Semi-physical simulation test system for hydrogen fuel turbine engine control system

Abstract

The application relates to the technical field of simulation design, and discloses a semi-physical simulation test system for a hydrogen fuel turbine engine control system, which comprises the following steps: after an electronic controller receives a starting signal, the electronic controller controls a simulation system to start and collect simulation signals; the simulation system runs a hydrogen fuel turbine engine model to perform simulation, and provides simulated engine sensor signals and actuator signals for the electronic controller; a gas supply system provides compressed air; when the rotating speed of the hydrogen fuel turbine engine reaches a preset rotating speed, the electronic controller controls an adjusting valve to open to perform flow regulation; the electronic controller determines the current engine state according to the simulation signals, and controls corresponding actuators to perform starting, slow-speed running, acceleration and deceleration, steady rotating speed control and parking control according to a control law; compressed air is used as a test working medium to replace hydrogen, test cost is reduced, the semi-physical simulation of the control system is performed in a relatively safe condition, and the performance and functions of the control system are verified.

Description

Technical Field

[0001] This invention relates to the field of simulation technology, and more specifically to a semi-physical simulation test system for a hydrogen fuel turbine engine control system. Background Technology

[0002] Compared to traditional internal combustion engines, hydrogen fuel cell engines involve fundamental changes in their control system metering mechanisms. Given that the existing control logic and hardware structure of internal combustion engines are incompatible with the supply characteristics of hydrogen fuel, it is necessary to conduct semi-physical simulation experiments of the control system. However, considering the flammable and explosive nature of hydrogen, using real hydrogen fuel as the test medium not only places high demands on the explosion-proof requirements of the testing facility and poses significant safety risks, but also results in high subsequent testing costs. Therefore, how to adapt to the testing requirements of hydrogen fuel cell engine control systems and conduct semi-physical simulations has become an urgent problem to be solved. Summary of the Invention

[0003] This invention provides a semi-physical simulation test system for hydrogen fuel turbine engine control systems to address the problem of how to adapt to the test requirements of hydrogen fuel engine control systems and perform semi-physical simulation.

[0004] In a first aspect, the present invention provides a semi-physical simulation test system for a hydrogen fuel cell turbine engine control system. The system includes an electronic controller, a gas supply system, a simulation system, and a control console. The gas supply system includes a flow regulating valve. The control console sends electrical signals to the electronic controller, including start signals, stop signals, and power lever angles; After receiving the start signal, the electronic controller controls the simulation system to start and collects simulation signals, including speed signals and temperature signals. The simulation system is used to run a hydrogen fuel turbine engine model for simulation and to provide simulated engine sensor signals and actuator signals to the electronic controller; The air supply system is used to provide compressed air; When the hydrogen fuel turbine engine in the simulation system reaches the preset speed, the electronic controller controls the flow regulating valve to open and regulate the flow. The flow rate collected by the flow meter is fed back to the hydrogen fuel turbine engine. The electronic controller receives the simulation results output by the simulation system. The electronic controller determines the current engine state based on the simulation signal and controls the corresponding actuators to start, slow down, accelerate / decelerate, control steady-state speed, and stop according to the control law.

[0005] This invention uses a control console as the initiator of test commands. After receiving the start signal, the electronic controller controls the simulation system to run a hydrogen fuel turbine engine model for simulation, replicating the real operating characteristics of the hydrogen fuel engine. This solves the technical pain point that traditional fuel engine simulation models cannot adapt to the characteristics of hydrogen fuel. Compressed air is provided by the gas supply system to replace hydrogen as the test working medium, fundamentally eliminating the high risk of hydrogen's flammability and explosion, reducing test costs. The electronic controller controls the simulation system to start, collects simulation signals, and performs full-condition control of the engine, thereby achieving semi-physical simulation of the control system under relatively safe conditions and verifying the performance and function of the control system.

[0006] In one alternative implementation, the simulation system is used to solve the mathematical models of the engine, actuators, and sensors, and to establish a mathematical model of the hydrogen fuel turbine engine based on the characteristics of hydrogen fuel.

[0007] This invention uses a simulation system to solve three core mathematical models: engine, actuator, and sensor. It fully reproduces the entire operational logic of a hydrogen fuel cell turbine engine. The engine mathematical model provides core power condition data, the actuator mathematical model simulates the action response of each component, and the sensor mathematical model converts the operational data into analog signals, thus achieving the matching of the test scenario and the real engine control scenario.

[0008] In one alternative implementation, the simulation system is also used to generate simulated engine sensor signals and actuator signals, and to provide the generated simulated signals to the electronic controller.

[0009] This invention generates simulated engine sensor signals and actuator signals through a simulation system to recreate the signal interaction scenario of a real hydrogen fuel cell engine control system, thereby enhancing the reliability of the test data.

[0010] In one optional implementation, the gas supply system includes a gas source and a flow meter, wherein, The gas supply source is used to provide compressed air, which is used as the test working medium in place of hydrogen at an equal volume flow rate. Flow meters are used to monitor flow rate and feed the flow monitoring data back to the simulation system; The flow regulating valve is used to adjust the flow rate by receiving control commands from the electronic controller.

[0011] This invention uses compressed air instead of hydrogen fuel as the test working medium by supplying gas source, and adopts an equivalent simulation method with equal volume flow rate to ensure test safety and reduce test costs. The flow rate is collected by a flow meter to provide data for subsequent flow calibration and to monitor the flow rate. The flow regulating valve adjusts the flow rate according to control commands to achieve precise supply of equivalent hydrogen fuel flow rate and ensure that the test conditions are consistent with the actual operating conditions.

[0012] In one alternative implementation, when the engine speed is detected to reach a preset speed, the electronic controller controls the flow regulating valve to open.

[0013] This invention combines the actual start-up and operation conditions of a hydrogen fuel turbine engine, sets the engine speed to a preset speed as a key node, and determines the control timing of the flow regulating valve to reproduce the fuel supply sequence of the hydrogen fuel turbine engine.

[0014] In one optional embodiment, the air supply system further includes a pressure reducing valve, which is disposed between the air supply source and the flow regulating valve. The pressure reducing valve is used to regulate the pressure of the compressed air output from the air source to the test pressure setting range.

[0015] This invention regulates the pressure of compressed air by setting a pressure reducing valve, adjusting the pressure to the test pressure setting range, providing a constant pressure base, avoiding flow regulation deviations caused by pressure fluctuations, and ensuring accurate supply of equivalent hydrogen fuel flow.

[0016] Secondly, the present invention provides a semi-physical simulation test method for a hydrogen fuel turbine engine control system, applied to an electronic controller in a semi-physical simulation test system for a hydrogen fuel turbine engine control system according to the first aspect above or any corresponding embodiment thereof, the method comprising: The system receives a start signal from the console, controls the simulation system to start, and collects simulation signals, including speed signals and temperature signals. When the hydrogen fuel turbine engine in the simulation system reaches the preset speed, the flow regulating valve is opened to regulate the flow and the flow collected by the flow meter is fed back to the hydrogen fuel turbine engine. The current engine state is determined based on the simulation signal, and the corresponding actuators are controlled according to the control law to perform start-up, idling, acceleration / deceleration, steady-state speed control, and shutdown control.

[0017] This invention controls the simulation system to start up via an electronic controller, receives simulation results, and performs full-condition control of the engine. This enables semi-physical simulation of the control system under relatively safe conditions, and verifies the performance and function of the control system. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of a semi-physical simulation test system for a control system according to an embodiment of the present invention; Figure 2 This is a schematic flowchart of a semi-physical simulation test method for a hydrogen fuel turbine engine control system according to an embodiment of the present invention. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] It is understood that before using the technical solutions disclosed in the various embodiments of the present invention, users should be informed of the types, scope of use, and usage scenarios of the personal information involved in the present invention and their authorization should be obtained in accordance with relevant laws and regulations through appropriate means.

[0022] In addition, some related technologies employ full-authority electronic control, which uses an electronic controller to collect signals such as engine status and speed, and outputs switching signals and duty cycle signals to drive the actuator to complete the corresponding switching control and metering valve displacement control, thereby achieving hydrogen flow regulation.

[0023] However, hydrogen has high explosion-proof requirements, so compressed air is used instead of hydrogen. Under conditions of 5 MPa and 15℃, the densities of hydrogen and air are taken as 4.211 kg / m³. 3 60.5 kg / m 3 Therefore, the mass flow rate ratio for the same volumetric flow rate is 1:14.33, requiring a relatively large air flow rate for the simulation test. During engine operation, hydrogen has high compressibility and its density fluctuates significantly. Since air and hydrogen have different properties, the flow parameters need to be converted to air flow rate during the semi-physical simulation test of the control system, and the flow and other related parameters in the control software need to be modified.

[0024] This invention provides a semi-physical testing system for a hydrogen fuel turbine engine control system. It uses compressed air instead of hydrogen to conduct semi-physical simulation tests on the hydrogen fuel engine control system, performing semi-physical simulations of the control system under relatively safe conditions to verify the performance and functions of the control system.

[0025] This embodiment provides a semi-physical testing system for a hydrogen fuel turbine engine control system, such as... Figure 1As shown, the system includes an electronic controller, a gas supply system, a simulation system, a control console, and an electrical system.

[0026] The console sends electrical signals such as start signal, stop signal and power lever angle signal to the electronic controller. After receiving the start signal, the electronic controller immediately issues a command to control the simulation system to start and collect simulation signals such as speed and temperature.

[0027] After the simulation system is started, it runs the hydrogen fuel turbine engine model in real time to perform the simulation, and the simulation results are fed back to the electronic controller.

[0028] The gas supply system provides compressed air, replacing hydrogen fuel as the working medium for the experiment.

[0029] The gas supply system includes a flow regulating valve. When the hydrogen fuel turbine engine in the simulation system reaches a certain speed, the electronic controller controls the flow regulating valve to open and regulates the flow according to the preset control law. The flow rate is collected by a flow meter and fed back to the hydrogen fuel turbine engine to simulate the process of supplying hydrogen fuel to the engine combustion chamber.

[0030] As the core component, the electronic controller collects simulation signals such as engine speed and temperature to sequentially complete the closed-loop control of the entire process of engine starting, idling, acceleration and deceleration, steady-state speed control, and stopping.

[0031] The semi-physical simulation test system for a hydrogen fuel turbine engine control system provided in this embodiment uses a console as the initiator of test commands. After receiving the start signal, the electronic controller controls the simulation system to run a hydrogen fuel turbine engine model for simulation, replicating the real operating characteristics of the hydrogen fuel engine. This solves the technical pain point that traditional fuel engine simulation models cannot adapt to the characteristics of hydrogen fuel. Compressed air is provided by the gas supply system to replace hydrogen as the test working medium, fundamentally eliminating the high risk of hydrogen's flammability and explosion, reducing test costs. The electronic controller controls the start of the simulation system, collects simulation signals, and performs full-condition control of the engine, thereby realizing semi-physical simulation of the control system under relatively safe conditions and verifying the performance and function of the control system.

[0032] In some optional implementations, the simulation system is used to solve the mathematical models of the engine, actuators, and sensors, to realize functions such as the simulation of actuator and sensor signals, and to establish a mathematical model of the hydrogen fuel turbine engine based on the characteristics of hydrogen fuel.

[0033] The engine mathematical model, as the core model of the simulation system, is established based on the characteristics of hydrogen fuel. Compared with the traditional fuel engine model, this engine mathematical model is adapted to the combustion and gas supply characteristics of hydrogen fuel, accurately simulating the full operating conditions of the hydrogen fuel turbine engine from start-up, idle, acceleration and deceleration to steady-state operation and shutdown, and outputting the core operating parameters under the corresponding operating conditions.

[0034] The actuator mathematical model is used to simulate the action logic and response characteristics of the actuators related to engine fuel supply and speed regulation. It transforms the operating requirements of the engine model into action commands for the actuators, thereby realizing closed-loop simulation of the control link.

[0035] The sensor mathematical model is used to simulate the signal generation logic of various sensors based on the real-time operating data of the engine mathematical model and the actuator mathematical model. It outputs simulated sensor signals such as engine speed and temperature that are consistent with the actual operating conditions, providing input data for the electronic controller that meets the actual control requirements.

[0036] Targeting the characteristics of hydrogen fuel, including its low density, high compressibility, wide flammability limit, and fast combustion rate, and considering the gas path structure and control logic of a hydrogen fuel cell turbine engine, the model ensures accurate reproduction of the actual operating state of a real hydrogen fuel cell engine. Based on the engine's mathematical model, a simulation platform for the hydrogen fuel cell engine control system is established. Steady-state and dynamic control digital simulation studies of the hydrogen fuel cell engine are conducted, and a semi-physical simulation design for the hydrogen fuel cell turbine engine control system is completed.

[0037] The simulation system solves the mathematical models of the engine, actuators, and sensors, realizing functions such as simulating actuator and sensor signals, and providing simulated engine sensor signals and actuator signals to the electronic controller.

[0038] By solving three core mathematical models—engine, actuator, and sensor—the simulation system fully reproduces the entire operational logic of a hydrogen fuel cell turbine engine. The engine mathematical model provides core power condition data, the actuator mathematical model simulates the action response of each component, and the sensor mathematical model converts the operational data into analog signals, thus achieving the matching between the test scenario and the real engine control scenario.

[0039] In some optional implementations, the simulation system runs a mathematical model of a hydrogen fuel cell turbine engine to accurately simulate the engine's core operating states under different conditions such as starting, idling, acceleration, and deceleration, and outputs corresponding operating parameters. It also links the mathematical models of the actuators and sensors to generate simulated engine sensor signals and actuator signals, and feeds these simulated signals back to the electronic controller.

[0040] The simulation system generates simulated engine sensor signals and actuator signals to recreate the signal interaction scenario of a real hydrogen fuel cell engine control system, thereby enhancing the credibility of the test data.

[0041] In some alternative implementations, the gas supply system includes a gas source, a flow regulating valve, a flow meter, and a pressure reducing valve.

[0042] The gas supply source provides compressed air, which is used to replace hydrogen with an equal volume flow rate as the test working medium. The flow rate is converted before the test is conducted, thereby avoiding the safety risks of hydrogen's flammability and explosion, improving safety, and reducing the requirements for the explosion-proof level of the plant and the overall test cost.

[0043] The flow meter is used to monitor flow rate and feeds the collected flow monitoring data back to the simulation system. This allows the simulation system to use the data to correct the operating parameters of the engine mathematical model, making the output simulation results more consistent with real operating conditions.

[0044] As a core component of flow control, the flow regulating valve receives control commands from the electronic controller and operates according to the control laws provided by the electronic controller. As a crucial link connecting the electronic controller commands and the output of the test working fluid flow, the accuracy of the flow regulating valve directly determines the realism and accuracy of the fuel supply process in the semi-physical simulation test of the hydrogen fuel turbine engine control system.

[0045] By using compressed air instead of hydrogen fuel as the test working medium and employing an equivalent simulation method with equal volumetric flow rate, test safety is ensured and test costs are reduced. Flow rate is collected by a flow meter to provide data for subsequent flow calibration and to monitor the flow rate. The flow regulating valve adjusts the flow rate according to control commands to achieve precise supply of equivalent hydrogen fuel flow and ensure that the test conditions are consistent with the actual operating conditions.

[0046] In some optional implementations, the gas supply system also includes a pressure reducing valve, which is located between the gas source and the flow regulating valve. Its core function is to precisely regulate the pressure of the compressed air output from the gas source and stabilize it within the pressure setting range required for the test, thereby ensuring the stability and controllability of the test working fluid supply.

[0047] After receiving the start signal from the console, the electronic controller starts the simulation system. The high-pressure air from the fuel tank is stabilized to the required pressure setting range by the pressure reducing valve. After the engine reaches a certain speed, the flow regulating valve opens. The flow regulating valve operates according to the control law given by the electronic controller, thereby regulating the flow of hydrogen to the engine and verifying the function of the control system.

[0048] The electronic controller collects engine speed and temperature signals to control the engine throughout the entire process, including starting, idling, acceleration / deceleration, steady-state speed control, and stopping. This achieves closed-loop linkage between the electronic controller and the simulation system, which not only comprehensively verifies the effectiveness of the electronic controller's control logic, response timeliness, and parameter adaptability under various typical operating conditions of hydrogen fuel cell engines, but also provides crucial data support for subsequent iterative optimization of the controller and real-world engine testing.

[0049] By setting a pressure reducing valve to regulate the pressure of compressed air, the pressure is adjusted to the test pressure setting range, providing a constant pressure base, avoiding flow regulation deviations caused by pressure fluctuations, and ensuring the accurate supply of equivalent hydrogen fuel flow.

[0050] In some alternative implementations, the electrical system serves as a fundamental component ensuring the stable operation of the entire test apparatus. It has power supply and distribution functions as well as equipment control functions, providing a stable power supply to the simulation system, electronic controller, gas supply system, and control console, ensuring uninterrupted power supply to each component during the test, and providing a power foundation for the simulation test.

[0051] According to an embodiment of the present invention, a semi-physical testing method for a hydrogen fuel turbine engine control system is provided. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0052] This embodiment provides a semi-physical simulation test method for a hydrogen fuel turbine engine control system, which can be used for electronic controllers. Figure 2 This is a flowchart of a semi-physical simulation test method for a hydrogen fuel turbine engine control system according to an embodiment of the present invention, such as... Figure 2 As shown, the process includes the following steps: Step S201: Receive the start signal sent by the console, control the simulation system to start, and collect simulation signals.

[0053] In this embodiment of the invention, mathematical models of the engine, actuators, and sensors are established. A mathematical model of a hydrogen fuel turbine engine is established based on the characteristics of hydrogen fuel, completing the test preparation. The control console sends start-up signals, stop signals, and power lever angles to the electronic controller. Upon receiving the start-up signal from the control console, the electronic controller sends a start-up command to the simulation system, controlling the simulation system to start and collecting control signals such as speed and temperature.

[0054] Step S202: When the speed of the hydrogen fuel turbine engine in the simulation system reaches the preset speed, the flow regulating valve is opened to regulate the flow and the flow collected by the flow meter is fed back to the hydrogen fuel turbine engine.

[0055] In this embodiment of the invention, driven by the start command of the electronic controller, the speed of the hydrogen fuel turbine engine increases. Once the speed of the hydrogen fuel turbine engine reaches the preset speed, the flow rate is adjusted. The electronic controller sends a flow rate adjustment command to the flow rate regulating valve, which adjusts the flow rate according to the control law given by the electronic controller to precisely control the supply flow rate of compressed air. The flow rate collected by the flow meter is fed back to the hydrogen fuel turbine engine to complete the simulated supply of hydrogen fuel equivalent flow rate.

[0056] Understandably, this preset speed is calibrated based on the actual starting conditions of a hydrogen fuel turbine engine to ensure that the timing of flow supply is consistent with the fuel supply logic of a real engine.

[0057] Step S203: Determine the current engine state based on the simulation signal, and simultaneously control the corresponding actuators to perform start-up, idling, acceleration / deceleration, steady-state speed control, and shutdown control according to the control law.

[0058] In this embodiment of the invention, the simulation system solves the mathematical models of the engine, actuators, and sensors, converting core parameters such as engine speed, combustion chamber temperature, and gas pressure into analog sensor signals, which are then fed back to the electronic controller. Based on the simulation signals, the electronic controller completes the entire process control according to a preset hydrogen fuel cell engine control strategy.

[0059] Start-up control: Upon receiving the start signal from the console, the engine model of the drive simulation system enters the start-up process, and coordinates the air supply system to enter the standby state. Idle speed control: When the engine speed reaches the idle speed threshold, the electronic controller adjusts the opening of the flow regulating valve to maintain a stable flow supply. Acceleration and deceleration control: Acceleration and deceleration commands are issued according to test requirements, and the flow supply parameters are adjusted synchronously. The control commands are corrected in real time based on the speed changes in the simulation feedback to ensure that the speed rises and falls smoothly according to the target rate. Steady-state speed control: Within the target speed range, the electronic controller continuously monitors the speed data and stabilizes the speed within the set range by fine-tuning the opening of the flow regulating valve; Parking control: Upon receiving a parking command, the flow supply is gradually reduced. Once the engine model speed drops to a safe threshold, the flow regulating valve is closed, the engine model operation of the simulation system is terminated, and the parking process is completed.

[0060] The semi-physical simulation test method for the control system of a hydrogen fuel turbine engine provided in this embodiment controls the start-up of the simulation system through an electronic controller, receives the simulation results, and performs full-condition control of the engine. This enables semi-physical simulation of the control system under relatively safe conditions, and verifies the performance and function of the control system.

Claims

1. A semi-physical simulation test system for a hydrogen fuel turbine engine control system, characterized in that, The system includes an electronic controller, a gas supply system, a simulation system, and a control console. The gas supply system includes a flow regulating valve. The console sends electrical signals to the electronic controller, the electrical signals including a start signal, a stop signal, and a power lever angle; After receiving the start signal, the electronic controller controls the simulation system to start and collects simulation signals, including speed signals and temperature signals. The simulation system is used to run a hydrogen fuel turbine engine model for simulation and to provide simulated engine sensor signals and actuator signals to the electronic controller. The air supply system is used to provide compressed air; When the hydrogen fuel turbine engine in the simulation system reaches the preset speed, the electronic controller controls the flow regulating valve to open and regulate the flow, feeding back the flow collected by the flow meter to the hydrogen fuel turbine engine. The electronic controller is used to determine the current engine state based on the simulation signal, and at the same time, according to the control law, it controls the corresponding actuators to start, slow down, accelerate and decelerate, control steady-state speed, and control shutdown.

2. The system according to claim 1, characterized in that, The simulation system is used to solve the mathematical models of the engine, actuators, and sensors, and to establish a mathematical model of the hydrogen fuel turbine engine based on the characteristics of hydrogen fuel.

3. The system according to claim 2, characterized in that, The simulation system is also used to generate simulated engine sensor signals and actuator signals, and to provide the generated simulated signals to the electronic controller.

4. The system according to claim 1, characterized in that, The gas supply system includes a gas source and a flow meter, wherein, The gas supply source is used to provide compressed air, which is used as the test working medium in place of hydrogen with an equal volume flow rate. The flow meter is used to monitor flow rate and feed the flow monitoring data back to the simulation system. The flow regulating valve is used to receive control commands from the electronic controller to regulate the flow rate and supply hydrogen to the engine.

5. The system according to claim 4, characterized in that, When the engine speed is detected to reach the preset speed, the electronic controller controls the flow regulating valve to open.

6. The system according to claim 4, characterized in that, The air supply system also includes a pressure reducing valve, which is located between the air supply source and the flow regulating valve. The pressure reducing valve is used to regulate the pressure of the compressed air output from the air source to the test pressure setting range.

7. A semi-physical simulation test method for a hydrogen fuel turbine engine control system, characterized in that, An electronic controller applied to a semi-physical simulation test system for a hydrogen fuel turbine engine control system as described in any one of claims 1 to 6, the method comprising: The system receives a start signal from the console, controls the simulation system to start, and collects simulation signals, including speed signals and temperature signals. When the hydrogen fuel turbine engine in the simulation system reaches the preset speed, the flow regulating valve is opened to regulate the flow and the flow collected by the flow meter is fed back to the hydrogen fuel turbine engine. The current engine state is determined based on the simulation signal, and the corresponding actuators are controlled according to the control law to perform start-up, idling, acceleration / deceleration, steady-state speed control, and shutdown control.

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