Semi-physical experiment system suitable for thermal management system of hydrogen energy hybrid passenger plane

Abstract

The invention discloses a semi-physical experiment system suitable for a thermal management system of a hydrogen energy hybrid passenger plane. The semi-physical experiment system comprises an upper computer used for displaying a software interface, adjusting controller parameters, controlling the start-stop state of the semi-physical experiment system of the thermal management system and monitoring experiment process data; the switch is used for expanding an Ethernet port of the upper computer and establishing an interaction relationship between the upper computer and the server; the server is used for executing the instruction transmitted by the upper computer and outputting a control signal to the real physical experiment equipment and the simulation machine; the upper computer, the switch and the server are all connected with the real physical experiment equipment; the upper computer is connected with the server through the switch; and the server is connected with the simulation machine. Through combined use of the real physical experiment equipment and the virtual simulation experiment equipment, the experiment safety risk and cost are reduced, the experiment speed is increased, the experiment precision is improved, meanwhile, the semi-physical degree is flexibly adjusted according to experiment requirements, and experiment parameters can be monitored in real time so that the trial and error cost and the safety risk can be reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of semi-physical experiment of thermal management systems, and particularly relates to a semi-physical experiment system applicable to the thermal management system of hydrogen-powered hybrid airliners. Background Art

[0002] The hydrogen-powered hybrid airliner uses a hydrogen-powered hybrid system as the power source. The hydrogen-powered hybrid system consists of equipment such as lithium batteries, hydrogen-oxygen fuel cells, and aviation engine turbogenerator systems. When the hydrogen-powered hybrid system is working, a large amount of heat will be generated. If it is not discharged in a timely and effective manner, the temperature inside the system will rise rapidly, threatening the safety of the system. The system for converting, transmitting, discharging, managing, and controlling the heat of the system is called a thermal management system.

[0003] The thermal management system of the hydrogen-powered hybrid system is relatively complex. If physical experiments are used, firstly, the test cost is expensive. Secondly, dangerous situations such as over-temperature of the working medium and failure of component operation are likely to occur during the test. If semi-physical simulation is used to study the thermal management system of the hydrogen-powered hybrid system, on the one hand, it can reduce the test cost and the huge potential safety hazards during the test, and on the other hand, it can ensure the high-precision simulation of the dynamic characteristics of the thermal management system of the hydrogen-powered hybrid system, simulate some processes that are difficult to achieve in the simulation process, and obtain some test data that are difficult to calculate in the digital simulation process, laying a foundation for the design and research of the dynamic characteristics of the thermal management system of the hydrogen-powered hybrid system. Summary of the Invention

[0004] To solve the above technical problems, the present invention proposes a semi-physical experiment system applicable to the thermal management system of hydrogen-powered hybrid airliners to solve the problems existing in the above prior art.

[0005] To achieve the above object, the present invention provides a semi-physical experiment system applicable to the thermal management system of hydrogen-powered hybrid airliners, including: a host computer, a switch, a server, real physical experiment equipment, and a simulator;

[0006] The host computer is used to display a software interface, adjust controller parameters, control the start and stop states of the semi-physical experiment system of the thermal management system, and monitor the experimental process data;

[0007] The switch is used to expand the Ethernet port of the host computer and establish an interaction relationship between the host computer and the server;

[0008] The server is used to execute the instructions transmitted by the host computer and output control signals to the real physical experiment equipment and the simulator;

[0009] The host computer, the switch, and the server are all connected to the real physical experiment equipment;

[0010] The host computer is connected to the server through a switch; the server is connected to the simulator.

[0011] Optionally, the host computer includes a hardware part and a software part. The hardware includes a display, a host, and an input device. The host is built-in with an Ethernet and a USB interface; the software part includes a controller parameter adjustment module and a total control module;

[0012] The controller parameter adjustment module is used to adjust various parameters of the controller and change the output control signal of the controller;

[0013] The total control module is used to control the start and stop state of the hardware-in-the-loop experiment system of the thermal management system and monitor the data during the experiment process.

[0014] Optionally, the switch is connected to the host computer through an Ethernet-Ethernet cable. The switch is used to expand the Ethernet interface of the host computer and establish a data transmission channel between the host computer and the server.

[0015] Optionally, the server is connected to the switch through an Ethernet-Ethernet cable. The server is used to execute the instructions of the host computer transmitted through the switch, output control signals to the real physical experimental equipment and the simulator, and transmit the feedback data to the total control module of the host computer through the switch.

[0016] Optionally, the real physical experimental equipment includes a controller and an expansion device.

[0017] Optionally, the controller is connected to the server through an Ethernet-CAN cable, the host computer is connected to the controller through a USB-RB232 cable, and the host computer adjusts various parameters of the controller through the controller parameter adjustment module; the switch is connected to the controller through an Ethernet-Ethernet cable.

[0018] Optionally, the controller is used to receive the instructions of the server, import the control algorithm of the virtual simulation model of the thermal management system into the built-in board of the controller, and run the control algorithm of the virtual simulation model of the thermal management system during the hardware-in-the-loop experiment process, output a control signal, and transmit the control signal to the simulator through the server.

[0019] Optionally, the server is connected to the simulator through an Ethernet-Ethernet cable; the simulator is used to receive the instructions of the server, import the virtual simulation model of the thermal management system into the virtual simulation platform built in the simulator, and run the virtual simulation model during the hardware-in-the-loop experiment process to conduct virtual simulation experiments in the hardware-in-the-loop experiment.

[0020] Optionally, the expansion device includes but is not limited to sensors, heat exchangers, pumps, valves, lithium batteries, hydrogen oxygen fuel cells, and aviation engine turbogenerator systems, and is used for the physical part in the hardware-in-the-loop experiment.

[0021] Compared with the prior art, the present invention has the following advantages and technical effects:

[0022] The present invention incorporates the characteristics or performances of physical objects or real physical experimental conditions that are not available into the simulation model of the thermal management system in the form of a mathematical model, runs the simulation in the simulator, and simulates the physical objects or real physical experimental conditions that are not available. Compared with full physical experiments, the semi-physical experimental system described in the present invention can reduce the experimental safety risk, reduce the experimental cost, speed up the experimental speed, and obtain experimental data under dangerous conditions. Compared with full simulation experiments, the semi-physical experimental system described in the present invention can improve the experimental accuracy and verify the key equipment data.

[0023] By changing the number of simulation models in the simulator and the number of extended devices, the present invention can flexibly adjust the semi-physical degree of the semi-physical experimental system of the thermal management system described in the present invention to meet the experimental requirements. Compared with the semi-physical experimental system with an unadjustable semi-physical degree, the semi-physical experimental system described in the present invention can flexibly adjust the semi-physical degree according to the experimental requirements to better achieve the experimental purpose.

[0024] Through the monitoring of the upper computer and the data transmission between the switch and the server, the present invention can view the parameters of each experimental device in real time, so as to immediately pause or stop the experiment when detecting abnormalities or risks, reducing the experimental trial-and-error cost or reducing the experimental safety risk. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings constituting a part of this application are used to provide a further understanding of this application. The schematic embodiments of this application and their descriptions are used to explain this application and do not constitute an improper limitation to this application. In the drawings:

[0026] Figure 1 It is a schematic diagram of the semi-physical experimental system of the hydrogen energy hybrid system thermal management system according to the embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The following will refer to the drawings and combine the embodiments to detail this application.

[0028] It should be noted that the steps shown in the flowchart of the drawings can be executed in a computer system such as a set of computer executable instructions, and although the logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in a different order than here.

[0029] Embodiment 1

[0030] Hardware-in-the-loop experiment is an experimental technique that combines digital simulation and physical experiment. During the experiment, there are both physically real objects and virtual digital simulation models. The physical objects and the simulation models are interconnected to form a closed-loop system, that is, some physical objects (such as sensors, controllers, etc.) of the system to be studied are connected to the simulation loop for testing. Through hardware-in-the-loop experiment, the parts that are difficult to build mathematical models in the computer can be conveniently replaced by physical objects. On the one hand, it avoids complex mathematical modeling work; on the other hand, it is closer to the real physical environment than pure mathematical modeling, and the simulation results are more reliable and accurate.

[0031] As Figure 1 shown, in this embodiment, a hardware-in-the-loop experimental system applicable to the thermal management system of a hydrogen-powered hybrid airliner is provided, including:

[0032] The hardware-in-the-loop experimental system of the thermal management system of the hydrogen-powered hybrid system described in the present invention includes: a host computer, a switch, a server, a controller, a simulator, an expansion device, and a cable.

[0033] The host computer is a computer with a Windows system as the operating system, including a hardware part and a software part. The hardware part includes a display, a host computer with a motherboard, an Ethernet port, a USB interface, a mouse, etc.; the software part includes controller parameter adjustment software, a total control software, etc. The function of the display is to display the software interface for the experimental personnel to master the operation of the system. The function of the host computer with a motherboard, an Ethernet port, and a USB interface is to provide the necessary conditions for the computer to run and connect to other hardware. The function of the mouse is to allow the experimental personnel to operate the computer. The function of the controller parameter adjustment module is to adjust the parameters of the controller to change the output control signal of the controller. The function of the total control module is to control the start and stop state of the hardware-in-the-loop experimental system of the thermal management system and monitor various data during the experiment.

[0034] The host computer is connected to the switch through an Ethernet-Ethernet cable. The function of the switch is to expand the Ethernet port of the host computer and establish an interaction relationship between the host computer and the server.

[0035] The switch is connected to the server through an Ethernet-Ethernet cable. The function of the server is to execute various instructions of the host computer transmitted by the switch, output control signals to the controller, simulator, expansion device, etc., and transmit the data feedback from the controller, simulator, expansion device, etc. to the host computer total control module through the switch.

[0036] The server is connected to the controller via an Ethernet - CAN cable. The host computer is connected to the controller via a USB - RB232 cable. The host computer can, before the start of the hardware - in - the - loop experiment, adjust various parameters of the controller through the controller parameter adjustment module. The switch is connected to the controller via an Ethernet - Ethernet cable. The function of the controller is to receive instructions from the server, import the control algorithm of the thermal management system virtual simulation model into the board built into the controller, and run the control algorithm of the thermal management system virtual simulation model during the hardware - in - the - loop experiment, output control signals, and transmit them to the simulator via the server to conduct the real - physical experiment part in the hardware - in - the - loop experiment.

[0037] The server is connected to the simulator via an Ethernet - Ethernet cable. The function of the simulator is to receive instructions from the server, import the thermal management system virtual simulation model into the virtual simulation platform built into the simulator, and run the virtual simulation model during the hardware - in - the - loop experiment to conduct the virtual simulation experiment part in the hardware - in - the - loop experiment.

[0038] The server is connected to the expansion device via an Ethernet - CAN cable. The switch is connected to the expansion device via an Ethernet - Ethernet cable. The expansion device refers to real - physical experiment devices other than the controller, not a specific device. It can be sensors, heat exchangers, pumps, valves, lithium batteries, proton - exchange membrane fuel cells, aero - engine turbogenerator systems, etc. The function of the expansion device is to connect real - physical experiment devices other than the controller to the hardware - in - the - loop experiment system of the thermal management system, start them during the hardware - in - the - loop experiment, and conduct the real - physical experiment part in the hardware - in - the - loop experiment. In this example, the expansion device is a temperature sensor, whose function is to collect air temperature, connect to the hardware - in - the - loop experiment system of the thermal management system, start during the hardware - in - the - loop experiment, and conduct the real - physical experiment part in the hardware - in - the - loop experiment.

[0039] Before the experiment starts, the experimenter confirms in the overall control module of the host computer that the experimental purpose and experimental conditions are clear, the connection of the hardware - in - the - loop experiment system meets the design requirements, the thermal management system simulation models in the simulator are complete and reliable, the control algorithm of the thermal management system simulation model in the controller has been imported, and makes all preparations before the experiment.

[0040] When the experiment starts, the experimenter starts the hardware - in - the - loop experiment through the overall control module of the host computer.

[0041] The following is the process within one experimental step. First, the host computer transmits the start instruction to the server via the switch. According to the requirements of the hardware-in-the-loop experiment, the server reads the control algorithm of the thermal management system in the controller and transmits the control signal to the simulator and the temperature sensor. Then, the temperature sensor measures the air temperature and feeds it back to the server. The server transmits the air temperature to the simulator and the switch. The switch transmits the air temperature to the host computer. At the same time, the simulator starts to run the simulation based on the control signal and the air temperature transmitted by the server, and obtains parameters such as the temperature of each device, the flow rate of the cooling medium, and the pressure of the cooling medium in the simulation model of the thermal management system of the hydrogen energy hybrid system, and feeds them back to the server. Then, the server transmits the parameters fed back by the simulator to the host computer via the switch. The host computer displays the parameters in real time in the total control module. One experimental step ends.

[0042] In the next experimental step, the above process is automatically repeated until the experimental profile ends or the experimenter detects an abnormality or danger, then the hardware-in-the-loop experiment is paused or stopped. After eliminating the abnormality or danger, the experiment continues or restarts.

[0043] Thus, the hardware-in-the-loop experimental system of the thermal management system of the hydrogen energy hybrid system realizes the function of docking with real sensors and controllers, and conducts real-time, closed-loop, hardware-in-the-loop (HIL) simulation.

[0044] By combining the use of real physical experimental equipment and virtual simulation experimental equipment, the performance experiment of the thermal management system can be carried out without some physical objects or real physical experimental conditions of the thermal management system of the hydrogen energy hybrid system. Specifically: the characteristics or performances of the physical objects or real physical experimental conditions that are not available are incorporated into the simulation model of the thermal management system in the form of a mathematical model, and the simulation is run in the simulator to simulate the physical objects or real physical experimental conditions that are not available. Compared with the full physical experiment, the hardware-in-the-loop experimental system described in the present invention can reduce the experimental safety risk, reduce the experimental cost, speed up the experimental speed, and obtain experimental data under dangerous conditions. Compared with the full simulation experiment, the hardware-in-the-loop experimental system described in the present invention can improve the experimental accuracy and verify the data of key equipment.

[0045] By changing the number of simulation models in the simulator and the number of expansion devices, the semi-physical degree of the semi-physical experimental system of the hydrogen energy hybrid system thermal management system described in the present invention can be flexibly adjusted to meet the experimental requirements. Specifically: on the one hand, all the expansion devices can be disconnected, and the semi-physical experimental system can be formed with only the controller as the real physical experimental device. On the other hand, all the simulation models in the simulator can be removed and all the models can be replaced with physical objects, and the connection between the simulator and the server can be removed, thus forming a full-physical experimental system without virtual simulation experimental devices. Compared with the semi-physical experimental system with an unadjustable semi-physical degree, the semi-physical experimental system described in the present invention can flexibly adjust the semi-physical degree according to the experimental requirements to better achieve the experimental purpose.

[0046] Through the monitoring of the upper computer and the data transmission between the switch and the server, the parameters of each experimental device of the semi-physical experimental system of the hydrogen energy hybrid system thermal management system can be viewed in real time, so that the experiment can be paused or stopped immediately when abnormalities or risks are detected, reducing the experimental trial-and-error cost or reducing the experimental safety risk.

[0047] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed in the present application should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A semi-physical experimental system applicable to the thermal management system of a hydrogen-powered hybrid airliner, characterized in that, Including: Host computer, switch, server, real physical experimental equipment, simulator; The host computer is used to display the software interface, adjust the controller parameters, control the start and stop states of the hardware-in-the-loop experiment system of the thermal management system, and monitor the experimental process data; The switch is used to expand the Ethernet port of the host computer and establish an interaction relationship between the host computer and the server; The server is used to execute the instructions transmitted by the host computer and output control signals to the real physical experimental equipment and the simulator; The host computer, switch, and server are all connected to the real physical experimental equipment; The host computer is connected to the server through the switch; the server is connected to the simulator.

2. The hardware-in-the-loop experiment system applicable to the thermal management system of a hydrogen-powered hybrid airliner according to claim 1, characterized in that The host computer includes a hardware part and a software part. The hardware includes a display, a host, and an input device. The host is built-in with an Ethernet and a USB interface; the software part includes a controller parameter adjustment module and a total control module; The controller parameter adjustment module is used to adjust the parameters of the controller and change the output control signal of the controller; The total control module is used to control the start and stop states of the hardware-in-the-loop experiment system of the thermal management system and monitor the data during the experiment process.

3. The hardware-in-the-loop experiment system applicable to the thermal management system of a hydrogen-powered hybrid airliner according to claim 2, characterized in that The switch is connected to the host computer through an Ethernet-Ethernet cable. The switch is used to expand the Ethernet interface of the host computer and establish a data transmission channel between the host computer and the server.

4. The hardware-in-the-loop experiment system applicable to the thermal management system of a hydrogen-powered hybrid airliner according to claim 3, characterized in that The server is connected to the switch through an Ethernet-Ethernet cable. The server is used to execute the instructions of the host computer transmitted through the switch, output control signals to the real physical experimental equipment and the simulator, and transmit the feedback data to the total control module of the host computer through the switch.

5. The hardware-in-the-loop experiment system applicable to the thermal management system of a hydrogen-powered hybrid airliner according to claim 4, characterized in that The real physical experimental equipment includes a controller and an expansion device.

6. The hardware-in-the-loop experiment system applicable to the thermal management system of a hydrogen-powered hybrid airliner according to claim 5, characterized in that The controller is connected to the server through an Ethernet-CAN cable, the host computer is connected to the controller through a USB-RB232 cable, and the host computer adjusts the parameters of the controller through the controller parameter adjustment module; the switch is connected to the controller through an Ethernet-Ethernet cable.

7. The hardware-in-the-loop experiment system applicable to the thermal management system of a hydrogen-powered hybrid airliner according to claim 6, characterized in that The controller is used to receive the instructions of the server, import the control algorithm of the virtual simulation model of the thermal management system into the built-in board of the controller, and run the control algorithm of the virtual simulation model of the thermal management system during the hardware-in-the-loop experiment, output a control signal, and transmit the control signal to the simulator through the server.

8. The hardware-in-the-loop experiment system applicable to the thermal management system of a hydrogen-powered hybrid airliner according to claim 7, characterized in that The server is connected to the simulator through an Ethernet-Ethernet cable; the simulator is used to receive instructions from the server, import the virtual simulation model of the thermal management system into the virtual simulation platform built in the simulator, and run the virtual simulation model during the hardware-in-the-loop experiment to conduct virtual simulation experiments in the hardware-in-the-loop experiment.

9. The hardware-in-the-loop experimental system applicable to the thermal management system of a hydrogen-powered hybrid airliner according to claim 5, wherein The expansion device includes but is not limited to sensors, heat exchangers, pumps, valves, lithium batteries, hydrogen-oxygen fuel cells, and aviation engine turbogenerator systems, and is used for the physical part in the hardware-in-the-loop experiment.

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