the brushless motor of motion unit is connected, the data acquisition system pass through the data acquisition integrated circuit board with the emulation computer is connected.
The utility model also provides a test method of computer formula antiskid unit performance, this method is based on train computer formula antiskid unit semi-physical simulation test bench, the method includes following step:
step 1: the measured object is placed on the mounting seat of the gas circuit rack, and the electric and gas connection is realized among the measurement and control system, the operation console, the gas circuit rack and the motion unit through cables and connecting pipelines;
step 2: setting vehicle load, total wind pressure, train braking initial speed and track adhesion state on an upper computer of the operation console aiming at a certain working condition, sending the vehicle load, the total wind pressure, the train braking initial speed and the track adhesion state to the simulation computer through Ethernet, adjusting internal parameters of a software model by the simulation computer, controlling a data acquisition board card of the data acquisition system to generate a control valve control signal of the gas circuit rack and a motor driving device control signal of the movement unit, and outputting corresponding air springs, total wind, train pipe pressure air and axle speed information to a measured object;
and step 3: operating a driver controller of the operating console, applying a braking instruction, controlling the action of an internal pneumatic valve by a tested object according to the braking instruction, the speed and the load information of the train, starting the pressure change of a brake cylinder, returning pressure information acquired by an air pressure sensor arranged on the air circuit rack to the simulation computer by the data acquisition system for real-time operation of a software model, and detecting sliding and performing anti-skid control by the tested object;
and 4, step 4: the simulation computer transmits all state information in the braking anti-skid process to the upper computer through the Ethernet, the man-machine interaction software running on the upper computer displays the key information in a curve or digital mode in real time, relevant data can be stored in a table form, and after braking begins, when the train speed is reduced to be below 3km/h, a braking sliding test is finished.
The utility model also provides a test method of computer formula antiskid unit system hardware parameter optimization, this method is based on train computer formula antiskid unit semi-physical simulation test bench, the method includes following step:
step 1: placing the microcomputer type antiskid unit on the mounting seat of the gas circuit rack, and realizing the electrical and pneumatic connection among the measurement and control system, the operation console, the gas circuit rack and the motion unit through cables and connecting pipelines;
step 2: setting a certain working condition, fixing software model parameters of the simulation computer, and outputting corresponding air springs, total wind, train pipe pressure air and axle speed information to a microcomputer type antiskid device by the semi-physical simulation test bed;
and step 3: adjusting the volume of a brake cylinder of the gas circuit rack, the air exhaust caliber of an antiskid valve and the pipe diameter of a connecting pipeline between the antiskid valve and the brake cylinder, applying a brake stage corresponding to a working condition to a tested object by the operation console, starting semi-physical simulation of a brake antiskid control process, and allowing only one of three parameters of the volume of the brake cylinder of the gas circuit rack, the air exhaust caliber of the antiskid valve and the pipe diameter of the connecting pipeline between the antiskid valve and the brake cylinder to be modified in one test;
and 4, step 4: when the train speed is reduced to be below 3km/h, ending the single test, and displaying the braking distance, the deceleration and the speed information of the test by an upper computer of the operation console;
and 5: and continuously adjusting parameters according to requirements to develop the next test, summarizing all test results after the test is finished, and analyzing to obtain the optimal hardware parameters of the antiskid device.
The utility model also provides a test method of computer formula antiskid unit system spare part performance, this method is based on train computer formula antiskid unit semi-physical simulation test bench, the method includes following step:
step 1: placing the microcomputer type antiskid unit on the mounting seat of the gas circuit rack, and realizing the electrical and pneumatic connection among the measurement and control system, the operation console, the gas circuit rack and the motion unit through cables and connecting pipelines;
step 2: correspondingly arranging a speed sensor or an antiskid valve to be tested in the moving unit and the gas circuit rack respectively, and setting a certain working condition to enable an antiskid device to detect sliding in the test process;
and step 3: applying a braking level, starting braking, monitoring a curve of the measuring speed and the actual speed of the speed sensor to be measured in real time by an upper computer of the operation console, and analyzing the performance and the measuring precision of the speed sensor to be measured after the test is finished;
and 4, step 4: when the antiskid device is used for antiskid control, the performance of the antiskid device is analyzed and judged according to the pressure change condition of a brake cylinder of the pneumatic support, the response speed of the antiskid valve and the response sensitivity, and when the speed of the train is reduced to be below 3km/h, a single test is finished.
Compared with the prior art, the utility model has the advantages of it is following:
(1) the performance test of the microcomputer antiskid device of the train can be completed on the rack, the problems of high cost, low efficiency and safety of a real train line test are solved, the hardware degree of the test bench is high, and test data are more objective and accurate.
(2) The method can be used for performance inspection of each part of the antiskid system and parameter optimization of related hardware.
(3) A software model (comprising a train model, a track model and a TCU model) is established according to a real controlled object, the braking antiskid process of the train is simulated on a rack, the wheel-rail adhesion working condition and vehicle parameters can be customized, and information such as braking distance, deceleration, speed, air consumption and the like reflecting antiskid control performance is output.
Drawings
To further clarify the above and other advantages and features of various embodiments of the present invention, a more particular description of various embodiments of the invention will be rendered by reference to the appended drawings. It is appreciated that these drawings depict only typical embodiments of the invention and are therefore not to be considered limiting of its scope. Also, the relative positions and sizes of the respective portions shown in the drawings are exemplary, and should not be understood as uniquely determining positional or dimensional relationships between the respective portions.
FIG. 1 is a block diagram of a semi-physical simulation test bed for a microcomputer type antiskid device of a train according to the present invention;
FIG. 2 is a schematic flow chart of a performance testing method for a microcomputer type antiskid device provided by the present invention;
FIG. 3 is a schematic flow chart of a hardware parameter optimization test method for a microcomputer type antiskid system provided by the present invention;
fig. 4 is a flow chart of the performance test method for the components of the microcomputer type antiskid device system provided by the utility model.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall fall within the protection scope of the present invention.
Examples
The utility model provides a semi-physical simulation test bench of train microcomputer antiskid ware constitutes the block diagram as shown in figure 1, the utility model provides a semi-physical simulation test bench of train microcomputer antiskid ware, this test bench include operation control platform, motion unit, gas circuit rack, observing and controlling system, and wherein observing and controlling system comprises simulation computer, data acquisition system, power. The method is characterized in that a train dynamics model, a track model, a TCU model and the like which are established according to a real controlled object are calculated in real time in an emulation computer of the measurement and control system, the train dynamics model, the track model, the TCU model and the like are combined with other components of a test bed to form a virtual operation environment of the antiskid device, and the semi-physical emulation of the train braking antiskid control process is realized by carrying out control and process information interaction with a tested microcomputer type antiskid device (ECU with a pneumatic valve).
The operating console comprises a steel structure rack, a driver controller, a display button and an upper computer, wherein the driver controller sends a braking control instruction to a tested object, the display button is used for displaying a braking state, and the upper computer receives all data transmitted by the simulation computer and displays key parameter information on one hand and sends set working condition information to the simulation computer on the other hand;
the motion unit consists of a brushless motor with controllable rotating speed, motor driving equipment and a transmission device connected with the brushless motor, wherein the motor driving equipment is connected with a data acquisition system, is controlled by a simulation computer and outputs the rotating speed consistent with the axial speed of the model;
the air path rack comprises a steel structure rack, an air source, an air cylinder, a brake cylinder, an anti-skid valve, a metal pipe, a rubber pipe, a pressure control valve and a mounting seat of a tested object, wherein the metal pipe, the rubber pipe, the pressure control valve and the mounting seat of the tested object are connected through an air path; the brake cylinder is adjustable in volume, a pipeline from the anti-skid valve to the brake cylinder can be conveniently detached to replace the aperture, and the exhaust aperture of the anti-skid valve can be adjusted; the pressure control valve is connected with the data acquisition system, is controlled by the simulation computer and outputs air spring pressure air with the same load as the set load of the train software model to the measured object.
The measurement and control system consists of a steel structure cabinet, an emulation computer, a data acquisition system and a power supply, wherein the three are integrated in the steel structure cabinet together, and the emulation computer is connected with an operation control console, a motion unit, a gas circuit rack and a measured object through the data acquisition system. The power supply supplies power to all the electric equipment of the test bed.
The simulation computer sends control instructions of the motor driving equipment of the movement unit and the pressure control valve of the air circuit rack through the data acquisition system to generate axle speed and load information of the simulated train; acquiring a control instruction of an operation console and a measurement result monitoring system state of each sensor in a test bench; and calculating the motion state of the model at the next moment in real time according to the returned brake cylinder pressure information, adjusting a control signal of the motor driving equipment of the motion unit to output a corresponding shaft speed, generating information such as braking distance, deceleration, speed and the like, and sending all parameters to an upper computer in the operation console through the Ethernet for displaying.
The data acquisition system comprises a data acquisition board card, an air pressure sensor and a flow sensor which are arranged on an air path rack, and a speed sensor of a motion unit, wherein the data acquisition board card comprises an A/D board card, a D/A board card and an I/O board card and is used for acquiring and generating all switching value, analog quantity and pulse quantity signals in the braking anti-skid semi-physical simulation process; the air pressure sensor, the flow sensor and the speed sensor respectively measure a pressure signal, a flow signal and a shaft speed signal, and the pressure signal, the flow signal and the shaft speed signal are transmitted to the simulation computer through the data acquisition board card, wherein the speed sensor signal is divided into one path to be directly transmitted to a measured object.
The power supply consists of a direct current stabilized power supply and a transformer, and outputs corresponding voltage according to the requirements of electric equipment.
Fig. 2 shows a method for testing performance of a microcomputer type antiskid device, which is based on the semi-physical simulation rack of the microcomputer type antiskid device in the above scheme, and comprises the following steps:
step S1, placing the tested object on the mounting seat of the air channel rack, and realizing the electric and pneumatic connection between the cable, the connecting pipeline and the test control system, the operation console, the air channel rack and the moving unit;
step S2, setting parameters such as vehicle load, total wind pressure, train braking initial speed, track adhesion state and the like on an upper computer of an operation console aiming at a certain working condition, sending the parameters to a simulation computer through Ethernet for the simulation computer to adjust internal parameters of a software model, controlling a data acquisition card to generate a gas circuit rack control valve control signal and a motor driving device control signal of a power unit, and outputting corresponding air spring, total wind, train pipe and other pressure air and shaft speed information to a tested object;
step S3, operating a driver controller, applying a braking instruction, controlling the action of an internal pneumatic valve by the tested object according to the braking instruction, the speed of the train and the load information, starting the pressure change of a brake cylinder, returning the pressure information collected by an air pressure sensor to an emulation computer by a data collection system for real-time operation of a software model, and detecting the sliding of the tested object and performing anti-sliding control due to the fact that the axle speed is reduced quickly because the adhesion coefficient set by a track model is low;
and step S4, the simulation computer transmits all state information in the brake anti-skid process to the upper computer through Ethernet, and the man-machine interaction software running on the upper computer displays the key information such as the shaft speed, the deceleration, the brake distance, the brake cylinder pressure and the like of each shaft in a curve or digital mode in real time and can store related data in a form of a table. And after the braking is started, when the speed of the train is reduced to be below 3km/h, finishing the one-time braking sliding test.
Fig. 3 shows a testing method for hardware parameter optimization of a microcomputer type antiskid device system in the present invention, which is based on the semi-physical simulation platform of the microcomputer type antiskid device in the foregoing scheme, and the method includes the following steps:
step S1, placing the microcomputer type antiskid device on a mounting seat of a gas circuit rack, and realizing the electrical and gas connection among a cable, a connecting pipeline, a measurement and control system, an operation console, the gas circuit rack and a motion unit;
step S2, a certain working condition is given, the simulation computer software model parameters are fixed, and the semi-physical simulation test bed outputs corresponding air springs, total wind, train pipes and other pressure air and axle speed information antiskid devices;
s3, adjusting the volume of a brake cylinder, the air exhaust aperture of an antiskid valve and the pipe diameter of a connecting pipeline from the antiskid valve to the brake cylinder, applying a brake level corresponding to a working condition to an antiskid device by an operation console, starting semi-physical simulation of a brake antiskid control process, and allowing only one of the three parameters to be modified in a primary test;
step S4, when the speed is lower than 3km/h, the single test is finished, and the upper computer displays the braking distance, the deceleration and the speed information of the test;
and step S5, continuously adjusting parameters according to requirements to develop the next test, summarizing all test results after the test is completed, and analyzing to obtain the optimal hardware parameters of the antiskid device.
Fig. 4 shows a method for testing the performance of the components of the microcomputer type antiskid device system, which is based on the semi-physical simulation platform of the microcomputer type antiskid device of the train in the aforementioned scheme, and the method comprises the following steps:
step S1, placing the microcomputer type antiskid device on a mounting seat of a gas circuit rack, and realizing the electrical and gas connection among a cable, a connecting pipeline, a measurement and control system, an operation console, the gas circuit rack and a motion unit;
step S2, respectively arranging a speed sensor to be tested and an antiskid valve on a motion unit and an air channel rack, and setting a certain working condition to enable an antiskid device to detect sliding in the test process;
step S3, applying a braking level, starting braking, monitoring a curve of the measuring speed and the actual speed of the speed sensor in real time by the upper computer, and analyzing the performance and the measuring precision of the speed sensor after the test is finished;
and step S4, when the antiskid device is subjected to antiskid control, the performance of the antiskid device is analyzed and judged according to the pressure change condition of the brake cylinder, the response speed of the antiskid valve, the response sensitivity and the like.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope of the present invention, and these modifications or replacements should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. The utility model provides a train microcomputer type antiskid ware semi-physical simulation test bench, its characterized in that, this rack includes operation control cabinet, motion unit, gas circuit rack and observes and controls the system, wherein, observe and control the system by simulation computer, data acquisition system and be used for forming for the power of all consumer electricity of test bench, the simulation computer passes through data acquisition system with operation control cabinet the motion unit gas circuit rack is connected with the measured object.
2. The semi-physical simulation test bed for the microcomputer type antiskid devices of the train as claimed in claim 1, wherein the operation console comprises a driver controller arranged on the steel structure bed for sending braking control commands to the object to be tested, a display button for displaying working conditions, and an upper computer for displaying parameter information of the simulation process and sending set working condition information to the simulation computer.
3. The semi-physical simulation test bed for the microcomputer type antiskid devices of the train as claimed in claim 1, wherein the moving unit is composed of a brushless motor, a motor driving device and a transmission device connected with the brushless motor.
4. The semi-physical simulation test bed for the microcomputer type antiskid device of the train as claimed in claim 1, wherein the gas circuit bed comprises a wind source, a wind cylinder, a brake cylinder, an antiskid valve, a gas circuit connection metal pipe, a rubber pipe, a pressure control valve and a tested object mounting seat which are arranged on another steel structure bed and connected according to the composition mode of a real gas brake system of the train, wherein the antiskid valve is an adjustable volume type antiskid valve, a connection pipeline between the antiskid valve and the brake cylinder is a detachable connection pipeline, and the pressure control valve is connected with the data acquisition system.
5. The semi-physical simulation test bed for the microcomputer type antiskid devices of the train as claimed in claim 1, wherein the measurement and control system further comprises a steel cabinet for integrating the simulation computer, the data acquisition system and the power supply.
6. The semi-physical simulation test bed for the microcomputer type antiskid devices of the train as claimed in claim 1, wherein the power supply is composed of a DC stabilized power supply and a transformer.
7. The semi-physical simulation test bed for the microcomputer type antiskid devices of the train as claimed in claim 1, wherein the data acquisition system comprises a data acquisition board card, air pressure and flow sensors and a speed sensor, wherein the air pressure and flow sensors are arranged on the air channel bed, the speed sensor is connected with the output shaft of the brushless motor of the motion unit, and the data acquisition system is connected with the simulation computer through the data acquisition board card.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110471314A (en) * | 2019-08-29 | 2019-11-19 | 同济大学 | A kind of train microcomputer type anti-skid device hardware in the loop test-rig frame and test method |
| CN112918496A (en) * | 2021-02-26 | 2021-06-08 | 北京建筑大学 | Train air consumption calculation method and system |
| CN113340627A (en) * | 2021-06-29 | 2021-09-03 | 中车株洲电力机车有限公司 | Air anti-skid test method and device and rail transit vehicle |
-
2019
- 2019-08-29 CN CN201921423270.8U patent/CN210776233U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110471314A (en) * | 2019-08-29 | 2019-11-19 | 同济大学 | A kind of train microcomputer type anti-skid device hardware in the loop test-rig frame and test method |
| CN112918496A (en) * | 2021-02-26 | 2021-06-08 | 北京建筑大学 | Train air consumption calculation method and system |
| CN113340627A (en) * | 2021-06-29 | 2021-09-03 | 中车株洲电力机车有限公司 | Air anti-skid test method and device and rail transit vehicle |
| CN113340627B (en) * | 2021-06-29 | 2022-05-10 | 中车株洲电力机车有限公司 | Air antiskid test method and device and rail transit vehicle |
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