A performance test system for an anti-G suit system

Abstract

The present invention discloses a performance test system for an anti-G suit system, comprising: a host computer for issuing instructions; a gas source pressure control subsystem communicatively connected to the host computer for inputting gas into the anti-G suit through the anti-G pressure regulating pipeline according to the instructions issued by the host computer; an acceleration simulation subsystem communicatively connected to the host computer for simulating flight output so that the actuator of the anti-G pressure regulator generates displacement under the action of force to open the valve for gas to enter the anti-G suit; and a signal acquisition and processing subsystem communicatively connected to the host computer for transmitting the acquired output magnitude and the pressure change condition of the anti-G suit to the host computer, enabling the host computer to implement the performance test of the anti-G suit system based on the obtained data, ensuring the use safety of the anti-G suit system and improving the use experience of pilots.

Description

Technical Field

[0001] The present invention relates to the technical field of automated testing, and more particularly to a performance testing system for an anti-G suit system. Background Art

[0002] When a fighter jet performs aerial maneuvers or aerobatics, it generates continuous acceleration, mainly centripetal acceleration (+Gz). At this time, the pilot feels the inertial force acting from head to toe, and the human blood accumulates in the abdomen and lower limbs under the action of the inertial force. To reduce the resulting ischemia and hypoxia of the brain tissue, an anti-G suit system consisting of an anti-G suit, an anti-G regulator, and related anti-G regulation pipelines is generally used for protection. By inflating the anti-G suit, pressure is formed on the pilot's abdomen and lower limbs to prevent blood from gathering downward, thereby improving the pilot's anti-G endurance.

[0003] Since the pressure value of the anti-G suit increases with the increase of the inflation volume, the pressure value of the anti-G suit should not only provide protection at the corresponding acceleration, but also avoid causing discomfort to the pilot due to excessive pressure value. Moreover, the process of the pilot losing consciousness in the air is very fast, often within a few seconds. Therefore, the dynamic physical properties of the anti-G suit system, such as when to activate the anti-regulator, the charging and discharging speed of the anti-G suit, and the pressure of the anti-G suit at different accelerations, will directly affect the anti-G effect. Therefore, it is urgent to propose a performance testing system for the anti-G suit system to test the performance of the anti-G suit system, ensure the safety of use of the anti-G suit system, and improve the pilot's experience. Summary of the Invention

[0004] Therefore, the present invention provides a performance testing system for an anti-G suit system to test the performance of the anti-G suit system, ensure the safety of use of the anti-G suit system, and improve the pilot's experience.

[0005] An embodiment of the present invention discloses a performance testing system for an anti-G suit system, including: a host computer for issuing instructions; a gas source pressure control subsystem communicatively connected to the host computer for inputting gas into the anti-G suit through the anti-G regulation pipeline according to the instructions issued by the host computer; an acceleration simulation subsystem communicatively connected to the host computer for simulating flight output so that the actuator of the anti-G regulator generates displacement under the action of force and opens the valve for gas to enter the anti-G suit; a signal acquisition and processing subsystem communicatively connected to the host computer for transmitting the collected output magnitude and the pressure change of the anti-G suit to the host computer.

[0006] Optionally, it further includes: a positioning and installation subsystem communicatively connected to the host computer for adjusting the test position of the anti-G regulator according to the instructions received from the host computer.

[0007] Optionally, the positioning and mounting subsystem includes: a stepper motor controller, a stepper motor driver, a stepper motor, and a positioning guide rail. The anti-G regulator is fixedly mounted on the positioning guide rail. Among them, the stepper motor controller is communicatively connected to the host computer, and controls the stepper motor driver to drive the stepper motor to operate and drive the positioning guide rail to move according to the positioning instruction sent by the host computer, so that the anti-G regulator moves to the test position along with the positioning guide rail.

[0008] Optionally, the air source pressure control subsystem includes: an air source device, a pressure reducer, a solenoid valve, an electro-pneumatic proportional valve, and a gas pressure sensor; among them, the air source device reduces the pressure through the pressure reducer on the gas transmission pipeline and inputs gas to the anti-G suit through the anti-G pressure regulating pipeline; the solenoid valve and the electro-pneumatic proportional valve are arranged on the gas transmission pipeline according to the gas output direction, the solenoid valve is connected to the host computer and is used to control the on / off of the gas transmission pipeline; the electro-pneumatic proportional valve is connected to the host computer and is used to control the gas volume input to the anti-G suit and transmit the current valve opening to the host computer; the gas pressure sensor is connected to the host computer and is arranged at the connection interface of the gas transmission pipeline and the anti-G pressure regulating pipeline, and is used to detect the gas pressure entering the anti-G pressure regulating pipeline and transmit the current gas pressure entering the anti-G pressure regulating pipeline to the host computer.

[0009] Optionally, the acceleration simulation subsystem includes: a magnetic axis linear motor controller, a magnetic axis linear motor driver, and a magnetic axis linear motor; among them, the magnetic axis linear motor controller is communicatively connected to the host computer, and controls the magnetic axis linear motor driver to drive the magnetic axis linear motor and drive the magnetic axis to output force according to the load application instruction sent by the host computer, so that the actuator connected to the acceleration sensor in the anti-G regulator located at the test position moves along the magnetic axis output force direction and transmits the collected acceleration to the host computer.

[0010] Optionally, the signal acquisition and processing subsystem includes an anti-G suit pressure sensor and a magnetic axis output force acquisition module; the anti-G suit pressure sensor is used to detect the pressure of the anti-G suit and transmit the pressure of the anti-G suit to the host computer, and the magnetic axis output force acquisition module is used to acquire the output force magnitude of the magnetic axis and transmit the output force magnitude of the magnetic axis to the host computer.

[0011] Optionally, the system further includes: a data acquisition terminal, connected to the host computer, for obtaining the identification information of the anti-G suit system.

[0012] Optionally, the system further includes: a display device, for displaying test data.

[0013] Optionally, the air source pressure control subsystem further includes a first pressure gauge and a second pressure gauge. The first pressure gauge is disposed on the connecting pipeline between the air source device and the pressure reducer, and the second pressure gauge is disposed on the connecting pipeline between the pressure reducer and the solenoid valve, respectively for measuring and displaying the pipeline pressure of the corresponding pipeline.

[0014] Optionally, the magnetic axis output force acquisition module includes a current acquisition module and / or a high-precision force sensor. Among them, the current acquisition module is used to acquire the current value of the magnetic axis linear motor and transmit the current value to the magnetic axis linear motor controller, and the high-precision force sensor is used to acquire the output force of the magnetic axis motor and transmit the output force to the magnetic axis linear motor controller after decoding by the decoder.

[0015] Optionally, the test position is the position where the acceleration sensor of the anti-G regulator contacts the end face of the magnetic axis and the acceleration parameter collected by the acceleration sensor is zero.

[0016] Optionally, the positioning and installation subsystem further includes a grating scale and an encoder. The grating scale is disposed on the positioning guide rail and is used to transmit the detected displacement of the positioning guide rail to the stepper motor controller after decoding by the encoder.

[0017] Optionally, the air source pressure control subsystem further includes an air source pressure sensor, which is disposed in the gas transmission pipeline between the air source device and the pressure reducer, and is used to detect the gas pressure in the gas transmission pipeline and transmit the collected gas pressure to the upper computer.

[0018] The technical solution of the present invention has the following advantages:

[0019] The anti-G suit system performance test system provided by the present invention issues an instruction through the upper computer, so that the air source pressure control subsystem connected to the upper computer inputs gas to the anti-G suit through the anti-G pressure regulating pipeline according to the instruction issued by the upper computer, and the acceleration simulation subsystem simulates the flight output force, so that the actuator of the anti-G regulator generates a displacement under the action of force, opens the valve for the gas to enter the anti-G suit, and the signal acquisition and processing subsystem transmits the collected output force and the pressure change of the anti-G suit to the upper computer, so that the upper computer can realize the test of the anti-G suit system performance according to the acquired data, ensuring the use safety of the anti-G suit system and improving the pilot's use experience. Description of the Drawings

[0020] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 Schematic diagram of the performance test system of the anti-G suit system in the embodiment of the present invention;

[0022] Figure 2 Schematic diagram of the performance test system of the anti-G suit system in the embodiment of the present invention;

[0023] Figure 3 Schematic diagram of the performance test system of the anti-G suit system in the embodiment of the present invention;

[0024] Figure 4 Schematic diagram of the performance test system of the anti-G suit system in the embodiment of the present invention;

[0025] Figure 5 Schematic diagram of the positioning and installation subsystem in the embodiment of the present invention;

[0026] Figure 6 Schematic diagram of the gas source pressure control subsystem in the embodiment of the present invention;

[0027] Figure 7 Schematic diagram of the acceleration simulation subsystem in the embodiment of the present invention;

[0028] Figure 8 Flowchart of a specific example of the performance test method of the anti-G suit system in the embodiment of the present invention;

[0029] Figure 9 Test curve graph of a specific example of the performance test method of the anti-G suit system in the embodiment of the present invention;

[0030] Figure 10 Test curve graph of a specific example of the performance test method of the anti-G suit system in the embodiment of the present invention. Specific embodiments

[0031] The following will clearly and completely describe the technical solutions of the present invention with reference to the drawings. Obviously, the described embodiments are some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0032] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and should not be construed as indicating or implying relative importance.

[0033] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can also be the communication inside two elements. It can be a wireless connection or a wired connection. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0034] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0035] The anti-G suit system consists of an anti-G suit, an anti-G pressure regulator (hereinafter referred to as the anti-regulator) and the relevant anti-G pressure regulating pipeline system. When there is no initial acceleration, the anti-regulator pre-fills a part of the gas into the anti-G suit to fill the cavity of the anti-G suit, which is convenient for quickly increasing the pressure of the anti-G suit when the acceleration rises. As the acceleration rises to a certain acceleration threshold (such as between 1.4 Gz - 2.1 Gz), the anti-regulator is officially activated, and according to the detected acceleration of the fighter plane, it inflates the anti-G suit according to a certain mathematical relationship to form a pressure acting on the pilot's abdomen and lower limbs, preventing blood from gathering downward, thereby improving the pilot's anti-G endurance.

[0036] The embodiment of the present invention discloses a performance test system for an anti-G suit system. The anti-G suit system includes: an anti-G suit, an anti-G pressure regulator and an anti-G pressure regulating pipeline. Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 As shown in, the performance test system for the anti-G suit system includes:

[0037] A host computer, which is used to issue instructions. The instructions can include a test start instruction, a pressurization instruction for the gas source pressure control subsystem, a load application instruction for the acceleration simulation subsystem, etc. The types of instructions issued by the host computer in the embodiments of the present application are not limited. Those skilled in the art can issue corresponding instructions through the host computer according to actual needs to implement the test of the anti-G suit system.

[0038] The air source pressure control subsystem, communicatively connected to the host computer, is configured to input gas into the anti-G suit through the anti-G pressure regulating pipeline according to the instructions issued by the host computer.

[0039] The acceleration simulation subsystem, communicatively connected to the host computer, is configured to simulate flight output, so that the actuator of the anti-G pressure regulator generates displacement under the action of force and opens the valve for gas to enter the anti-G suit.

[0040] The signal acquisition and processing subsystem, communicatively connected to the host computer, is configured to transmit the acquired output magnitude and the pressure change of the anti-G suit to the host computer.

[0041] The anti-G suit system performance test system provided by the embodiment of the present invention issues instructions through the host computer, so that the air source pressure control subsystem connected to the host computer inputs gas into the anti-G suit through the anti-G pressure regulating pipeline according to the instructions issued by the host computer, and the acceleration simulation subsystem simulates flight output, so that the actuator of the anti-G pressure regulator generates displacement under the action of force and opens the valve for gas to enter the anti-G suit, and the signal acquisition and processing subsystem transmits the acquired output magnitude and the pressure change of the anti-G suit to the host computer, enabling the host computer to test the performance of the anti-G suit system according to the acquired data, ensuring the use safety of the anti-G suit system, and improving the use experience of the pilot.

[0042] As an optional implementation manner of the present invention, as Figure 2 shown, the system further includes: a positioning and installation subsystem, communicatively connected to the host computer, and configured to adjust the test position of the anti-G pressure regulator according to the instructions received from the host computer.

[0043] Exemplarily, the anti-G pressure regulator is installed on the positioning guide rail of the positioning and installation subsystem. The host computer controls the stepping motor to drive the positioning guide rail according to the different models of the anti-G pressure regulator in the anti-G suit system, so that the anti-G pressure regulator makes vertical positioning movement and is moved to the position to be tested.

[0044] As an optional implementation manner of the present invention, the test position is the position where the acceleration sensor of the anti-G pressure regulator contacts the end face of the magnetic axis and the acceleration parameter collected by the acceleration sensor is zero. By adjusting the position of the anti-G pressure regulator, the acceleration sensor of the anti-G pressure regulator contacts the end face of the output magnetic axis and the acceleration parameter collected by the acceleration sensor is zero. At this time, it indicates that the magnetic axis does not output force, ensuring that when testing the anti-G suit system, the acceleration simulation subsystem can accurately test the working performance of the anti-G suit system under different forces according to the output requirements, and ensuring the accuracy of the test results.

[0045] As an optional embodiment of the present invention, as Figure 5 shown, the positioning and mounting subsystem includes: a stepper motor controller, a stepper motor driver, a stepper motor, and a positioning guide rail. The anti-G regulator is fixedly mounted on the positioning guide rail. Among them, the stepper motor controller is communicatively connected to the host computer, and controls the stepper motor driver to drive the stepper motor to operate and drive the positioning guide rail to move according to the positioning instruction issued by the host computer received, so that the anti-G regulator moves to the test position along with the positioning guide rail. Among them, the stepper motor controller, the stepper motor driver, and the stepper motor can be integrated in the test cabinet 501.

[0046] As an optional embodiment of the present invention, as Figure 6 shown, the air source pressure control subsystem includes: an air source device, a pressure reducer, a solenoid valve, an electro-pneumatic proportional valve, and a gas pressure sensor; among them, the air source device reduces the pressure through the pressure reducer on the gas transmission pipeline and then inputs gas to the anti-G suit through the anti-G pressure regulating pipeline; the solenoid valve and the electro-pneumatic proportional valve are arranged on the gas transmission pipeline according to the gas output direction, the solenoid valve is connected to the host computer and is used to control the on / off of the gas transmission pipeline; the electro-pneumatic proportional valve is connected to the host computer and is used to control the gas volume input to the anti-G suit and transmit the current valve opening degree to the host computer; the gas pressure sensor is connected to the host computer and is arranged at the connection interface of the gas transmission pipeline and the anti-G pressure regulating pipeline, and is used to detect the gas pressure entering the anti-G pressure regulating pipeline and transmit the current gas pressure entering the anti-G pressure regulating pipeline to the host computer. The anti-G pressure regulating pipeline of the anti-G suit sends gas into the anti-G suit to realize inflation and pressurization of the anti-G suit.

[0047] Exemplarily, the host computer judges the working air source pressure required by the anti-G suit according to the product model of the anti-G regulator of the anti-G suit to be measured, converts the air source pressure into an electrical signal according to the pressure and electrical signal ratio relationship of the electro-pneumatic proportional valve, transmits it to the electro-pneumatic proportional valve through the data acquisition unit in the PCI-E slot, controls the valve size of the electro-pneumatic proportional valve through the electrical signal, and feeds back the air source pressure to the host computer through the gas pressure sensor for real-time monitoring. When the pressure of the anti-G suit or the air source pressure exceeds the limit value, the air source input can be disconnected through the solenoid valve to relieve the pressure of the anti-G suit.

[0048] As an optional embodiment of the present invention, as Figure 7As shown in the figure, the acceleration simulation subsystem includes: a magnetic axis linear motor controller, a magnetic axis linear motor driver, and a magnetic axis linear motor. Among them, the magnetic axis linear motor controller is communicatively connected to the host computer, and controls the magnetic axis linear motor driver to drive the magnetic axis linear motor and drive the magnetic axis to generate force according to the load application instruction sent by the host computer, so that the actuator connected to the acceleration sensor in the anti-G regulator at the test position moves along the direction of the magnetic axis force and transmits the collected acceleration to the host computer. The magnetic axis linear motor controller and the magnetic axis linear motor driver can be integrated in the test cabinet 501.

[0049] Exemplarily, on the aircraft, the anti-G regulator senses the magnitude of the centripetal force, causing a certain displacement of its acceleration sensor, and then opening the valve for gas to enter the anti-G suit through the actuator connected to the acceleration sensor to inflate the anti-G suit. The magnitude of the centripetal force and its rate of change determine the magnitude of the acceleration and the acceleration growth rate sensed by the acceleration sensor. Therefore, as long as the test system can simulate an appropriate centripetal force, it can simulate the acceleration working conditions of the anti-G suit system. The host computer converts the acceleration (Gz) test curve edited by the user into a force control signal curve (F = m * Gz) and sends it to the magnetic axis linear motor controller through the serial port. In the torque mode, it controls the magnetic axis force on the motor. The magnetic axis contacts the acceleration sensor of the anti-G regulator, and drives the acceleration sensor to move up and down during the force application process, opening the inlet valve of the anti-G regulator, and gas enters the anti-G suit. The magnetic axis linear motor in the test system is a transmission device that directly converts electrical energy into linear motion mechanical energy without any intermediate conversion mechanism. The magnetic axis is surrounded by a group of coils. When current is generated in the coils, the motor shaft moves. According to the principle of Ampere's force: F = kBLIN, where N is the number of turns of the coil (constant), B is the magnetic flux (constant), k is a constant coefficient, L is the length of the current-carrying wire (constant), and I is the value of the current flowing through the coil. It can be seen that the only variable affecting the force output of the motor shaft is I. Therefore, the magnetic axis linear motor controller can indirectly control the magnitude of the force by controlling the magnitude of the current in the motor coil.

[0050] As an optional implementation manner of the present invention, the signal acquisition and processing subsystem includes an anti-G suit pressure sensor and a magnetic axis force acquisition module. The anti-G suit pressure sensor is used to detect the pressure of the anti-G suit and transmit the pressure of the anti-G suit to the host computer. The magnetic axis force acquisition module is used to acquire the magnitude of the magnetic axis force and transmit the magnitude of the magnetic axis force to the host computer. So that the host computer can calculate the performance of the anti-G suit system according to the magnitude of the magnetic axis force and the change of the pressure of the anti-G suit. The specific calculation method can refer to the above method embodiment and will not be elaborated here.

[0051] As an alternative embodiment of the present invention, the system further includes: a data acquisition terminal, connected to the host computer, for acquiring the identification information of the anti-G suit system.

[0052] As an alternative embodiment of the present invention, the system further includes: a display device, for displaying test data.

[0053] As an alternative embodiment of the present invention, the air source pressure control subsystem further includes: a first pressure gauge and a second pressure gauge. The first pressure gauge is arranged on the connecting pipeline between the air source device and the pressure reducer, and the second pressure gauge is arranged on the connecting pipeline between the pressure reducer and the solenoid valve, respectively for measuring and displaying the pipeline pressure of the corresponding pipeline. The first pressure gauge arranged on the connecting pipeline between the air source device and the pressure reducer can be used to display the pressure of the air source device, and the second pressure gauge arranged on the connecting pipeline between the pressure reducer and the solenoid valve can be used to display the air source pressure after being reduced by the pressure reducer.

[0054] As an alternative embodiment of the present invention, the magnetic axis output force acquisition module includes: a current acquisition module and / or a high-precision force sensor. Among them, the current acquisition module is used to acquire the current value of the magnetic axis linear motor and transmit the current value to the magnetic axis linear motor controller, and the high-precision force sensor is used to acquire the output force magnitude of the magnetic axis motor and transmit the output force magnitude to the magnetic axis linear motor controller after being decoded by a decoder.

[0055] Exemplarily, the actual output force is acquired through a high-precision force sensor or the current value of the magnetic axis linear motor is acquired through the current acquisition module and transmitted to the magnetic axis linear motor controller, and the magnetic axis linear motor controller indirectly obtains the actual magnetic axis output force magnitude according to the acquired current value. The type and quantity of the magnetic axis output force acquisition module in the embodiments of the present application are not limited, and those skilled in the art can determine according to actual needs.

[0056] As an alternative embodiment of the present invention, the positioning and installation subsystem further includes: a grating scale and an encoder. The grating scale is arranged on the positioning guide rail and is used to transmit the detected displacement amount of the positioning guide rail to the stepping motor controller after being decoded by the encoder.

[0057] Exemplarily, the end face of the acceleration inductor of the anti-regulator is in contact with the end face of the magnetic axis without being stressed. During the positioning process of the test position, the displacement amount signal can be fed back through the grating scale installed on the positioning guide rail. The higher the accuracy of the grating scale, the more accurate the positioning result of the test position. In the embodiments of the present application, a grating scale with an accuracy of 1μm is adopted, and the corresponding positioning accuracy can reach 1mm. Through high-precision positioning, the accuracy and reliability of the test results are ensured.

[0058] As an alternative embodiment of the present invention, the air source pressure control subsystem further includes an air source pressure sensor disposed in the gas transmission pipeline between the air source device and the pressure reducer, for detecting the gas pressure in the gas transmission pipeline and transmitting the collected gas pressure to the upper computer. By providing an air source pressure sensor on the gas transmission pipeline between the air source device and the pressure reducer, the pressure of the air source device can be monitored to ensure that the pressure of the air source device meets the stamping requirements of the corresponding anti-G suit system, avoiding damage to the anti-G suit caused by excessive pressure or affecting the test results due to too low pressure.

[0059] For Figure 3 、 Figure 4 The components of the test system not shown in

[0060] In the embodiments of the present application, the method for the upper computer to implement the performance test of the anti-G suit system based on the acquired data may include, as Figure 8 shown:

[0061] Step 101, obtaining the identification information of the anti-G regulator of the anti-G suit system.

[0062] Exemplarily, the identification information of the anti-G regulator of the anti-G suit system can be obtained by the user uploading through the user terminal, or can be obtained by sending a data acquisition instruction after establishing a connection with the user terminal. The embodiments of the present application do not limit the acquisition method of the identification information, and those skilled in the art can determine it according to actual needs.

[0063] Step 102, according to the identification information of the anti-G regulator of the anti-G suit system, loading the test program corresponding to the pre-compiled acceleration test curve, where the pre-compiled acceleration curve characterizes the relationship between the load and time.

[0064] Exemplarily, multiple test programs corresponding to the acceleration test curves of different anti-G suit systems are pre-compiled and stored, where the pre-compiled acceleration curve characterizes the relationship between the load and time. According to the obtained identification information of the anti-G regulator of the anti-G suit system, the test program corresponding to the identification information is loaded.

[0065] Step 103, when receiving the confirmation test instruction, triggering the operation of the test program, controlling the load application device to apply a load to the anti-G regulator according to the pre-compiled acceleration test curve, so that the actuator of the anti-G regulator generates a displacement under the action of the applied load, opening the valve of the gas transmission channel, and enabling the air source device to input gas to the anti-G suit through the gas transmission channel.

[0066] Exemplarily, the load application device can be a magnetic axis. The linear motor of the magnetic axis is integrated in the acceleration simulation subsystem and, together with the magnetic axis linear motor controller, magnetic axis linear motor driver, and magnetic axis linear motor in the acceleration simulation subsystem, realizes load application.

[0067] The generation method of the confirmation test instruction can be an interactive module that displays the confirmation test. When the user operates this interactive module of the confirmation test, it triggers the generation of the confirmation test instruction. When the anti-G suit system performance test system receives this confirmation test instruction, it triggers the operation of the test program and controls the load application device to apply a load to the anti-G regulator according to the pre-compiled acceleration test curve corresponding to this test program.

[0068] The anti-G regulator consists of components such as an acceleration sensor, an actuator, and a valve. The acceleration sensor is used to sense the acceleration generated by the actuator under the action of the load applied by the load application device, and under the action of the applied load, the anti-G regulator generates an acceleration to simulate the acceleration generated by the pilot during flight in the air; the actuator generates a displacement under the action of the applied load to open the valve of the gas transmission channel, so that the gas source device inputs gas into the anti-G suit through the conducting gas transmission channel, increasing the gas pressure inside the anti-G suit and ensuring the safety of the pilot's flight.

[0069] The magnitude of the gas pressure output by the gas source device can be equal to the pressure corresponding to the anti-G suit inlet pressure requirement. After the valve of the gas transmission pipeline is conducted, gas is directly input into the anti-G suit. It can also be to set a pressure reducing valve and an electro-pneumatic proportional valve on the gas transmission pipeline. The pressure reducing valve controls the magnitude of the gas pressure output from the gas source device, and the valve opening of the electro-pneumatic proportional valve controls the amount of gas input into the anti-G suit per unit time.

[0070] Step 104: Determine the performance of the anti-G suit system according to the applied load and the pressure change of the anti-G suit collected by the anti-G suit pressure sensor.

[0071] Exemplarily, for the study of the working performance of the anti-G regulator at different accelerations, since the mass of a specific model of anti-G regulator is fixed, according to Newton's second law F = m*a, since the load application device applies a load according to the pre-established acceleration test curve and the magnitude of the applied load is known, the study of the working performance of the anti-G regulator at different accelerations can be transformed into the study of the working performance of the anti-G regulator at different loads. According to the applied load and the pressure change in the anti-G suit collected by the anti-G suit pressure sensor, the dynamic physical properties of the anti-G suit system such as the start-up time of the anti-G suit, the charging and discharging speed of the anti-G suit, and the anti-G suit pressure magnitude at different accelerations can be obtained, realizing the test of the anti-G suit system performance.

[0072] The performance testing method for the anti-G suit system provided by the embodiments of the present invention obtains the identification information of the anti-G regulator of the anti-G suit system, loads and runs the acceleration test curve test program corresponding to the anti-G suit system, controls the load application device to apply a load to the anti-G regulator according to the acceleration curve, so that the acceleration sensor of the anti-G regulator generates a displacement under the action of the applied load, opens the valve of the gas transmission channel, enables the gas source device to input gas to the anti-G suit through the gas transmission channel, and determines the performance of the anti-G suit system according to the applied load and the pressure change of the anti-G suit collected by the anti-G suit pressure sensor. By testing the performance of the anti-G suit system, the use safety of the anti-G suit system is ensured, and the use experience of the pilot is improved.

[0073] As an optional embodiment of the present invention, the pre-compiled acceleration test curve includes: a start test curve segment and a dynamic performance test curve segment, wherein the start test curve segment includes multiple curve segments with gradually increasing load gradients, and the dynamic performance test curve segment includes multiple trapezoidal curve segments with gradually increasing load gradients.

[0074] Exemplarily, the pre-compiled acceleration test curve includes a start test curve segment and a dynamic performance test curve segment. When there is no initial acceleration, a part of the gas is pre-filled into the anti-G suit by applying a load according to the start test curve segment to fill the cavity of the anti-G suit, which is convenient for quickly increasing the pressure of the anti-G suit when the acceleration rises. As Figure 9 shown, the initial load value is 0, the start test curve segment starts from a 1.4G load, the platform of each load gradient lasts for 5s, the load value step size is 0.1, and the load continuously increases by an increment of 0.1 step size until it reaches 2.1G. The dynamic performance test curve segment is composed of multiple standard trapezoidal curve segments, the base load is 1.4G, the platform period of each trapezoidal curve segment lasts for 20s, the platform starts from 3G, and the load step size between adjacent platform periods is 1G, increasing sequentially until the platform load reaches 9G. In the embodiments of the present application, the base load value, platform value, load growth rate between adjacent platforms, and load duration of each platform of the start test curve segment and the dynamic performance test curve segment are not limited, and those skilled in the art can set them according to the type of the anti-G suit system. The test programs of the two different curves are distinguished by the flagDynamic flag bit. For the load magnitude corresponding to the curve segment between two adjacent trapezoidal curve segments in the dynamic performance test curve segment, it is determined according to the initial load magnitude of the start test curve segment. For example, Figure 9 if the initial load is 1.4G, the load magnitude corresponding to the curve segment between two adjacent trapezoidal curve segments in the dynamic performance test curve segment can be 1.4G, and those skilled in the art can also set other load values as needed.

[0075] As an alternative embodiment of the present invention, step 103 includes: controlling the load application device to apply a load according to the start test curve segment; when the difference between the current pressure of the anti-G suit and the pre-charge pressure is greater than a preset value, controlling the load application device to apply a load according to the dynamic performance test curve segment.

[0076] Exemplarily, when the anti-G suit system performance test system is applying a load according to the start test curve segment, the pressure of the anti-G suit is collected by the anti-G suit pressure sensor and the acquisition card, and can be smoothed by a low-pass filter and displayed in real time. The current pressure of the anti-G suit collected in real time is compared with the pre-charge pressure. When the difference between the current pressure of the anti-G suit and the pre-charge pressure is greater than the preset value, it is determined that the anti-regulator is started, the current load value is read, recorded as the start load G value (startG), and the flagDynamic flag bit is set to 1. At this time, the start test curve segment stops running and transfers to the dynamic performance test curve segment.

[0077] The determination method of the pre-charge pressure can be that during the process of running the test program corresponding to the start test curve segment, the pressure value of the anti-G suit is read at a preset frequency (such as 10 Hz), and the average value of the anti-G suit pressure within a preset duration (such as 2 s) is used as the pre-charge pressure (prePressure). The current pressure value of the anti-G suit collected in real time is compared with the average value of the anti-G suit pressure within the previous 2 s. When the difference between the two is greater than the preset value (the change amount between the two is greater than 30%), it is determined that the anti-G regulator of the anti-G suit system is started at this time, and the load application device is controlled to apply a load according to the dynamic performance test curve segment to test the performance of the anti-G regulator after startup. The embodiments of the present application do not limit the size of the above preset value, and those skilled in the art can determine the timing of running the dynamic performance test curve segment according to the actually tested anti-G suit system.

[0078] As an alternative embodiment of the present invention, the method further includes: when the load application device is currently applying a load according to any trapezoidal curve segment in the dynamic performance test curve segment, starting to time from the end moment of applying the load according to the current trapezoidal curve segment until the preset duration is reached, responding to execute the load application operation of the next gradient curve segment, and controlling the load applied by the load application device to be within the target load range within the preset duration.

[0079] Exemplarily, when running the test curve corresponding to the dynamic performance test curve segment, since the dynamic performance test curve segment is composed of multiple trapezoidal curve segments with sequentially increasing load gradients, the load application device can apply a load according to any trapezoidal curve segment in the dynamic performance test curve segment.

[0080] Such as Figure 9As shown, any trapezoidal curve segment consists of three segments: a load rise segment, a plateau segment, and a load drop segment. If the load is currently applied according to trapezoidal curve segment 1, when it ends, the timing operation will be responded to until the preset time is reached and then the load will be applied according to trapezoidal curve segment 2. The preset time lengths of the intervals between adjacent trapezoidal curve segments can be the same or different, and those skilled in the art can determine it according to actual needs. In the embodiment of the present application, the preset time lengths of the intervals between adjacent trapezoidal curve segments are the same, and the preset time length can be any time length greater than 20s, and the load applied by the load application device is controlled to be within the target load range within the preset time length. In the embodiment of the present application, the target load range can be determined based on the initial load value of the startup test curve segment. As shown in FIG. Figure 9 If the initial load value of the start-up test curve segment is 1.4G, the target load range can be centered on the initial load value and fluctuate by 5%.

[0081] Specifically, Figure 9 As shown, in order to fully test the anti-g suit system and ensure the safety of the anti-g suit system, the anti-g suit system performance test method recorded in the embodiment of the present application performs a nested loop test in the order of the plateau load from small to large. The outer loop of the nested loop is: set the starting time tStart(n) of the segmented dynamic curve to the current time (tNow+10)s, when it reaches (tNow+10)s, start running the trapezoidal curve segment 1, the platform value n of the plateau period of the trapezoidal curve segment 1 is 3G (the value range of the platform load value n in the embodiment of the present application is 3G~9G), when the trapezoidal curve segment 1 ends, it enters the inner loop; the inner loop (i.e. the transition section of the adjacent trapezoidal curve segments): two conditions must be met during the inner loop: ① the running time (tNow minus the value of tStart(n)) is greater than 20s, that is, the difference between the current time and the start time of tStart(n) is greater than 20s; ② the load value applied by the load application device is within the range of (1.4G±5%). After the inner loop condition is met, n=n+1 is set to enter the outer loop. By forming a dynamic performance test curve segment with multiple trapezoidal curve segments with different plateau values, when testing according to the dynamic performance test curve segment, the test of different trapezoidal curve segments can be completed at one time through nested loop testing, and the curve is divided into trapezoidal curve segments with front and rear basic loads of 1.4G and a plateau period of 10s according to different platform values. While continuously testing the performance of the anti-g suit system, the pressure of the anti-g suit can be statistically analyzed according to different trapezoidal curve segments. While realizing a comprehensive multi-load test of the anti-g suit system, the pressure gradient can be calculated according to the continuously changing load, and the performance of the anti-g suit system can be determined according to the change in the obtained pressure gradient.

[0082] As an optional embodiment of the present invention, step 104 includes: obtaining performance parameters of the anti-G suit system under loads corresponding to trapezoidal curve segments with different load gradients in the dynamic performance test curve segment according to the applied load and the pressure change of the anti-G suit, where the performance parameters include any combination of the inflation speed of the anti-G suit, the deflation speed of the anti-G suit, the steady-state value of the anti-G suit pressure, the dynamic deviation value of the anti-G suit pressure, and the pressure gradient; and determining the performance of the anti-G suit system according to the performance parameters.

[0083] Exemplarily, as Figure 10 shown, the inflation speed is the time difference between the time point when the anti-G suit pressure starts to rise initially and the time point when the applied load G starts to rise initially, that is, the time when the anti-G suit inflation to build pressure lags behind the load application, which is called the anti-regulator response time, denoted as t1Rise(n), where n is the platform load value corresponding to the plateau period of the current trapezoidal curve segment; the difference between the time point when the anti-G suit completes inflation and the time point when the curve of the applied load value rises to the plateau is called the anti-G suit inflation to build pressure time, denoted as t2Rise(n). t1Rise(n) and t2Rise(n) together represent the inflation speed of the anti-G suit. The deflation speed: corresponding to the inflation speed, denoted by t3Fall(n) and t4Fall(n).

[0084] The steady-state value of the anti-G suit pressure is the average value of the anti-G suit pressure during the plateau period of the anti-G suit pressure curve, denoted by meanPressure(n); the dynamic deviation value of the anti-G suit pressure is the standard deviation of the anti-G suit pressure during the plateau period of the anti-G suit pressure curve, taken as the dynamic deviation value of the anti-G suit pressure pressureSD(n); the pressure gradient: the difference between the pressure values during the plateau periods of the anti-G suit pressure curve segments corresponding to adjacent trapezoidal curve segments gradientG(n).

[0085] Specifically, taking tStart(n) and tStart(n + 1) as the starting and ending points of the time slice, the arrays G(time, G) and pressure(time, pressure) are divided into different slices and saved into the arrays G(time, G) and pressuren(time, pressure) respectively. For example, pressure4(time, pressure) represents the anti-G suit pressure array corresponding to the platform load of 4G.

[0086] Read the load values corresponding to the load value curve and the anti-G suit pressure values corresponding to the anti-G suit pressure curve at a target frequency (such as 100 Hz), store them in two-dimensional arrays G(time, G) and pressure(time, pressure) respectively, and draw a histogram based on the values in the two-dimensional arrays. Determine the high reference position and low reference position of the load value array and the anti-G suit pressure value array in each trapezoidal curve segment respectively. The high reference position is the central height of the interval with the most waveform points in the upper part of the histogram, and the low reference position is the central height of the interval with the most waveform points in the lower part of the histogram.

[0087] Find the starting time point tG1 and the ending time point tG2 of the rising segment of the trapezoidal load value curve according to the high reference position and the low reference position respectively. The starting time is the time of the last intersection point of the array and the low reference position, and the ending time is the time of the first intersection point of the array and the high reference position. Similarly, find the starting time point tG3 and the ending time point tG4 of the falling segment of the trapezoidal load value curve. Use the same method to find the starting time tP1 and the ending time tP2 of the rising segment of the anti-G suit pressure curve, and the starting time tP3 and the ending time tP4 of the falling segment.

[0088] According to the definition, the inflation speed of the anti-G suit t1Rise(n) = tP1 - tG1, t2Rise(n) = tP2 - tG2, the deflation speed of the anti-G suit t3Fall(n) = tP3 - tG3, t4Fall(n) = tP4 - tG4 can be calculated. According to the anti-G suit pressure values in the platform time period tP2~tP3 of the anti-G suit pressure curve, calculate the average value meanPressure(n) and the standard deviation pressureSD(n).

[0089] Pressure gradient calculation: The pressure difference gradientG(n) = meanPressure(n) - meanPressure(n - 1) between the pressure values in the platform periods of the anti-G suit pressure curve segments corresponding to adjacent trapezoidal curve segments, where n takes integer values between 4 and 9.

[0090] As an optional implementation manner of the present invention, the method further includes: reading the applied load value and the pressure value of the anti-G suit at a preset frequency, and storing the read load value, pressure value, and the calculated performance parameters into a target database together with the identification information.

[0091] Exemplarily, the embodiments of the present application do not limit the preset frequency, which can be determined by those skilled in the art according to actual needs. In the embodiments of the present application, the preset frequency is 100 Hz. The load values obtained according to the preset frequency, the pressure values of the anti-G suit, and the performance parameters of the anti-G suit calculated according to the load values and pressure values are stored together with the corresponding identification information of the anti-G suit in the corresponding tables and fields of the target database, facilitating subsequent search and analysis.

[0092] As an optional embodiment of the present invention, the method further includes: when receiving a test data query request, querying the corresponding test data in the target database according to the identification information of the anti-G suit system corresponding to the data query request and triggering the execution of the printing program.

[0093] Exemplarily, retrieve the product performance parameters and experimental result files stored in the database according to the ID number of the product to be tested, generate a test report including the original curve, and trigger the connection to the printer to execute the printing operation. After confirmation and signature by the experimenter, a test report is formed.

[0094] As an optional embodiment of the present invention, the method further includes: when an abnormal test situation occurs, responding to the alarm and stopping the test operation.

[0095] Exemplarily, the determination criteria for abnormal test situations can be formulated in advance. For example, the overlimit value of the anti-G suit pressure, the air source pressure not being within the working range, and other possible working faults of the platform can all respond to the alarm in a timely manner according to the preset criteria and control the stop of the test to ensure the safety of the entire test process.

[0096] The dynamic physical performance test method for the anti-G suit system provided by the embodiments of the present invention can dynamically simulate the air source pressure and load conditions required for the operation of the anti-G suit system to be tested, and can automatically, quickly, and accurately complete the tests of performance parameters such as pre-charging pressure, starting Gz value, inflation speed, deflation speed, steady-state value of the anti-G suit pressure, dynamic error of the anti-G suit pressure during the plateau period, and pressure gradient, ensuring the test efficiency and reducing the human measurement error. At the same time, since the test conditions corresponding to different anti-G suit systems may be different, the embodiments of the present invention can automatically match the test curve program according to the anti-G suit system model, and can also manually modify or select the matching test curve according to requirements, meeting the requirements of expandability and generality.

[0097] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations fall within the scope defined by the appended claims.

Claims

1. An anti-G suit system performance testing system, characterized in that, Including: A host computer for issuing instructions; An air source pressure control subsystem, communicatively connected to the host computer, for inputting gas into the anti-G suit through an anti-G pressure regulating pipeline according to the instructions issued by the host computer; An acceleration simulation subsystem, communicatively connected to the host computer, for simulating flight output, so that the actuator of the anti-G pressure regulator generates displacement under the action of force and opens the valve for gas to enter the anti-G suit; the acceleration simulation subsystem includes: a magnetic axis linear motor controller, a magnetic axis linear motor driver, and a magnetic axis linear motor; wherein, the magnetic axis linear motor controller is communicatively connected to the host computer, and controls the magnetic axis linear motor driver to drive the magnetic axis linear motor and drive the magnetic axis to generate force according to the load application instruction issued by the host computer, so that the actuator connected to the acceleration sensor in the anti-G pressure regulator located at the test position moves along the direction of the magnetic axis force and transmits the collected acceleration to the host computer; A signal acquisition and processing subsystem, communicatively connected to the host computer, for transmitting the collected output magnitude and the pressure change condition of the anti-G suit to the host computer; The system further includes: a positioning and installation subsystem, communicatively connected to the host computer, for adjusting the test position of the anti-G pressure regulator according to the instruction issued by the host computer; The positioning and installation subsystem includes: a stepping motor controller, a stepping motor driver, a stepping motor, and a positioning guide rail. The anti-G pressure regulator is fixedly installed on the positioning guide rail. Among them, the stepping motor controller is communicatively connected to the host computer, and controls the stepping motor driver to drive the stepping motor to rotate and drive the positioning guide rail to move according to the positioning instruction issued by the host computer, so that the anti-G pressure regulator performs up and down positioning operation, and moves the anti-G pressure regulator to the test position. The test position is the position where the acceleration sensor of the anti-G pressure regulator contacts the end face of the magnetic axis and the acceleration parameter collected by the acceleration sensor is zero.

2. The system according to claim 1, wherein The air source pressure control subsystem includes: an air source device, a pressure reducer, a solenoid valve, an electro-pneumatic proportional valve, and a gas pressure sensor; wherein, the air source device inputs gas into the anti-G suit through the anti-G pressure regulating pipeline after being decompressed by the pressure reducer on the gas transmission pipeline; the solenoid valve and the electro-pneumatic proportional valve are arranged on the gas transmission pipeline according to the gas output direction. The solenoid valve is connected to the host computer for controlling the on / off of the gas transmission pipeline; the electro-pneumatic proportional valve is connected to the host computer for controlling the gas volume input into the anti-G suit and transmitting the current valve opening to the host computer; the gas pressure sensor is connected to the host computer and is arranged at the connection interface of the gas transmission pipeline and the anti-G pressure regulating pipeline for detecting the gas pressure entering the anti-G pressure regulating pipeline and transmitting the current gas pressure entering the anti-G pressure regulating pipeline to the host computer.

3. The system according to claim 1, wherein The signal acquisition and processing subsystem includes an anti-G suit pressure sensor and a magnetic axis output acquisition module. The anti-G suit pressure sensor is used to detect the pressure of the anti-G suit and transmit the pressure of the anti-G suit to the host computer. The magnetic axis output acquisition module is used to collect the output magnitude of the magnetic axis and transmit the output magnitude of the magnetic axis to the host computer.

4. The system according to claim 1, wherein The system further includes a data acquisition terminal connected to the host computer for obtaining the identification information of the anti-G suit system.

5. The system according to claim 1, wherein The system further includes a display device for displaying test data.

6. The system according to claim 2, wherein The gas source pressure control subsystem further includes a first pressure gauge and a second pressure gauge. The first pressure gauge is arranged on the connecting pipeline between the gas source device and the pressure reducer, and the second pressure gauge is arranged on the connecting pipeline between the pressure reducer and the solenoid valve, respectively for measuring and displaying the pipeline pressure of the corresponding pipeline.

7. The system according to claim 3, wherein The magnetic axis output acquisition module includes a current acquisition module and / or a high-precision force sensor. Among them, the current acquisition module is used to collect the current value of the magnetic axis linear motor and transmit the current value to the magnetic axis linear motor controller. The high-precision force sensor is used to collect the output magnitude of the magnetic axis linear motor and transmit the output magnitude to the magnetic axis linear motor controller after decoding by the decoder.

8. The system according to claim 1, wherein The positioning and installation subsystem further includes a grating scale and an encoder. The grating scale is arranged on the positioning guide rail and is used to transmit the detected displacement amount of the positioning guide rail to the stepping motor controller after decoding by the encoder.

9. The system according to claim 2, wherein The gas source pressure control subsystem further includes a gas source pressure sensor arranged in the gas transmission pipeline between the gas source device and the pressure reducer for detecting the gas pressure of the gas transmission pipeline and transmitting the collected gas pressure to the host computer.

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