A physical simulation platform for aircraft engine starting logic

Abstract

The invention discloses a physical simulation platform for aircraft engine starting logic, comprising an FPGA controller, a left engine speed simulation device, a right engine speed simulation device, a left engine SAV, a right engine SAV, a left engine FMV, a right engine FMV, a left engine ignition exciter, a right engine ignition exciter, a motor drive model, a power module, a power distribution module, and a serial communication module. The beneficial effects of the invention are as follows: the invention overcomes the shortcomings that due to the limitations of various conditions, the research on aircraft engine electrical control often adopts a virtual simulation platform, and lacks intuitive understanding of the control and signal transmission of various components in engine starting. The physical simulation platform for aircraft engine starting logic can replace the pure virtual simulation platform, so that the engine starting process is presented more intuitively. At the same time, the platform can be expanded for the research on stepper motor and DC motor control.

Description

Technical Field

[0001] The invention relates to a simulation platform, in particular to an aero-engine starting logic physical simulation platform, belonging to the technical field of aero-engine electrical control. Background Art

[0002] Engine starting logic is one of the important functions of aircraft engine electrical control, and it is also the starting point for studying aircraft engine control rate. Aircraft engines are large in size, and a special test bench is required to make the engine actually run. Therefore, it is often only possible in engine manufacturing units, maintenance units, and R&D units to meet the needs of the site and build a test bench at a high cost. For units engaged in engine electrical control teaching and research, due to various restrictions, they often use virtual simulation platforms to analyze and study the engine starting logic by combining engine parameters and models, and lack intuitive understanding of the control and signal transmission of various components in engine starting. Summary of the invention

[0003] The purpose of the present invention is to provide an aero-engine starting logic physical simulation platform in order to solve the above-mentioned problem.

[0004] The present invention achieves the above-mentioned purpose through the following technical scheme, which is a physical simulation platform for aircraft engine starting logic, including an FPGA controller, a left engine speed simulation device, a right engine speed simulation device, a left engine SAV, a right engine SAV, a left engine FMV, a right engine FMV, a left engine ignition exciter, a right engine ignition exciter, a motor drive model, a power module, a power distribution module, and a serial communication module.

[0005] The left engine speed simulation device and the right engine speed simulation device both include a 25GA370 DC motor and a DC motor drive module, the left engine SAV and the right engine SAV both include a 42 closed-loop stepper motor and a stepper motor drive module, the left engine FMV and the right engine FMV both include a 42 closed-loop stepper motor and a stepper motor drive module, the left engine ignition exciter and the right engine ignition exciter both include indicator lights, the indicator lights include a 5V green indicator light and a 5V blue indicator light, the power supply module adopts a 5V / 24V dual-channel switching power supply, the power distribution module distributes the 5V input voltage into 4 5V output voltages, which are respectively used to power the unit circuits, and the 24V input voltage is directly distributed to 1 24V output voltage, which is used to power the DC motor drive module, and the serial port communication module is used for the interactive connection between the controller and the host computer.

[0006] Preferably, the FPGA controller adopts a SOPC core design integrating logic operations and control algorithms.

[0007] Preferably, the left engine speed simulation device and the right engine speed simulation device simulate the speed of the engine's high-pressure rotor through a DC motor with an encoder, and display the speed of the high-pressure rotor during engine starting in real time on a host computer.

[0008] Preferably, the two groups of left engine SAVs and the two groups of right engine SAVs respectively simulate the opening of the engine's SAV and FMV through the rotation angle of the 42 closed-loop stepper motor, and reflect in real time the relationship between the opening changes of SAV and FMV and the high-pressure rotor speed during engine starting.

[0009] Preferably, the left engine ignition exciter and the right engine ignition exciter simulate the working status of the engine ignition exciter channel A and channel B through indicator lights of different colors.

[0010] Preferably, the power distribution module provides power to different types of unit circuits by grouping through line switching.

[0011] Preferably, the unit circuit 24V is directly interconnected with the DC motor drive module, the first 5V output voltage is directly interconnected with the FPGA controller, the second 5V output voltage is interconnected with the stepper motor drive modules corresponding to the left engine SAV and the left engine FMV, the third 5V output voltage is respectively interconnected with the two ignition exciters, and the fourth 5V output voltage is interconnected with the stepper motor drive modules corresponding to the right engine SAV and the right engine FMV.

[0012] The beneficial effects of the present invention are:

[0013] The present invention overcomes the shortcomings that, due to various restrictions, the research on electrical control of aircraft engines often adopts a virtual simulation platform, which lacks intuitive understanding of the control and signal transmission of various components in engine starting. The physical simulation platform of aircraft engine starting logic can replace the pure virtual simulation platform, making the engine starting process more intuitive. At the same time, the platform can be expanded to the research on stepper motor and DC motor control. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The figure is a schematic diagram of the structure of the physical simulation platform for the starting logic of an aero-engine according to the present invention. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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.

[0016] See also Figure 1As shown, an aircraft engine starting logic physical simulation platform includes an FPGA controller, a left engine speed simulation device, a right engine speed simulation device, a left engine SAV, a right engine SAV, a left engine FMV, a right engine FMV, a left engine ignition exciter, a right engine ignition exciter, a motor drive model, a power module, a power distribution module, and a serial communication module.

[0017] The left engine speed simulation device and the right engine speed simulation device both include a 25GA370 DC motor and a DC motor drive module, the left engine SAV and the right engine SAV both include a 42 closed-loop stepper motor and a stepper motor drive module, the left engine FMV and the right engine FMV both include a 42 closed-loop stepper motor and a stepper motor drive module, the left engine ignition exciter and the right engine ignition exciter both include indicator lights, the indicator lights include a 5V green indicator light and a 5V blue indicator light, the power module adopts a 5V / 24V dual-channel switching power supply, the power distribution module distributes the 5V input voltage into 4 5V output voltages, which are respectively used to power the unit circuits, the 24V input voltage is directly distributed to 1 24V output voltage, which is used to power the DC motor drive module, and the serial port communication module is used for the interactive connection between the controller and the host computer.

[0018] The present invention overcomes the shortcomings that due to the limitation of various conditions, the research on electrical control of aircraft engines often adopts a virtual simulation platform, and lacks intuitive understanding of the control and signal transmission of various components in engine starting. The aircraft engine starting logic physical simulation platform can replace the pure virtual simulation platform, so that the engine starting process is presented more intuitively. At the same time, the platform can be expanded for the research of stepper motor and DC motor control. The present invention develops an aircraft engine starting logic physical simulation platform, and realizes the intuitive reproduction of the engine starting process under the control of the host computer by designing an aircraft engine starting logic electrical simulation physical platform. The physical simulation platform includes an FPGA controller, a left engine speed simulation device and a right engine speed simulation device for simulating the speed of the engine high-pressure rotor, a left engine SAV and a right engine SAV for simulating the opening of the engine starting air valve, a left engine FMV and a right engine FMV for simulating the engine fuel metering valve, a left engine ignition exciter and a right engine ignition exciter for simulating the engine ignition exciter, a motor drive model for simulating module drive, a power supply module and a power distribution module for powering the circuit module, and a serial communication module for communicating with the host computer.

[0019] The software developed in the controller is the key to realizing the engine starting logic control. Under the command of the host computer, the software system completes the calculation of the starting logic, the output of the physical simulation module command signal, the input of the feedback signal, and the transmission of the valve position, ignition exciter and high-voltage rotor speed information to the host computer during the starting process, so as to achieve the purpose of intuitively reproducing the engine starting logic.

[0020] The FPGA controller adopts SOPC core design which integrates logic operation and control algorithm.

[0021] The left engine speed simulation device and the right engine speed simulation device simulate the speed of the engine high-pressure rotor through a DC motor with an encoder, and display the speed of the high-pressure rotor during the engine starting process on the host computer in real time.

[0022] The DC motor and stepper motor in the physical simulation platform are the key hardware systems for realizing the intuitive display of speed and valve opening during engine starting. They adopt standard PWM control and accurately feedback the real-time speed and position through the encoder to form a closed-loop control to ensure the accuracy of speed and valve opening.

[0023] The two groups of left engine SAVs and the two groups of right engine SAVs respectively simulate the opening of the engine's SAV and FMV through the rotation angle of the 42 closed-loop stepper motor, and reflect in real time the relationship between the opening changes of SAV and FMV and the high-pressure rotor speed during engine starting.

[0024] The left engine ignition exciter and the right engine ignition exciter simulate the working status of the engine ignition exciter channel A and channel B through indicator lights of different colors.

[0025] The power distribution module provides power to different types of unit circuits by grouping through line switching.

[0026] The unit circuit 24V is directly connected to the DC motor drive module, the first 5V output voltage is directly connected to the FPGA controller, the second 5V output voltage is connected to the stepper motor drive modules corresponding to the left engine SAV and the left engine FMV, the third 5V output voltage is respectively connected to the two ignition exciters, and the fourth 5V output voltage is connected to the stepper motor drive modules corresponding to the right engine SAV and the right engine FMV.

[0027] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A physical simulation platform for aircraft engine starting logic, characterized in that: Including FPGA controller, left engine speed simulator, right engine speed simulator, left engine SAV, right engine SAV, left engine FMV, right engine FMV, left engine ignition exciter, right engine ignition exciter, motor drive model, power module, power distribution module, serial communication module; The left engine speed simulation device and the right engine speed simulation device both include a 25GA370 DC motor and a DC motor drive module, the left engine SAV and the right engine SAV both include a closed-loop stepper motor and a stepper motor drive module, the left engine FMV and the right engine FMV both include a closed-loop stepper motor and a stepper motor drive module, the left engine ignition exciter and the right engine ignition exciter both include indicator lights, the indicator lights include a 5V green indicator light and a 5V blue indicator light, the power supply module adopts a 5V / 24V dual-channel switching power supply, the power distribution module distributes the 5V input voltage into 4 5V output voltages, which are respectively used to power the unit circuits, and the 24V input voltage is directly distributed to 1 24V output voltage, which is used to power the DC motor drive module, and the serial port communication module is used for the interactive connection between the controller and the host computer.

2. The aircraft engine starting logic physical simulation platform according to claim 1 is characterized by: The FPGA controller adopts a SOPC core design integrating logic operations and control algorithms.

3. The aircraft engine starting logic physical simulation platform according to claim 1 is characterized by: The left engine speed simulation device and the right engine speed simulation device simulate the speed of the engine high-pressure rotor through a DC motor with an encoder, and display the speed of the high-pressure rotor in real time on the host computer during the engine starting process.

4. The aircraft engine starting logic physical simulation platform according to claim 1 is characterized by: The two groups of left engine SAVs and the two groups of right engine SAVs respectively simulate the opening of the engine's SAV and FMV through the rotation angle of the closed-loop stepper motor, and reflect in real time the relationship between the opening changes of SAV and FMV and the high-pressure rotor speed during engine starting.

5. The aircraft engine starting logic physical simulation platform according to claim 1, characterized in that: The left engine ignition exciter and the right engine ignition exciter simulate the working states of the A channel and the B channel of the engine ignition exciter through indicator lights of different colors.

6. The aircraft engine starting logic physical simulation platform according to claim 1, characterized in that: The power distribution module supplies power to different types of unit circuits by switching groups of lines.

7. The aircraft engine starting logic physical simulation platform according to claim 6 is characterized by: The unit circuit is 24V, and the unit circuit is directly connected to the DC motor drive module. The first 5V output voltage is directly connected to the FPGA controller, the second 5V output voltage is connected to the stepper motor drive modules corresponding to the left engine SAV and the left engine FMV, the third 5V output voltage is respectively connected to the two ignition exciters, and the fourth 5V output voltage is connected to the stepper motor drive modules corresponding to the right engine SAV and the right engine FMV.

Images