Turboshaft engine fuel flow simulation method and device and electronic equipment

Abstract

The invention relates to the field of simulation, and provides a turboshaft engine fuel flow simulation method and device and electronic equipment, and the method comprises the steps: determining a basic fuel flow, an automatic adjustable fuel flow and a manual adjustable fuel flow according to received engine working parameters; a control mode conversion mark is judged, and if the control mode conversion mark is true, the last-period fuel flow serves as the real-time fuel flow at the initial moment when control mode conversion starts; and if the control mode conversion mark is false, adjusting the adjustable fuel flow according to whether the current mode is the automatic control mode or the manual control mode after the control mode conversion is completed, and then determining the real-time fuel flow according to the adjusted basic fuel flow, the automatic adjustable fuel flow and the manual adjustable fuel flow. The problems that in the prior art, fuel flow calculation is not accurate, and parameters suddenly change during mode switching are solved, and accurate simulation calculation and stable mode switching of the fuel flow of the turboshaft engine are achieved.

Description

Technical Field

[0001] The present invention relates to the field of simulation technology, and in particular to a turboshaft engine fuel flow simulation method, device and electronic equipment. Background Art

[0002] In the aviation industry, turboshaft engines are the core power units of helicopters and other aircraft. The precise control of their fuel flow is crucial to ensure flight safety and improve engine performance and efficiency. With the continuous development of aviation technology, the requirements for turboshaft engine fuel control systems are also increasing, which has prompted the research and development of more sophisticated and advanced fuel flow simulation methods.

[0003] At present, the fuel control of turboshaft engines is mainly divided into two modes: automatic control and manual control. In the automatic control mode, the throttle lever is placed in the normal flight range, and the fuel flow is controlled by moving the metering needle according to the power demand. In the manual control mode, the position of the needle remains unchanged, and the fuel flow is controlled by adjusting the throttle lever position. The choice of these two modes can be determined by the control mode selection switch or the working range of the throttle lever. The working range of the throttle lever is clearly divided into parking range, starting range, normal flight range and emergency range to adapt to different flight stages and needs.

[0004] Traditional fuel flow calculation simulation methods mainly rely on interpolation. In automatic control mode, interpolation calculation is performed between the gas generator speed Ng, power or torque and the fuel flow; in manual control mode, the fuel flow is determined by interpolation between the throttle lever angle and the fuel flow. This method meets the basic fuel flow control requirements to a certain extent.

[0005] However, the traditional fuel flow control simulation method also has some significant defects. First, in the automatic control mode, when the engine is in normal working condition and the throttle lever is accidentally pushed forward to the emergency range, the fuel flow does not change, which is inconsistent with the actual control principle of the engine's electronic control unit (EECU) or fuel regulator, and may cause abnormal engine performance. Secondly, since the Ng value in the automatic control mode changes with power, the fuel flow is not a constant value when the throttle lever is within the normal flight range; while the fuel flow in the manual mode depends entirely on the position of the throttle lever and is a constant value. This difference will cause a step change in the fuel flow when the control mode is switched from automatic to manual, and the trend may become larger or smaller. When this step change exceeds a certain range, it will cause a sharp change in Ng, which will affect the control performance and safety of the helicopter. Summary of the invention

[0006] The present invention provides a turboshaft engine fuel flow simulation method, device and electronic equipment, which solve the problems of inaccurate fuel flow calculation and sudden parameter changes during mode switching in the prior art, and realize accurate simulation calculation of turboshaft engine fuel flow and smooth mode switching.

[0007] The present invention provides a turboshaft engine fuel flow simulation method, comprising the following steps: receiving engine operating parameters, and determining a basic fuel flow rate, an automatically adjustable fuel flow rate, and a manually adjustable fuel flow rate according to the engine operating parameters; Determine the control mode conversion flag, if the control mode conversion flag is true, then at the initial moment of the control mode conversion, the fuel flow rate of the previous cycle is used as the real-time fuel flow rate; If the control mode conversion flag is false, after the control mode conversion is completed, the adjustable fuel flow is adjusted according to whether the current control mode is automatic or manual, and then the real-time fuel flow is determined based on the adjusted basic fuel flow, automatic adjustable fuel flow and manual adjustable fuel flow.

[0008] According to a turboshaft engine fuel flow simulation method provided by the present invention, the basic fuel flow, automatically adjustable fuel flow and manually adjustable fuel flow are determined according to the engine operating parameters, specifically including: the engine operating parameters include engine operating status information, throttle lever angle, torque, gas generator speed, atmospheric pressure and compressor outlet pressure; the basic fuel flow is determined according to the engine operating status information, throttle lever angle, torque, gas generator speed, atmospheric pressure and compressor outlet pressure; the automatically adjustable fuel flow is determined according to the engine operating status information, torque and gas generator speed; and the manually adjustable fuel flow is determined according to the throttle lever angle.

[0009] According to a turboshaft engine fuel flow simulation method provided by the present invention, the adjustable fuel flow is adjusted according to whether the current control mode is automatic control mode or manual control mode, specifically including: judging whether the current control mode is automatic control mode or manual control mode; if the current control mode is automatic control mode, the manually adjustable fuel flow is cleared; if the current control mode is manual control mode, the automatically adjustable fuel flow is maintained at the fuel flow of the previous cycle unchanged.

[0010] According to a turboshaft engine fuel flow simulation method provided by the present invention, the real-time fuel flow is determined based on the adjusted basic fuel flow, the automatically adjustable fuel flow and the manually adjustable fuel flow, specifically including: adding the adjusted basic fuel flow, the automatically adjustable fuel flow and the manually adjustable fuel flow as the real-time fuel flow.

[0011] According to a turboshaft engine fuel flow simulation method provided by the present invention, the working range of the throttle lever includes a parking range, a starting range, a normal flight range and an emergency range, and each working range corresponds to a different basic fuel flow.

[0012] According to a turboshaft engine fuel flow simulation method provided by the present invention, the control mode conversion includes switching from an automatic control mode to a manual control mode, and switching from a manual control mode to an automatic control mode.

[0013] The present invention also provides a turboshaft engine fuel flow simulation device, comprising the following modules: A data receiving and solving module, used for receiving engine operating parameters, and determining a basic fuel flow rate, an automatically adjustable fuel flow rate, and a manually adjustable fuel flow rate according to the engine operating parameters; A control mode conversion flag judgment module is used to judge the control mode conversion flag; The first fuel flow simulation module is used to use the previous cycle fuel flow as the real-time fuel flow at the initial moment of the control mode conversion if the control mode conversion flag is true; The second fuel flow simulation module is used to adjust the adjustable fuel flow according to whether the control mode is currently in automatic control mode or manual control mode after the control mode conversion is completed if the control mode conversion flag is false, and then determine the real-time fuel flow according to the adjusted basic fuel flow, automatic adjustable fuel flow and manual adjustable fuel flow.

[0014] The present invention also provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, it implements any of the turboshaft engine fuel flow simulation methods described above.

[0015] The present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the turboshaft engine fuel flow simulation method as described in any one of the above is implemented.

[0016] The present invention also provides a computer program product, comprising a computer program, wherein when the computer program is executed by a processor, the computer program implements any of the turboshaft engine fuel flow simulation methods described above.

[0017] A turboshaft engine fuel flow simulation method, device and electronic equipment provided by the present invention include the following beneficial effects: by receiving engine operating parameters and determining various types of fuel flow rates accordingly, and flexibly adjusting the calculation method of the fuel flow rate according to the conversion of the control mode, not only the intelligence level of turboshaft engine fuel management is improved, but also it helps to improve the fuel efficiency and operating stability of the engine, thereby providing strong support for the design and optimization of aircraft engines. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is one of the flow charts of the turboshaft engine fuel flow simulation method provided by the present invention.

[0020] Figure 2 This is the second flow chart of the turboshaft engine fuel flow simulation method provided by the present invention.

[0021] Figure 3 It is a structural schematic diagram of a turboshaft engine fuel flow simulation device provided by the present invention.

[0022] Figure 4 It is a structural schematic diagram of the electronic device provided by the present invention. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] Turboshaft engine fuel control is divided into two modes: automatic control and manual control. In automatic control, the throttle lever is placed in the normal flight range, and the metering needle moves according to power demand to control the fuel flow. In manual control, the fuel needle does not move, and the fuel flow is controlled by the throttle lever position.

[0025] Definition of control mode: It can be selected according to the control mode selection switch or throttle stick range, including automatic and manual modes.

[0026] Throttle lever working range definition: Parking range: 0°~5°; Starting range: 5°~52°; Normal flight range: 52°~62°; Emergency range: 62°~100°.

[0027] The traditional method for simulating fuel flow calculation is: in automatic mode, the gas generator speed Ng, power or torque is interpolated with the fuel flow; in manual mode, the throttle lever angle is interpolated with the fuel flow.

[0028] The shortcomings or deficiencies of the prior art are as follows: 1) When the engine is in automatic control mode, the throttle lever is pushed forward to the emergency range, and the fuel flow does not change at all, which does not conform to the automatic control principle of the EECU or fuel regulator.

[0029] 2) Since the Ng value in automatic control mode changes with power, the fuel flow is not a constant value when the throttle lever is in the normal flight range; the fuel flow in manual mode depends on the throttle lever position, so the fuel flow is a constant value when the throttle lever is in the normal flight range; when the control mode is switched from automatic to manual, the fuel flow will have a step, and the trend may become larger or smaller. When the step exceeds a certain range, Ng will change dramatically, affecting the control of the helicopter.

[0030] From the perspective of simulation, the present invention combines the two working conditions to obtain a fuel flow calculation model that can be matched according to the control mode, as follows: 1) The composition of fuel flow is divided into three parts: ① basic fuel flow determined by the throttle lever working range; ② automatic adjustable fuel flow determined by the fuel needle position; ③ manually adjustable fuel flow determined by the throttle lever position. The actual fuel flow is the sum of the three. Each throttle working range has a corresponding basic fuel flow; in manual control mode, the adjustable fuel flow determined by the fuel needle position maintains the value of the previous cycle, which is equivalent to the fuel needle being stuck; in automatic control mode, the adjustable fuel flow determined by the throttle lever position is reset to zero.

[0031] 2) Add control mode switching judgment logic: When the engine generates automatic or manual control mode switching, the actual fuel flow is equal to the basic flow; when the control mode switching does not occur, the actual flow is the flow of the previous cycle.

[0032] Combine the following Figure 1-Figure 4 Embodiments of the present invention are described in detail.

[0033] Figure 1 FIG. 1 is one of the flow charts of the turboshaft engine fuel flow simulation method provided by the present invention, such as Figure 1 As shown, the method comprises the following steps: S110, receiving engine operating parameters, and determining a basic fuel flow rate, an automatically adjustable fuel flow rate, and a manually adjustable fuel flow rate according to the engine operating parameters.

[0034] According to a turboshaft engine fuel flow simulation method provided by the present invention, the basic fuel flow, automatically adjustable fuel flow and manually adjustable fuel flow are determined according to the engine operating parameters, specifically including: the engine operating parameters include engine operating status information, throttle lever angle, torque, gas generator speed, atmospheric pressure and compressor outlet pressure; the basic fuel flow is determined according to the engine operating status information, throttle lever angle, torque, gas generator speed, atmospheric pressure and compressor outlet pressure; the automatically adjustable fuel flow is determined according to the engine operating status information, torque and gas generator speed; and the manually adjustable fuel flow is determined according to the throttle lever angle.

[0035] Specifically, the system first comprehensively receives a number of key operating parameters of the turboshaft engine, which cover in detail the engine's operating status information, the specific angle of the throttle lever, the current torque value, the speed of the gas generator, the atmospheric pressure reading, and the pressure value at the compressor outlet. After receiving this data, the system immediately enters the processing stage. First, using a preset precise algorithm, combined with parameters such as the engine's operating status, throttle lever angle, torque, gas generator speed, atmospheric pressure and compressor outlet pressure, the basic fuel flow is comprehensively calculated. This flow value is the basic amount of fuel required for the engine to maintain stable operation under given operating conditions. Subsequently, the system further obtains the automatically adjustable fuel flow based on the engine's operating status, torque and gas generator speed through a special calculation model. This flow value reflects the amount of fuel that needs to be adjusted in the automatic control mode to respond to changes in power demand. Finally, the system calculates the manually adjustable fuel flow based on the throttle lever angle separately. This value reflects the pilot's ability to change the fuel flow by adjusting the throttle lever in the manual control mode.

[0036] By accurately receiving and comprehensively analyzing multiple working parameters of the turboshaft engine, accurate calculation of basic fuel flow, automatically adjustable fuel flow and manually adjustable fuel flow is achieved. This meticulous calculation method not only significantly improves the accuracy of fuel flow control, but also helps to optimize the engine's fuel consumption and improve its economy. At the same time, decomposing the fuel flow into these three parts enables the system to more flexibly respond to changes in engine demand under different operating conditions, ensuring smooth adjustment of fuel flow and stable operation of the engine regardless of automatic or manual control mode.

[0037] S120, judging the control mode conversion flag, if the control mode conversion flag is true, then at the initial moment of the control mode conversion, the fuel flow rate of the previous cycle is used as the real-time fuel flow rate.

[0038] Specifically, during the turboshaft engine fuel flow simulation, the system continuously monitors the status of the control mode conversion flag. This flag is used to indicate whether the engine is currently switching from automatic control mode to manual control mode, or from manual control mode to automatic control mode. When the system detects that the control mode conversion flag is set to true, it means that the engine is about to or is switching the control mode. At this time, at the initial moment of the control mode conversion, the system will immediately take specific processing measures: the fuel flow value of the previous cycle is directly used as the real-time fuel flow value at the current moment. This measure ensures that at the moment of control mode switching, the fuel flow will not change suddenly and drastically, thereby avoiding the instability of the engine operating parameters caused by mode switching.

[0039] By monitoring the control mode conversion flag and taking the previous cycle fuel flow as the real-time fuel flow when the control mode is switched, the fuel flow mutation caused by the control mode switching is effectively reduced. This processing method not only helps to maintain the stable operation of the engine during the mode switching process, but also improves the robustness and reliability of the entire fuel flow simulation system.

[0040] S130. If the control mode conversion flag is false, after the control mode conversion is completed, the adjustable fuel flow is adjusted according to whether the current control mode is automatic control mode or manual control mode, and then the real-time fuel flow is determined according to the adjusted basic fuel flow, the automatic adjustable fuel flow and the manual adjustable fuel flow.

[0041] According to a turboshaft engine fuel flow simulation method provided by the present invention, the adjustable fuel flow is adjusted according to whether the current control mode is automatic control mode or manual control mode, specifically including: judging whether the current control mode is automatic control mode or manual control mode; if the current control mode is automatic control mode, the manually adjustable fuel flow is cleared; if the current control mode is manual control mode, the automatically adjustable fuel flow is maintained at the fuel flow of the previous cycle unchanged.

[0042] Specifically, in the simulation calculation of the turboshaft engine fuel flow, when the system detects that the control mode conversion flag is false, it means that the control mode is not currently switched. At this time, the system will wait until the control mode conversion is completed, and adjust the adjustable fuel flow according to the converted control mode. Specifically, the system will first determine whether the current control mode is automatic control mode or manual control mode. If the judgment result is automatic control mode, the system will automatically clear the manual adjustable fuel flow, because in automatic control mode, the adjustment of fuel flow should be based entirely on the working state and power requirements of the engine, and has nothing to do with the position of the throttle lever. On the contrary, if the judgment result is manual control mode, the system will automatically keep the automatic adjustable fuel flow unchanged at the fuel flow of the previous cycle, because in manual control mode, the pilot controls the fuel flow by adjusting the position of the throttle lever, and the automatic adjustment part should remain unchanged.

[0043] According to a turboshaft engine fuel flow simulation method provided by the present invention, the real-time fuel flow is determined based on the adjusted basic fuel flow, the automatically adjustable fuel flow and the manually adjustable fuel flow, specifically including: adding the adjusted basic fuel flow, the automatically adjustable fuel flow and the manually adjustable fuel flow as the real-time fuel flow.

[0044] Specifically, after the adjustment of the adjustable fuel flow is completed, the system will combine the current basic fuel flow, the automatic adjustable fuel flow (valid in automatic control mode) and the manual adjustable fuel flow (valid in manual control mode) to obtain the real-time fuel flow through addition operation. This flow value will serve as the basis for fuel supply under the current working conditions of the engine.

[0045] According to a turboshaft engine fuel flow simulation method provided by the present invention, the working range of the throttle lever includes a parking range, a starting range, a normal flight range and an emergency range, and each working range corresponds to a different basic fuel flow.

[0046] Specifically, the system also sets different basic fuel flow values ​​according to the working range of the throttle lever (including parking range, starting range, normal flight range and emergency range). This is because the engine has different fuel requirements in different working stages. By setting different basic fuel flow values, the engine's requirements under different working conditions can be more accurately met.

[0047] According to a turboshaft engine fuel flow simulation method provided by the present invention, the control mode conversion includes switching from an automatic control mode to a manual control mode, and switching from a manual control mode to an automatic control mode.

[0048] Specifically, when the control mode of the engine is switched from one to another, the system will follow the above process to recalculate the real-time fuel flow to ensure stable operation of the engine.

[0049] By dynamically adjusting the adjustable fuel flow according to the switching of the control mode and accurately calculating the real-time fuel flow in combination with the basic fuel flow, the accuracy and flexibility of the turboshaft engine fuel flow calculation are significantly improved. In addition, by setting the basic fuel flow value corresponding to different throttle lever operating ranges, the system can more accurately meet the fuel requirements of the engine under different operating conditions, further improving the performance and economy of the engine.

[0050] The turboshaft engine fuel flow simulation device provided by the present invention is described below. The turboshaft engine fuel flow simulation device described below and the turboshaft engine fuel flow simulation method described above can be referenced to each other.

[0051] like Figure 2 The figure shows the second flow chart of a turboshaft engine fuel flow simulation method provided by the present invention. The basic fuel flow, automatically adjustable fuel flow and manually adjustable fuel flow are calculated before the working mode is switched. The working mode switch is triggered manually, and the moment of current fuel flow calculation is the initial moment of the start of mode switching. After the mode switch is completed, the basic fuel flow will still be calculated normally every cycle; the automatically adjustable fuel flow will keep the value of the previous cycle unchanged in the manual mode, and will only be solved normally every cycle in the automatic mode; the manually adjustable fuel flow is 0 in the automatic mode, and will only be solved normally every cycle in the manual mode.

[0052] 1. Receive engine operating status information, throttle lever angle XMV, torque TRQ, gas generator speed Ng, free turbine speed Nf, atmospheric pressure P0, compressor outlet pressure P2, and calculate the current basic fuel flow ;

[0053] 2. Receive engine operating status information, torque TRQ, gas generator speed Ng, and calculate the current automatically adjustable fuel flow ;

[0054] 3. Receive the throttle lever angle XMV and calculate the current manually adjustable fuel flow ;

[0055] 4. Perform mode conversion judgment. If the control mode conversion flag is True, go to step 5; if the control mode conversion flag is False, go to step 6; 5. Real-time fuel flow at the initial moment of mode conversion The flow rate of the previous cycle ;

[0056] 6. After the mode conversion is completed, the current control mode is judged. If it enters the automatic control mode, go to step 7; if it enters the manual control mode, go to step 8; 7. In automatic control mode, the fuel flow rate can be manually adjusted Clear to zero; 8. Automatically adjustable fuel flow in manual control mode Automatically adjustable fuel flow at the initial moment of maintaining mode change constant;

[0057] 9. Based on the above basic traffic , Automatically adjustable fuel flow , Manually adjustable fuel flow , calculate the real-time fuel flow .

[0058]

[0059] The present invention has the following advantages: 1. The fuel flow is decomposed into three parts: basic flow, automatic mode adjustable flow and manual mode adjustable flow, combining the two working conditions of automatic control and manual control, and optimizing the calculation method of turboshaft engine fuel flow; 2. Add automatic / manual control mode switching judgment. At the initial moment of switching, the fuel flow rate maintains the previous cycle value to reduce parameter mutations caused by switching and increase the stability of model control.

[0060] like Figure 3 The present invention shows a turboshaft engine fuel flow simulation device, comprising: The data receiving and solving module 310 is used to receive the engine operating parameters and determine the basic fuel flow rate, the automatically adjustable fuel flow rate and the manually adjustable fuel flow rate according to the engine operating parameters; A control mode conversion flag determination module 320 is used to determine a control mode conversion flag; The first fuel flow simulation module 330 is used to use the previous cycle fuel flow as the real-time fuel flow at the initial moment of the control mode conversion if the control mode conversion flag is true; The second fuel flow simulation module 340 is used to adjust the adjustable fuel flow according to whether the control mode is currently in automatic control mode or manual control mode after the control mode conversion is completed if the control mode conversion flag is false, and then determine the real-time fuel flow according to the adjusted basic fuel flow, automatic adjustable fuel flow and manual adjustable fuel flow.

[0061] Figure 4 An example of a physical structure diagram of an electronic device is shown in FIG. Figure 4 As shown, the electronic device may include: a processor 410, a communication interface 420, a memory 430 and a communication bus 440, wherein the processor 410, the communication interface 420 and the memory 430 communicate with each other through the communication bus 440. The processor 410 may call the logic instructions in the memory 430 to execute the turboshaft engine fuel flow simulation method, the method comprising: receiving the engine operating parameters, determining the basic fuel flow, the automatic adjustable fuel flow and the manually adjustable fuel flow according to the engine operating parameters; judging the control mode conversion flag, if the control mode conversion flag is true, then at the initial moment of the control mode conversion, the previous cycle fuel flow is used as the real-time fuel flow; if the control mode conversion flag is false, then after the control mode conversion is completed, the adjustable fuel flow is adjusted according to whether the current automatic control mode is or the manual control mode, and then the real-time fuel flow is determined according to the adjusted basic fuel flow, the automatic adjustable fuel flow and the manually adjustable fuel flow.

[0062] In addition, the logic instructions in the above-mentioned memory 430 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when it is sold or used as an independent product. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc. Various media that can store program codes.

[0063] On the other hand, the present invention also provides a computer program product, which includes a computer program, which can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the turboshaft engine fuel flow simulation method provided by the above methods, which method includes: receiving engine operating parameters, determining a basic fuel flow, an automatically adjustable fuel flow, and a manually adjustable fuel flow according to the engine operating parameters; judging a control mode conversion flag, and if the control mode conversion flag is true, then at the initial moment when the control mode conversion starts, the previous cycle fuel flow is used as the real-time fuel flow; if the control mode conversion flag is false, then after the control mode conversion is completed, the adjustable fuel flow is adjusted according to whether the current control mode is automatic or manual, and then the real-time fuel flow is determined based on the adjusted basic fuel flow, automatically adjustable fuel flow, and manually adjustable fuel flow.

[0064] On the other hand, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, it is implemented to execute the turboshaft engine fuel flow simulation method provided by the above-mentioned methods. The method includes: receiving engine operating parameters, determining a basic fuel flow, an automatically adjustable fuel flow, and a manually adjustable fuel flow according to the engine operating parameters; judging a control mode conversion flag, if the control mode conversion flag is true, then at the initial moment when the control mode conversion starts, the previous cycle fuel flow is used as the real-time fuel flow; if the control mode conversion flag is false, then after the control mode conversion is completed, the adjustable fuel flow is adjusted according to whether the current control mode is automatic or manual, and then the real-time fuel flow is determined according to the adjusted basic fuel flow, automatically adjustable fuel flow, and manually adjustable fuel flow.

[0065] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0066] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0067] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A turboshaft engine fuel flow simulation method, characterized in that: include: receiving engine operating parameters, and determining a basic fuel flow rate, an automatically adjustable fuel flow rate, and a manually adjustable fuel flow rate according to the engine operating parameters; Determine the control mode conversion flag, if the control mode conversion flag is true, then at the initial moment of the control mode conversion, the fuel flow rate of the previous cycle is used as the real-time fuel flow rate; If the control mode conversion flag is false, after the control mode conversion is completed, the adjustable fuel flow is adjusted according to whether the current control mode is automatic or manual, and then the real-time fuel flow is determined based on the adjusted basic fuel flow, automatic adjustable fuel flow and manual adjustable fuel flow.

2. The turboshaft engine fuel flow simulation method according to claim 1, characterized in that: The determining of the basic fuel flow rate, the automatically adjustable fuel flow rate and the manually adjustable fuel flow rate according to the engine operating parameters specifically includes: The engine operating parameters include engine operating status information, throttle lever angle, torque, gas generator speed, atmospheric pressure and compressor outlet pressure; Determine the basic fuel flow rate according to the engine operating state information, throttle lever angle, torque, gas generator speed, atmospheric pressure and compressor outlet pressure; determining an automatically adjustable fuel flow rate based on the engine operating state information, torque and gas generator speed; A manually adjustable fuel flow rate is determined based on the throttle lever angle.

3. The turboshaft engine fuel flow simulation method according to claim 1, characterized in that: Adjust the adjustable fuel flow rate according to whether the current control mode is automatic or manual, including: Determine whether the current control mode is automatic control mode or manual control mode; If the current control mode is automatic control mode, the manually adjustable fuel flow rate will be reset to zero; If the current control mode is the manual control mode, the automatically adjustable fuel flow rate is maintained at the fuel flow rate of the previous cycle unchanged.

4. The turboshaft engine fuel flow simulation method according to claim 1, characterized in that: The determining of the real-time fuel flow rate according to the adjusted basic fuel flow rate, the automatically adjustable fuel flow rate and the manually adjustable fuel flow rate specifically includes: The adjusted basic fuel flow, the automatically adjustable fuel flow and the manually adjustable fuel flow are added together to obtain the real-time fuel flow.

5. The turboshaft engine fuel flow simulation method according to claim 2, characterized in that: The operating range of the throttle lever includes parking range, starting range, normal flight range and emergency range, and each operating range corresponds to a different basic fuel flow.

6. The turboshaft engine fuel flow simulation method according to claim 1, characterized in that: The control mode conversion includes switching from the automatic control mode to the manual control mode, and switching from the manual control mode to the automatic control mode.

7. A turboshaft engine fuel flow simulation device, characterized in that: include: A data receiving and solving module, used for receiving engine operating parameters, and determining a basic fuel flow rate, an automatically adjustable fuel flow rate, and a manually adjustable fuel flow rate according to the engine operating parameters; A control mode conversion flag judgment module is used to judge the control mode conversion flag; The first fuel flow simulation module is used to use the previous cycle fuel flow as the real-time fuel flow at the initial moment of the control mode conversion if the control mode conversion flag is true; The second fuel flow simulation module is used to adjust the adjustable fuel flow according to whether the control mode is currently in automatic control mode or manual control mode after the control mode conversion is completed if the control mode conversion flag is false, and then determine the real-time fuel flow according to the adjusted basic fuel flow, automatic adjustable fuel flow and manual adjustable fuel flow.

8. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the computer program, the turboshaft engine fuel flow simulation method as described in any one of claims 1 to 6 is implemented.

9. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the turboshaft engine fuel flow simulation method according to any one of claims 1 to 6 is implemented.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the turboshaft engine fuel flow simulation method according to any one of claims 1 to 6 is implemented.

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