A method and system for visualizing side stick input references

Abstract

This application relates to a scheme for visualizing sidestick input references, comprising: receiving data required for calculating reference stick values ​​from various data sources; calculating corresponding sidestick input reference values ​​by a sidestick input processor based on a programmed sidestick operation flow according to the received data; outputting the sidestick input reference values ​​calculated by the sidestick input processor to a display processor; generating corresponding sidestick visualization indicators based on the sidestick input reference values; and overlaying the sidestick visualization indicators from the display processor onto the main flight display screen (PFD).

Description

Technical Field

[0001] This application relates to flight control systems, and more particularly to a method and system for visualizing side stick input reference values. Background Technology

[0002] A side stick, or side control stick, is a control stick used on the side of an aircraft, as opposed to the center control stick of a traditional aircraft. For the right-hand crew, it is typically located on the control console on the right side of the cockpit, while for the left-hand crew, it is located on the control console on the left side of the cockpit. Side stick control has been used since the Wright brothers' first airplane, primarily for controlling pitch. With the increasing sophistication of fly-by-wire flight control technology and the growing demands for aircraft maneuverability, side stick control has become widely adopted in aircraft worldwide.

[0003] Using a side stick control method offers many advantages, such as:

[0004] (1) Reduce the weight of the flight control system

[0005] (2) Reduce the space requirements of the control stick in the cockpit;

[0006] (3) Improve the handling qualities of the aircraft;

[0007] (4) Reduce pilots' workload;

[0008] (5) Combined with a reclining seat, it improves the pilot's resistance to G-forces;

[0009] (6) Combined with the arm support, it reduces the pilot's inertial vibration.

[0010] Because of its many advantages, the side-stick control method is widely used in modern high-maneuverability aircraft. With the development of civil aircraft research and development projects in China, the side-stick control method has also been extensively and deeply studied and applied. For example, the side-stick control method was adopted in the research and development plan of domestic large aircraft.

[0011] However, the side-stick control method is not perfect and has its own drawbacks. For example, once the right-hand stick is used, it is impossible to switch hands to control the aircraft, and feedback design is relatively difficult. Furthermore, the side-stick position indicators commonly used in various aircraft models can only indicate the position information corresponding to the side-stick input amount. That is, when only the left-hand crew is controlling the aircraft, it indicates the left-hand crew's side-stick input amount; when only the right-hand crew is controlling the aircraft, it indicates the right-hand crew's side-stick input amount; and when both crews have control and are controlling the aircraft simultaneously, it indicates the superimposed command of the side-stick inputs from both crews. But for pilots, especially novice pilots, simply indicating the position information corresponding to the side-stick input amount is insufficient to provide adequate input reference for their operations. Most aircraft models only provide pilots with specific operational procedures in their publicly released operating manuals and other documents regarding how to perform actual flight operations based on side-stick reference values, such as C1, C2, and C3, in conjunction with other parameters (such as wind speed, flight speed, etc.). Specifically, during actual sidestick operation, pilots need to manually determine which sidestick input value to use based on the suggested operating procedures in the operation manual. In other words, in traditional sidestick operation, pilots must first memorize the sidestick operating procedures provided in the operation manual. While using the main control stick to control the aircraft for takeoff, they must also pay attention to parameters such as wind direction, wind speed, and airspeed, comparing these with the judgment thresholds in the operating procedures to determine the amount of sidestick deflection. For example, the amount of sidestick deflection needs to be determined based on the wind speed at takeoff and the presence or absence of crosswinds. All of these decisions require the pilot to make their own judgments on how to operate the sidestick.

[0012] However, the pilot's manual judgment is prone to deviations from the reference value in the side stick input, which may lead to two outcomes:

[0013] 1) Insufficient stick input by the pilot will lead to an increased takeoff distance and failure to reach a safe altitude in time;

[0014] 2) Excessive rod extension may cause accidents such as rubbing the tail of the machine.

[0015] Therefore, there is a need for a method and system that can indicate side stick input references to provide pilots with sufficient visual reference information, thereby reducing the workload of flight crews. Summary of the Invention

[0016] This application relates to a scheme for indicating pilot sidestick input references during takeoff. In this scheme, based on external input parameters such as wind speed and direction, combined with aircraft performance parameters and flight phase judgments (including airspeed judgments), sidestick input reference quantities (such as full-stroke stick values, C1, C2, C3, etc.) are dynamically calculated and output. Furthermore, the visualization can be combined with a sidestick input displacement grid diagram, and corresponding operational reference limits can be marked by referring to the coordinate positions in the grid diagram.

[0017] According to a first aspect of this application, a method for visualizing a side stick input reference is provided, comprising:

[0018] Receive the data required to calculate the reference rod quantity from various data sources;

[0019] Based on the received data, the side stick input processor calculates the corresponding side stick input reference value according to the programmed side stick operation procedure;

[0020] The side stick input reference value calculated by the side stick input processor is output to the display processor;

[0021] The display processor generates a corresponding visual indication of the side stick based on the side stick input reference value; and

[0022] The side stick visual indications from the display processor are overlaid on the main flight display (PFD).

[0023] According to a second aspect of this application, a side stick input reference visualization system is provided, comprising:

[0024] The side stick input processor is configured to calculate the corresponding side stick input reference value based on a programmed side stick operation procedure, according to data received from various data sources required for calculating the reference stick value; and

[0025] The display processor is configured to generate a corresponding sidestick visual indication based on the sidestick input reference value from the sidestick input processor, and output the sidestick visual indication and overlay it on the main flight display screen (PFD).

[0026] This overview is provided to introduce, in a simplified form, some of the concepts further described in the detailed description below. This overview is not intended to identify key or essential features of the claimed subject matter, nor is it intended to limit the scope of the claimed subject matter. Attached Figure Description

[0027] To describe how the above and other advantages and features of the invention are obtained, a more detailed description of the invention, which has been briefly described above, will be presented with reference to specific embodiments of the invention shown in the accompanying drawings. It will be understood that these drawings depict only exemplary embodiments of the invention and are therefore not intended to limit its scope. The invention will be described and explained using the drawings and with the aid of additional features and details, in which:

[0028] Figure 1 This diagram illustrates a schematic flowchart of how a pilot judges and operates parameters related to the side stick input during takeoff.

[0029] Figure 2A and 2B The diagram illustrates a procedure excerpted from the operating manual for providing suggested flight adjustment operations based on parameters related to the side stick input during the takeoff phase.

[0030] Figure 3 An example flowchart of a method for visualizing a side stick input reference according to an embodiment of this application is shown.

[0031] Figure 4A An example illustration of a side rod input displacement mesh diagram according to an embodiment of this application is shown.

[0032] Figure 4B Another example illustration of a side rod input displacement mesh diagram according to an embodiment of this application is shown.

[0033] Figure 4C Another example illustration of a side rod input displacement mesh diagram according to an embodiment of this application is shown.

[0034] Figure 4D Another example illustration of a side rod input displacement mesh diagram according to an embodiment of this application is shown.

[0035] Figure 5 A schematic diagram of the main flight display screen after overlaying a side stick input displacement mesh map according to an embodiment of this application is shown.

[0036] Figure 6 An example environment block diagram of a side stick input reference visualization system according to one embodiment of this application is shown. Detailed Implementation

[0037] As mentioned earlier, the existing side stick control method only provides positional information indicating the side stick displacement. Pilots need to determine the direction and amount of operation of the side stick by comparing various parameters from memory, according to the side stick operation procedures in the operation manual.

[0038] For example, in Figure 1 The diagram illustrates a typical operation manual's procedure for pilots to determine and operate parameters related to sidestick inputs during takeoff. It should be understood that the sidestick operation procedures may vary slightly depending on the aircraft model, but they generally follow the illustrated example.

[0039] As shown in the figure Figure 1 This is a flowchart illustrating the parameter judgment and pilot operation related to side stick input during takeoff. The specific values ​​of the side stick reference values ​​C1, C2, and C3 are related to aircraft performance and external input parameters. Current technical solutions do not provide any visual indication of these parameters; instead, they rely on standard operating procedures in the manual for procedural judgment guidance. This requires intensive training for pilots, and in actual operation, pilots must manually judge and execute the corresponding side stick control operations based on their memory of the procedures.

[0040] from Figure 1 It can be observed that during the entire takeoff phase, the pilot needs to make multiple adjustments to the side stick based on flight parameters (tailwind, crosswind, landing gear lift-off speed VR, main landing gear retraction / extension status, etc.). For example, in Figure 2A and 2B The text contains excerpts from the user manuals of one model, regarding... Figure 1 Detailed instructions on the process.

[0041] The following example is provided:

[0042] 1) If the tailwind is no more than 5 knots and the crosswind is no more than 10 knots,

[0043] Side pole………………………………Push forward PF

[0044] Push the side lever forward to 50%, gradually return it to center at 80kts, and return it to center completely at 100kts.

[0045] ...

[0046] 2) If the tailwind is greater than 5 knots or the crosswind is greater than 10 knots,

[0047] Side pole………………………………Push forward PF

[0048] Push the side lever forward to 50% (crosswind no more than 20kts) / 100% (crosswind greater than 20kts), gradually return the side lever to center at 80kts, and return it to center completely at 100kts.

[0049] 3) AT VR (when the wheel speed VR is reached), use a continuous pitch rate of approximately 3° / s, with a target attitude of 15° for both engines (12.5° for a single engine).

[0050] When taking off in crosswinds, conventional aileron headwind correction techniques are not recommended. In strong crosswinds, the side stick can be used to keep the wings level, but the offset should not exceed 1 / 3.

[0051] ...

[0052] from Figure 2A and 2B In the excerpt of the operation manual, which illustrates how to determine flight adjustment operations based on parameters related to the side stick input during takeoff, we can see that the existing operation procedures involving the side stick still mainly rely on pilots to memorize and repeatedly practice the suggested procedures to retain them in their minds, and then compare the corresponding flight parameters with the operation procedures during actual takeoff to determine how to operate the side stick.

[0053] This side-stick operation method is obviously not user-friendly for new pilots or pilots in poor condition.

[0054] Therefore, there is a need for a method and system that can indicate the side stick input reference to provide pilots with sufficient visual reference information, especially during takeoff and wheel lift phases. It can provide intuitive side stick operation references when pilots need to operate the side stick when lifting the wheel or dealing with crosswinds, which is more helpful for the training of novice pilots and can also reduce the workload of pilots in flight.

[0055] To this end, by combining the aircraft's system design, cockpit design concept, crew mission and operating procedure design, and pilot evaluation results from numerous competing aircraft routes as design inputs, this application designs a visualization method and system for indicating side stick position and side stick input reference values ​​during takeoff. This solution transforms the tedious, procedural side stick operation process from a written document into an electronic, visual display, thus providing pilots with intuitive and accurate side stick operation guidance.

[0056] This application provides a scheme for indicating pilot sidestick input references during takeoff. In this scheme, based on external input parameters such as wind speed and direction, combined with aircraft performance parameters and flight phase judgments (including airspeed judgments), the sidestick input reference quantities (such as full travel, C1, C2, C3, etc.) are dynamically calculated and output. Furthermore, the visualization display can be combined with a sidestick input displacement grid diagram, and the corresponding operational reference limits can be marked by referring to the coordinate positions in the grid diagram.

[0057] Using the above scheme, an intelligent sidestick operation instruction diagram can be realized. Pilots no longer need to pay attention to external parameters such as wind direction and wind speed and the aircraft's own performance parameters while performing takeoff operations, and also need to remember the thresholds and corresponding deflection amounts of each operation judgment in the sidestick operation process. Instead, they only need to refer to a visualized display of a sidestick input reference value generated according to this scheme (such as a sidestick input displacement grid diagram) to accurately and quickly operate the sidestick to adjust the aircraft's attitude.

[0058] In the appendix Figure 3 The diagram shows an example flowchart of a method for visualizing a side stick input reference according to an embodiment of this application.

[0059] like Figure 3 As shown, in step 301, the system receives the data required to calculate the reference lever value from various data sources. For example, it can receive external environmental parameters, such as crosswind speed and direction, from various sensors on the fuselage; it can receive internal aircraft performance parameters, such as current speed, from other sensors on the fuselage; and it can also receive flight phase data, such as whether the main landing gear has lifted off the ground, from the flight computer.

[0060] In step 302, based on the received data, the sidestick input processor calculates the corresponding sidestick input reference value (or reference range) according to a programmed sidestick operation procedure. The sidestick input processor is a module used to dynamically calculate the sidestick input reference value (or reference range) based on external input parameters, such as wind speed and direction, combined with the aircraft's own performance parameters and flight phase judgments (including airspeed judgments). It can be implemented using hardware or software programming. After calculating the sidestick reference value, the reference value is output to the next step.

[0061] Specifically, the sidestick input processor can be configured according to the detailed operating instructions for the sidestick section in commonly used flight operation manuals. In the sidestick input processor, the operating manual's guidance procedures for sidestick operation (such as...) Figure 2A and 2B The content shown is compiled into a corresponding program, which is then programmed by the side stick input processor to determine whether the relevant conditions in the side stick operation procedure are met. If the side stick operation conditions are met, a side stick input reference value is calculated. This reference value can be a specific numerical value or a range of numerical values.

[0062] For example, during the ground phase, if only the sidestick is being tested, only the command position needs to be displayed, without providing a reference stick value. Therefore, the sidestick input processor first needs to determine the aircraft's flight phase. For instance, if wheel signals indicate the aircraft is on the ground and the brakes are not released, it is assumed the aircraft has not entered the takeoff phase. In this case, the sidestick command input is mainly used for the ground testing phase, and a reference stick value does not need to be displayed to avoid excessive information on the PFD page. Furthermore, the sidestick input processor can receive wind direction and speed calculated by the system, thereby outputting a reference range of stick pressure that the pilot may need to apply to balance the effects of crosswinds, i.e., a reference range for which side (the windward side) the stick should be pressed and the magnitude of the pressure.

[0063] During takeoff acceleration and braking after brake release, to balance engine impact and increase nose wheel friction for nose stability, a stick deflection of 50% is recommended. After reaching airspeed of 80 knots, the stick deflection should gradually return to the center (returning to 0 at 100 knots). Therefore, the calculated stick deflection reference range should be from 50% gradually returning to the center and returning to 0 at 100 knots.

[0064] It should be understood that the main function of the side stick input processor is to obtain the side stick input reference value or reference range by programming the judgment steps in the side stick operation process to replace manual judgment.

[0065] Subsequently, in step 303, the side stick input reference value (or reference range) calculated by the side stick input processor is output to the display processor for processing.

[0066] Next, in step 304, the display processor generates a corresponding side stick visual indication based on the side stick input reference value calculated by the side stick input processor.

[0067] To facilitate pilot understanding and reading, the concept of a side stick input displacement grid diagram has been introduced into the visual indication of the side stick. Figure 4A An example illustration of a side rod input displacement mesh diagram according to an embodiment of this application is shown (illustration during the testing phase of the side rod).

[0068] Specifically, in the side rod input displacement grid diagram, the full stroke of the side rod's pull rod is used as the upper half of the grid coordinate system (with the pull rod stroke at 0 as the origin and the maximum pull rod stroke at +1), the full stroke of the push rod is used as the lower half of the grid coordinate system (with the push rod stroke at 0 as the origin and the maximum push rod stroke at -1), the full left roll stroke of the side rod is used as the left half of the horizontal axis (with the left roll stroke at 0 as the origin and the maximum left roll stroke at -1), and the full right roll stroke of the side rod is used as the right half of the horizontal axis (with the right roll stroke at 0 as the origin and the maximum right roll stroke at +1). This definition constructs a side rod input displacement grid diagram, also known as a displacement coordinate diagram, where all possible input displacements of the side rod can be marked at their corresponding coordinates. In other words, the vertical axis of the grid diagram represents the displacement of the side rod during its push-pull motion throughout its full stroke, while the horizontal axis represents the displacement of the side rod in the left and right roll directions throughout its full stroke. The intersection of the horizontal and vertical axes (i.e., the "0°" point, also known as the origin of the coordinate system) indicates that the pilot has not made any operation on the side stick.

[0069] In addition, the current position (or lever position) of the side lever input is indicated by a cross symbol in the grid diagram. Figure 4A In the diagram, the current position of the side lever input represented by the cross indicates that the side lever is currently pulled to approximately 0.65 of its full travel (with the maximum travel of the lever as "1") and approximately 0.2 of its full right roll travel (with the maximum right roll travel as "1"). Since this is during the side lever testing phase, therefore, the... Figure 4A The current position of the side rod input is shown only in the side rod input displacement grid diagram.

[0070] However, in addition to visually presenting the current position of the side rod input quantity in a grid coordinate manner, the side rod input displacement grid diagram of this application can also provide a dashed box. This dashed box represents the side rod input reference quantity (or reference range) calculated by the side rod input processor, that is, the side rod input displacement range suggested by the side rod input processor based on the received data, such as in... Figure 4B As shown. The dashed box is merely a schematic diagram; during actual flight, the boxes will generally be concentrated within a certain quadrant.

[0071] It should be understood that as the flight phase, flight conditions, and flight performance change continuously during flight, the side stick input reference quantity (or reference range) calculated by the side stick input processor also changes continuously. Therefore, the position and size of the corresponding virtual box also change continuously in the mesh diagram.

[0072] For the pilot, since the side stick input processor has calculated the most suitable side stick input reference value (or reference range) for the current flight operation according to the programmed side stick operation procedure, he only needs to manipulate the side stick so that its corresponding position (cross mark) moves into the virtual square representing the side stick input reference value to accurately and smoothly complete the required flight operation. Therefore, the virtual square can also be called the reference range of the side stick's "target position (or stick amount)".

[0073] For example, in Figure 4C The diagram shows another example of a side rod input displacement mesh. This example illustrates the following scenario:

[0074] When the speed is below 80 knots and the wind speed is less than the set value but greater than the crosswind judgment threshold, the side stick input processor calculates the side stick input reference value (reference stick pusher is C1; crosswind reference stick value is C2) according to the side stick operation procedure.

[0075] Therefore, in Figure 4C In the diagram, C1 and C2 are used as the width and length of the virtual squares to mark the positional reference range of the target side stick input. This way, the pilot does not need to recall the operating procedures for the current situation from the manual; instead, they can directly manipulate the side stick to move its position within the virtual square of the target side stick position reference range, thus completing the corresponding flight operation.

[0076] For example, in Figure 4D Another example illustration of the side rod input displacement mesh diagram is shown below. This example illustration addresses the following situation:

[0077] If the wheel-lifting speed is reached and the left-side wind exceeds the crosswind threshold, then according to the side pole operation procedure, the side pole input processor calculates (lateral wind direction reference pole amount C2; longitudinal reference pole amount C3).

[0078] Therefore, in Figure 4D In the grid diagram, C2 and C3 are used as the length and width of the virtual box to mark the reference range of the target side rod position.

[0079] It should be understood that in some special circumstances, the pilot may need to manipulate the side stick to position it on the critical line of the box.

[0080] It should also be understood that the crosshairs and dashed squares are merely illustrative examples representing the current position and target position reference range of the side stick. In practice, technicians may use other markings or symbols as needed. Furthermore, for emphasis, the crosshairs and dashed squares may be assigned different striking colors for easy visual observation by the pilot.

[0081] Finally, in step 305, the side stick visualization indication (i.e., the side stick input displacement grid) from the display processor is overlaid on the main flight display screen PFD.

[0082] exist Figure 5 The image shows a main flight display screen after overlaying a side stick input displacement grid map according to an embodiment of this application. Since the main flight display screen itself contains a lot of information, markers, and lines, the grid background of the side stick input displacement grid map can be removed during overlay, retaining only the right-angled frames at the four corners of the grid map, the crosshairs indicating the current position of the side stick, and the dashed squares indicating the side stick input reference values. This makes the overlaid main flight display screen more concise.

[0083] It should be noted that when overlaying the side stick input reference values ​​on the main flight display screen, the relationship between the side stick input and attitude should be fully considered. For example, pulling the stick will increase the aircraft's pitch angle (i.e., pitching up), while pushing the stick will decrease the aircraft's pitch angle (pitch down). Therefore, when determining the side stick input displacement grid diagram, the direction indicated by the displacement symbols corresponding to the pitch and roll commands should be ensured to be correct.

[0084] In some embodiments, the visualization scheme is not limited to the main flight display screen, but can also be applied to system pages, such as the system diagram page. The determination of the pitch and roll command directions should be consistent with the aircraft body coordinate system or control surface motion coordinate system involved in the system page.

[0085] Of course, in other embodiments, if necessary, the side stick input displacement grid diagram of the side stick visualization indicator can also be displayed separately on a display screen. In this case, the grid background can be displayed at the same time to facilitate the pilot's focus on operating the side stick.

[0086] This concludes the example flowchart of the method for visualizing the side stick input reference.

[0087] However, it should be understood that the process is executed cyclically during the applicable flight phase; therefore, the position of the dashed box on the grid diagram is actually dynamic. To maintain continuity, the technician can set a time interval, i.e., a refresh rate, between the two process flows, for example, 500ms.

[0088] After reviewing the example flowchart of the side stick input reference visualization method of this application, the corresponding side stick input reference visualization system will be introduced below.

[0089] exist Figure 6 The diagram shows an example environment block diagram of a side stick input reference visualization system according to one embodiment of this application.

[0090] As shown in the figure, the side stick input reference visualization system 620 mainly includes: a side stick input processor 622 and a display processor 624.

[0091] After receiving the data required to calculate the reference stick quantity from the data source 610, such as external environmental parameters (e.g., crosswind speed and direction), aircraft performance parameters (e.g., the aircraft's current speed), and flight phase data (e.g., whether the main landing gear is off the ground), the sidestick input processor 622 calculates the corresponding sidestick input reference quantity (or reference range) based on the received data and the programmed sidestick operation procedure.

[0092] Subsequently, the display processor 624 generates a corresponding sidestick visualization instruction based on the sidestick input reference value from the sidestick input processor 622. As mentioned earlier, the sidestick visualization instruction can be a sidestick input displacement grid diagram. In this grid diagram, each full stroke of the sidestick is used as a coordinate axis, and a crosshair is used to mark the current position (stick position) of the sidestick input value. At the same time, the sidestick input reference value is marked as a dashed box at the corresponding position in the grid coordinates. In this way, the pilot can intuitively understand which target position the sidestick should be moved to to achieve the corresponding flight operation.

[0093] Finally, the display processor 624 provides the generated side stick visualization indication to the PFD 630 to overlay the side stick input displacement grid onto the main flight display screen.

[0094] It should be understood that the side stick input reference visualization system operates cyclically throughout the flight, and therefore the position of the virtual box on the side stick input displacement grid is also dynamically changing.

[0095] Thus, the visualization scheme of the side stick input amount of this application can be applied to the aircraft cockpit display system, such as the main flight display screen or system page, wherein the visualization reference scheme of the side stick input amount should be based on the relative coordinate position in the side stick input displacement grid diagram.

[0096] A visualization solution applied to the main flight display (PFD) is considered a preferred embodiment because takeoff is a crucial phase of flight with a heavy workload for the flight crew, whose focus is primarily on the main field of view, such as the PFD. With this solution, pilots can not only observe and check the current input position of the side stick through a displacement grid diagram when operating it, but also use the visualized side stick input reference box to standardize the takeoff operation procedure.

[0097] Therefore, this application has good versatility. Based on the performance parameters of different aircraft models and the takeoff procedure settings, the reference values ​​C1, C2, and C3 for the side stick input can be determined, and their specific values ​​can be compared with the side stick input displacement grid diagram (see...). Figure 4B Combined with the coordinate positions in the grid diagram, the corresponding side rod operation reference limits are marked.

[0098] It should be understood that the proposed solution is applicable not only to existing aircraft models, but also to subsequent models that use side sticks.

[0099] While different embodiments have been described above, it should be understood that they are merely examples and not limitations. Those skilled in the art will appreciate that various modifications in form and detail may be made without departing from the spirit and scope of the invention as defined in the appended claims. Therefore, the breadth and scope of the invention disclosed herein should not be limited by the exemplary embodiments disclosed above, but should be defined solely by the appended claims and their equivalents.

Claims

1. A method for visualizing side stick input reference, comprising: Receive the data required to calculate the reference rod quantity from various data sources; Based on the received data, the side stick input processor calculates the corresponding side stick input reference value according to the programmed side stick operation procedure; The side stick input reference value calculated by the side stick input processor is output to the display processor; The display processor generates a corresponding visual indication of the side stick based on the side stick input reference value; as well as The side stick visual indication from the display processor is overlaid on the main flight display (PFD); The side stick visualization indicator is a side stick input displacement grid. The vertical axis of the grid represents the displacement of the side stick during its full travel (pull or push), while the horizontal axis represents the displacement of the side stick during its full travel (roll or roll). The intersection of the horizontal and vertical axes indicates that the pilot has not made any operation to the side stick. Different marks or symbols are also used to represent the current position of the side stick input and the side stick input reference value, respectively.

2. The method as described in claim 1, characterized in that, The data required for calculating the reference stick position includes: external environmental parameters, aircraft performance parameters, and flight phase data.

3. The method as described in claim 2, characterized in that, The step of calculating the corresponding side stick input reference value by the side stick input processor based on the received data and a programmed side stick operation procedure includes: The side stick input processor is programmed according to the side stick operation procedure in the operation manual, so that the side stick input processor dynamically calculates the side stick input reference value based on the external input parameters, combined with the aircraft performance parameters and the flight phase data.

4. The method as described in claim 1, characterized in that, The side stick input reference value includes a reference range for the side stick input.

5. The method as described in claim 1, characterized in that, The crosshair indicates the current position of the side stick input, while the dashed box indicates the reference value of the side stick input.

6. The method as described in claim 5, characterized in that, The method is executed cyclically during the applicable flight phase, so that the position of the virtual box on the side rod input displacement grid is also dynamically changing.

7. A side stick input quantity reference visualization system, comprising: The side stick input processor is configured to calculate the corresponding side stick input reference value based on a programmed side stick operation procedure, according to the data required for calculating the reference stick value received from various data sources. as well as The display processor is configured to generate a corresponding sidestick visualization indication based on the sidestick input reference value from the sidestick input processor, and output and overlay the sidestick visualization indication on the main flight display (PFD). The sidestick visualization indication is a sidestick input displacement grid, where the vertical axis represents the displacement of the sidestick during its full travel (push-pull), and the horizontal axis represents the displacement of the sidestick during its full travel (left-right roll). The intersection of the horizontal and vertical axes indicates that the pilot has not performed any operation on the sidestick. The display processor also uses different markers or symbols to represent the current position of the side stick input and the side stick input reference value, respectively.

8. The side stick input reference visualization system as described in claim 7, characterized in that, The crosshair indicates the current position of the side stick input, while the dashed box indicates the reference value of the side stick input.

9. The side stick input reference visualization system as described in claim 8, characterized in that, The side stick input reference visualization system operates cyclically during the applicable flight phases, so the position of the dashed box on the side stick input displacement grid is also dynamically changing.

10. The side stick input reference visualization system as described in claim 7, characterized in that, The side stick input processor is further configured to be programmed according to the side stick operation procedure in the operation manual, so that the side stick input processor dynamically calculates the side stick input reference value based on the received data.

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