Aero-engine axial flow compressor experiment table system

Abstract

The invention discloses an experiment table system for an axial flow compressor of an aero-engine, and aims to break through the bottleneck by designing single-stage test and surge simulation, so that the experiment table system can measure experiment parameters such as pressure, flow, temperature and rotating speed of the axial flow compressor. Comprising an axial flow compressor suite, a sensor suite, a PLC, an asynchronous motor, an electric control valve and an exhaust device. A driving shaft of the asynchronous motor is connected with the axial flow compressor suite; the exhaust device is located at the rear end of the axial flow compressor suite, and the electric control valve is arranged on an airflow channel of the axial flow compressor suite and the exhaust device. The sensor suite is used for detecting pressure, temperature and air flow signals of the axial flow compressor and sending the collected signals to the PLC, and the PLC sends the signals to the industrial personal computer; the industrial personal computer controls the opening degree of a throttle valve of the electric control valve through the PLC, and the flow of air flowing through the axial flow air compressor is changed. The industrial personal computer controls the rotating speed of the asynchronous motor through the frequency converter.

Description

Technical Field

[0001] The present invention relates to the field of aero-engine teaching, and specifically to an axial compressor test bench system for aero-engines. Background Art

[0002] The axial compressor test bench of aero-engines is a core platform for verifying aerodynamic design, optimizing performance, and studying flow instability phenomena, and is crucial for studying the surge problem of aero-engines during aircraft flight. Although certain progress has been made in current research, the test bench system still has the following problems: 1. Insufficient versatility and modularity of the test bench. Existing test benches are mostly custom-designed for specific models or operating conditions, lacking a modular architecture that can adapt to different compressor sizes, speeds, and stages. Test benches for high-pressure-ratio multi-stage compressors are difficult to be compatible with the test requirements of low-pressure-ratio single-stage compressors, and the hardware system needs to be frequently modified, resulting in an extended R & D cycle and increased costs. In addition, the support capacity for special-shaped blades of existing test benches is limited, restricting the verification of cutting-edge technologies. 2. Limited accuracy in simulating dynamic operating conditions. During the actual operation of a compressor, it is necessary to cope with complex transient processes, such as acceleration, deceleration, surge, and distorted intake, while traditional test benches are mostly designed based on steady-state or quasi-steady-state conditions. Summary of the Invention

[0003] In order to solve the difficult problems existing in the axial compressor test bench of aero-engines, the present invention proposes an axial compressor test bench system for aero-engines, aiming to break through the bottleneck through the design of single-stage tests and surge simulations, so that the test bench system can measure experimental parameters such as the pressure, flow rate, temperature, and speed of the axial compressor. The present invention provides a more efficient verification platform for compressor stage design and surge research, and realizes the performance experiment and forced-surge experiment research of axial compressors.

[0004] The object of the present invention is achieved by the following technical solutions:

[0005] An axial compressor test bench system for aero-engines includes an axial compressor kit, a sensor kit, a PLC controller, an asynchronous motor, an electric control valve, an exhaust device, and a frequency converter; the drive shaft of the asynchronous motor is connected to the impeller of the axial compressor kit; the exhaust device is located at the rear end of the axial compressor kit, and the electric control valve is arranged on the air flow channel between the axial compressor kit and the exhaust device; the sensor kit is used to detect the pressure, temperature, and air flow rate signals of the axial compressor; the sensor kit sends the collected signals to the PLC controller, and the PLC controller is communicatively connected to the industrial control computer and sends the signals collected by the sensor kit to the industrial control computer; the industrial control computer sends command signals to the PLC controller to control the throttle opening of the electric control valve and change the air flow rate flowing through the axial compressor; the industrial control computer controls the speed of the asynchronous motor through the frequency converter.

[0006] Further, the PLC controller and the frequency converter are integrated in the electrical cabinet, and the electrical cabinet is also integrated with a power-on / off knob, an emergency stop button, an indicator light and connection lines.

[0007] Further, the industrial control computer is equipped with input and display devices, and the industrial control computer and its input and display devices are placed on the operation table.

[0008] Further, the axial flow compressor kit includes an air inlet device, a casing, a lubrication device, a blisk, rotor blades, stator blades, and a main shaft; the air inlet device is located at the front of the axial flow compressor for introducing air into the axial flow compressor; the stator blades are fixed on the inner wall of the casing and are located on the outer periphery of the blisk; the rotor blades are installed on the blisk, and the rotor blades and the blisk form the impeller of the axial flow compressor. The impeller is coaxially and fixedly connected to the main shaft, and the main shaft extends out of the casing and is connected to the drive shaft of the asynchronous motor through a coupling; the axial flow compressor is single-stage, and the casing is designed with a volute for changing the turning direction of the compressor air flow.

[0009] Further, the sensor kit includes an inlet pressure sensor, an outlet pressure sensor, an inlet temperature sensor, an outlet temperature sensor, and an air flow meter; the inlet and outlet pressure sensors are respectively arranged at the inlet and outlet of the axial flow compressor; the inlet and outlet temperature sensors are respectively arranged at the inlet and outlet of the axial flow compressor; the air flow meter is arranged in the connecting pipe between the outlet of the axial flow compressor and the exhaust device for collecting the air volume flow rate of the axial flow compressor in and out.

[0010] Further, the PLC controller is integrated with a temperature acquisition module, a pressure acquisition module, and a flow acquisition module; after the compressor temperature, pressure, and air flow signals measured by the sensor kit are respectively acquired by the temperature acquisition module, the pressure acquisition module, and the flow acquisition module of the PLC controller, the PLC controller then transmits them to the industrial control computer through the LAN data line and displays them through the display device of the industrial control computer.

[0011] Further, the asynchronous motor is powered by a high-voltage electrical box. The high-voltage electrical box converts 220V alternating current into 380V three-phase alternating current, filters it through a filter, and then outputs it to the frequency converter to provide three-phase power for the asynchronous motor; the PLC controller is powered by a DC power supply, and the DC power supply generates 24V direct current.

[0012] Further, a speed sensor and a tone wheel are arranged between the asynchronous motor and the axial flow compressor for measuring the actual speed of the engine.

[0013] Further, an experimental bench control system is integrated in the industrial control computer. The experimental bench control system includes:

[0014] An initialization module for user login, self-check of the database and communication lines, device management, user management, and parameter configuration of system hardware;

[0015] A test management module for monitoring the data collected by the test bench system, as well as setting test parameters and controlling test operations;

[0016] A data recording module for recording test operations, faults, and running time;

[0017] A data management module for managing the database, generating data reports, plotting / playing back compressor characteristic curves, and querying historical data.

[0018] The present invention has the following beneficial effects:

[0019] Improve the generality and modularity level: Through the modular architecture design that can adapt to different compressor sizes, speeds, and stages (such as the single-stage compressor volute structure, coordinated control of the electric control valve and frequency converter), the problems of high customization and poor compatibility of traditional test benches are solved. It supports the flexible switching of single-stage compressors with low pressure ratios to multi-stage compressors with high pressure ratios, significantly reducing the need for hardware modification, shortening the R & D cycle, and reducing costs.

[0020] Enhance the dynamic operating condition simulation ability: By combining the frequency converter to adjust the speed of the asynchronous motor (adjustable from 0 to 3000 revolutions per minute), the electric control valve to control the air flow in real time, and the multi-parameter real-time monitoring of the sensor kit (pressure, temperature, flow, speed), transient processes (such as acceleration, deceleration, surge, distorted intake) can be accurately simulated, breaking through the limitation of traditional test benches relying on steady-state conditions, and providing high-precision data support for the study of flow instability.

[0021] Achieve efficient surge tests and rapid response: Through the linkage of the industrial control computer and the PLC controller, it supports the automated operation of surge tests: when the compressor enters the surge state, the system can quickly trigger the electric control valve to open the exhaust channel and simultaneously shut down the asynchronous motor to ensure the safety of the experiment. This function provides a reliable platform for the study of surge mechanisms and the verification of prevention and control strategies.

[0022] Improve the test efficiency and data reliability: The PLC controller integrates a multi-channel acquisition module (temperature, pressure, flow), combined with the test bench control system of the industrial control computer (real-time display, data recording, characteristic curve plotting), realizing full-process automated monitoring and analysis, reducing human errors, and enhancing the accuracy and traceability of test data.

[0023] Optimize the operation convenience and system security: The integrated electrical cabinet (including emergency stop buttons, indicator lights) and the operation console (industrial control computer display device) simplify the test operation process; the system is built-in with a fault self-diagnosis unit and a running log recording function, which can quickly locate and handle abnormalities to ensure the safety of the test process. Description of the Drawings

[0024] Figure 1 It is a system composition structure diagram of an axial flow compressor test bench system for an aero - engine according to an embodiment of the present invention;

[0025] Figure 2 It is a schematic structural diagram of the axial flow compressor kit according to an embodiment of the present invention;

[0026] Figure 3 It is a signal transmission logic diagram of an axial flow compressor test bench system for an aero - engine according to an embodiment of the present invention;

[0027] Figure 4 It is a control system function architecture diagram of an axial flow compressor test bench system for an aero - engine according to an embodiment of the present invention;

[0028] In the figure:

[0029] 1. Axial flow compressor kit; 2. Sensor kit; 3. PLC controller; 4. Asynchronous motor; 5. Electric control valve; 6. Exhaust device; 7. Frequency converter; 8. DC power supply; 9. Filter; 10. Power distribution box; 11. Operating console. Detailed Embodiment

[0030] The technical solution of the present invention will be further introduced below in conjunction with the drawings and embodiments:

[0031] As Figure 1 shown, this embodiment is an axial flow compressor test bench system for an aero - engine, including: axial flow compressor kit 1, sensor kit 2, PLC controller 3, asynchronous motor 4, electric control valve 5, exhaust device 6, frequency converter 7, DC power supply 8, filter 9, power distribution box 10, operating console 11.

[0032] The drive shaft of the asynchronous motor 4 is connected to the impeller of the axial flow compressor kit 1; the exhaust device 6 is located at the rear end of the axial flow compressor kit 1, and the electric control valve 5 is arranged on the air flow channel between the axial flow compressor kit 1 and the exhaust device 6; the sensor kit 2 is used to detect the pressure, temperature and air flow signals of the axial flow compressor; the sensor kit 2 sends the collected signals to the PLC controller 3; the PLC controller 3 is communicatively connected to the industrial computer and sends the signals collected by the sensor kit 2 to the industrial computer; the industrial computer sends command signals to the PLC controller 3 to control the throttle opening of the electric control valve 5 and change the air flow passing through the axial flow compressor; the industrial computer controls the speed of the asynchronous motor 4 through the frequency converter 7.

[0033] Furthermore, the industrial computer is equipped with input and display devices for setting and displaying experimental parameters and experimental data.

[0034] Further, the industrial control computer and its input and display devices are placed on the operation console 11. In this embodiment, the operation console is arranged on the electrical cabinet.

[0035] Further, the asynchronous motor 4 is powered by the power distribution box 10. The power distribution box 10 converts 220V alternating current into 380V three-phase alternating current, and then outputs it to the frequency converter 7 to provide three-phase power for the asynchronous motor.

[0036] Further, the 380V three-phase alternating current output by the power distribution box 10 is filtered by the filter 9 and then output to the frequency converter 7. The filter 9 is used to suppress electromagnetic interference in the system circuit and make the rotation speed of the asynchronous motor stable at the set rotation speed.

[0037] Further, the PLC controller is powered by the DC power supply 8. The DC power supply 8 generates 24V direct current to supply power to the PLC controller, the temperature acquisition module, the pressure acquisition module, the flow rate acquisition module, and the sensor kit in the PLC controller.

[0038] Further, the PLC controller, the frequency converter 7, and the DC power supply 8 are integrated in the electrical cabinet. The electrical cabinet is also integrated with a power on / off knob, an emergency stop button, indicator lights (power indicator, phase A indicator, phase B indicator, phase C indicator, fault indicator), and connection lines.

[0039] Further, as Figure 2 shown, the axial flow compressor kit is composed of an air intake device, a casing, a lubrication device, a disk, rotor blades, stator blades, bearings, a main shaft, and a coupling; the air intake device is located at the front of the axial flow compressor and is used to draw air for the axial flow compressor; the stator blades are fixed on the inner wall of the casing and are located on the outer periphery of the disk, the rotor blades are installed on the disk, the rotor blades and the disk form the impeller of the axial flow compressor, the impeller is coaxially and fixedly connected with the main shaft, the main shaft extends out of the casing and is connected to the drive shaft of the asynchronous motor 4 through the coupling, and bearings are arranged between the main shaft and the casing; the axial flow compressor is single-stage, and the casing is designed with a volute to change the turning direction of the compressor air flow and slow down the air pressure change after the compressor during the choking test. During operation, the asynchronous motor drives the impeller to rotate, the impeller rotates to do work on the air, and the air is compressed. The air sequentially passes through the air intake device, the rotor blades, the stator blades, then enters the exhaust device 6 through the electric control valve 5, and finally is discharged from the experimental bench through the exhaust device.

[0040] Further, the sensor kit includes an inlet pressure sensor, an outlet pressure sensor, an inlet temperature sensor, an outlet temperature sensor, and an air flow meter, and their spatial deployment positions are as shown in the appendix Figure 3As shown, the inlet and outlet pressure sensors are respectively arranged at the inlet and outlet of the axial flow compressor, and are respectively used to collect the inlet and outlet pressures of the axial flow compressor; the inlet and outlet temperature sensors are respectively arranged at the inlet and outlet of the axial flow compressor, and are respectively used to collect the inlet and outlet temperatures of the axial flow compressor; the air flow meter is arranged in the connecting pipeline between the outlet of the axial flow compressor and the exhaust device, and is used to collect the air volume flow rate of the axial flow compressor in and out.

[0041] Further, the PLC controller is integrated with a temperature acquisition module, a pressure acquisition module and a flow acquisition module. After the compressor temperature, pressure and flow signals measured by the sensor kit are acquired through the temperature acquisition module, pressure acquisition module and flow acquisition module of the PLC controller, they are then transmitted by the PLC controller to the industrial control computer through the LAN data line and displayed through the display device of the industrial control computer.

[0042] In this embodiment, the asynchronous motor 4 is a three-phase asynchronous motor with an adjustable speed of 0 to 3000 revolutions per minute, is driven by three-phase alternating current of 380V, and is connected to the impeller of the axial flow compressor through a coupling, a main shaft and a bearing, and is used to drive the impeller of the axial flow compressor kit to rotate at a set speed. A speed sensor and a tone wheel are arranged between the asynchronous motor and the axial flow compressor, and are used to measure the actual speed of the engine.

[0043] In this embodiment, the electric control valve 5 is supplied with 24V direct current by the PLC controller. The industrial control computer sends a control command to the PLC controller through the LAN data line, thereby controlling the throttle opening of the electric control valve and changing the air flow rate passing through the axial flow compressor. During the working process, the throttle opening forms a 1-way 4-20mA signal, which feeds back the throttle opening to the PLC controller in real time, is transmitted to the industrial control computer, and is then displayed in real time by the software interface of the display.

[0044] In this embodiment, the exhaust device 6 is located at the rear end of the axial flow compressor kit and is used for exhausting the axial flow compressor. The air flow meter of the sensor assembly and the electric control valve 5 are respectively arranged on the air flow channels of the axial flow compressor kit 1 and the exhaust device 6.

[0045] In this embodiment, the industrial control computer is powered by 220V alternating current.

[0046] As Figure 3As shown in the figure, the signals collected by the test bench system in this embodiment include the rotational speed, pressure, temperature, and flow rate of the axial flow compressor. Among them, the rotational speed measurement point is located between the asynchronous motor and the axial flow compressor, where a rotational speed sensor and a tone wheel are provided, with a total of 1 high-speed pulse input signal to measure the actual rotational speed of the engine, and the parameters are collected through the rotational speed acquisition module. The pressure measurement points are located at the inlet and outlet of the compressor, where pressure sensors and pressure gauges are provided to generate 2 4-20 mA signals to measure the inlet pressure and outlet pressure of the compressor. The temperature measurement points are located at the inlet and outlet of the compressor, where temperature sensors and thermometers are provided to generate 2 resistance value signals to measure the inlet temperature and outlet temperature of the compressor respectively. The flow measurement point is located in the exhaust device pipeline at the outlet of the compressor, where an air flow meter is provided to generate 1 4-20 mA signal to measure the air flow rate in and out of the compressor. The output power of the asynchronous motor is directly read by the industrial control computer from the internal of the frequency converter through the RS485 communication method, and then converted.

[0047] The control signals of the test bench system include the rotational speed regulation of the asynchronous motor, the throttle opening regulation, and the throttle opening and closing control. There is 1 control signal for the rotational speed regulation of the asynchronous motor. The industrial control computer controls the output frequency of the frequency converter through RS485 communication to control the rotational speed of the asynchronous motor; there is 1 4-20 mA signal for the throttle opening regulation to control the throttle opening, and the throttle opening and closing control is controlled by the digital output terminal of the PLC.

[0048] As Figure 4 shown, further, the industrial control computer integrates a test bench control system, which is used to display and store the temperature, pressure, flow rate, rotational speed of the axial flow compressor test bench, and the throttle opening of the electric control valve, and is also used to set the throttle opening of the electric control valve, start the surge test, start and stop the asynchronous motor, and perform fault diagnosis and disposal.

[0049] As Figure 4 shown, the test bench control system of the industrial control computer mainly includes 4 functional modules: an initialization module, a test management module, a system recording module, and a data management module.

[0050] The initialization module is used for user login, self-check of the database and communication lines, device management, user management, and parameter configuration of the system hardware.

[0051] The test management module is used to monitor the data collected by the test bench system, as well as perform test parameter setting and test operation control.

[0052] The data recording module is used to record test operations, faults, and running time.

[0053] The data management module is used to manage the database, generate data reports, draw / playback the compressor characteristic curves, and query historical data.

[0054] Furthermore, the initialization module includes:

[0055] A user login unit for authenticating the user and performing login / logout operations;

[0056] A database and communication self-check unit for performing database self-check and the communication line self-check with the experimental bench system hardware;

[0057] A device management unit for managing each hardware device of the experimental bench system;

[0058] A user management unit for managing user information;

[0059] A parameter configuration unit for performing parameter configuration of the initialization experimental bench system.

[0060] Furthermore, the test management module includes:

[0061] A parameter monitoring and display unit for monitoring and displaying the data obtained during the experiment; including compressor inlet and outlet temperature data, compressor inlet and outlet pressure data, compressor air flow data, regulating valve opening information, compressor pressure ratio efficiency information, fault warning information, compressor speed data, compressor power data;

[0062] A surge test unit for starting and stopping the engine to force a surge test;

[0063] A data generation unit for generating experimental parameter data;

[0064] An upper computer control unit for controlling the motor speed, motor start / stop, and regulating valve opening.

[0065] Furthermore, the data recording module includes:

[0066] An operation log unit for recording the operation log of the experimental bench system;

[0067] A fault recording unit for recording the test process fault data of the experimental bench system;

[0068] A fault self-diagnosis unit for diagnosing the cause of the test fault;

[0069] An operation time unit for recording the compressor operation time and the experimental bench system operation time.

[0070] The working principle of this embodiment is:

[0071] During normal operation, the industrial control computer controls the voltage output frequency of the frequency converter through the test bench control system via the RS485 data cable, thereby controlling the start, stop, and rotational speed of the asynchronous motor. The industrial control computer controls the PLC controller through the test bench control system via the LAN data cable. The temperature, pressure, and flow rate acquisition modules of the PLC controller continuously acquire the inlet temperature, inlet pressure, outlet temperature, outlet pressure of the axial flow compressor, and the air flow rate through the compressor. The industrial control computer controls the PLC controller to send control commands to the electric control valve through the LAN data cable, thereby controlling the opening, closing, and opening degree of the electric control valve, and further changing the air flow rate.

[0072] Before implementing the choking test, the test bench control system inputs the set rotational speed of the compressor. After the rotational speed of the compressor stabilizes at a certain value, the choking test operation is performed. At this time, the industrial control computer controls the throttle opening of the electric control valve to gradually decrease through the PLC controller, thereby reducing the air flow rate of the compressor. When the inlet air flow rate of the compressor decreases to a certain extent, that is, when the pressure ratio of the compressor increases to the limit value, it is determined that the compressor enters the surge state. At this time, the system is triggered to generate a switching surge signal, controlling the relay to close and connecting the actuator circuit, thereby controlling the electric control valve on the exhaust device pipeline of the axial flow compressor to open quickly, achieving the purpose of quickly exhausting air to relieve surge and enabling the compressor to exit the surge state. At the same time, the control system activates the button to shut down the asynchronous motor.

[0073] The present invention can be used for teaching the working principle of the axial flow compressor of an aeroengine, can conduct performance experiments and choking experiments on the axial flow compressor, and can measure experimental parameters such as temperature, pressure, and flow rate of the axial flow compressor. It has the characteristics of simple use and strong versatility.

[0074] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An aircraft engine axial compressor test bench system, characterized in that: It includes an axial flow compressor kit, a sensor kit, a PLC controller, an asynchronous motor, an electric regulating valve, an exhaust device, and a frequency converter; the asynchronous motor driving shaft is connected to the impeller of the axial flow compressor kit; the exhaust device is located at the rear end of the axial flow compressor kit, and the electric regulating valve is arranged on the air flow channel between the axial flow compressor kit and the exhaust device; the sensor kit is used to detect the pressure, temperature and air flow signals of the axial flow compressor; the sensor kit sends the collected signals to the PLC controller, the PLC controller is connected to the industrial computer for communication, and the signals collected by the sensor kit are sent to the industrial computer; the industrial computer sends a command signal to the PLC controller to control the throttle opening of the electric regulating valve and change the air flow passing through the axial flow compressor; the industrial computer controls the speed of the asynchronous motor through the frequency converter.

2. The aircraft engine axial compressor test bench system according to claim 1, characterized in that: The PLC controller and the frequency converter are integrated in an electrical cabinet, and the electrical cabinet is also integrated with a power-off / power-on knob, an emergency stop button, an indicator light and a connecting line.

3. The aircraft engine axial compressor test bench system according to claim 1, characterized in that: The industrial computer is equipped with input and display devices, and the industrial computer and its input and display devices are placed on an operating table.

4. The aircraft engine axial compressor test bench system according to claim 1, characterized in that: The axial flow compressor kit includes an air intake device, a casing shell, a lubrication device, a blade disk, a rotor blade, a stator blade, and a main shaft; the air intake device is located at the front of the axial flow compressor and is used for ducting air to the axial flow compressor; the stator blade is fixed on the inner wall of the casing shell and is located on the outer periphery of the blade disk; the rotor blade is installed on the blade disk, and the rotor blade and the blade disk constitute the impeller of the axial flow compressor, the impeller is coaxially fixedly connected to the main shaft, the main shaft extends out of the machine brake casing and is connected to the driving shaft of the asynchronous motor through a coupling; the axial flow compressor is single-stage, and the casing shell is designed with a volute for changing the direction of the compressor airflow.

5. The aircraft engine axial compressor test bench system according to claim 1, characterized in that: The sensor kit includes an inlet pressure sensor, an outlet pressure sensor, an inlet temperature sensor, an outlet temperature sensor, and an air flow meter; the inlet and outlet pressure sensors are respectively arranged at the inlet and outlet of the axial flow compressor; the inlet and outlet temperature sensors are respectively arranged at the inlet and outlet of the axial flow compressor; the air flow meter is arranged in the connecting pipe between the outlet of the axial flow compressor and the exhaust device, and is used to collect the air volume flow rate entering and exiting the axial flow compressor.

6. The aircraft engine axial flow compressor test bench system according to claim 5, characterized in that: The PLC controller integrates a temperature acquisition module, a pressure acquisition module and a flow acquisition module; the compressor temperature, pressure and air flow signals measured by the sensor kit are respectively acquired by the temperature acquisition module, the pressure acquisition module and the flow acquisition module of the PLC controller, and then transmitted by the PLC controller to the industrial computer through the LAN data cable, and displayed on the display device of the industrial computer.

7. The aircraft engine axial compressor test bench system according to claim 1, characterized in that: The asynchronous motor is powered by a high-voltage box, which converts 220V AC power into 380V three-phase AC power, and outputs it to the frequency converter after filtering to provide three-phase power for the asynchronous motor; the PLC controller is powered by a DC power supply, which generates 24V DC power.

8. The aircraft engine axial compressor test bench system according to claim 1, characterized in that: A speed sensor and a sound wheel are arranged between the asynchronous motor and the axial compressor to measure the actual speed of the engine.

9. The aircraft engine axial compressor test bench system according to claim 1, characterized in that: The industrial computer is integrated with a test bench control system, and the test bench control system includes: Initialization module, used for user login, database and communication line self-check, device management, user management and system hardware parameter configuration; The test management module is used to monitor the data collected by the test bench system, as well as to set test parameters and control test operations; Data logging module, used to record experimental operations, faults and running time; The data management module is used to manage the database, generate data reports, draw / play back compressor characteristic curves, and query historical data.

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