Adjustable Guide Vane Calibration Method and System, and Computer Readable Storage Medium

Abstract

The present invention relates to an adjustable guide vane calibration method and system, as well as a computer-readable storage medium. The adjustable guide vane includes an actuator and a stator vane, and the actuator drives the stator vane to rotate. The adjustable guide vane calibration method includes the following steps: causing the actuator to move at a first speed; sampling the displacement signal of the actuator and the rotation angle signal of the stator vane at a first sampling frequency; respectively fitting the rotation angle signal-time curve and the displacement signal-time curve, converting the rotation angle signal value and the displacement signal value into the vane angle value and the actuator displacement value respectively, and interpolating the displacement value of the actuator corresponding to the calibration target angle of the adjustable guide vane through the fitting curve. By appropriately sampling data to obtain a signal curve and realizing calibration through the correspondence of the signal curves, repeated calibration sampling of the same calibration value is avoided, thereby improving the calibration efficiency. At the same time, due to continuous sampling, the error caused by back-and-forth sampling is avoided, and the calibration accuracy is improved.

Description

Technical Field

[0001] The present invention relates to the field of aeroengines, and particularly relates to an adjustable guide vane calibration method and system, and a computer-readable storage medium. Background Art

[0002] The adjustable stator guide vane system of a high-pressure compressor (hereinafter referred to as the adjustable guide vane) includes two parts: an external device, i.e., an adjusting mechanism, installed on the casing, and stator vanes installed between the inner rotors of the high-pressure compressor. The external device of the adjustable guide vane includes a hydraulic actuator, a driving arm (in the form of a double-crank rocker or a torsion bar, etc.), a feedback sensor, and a linkage ring; the internal device of the adjustable guide vane includes an inlet guide vane (abbreviated as IGV) and a variable stator vane (abbreviated as VSV). The overall movement of the adjustable guide vane is that the piston in the actuator pushes the driving arm, the driving arm pushes the linkage ring to make the linkage ring rotate around the engine axis, and then the linkage ring drives the rocker arm to rotate around the rotation axis of the stator vane, and the rotation of the rocker arm makes the stator vane rotate around the rotation axis, thereby realizing the adjustment of the angle of the stator vane.

[0003] The calibration of the adjustable guide vane refers to the process of confirming the relationship between the rotation angle of the adjustable stator vane and the elongation of the hydraulic actuator in the engine. Accurate calibration can ensure the final adjustment accuracy and the control accuracy of the adjustable guide vane.

[0004] In the prior art, the calibration methods for the adjustable guide vane mainly include an artificial calibration method and a semi-automatic calibration method.

[0005] Both of these methods rely on manual work and have the defects of low efficiency and large errors.

[0006] In addition, Chinese Patent Application CN201811162633.7 discloses an adjustable guide vane calibration method. This method performs repeated adjustment and calibration by comparing the difference between the target calibration value and the actual angle value of the adjustable guide vane. For one calibration value, multiple repeated corrections and calibrations are required. Although this method no longer requires manual work, it is still inefficient, the process is cumbersome, and since it only needs to ensure that the above difference is within a certain range to consider the calibration successful, the accuracy is also difficult to guarantee. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to overcome the defects of the prior art calibration methods, such as low efficiency and low accuracy, and provide an adjustable guide vane calibration method and system, and a computer-readable storage medium with high calibration efficiency and high accuracy.

[0008] The present invention solves the above technical problem by the following technical solutions:

[0009] An adjustable guide vane calibration method, where the adjustable guide vane includes an actuator and a stator vane, the actuator drives the stator vane to rotate, and the adjustable guide vane calibration method includes the following steps:

[0010] Make the actuator move at a first speed;

[0011] Sample the displacement signal of the actuator and the rotation angle signal of the stator vane at a first sampling frequency;

[0012] Respectively fit the rotation angle signal-time curve and the displacement signal-time curve, convert the rotation angle signal value and the displacement signal value into the vane angle value and the actuator displacement value respectively, and interpolate the displacement value of the actuator corresponding to the calibration target angle of the adjustable guide vane through the fitted curve.

[0013] In this solution, signal curves are obtained through appropriate data sampling, and calibration is achieved through the correspondence of the signal curves, thereby avoiding repeated calibration sampling for the same calibration value, improving the calibration efficiency. At the same time, due to continuous sampling, the error caused by back-and-forth sampling is avoided, and the calibration accuracy is improved.

[0014] Preferably, the value range of the first speed is: 0 - 100 mm / s.

[0015] In this solution, when the first speed is within this value range, the sampling accuracy can be guaranteed, thereby ensuring the calibration accuracy.

[0016] Preferably, the value range of the first sampling frequency is: 0 - 0.1 Hz.

[0017] In this solution, when the first sampling frequency is within this value range, the sampling accuracy can be guaranteed, thereby ensuring the calibration accuracy.

[0018] Preferably, the displacement signal and the rotation angle signal are collected by a data acquisition card.

[0019] Preferably, the rotation angle of the stator vane is detected by an angle sensor and sent to the data acquisition card, and / or the displacement of the actuator is detected by a displacement sensor and sent to the data acquisition card.

[0020] Preferably, the data acquisition card sends the displacement signal and the rotation angle signal to an upper computer, and the upper computer respectively fits the rotation angle signal-time curve and the displacement signal-time curve, converts the rotation angle signal value and the displacement signal value into the vane angle value and the actuator displacement value respectively, and interpolates the displacement value of the actuator corresponding to the calibration target angle of the adjustable guide vane through the fitted curve.

[0021] Preferably, the actuator is driven by an actuator pressure equipment.

[0022] Preferably, the adjustable guide vane further includes a driving arm, a linkage ring and a rocker arm. The actuating cylinder drives the driving arm, the driving arm pushes the linkage ring to rotate around the engine axis, the linkage ring drives the rocker arm to rotate around the stator blade rotation axis, and the rocker arm drives the stator blade to rotate around its rotation axis.

[0023] An adjustable guide vane calibration system, the adjustable guide vane includes an actuating cylinder and a stator blade, the actuating cylinder drives the stator blade to rotate, and the adjustable guide vane calibration system includes: an actuating cylinder pressure boosting device, an adjustable guide vane, an angle sensor, a displacement sensor, a data acquisition card and a host computer;

[0024] The actuating cylinder pressure boosting device is used to drive the actuating cylinder to move at a first speed. The angle sensor is used to detect the rotation angle of the stator blade and send the rotation angle signal to the data acquisition card, and / or, the displacement sensor is used to detect the displacement of the actuating cylinder and send the displacement signal to the data acquisition card. The data acquisition card is used to collect the rotation angle signal and the displacement signal at a first sampling frequency and send the rotation angle signal and the displacement signal to the host computer. The host computer respectively fits the rotation angle signal-time curve and the displacement signal-time curve, converts the rotation angle signal value and the displacement signal value into the blade angle value and the actuating cylinder displacement value respectively, and interpolates the displacement value of the actuating cylinder corresponding to the calibration target angle of the adjustable guide vane through the fitting curve.

[0025] In this solution, the signal curve is obtained through appropriate data sampling, and the calibration is realized through the correspondence of the signal curve, thereby avoiding repeated calibration sampling for the same calibration value, improving the calibration efficiency. At the same time, due to continuous sampling, the error caused by back-and-forth sampling is avoided, and the calibration accuracy is improved.

[0026] Preferably, the adjustable guide vane further includes a driving arm, a linkage ring and a rocker arm. The actuating cylinder drives the driving arm, the driving arm pushes the linkage ring to rotate around the engine axis, the linkage ring drives the rocker arm to rotate around the stator blade rotation axis, and the rocker arm drives the stator blade to rotate around its rotation axis.

[0027] Preferably, the value range of the first speed is: 0 to 100 mm / s.

[0028] In this solution, when the first speed is within this value range, the sampling accuracy can be guaranteed, thereby guaranteeing the calibration accuracy.

[0029] Preferably, the value range of the first sampling frequency is: 0 to 0.1 Hz.

[0030] In this solution, when the first sampling frequency is within this value range, the sampling accuracy can be guaranteed, thereby guaranteeing the calibration accuracy.

[0031] A computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the above-mentioned adjustable guide vane calibration method is implemented.

[0032] The positive and progressive effects of the present invention are as follows: The calibration method can realize the automatic acquisition of the calibration results of the adjustable guide vane; the calibration process does not require precise control of the hydraulic system, does not need to pause, and reduces the calibration cost; the calibration process is more efficient and the calibration results are more accurate; it is possible to further study the influence of the movement speed of the actuator on the angle of the adjustable guide vane during the operation of the system to analyze the control delay effect and mechanical delay effect of the adjustable guide vane. Description of the Drawings

[0033] Figure 1 It is a schematic flow chart of the adjustable guide vane calibration method according to Embodiment 1 of the present invention.

[0034] Figure 2 It is a schematic module structure diagram of the adjustable guide vane calibration system according to Embodiment 1 of the present invention.

[0035] Figure 3 It is a schematic diagram of signal acquisition according to Embodiment 1 of the present invention.

[0036] Figure 4 It is a time-domain signal diagram during the full working cycle of the system according to Embodiment 1 of the present invention.

[0037] Figure 5 It is a corresponding relationship diagram of converting signal values into blade angle values and actuator displacement values / blade rotation angle and actuator elongation at the same time point according to Embodiment 1 of the present invention. Detailed Embodiments

[0038] The present invention will be further described below in conjunction with the drawings by way of examples, but the present invention is not limited to the scope of the examples.

[0039] Embodiment 1

[0040] This embodiment provides an adjustable guide vane calibration method. The adjustable guide vane includes an actuator and a stator blade, and the actuator drives the stator blade to rotate. As Figure 1 shown, the adjustable guide vane calibration method includes the following steps:

[0041] Make the actuator move at a first speed;

[0042] Sample the displacement signal of the actuator and the rotation angle signal of the stator blade at a first sampling frequency;

[0043] The angle signal-time curve and displacement signal-time curve are respectively fitted. The angle signal value and displacement signal value are respectively converted into the blade angle value and the actuator displacement value, and the displacement value of the actuator corresponding to the calibrated target angle of the adjustable guide vane is interpolated through the fitted curve.

[0044] The signal curve is obtained through appropriate data sampling, and calibration is achieved through the correspondence of the signal curve, thus avoiding repeated calibration sampling for the same calibration value, improving the calibration efficiency. At the same time, due to continuous sampling, the error caused by back-and-forth sampling is avoided, and the calibration accuracy is improved.

[0045] This calibration method can realize the automatic acquisition of the calibration results of the adjustable guide vane; the calibration process does not require precise control of the hydraulic system and does not need to pause, reducing the calibration cost; the calibration process is more efficient and the calibration results are more accurate; the influence of the movement speed of the actuator on the angle of the adjustable guide vane during the operation of the system can be further studied to analyze the control delay effect and mechanical delay effect of the adjustable guide vane.

[0046] The value range of the first speed is: 0 - 100 mm / s.

[0047] Within this value range of the first speed, the sampling accuracy can be guaranteed, thus guaranteeing the calibration accuracy.

[0048] The value range of the first sampling frequency is: 0 - 0.1 Hz.

[0049] Within this value range of the first sampling frequency, the sampling accuracy can be guaranteed, thus guaranteeing the calibration accuracy.

[0050] The displacement signal and angle signal are collected by a data acquisition card.

[0051] The rotation angle of the stator vane is detected by an angle sensor and sent to the data acquisition card. The displacement of the actuator is detected by a displacement sensor and sent to the data acquisition card. Among them, the angle sensor can be an encoder or other devices that can detect the rotation angle of the stator vane.

[0052] The data acquisition card sends the displacement signal and angle signal to an upper computer, and the upper computer is used to fit the angle signal-time curve and displacement signal-time curve, and interpolate the displacement signal value of the actuator corresponding to the calibrated target angle of the adjustable guide vane through the fitted curve.

[0053] The actuator is driven by an actuator pressure equipment. The actuator is a hydraulic actuator.

[0054] The adjustable guide vane further includes a driving arm, a linkage ring, and a rocker arm. The actuating cylinder drives the driving arm, the driving arm pushes the linkage ring to rotate around the engine axis, the linkage ring drives the rocker arm to rotate around the stator vane rotation axis, and the rocker arm drives the stator vane to rotate around its rotation axis. Those skilled in the art should understand that even if the internal structure of the adjustable guide vane and the connection structure between the actuating cylinder and the stator vane change, it does not affect the implementation and application of the adjustable calibration method of the present invention, because the present invention collects the rotation angle signal of the stator vane and the displacement signal of the actuating cylinder.

[0055] Figure 2 Schematically shows an example of an adjustable guide vane calibration system for implementing the calibration method of this embodiment.

[0056] The adjustable guide vane calibration system includes: an actuating cylinder pressure boosting device, an adjustable guide vane, an angle sensor, a displacement sensor, a data acquisition card, and a host computer.

[0057] The adjustable guide vane includes an actuating cylinder and a stator vane, and the actuating cylinder drives the stator vane to rotate.

[0058] The actuating cylinder pressure boosting device is used to drive the actuating cylinder to move at a first speed. The angle sensor is used to detect the rotation angle of the stator vane and send the rotation angle signal to the data acquisition card, and / or, the displacement sensor is used to detect the displacement of the actuating cylinder and send the displacement signal to the data acquisition card. The data acquisition card is used to collect the rotation angle signal and the displacement signal at a first sampling frequency and send the rotation angle signal and the displacement signal to the host computer. The host computer respectively fits the rotation angle signal-time curve and the displacement signal-time curve, and interpolates the displacement signal value of the actuating cylinder corresponding to the calibration target angle of the adjustable guide vane through the fitting curve.

[0059] The value range of the first speed is: 0 - 100 mm / s.

[0060] When the first speed is within this value range, the sampling accuracy can be guaranteed, thereby ensuring the calibration accuracy.

[0061] The value range of the first sampling frequency is: 0 - 0.1 Hz.

[0062] When the first sampling frequency is within this value range, the sampling accuracy can be guaranteed, thereby ensuring the calibration accuracy.

[0063] The actuating cylinder pressure boosting device drives the actuating cylinder by providing oil pressure to the actuating cylinder.

[0064] The adjustable guide vane further includes a driving arm, a linkage ring, and a rocker arm. The actuating cylinder drives the driving arm, the driving arm pushes the linkage ring to rotate around the engine axis, the linkage ring drives the rocker arm to rotate around the stator blade rotation axis, and the rocker arm drives the stator blade to rotate around its rotation axis.

[0065] An installation tooling is also installed on the stator blade and is used to cooperate with an angle sensor to measure the rotation angle of the stator blade.

[0066] Figure 3 The figure shows the signal acquisition situation of the adjustable guide vane calibration system when the first sampling frequency is f, the starting time is T0 + 1t, and the sampling period t = 1 / f. By increasing the first sampling frequency, the density of sampling points can be increased.

[0067] Figure 4 The figure shows the rotation angle signal-time curve and displacement signal-time curve fitted during the entire working process of the adjustable guide vane calibration system from one extreme position to another extreme position. Among them, T n is the time spent for the entire working process. By reducing the extension speed of the actuating cylinder, the working cycle of the adjustable guide vane calibration system can be increased, which can play a role in increasing the relative density of sampling points.

[0068] Figure 5 It schematically shows the corresponding relationship between converting the signal value into the blade angle value and the displacement value of the actuating cylinder / the blade rotation angle and the elongation of the actuating cylinder at the same time point.

[0069] R0 is the starting calibration target angle of the adjustable guide vane. By interpolating the displacement value L0 of the actuating cylinder corresponding to the calibration target angle of the adjustable guide vane through the fitting curve, the other calibration target angles R of the adjustable guide vane n can find the corresponding displacement value L of the actuating cylinder through the same method n .

[0070] Embodiment 2

[0071] This embodiment provides a computer-readable storage medium storing a computer program, and when the computer program is executed by a processor, it implements the adjustable guide vane calibration method of Embodiment 1.

[0072] Although the specific implementation manners of the present invention have been described above, those skilled in the art should understand that this is only for illustration. The protection scope of the present invention is defined by the appended claims. Without departing from the principles and essence of the present invention, those skilled in the art can make various changes or modifications to these implementation manners, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. An adjustable guide vane calibration method, wherein the adjustable guide vane includes an actuator and a stator vane, and the actuator drives the stator vane to rotate, characterized in that the adjustable guide vane calibration method includes the following steps: making the actuator move at a first speed; sampling the displacement signal of the actuator and the rotation angle signal of the stator vane at a first sampling frequency; respectively fitting a rotation angle signal-time curve and a displacement signal-time curve, converting the rotation angle signal value and the displacement signal value into a vane angle value and an actuator displacement value respectively, and interpolating the displacement value of the actuator corresponding to the calibration target angle of the adjustable guide vane through the fitting curve.

2. The adjustable guide vane calibration method according to claim 1, characterized in that, The value range of the first speed is: 0 to 100 mm / s.

3. The adjustable guide vane calibration method according to claim 1, characterized in that The displacement signal and the rotation angle signal are collected by a data acquisition card.

4. The adjustable guide vane calibration method according to claim 3, wherein The rotation angle of the stator vane is detected by an angle sensor and sent to the data acquisition card, and / or the displacement of the actuator is detected by a displacement sensor and sent to the data acquisition card.

5. The adjustable guide vane calibration method according to claim 3, characterized in that The data acquisition card sends the displacement signal and the rotation angle signal to an upper computer, and the upper computer respectively fits a rotation angle signal-time curve and a displacement signal-time curve, converts the rotation angle signal value and the displacement signal value into a vane angle value and an actuator displacement value respectively, and interpolates the displacement value of the actuator corresponding to the calibration target angle of the adjustable guide vane through the fitting curve.

6. The adjustable guide vane calibration method according to claim 1, characterized in that The actuator is driven by an actuator pressure equipment.

7. The calibration method of the adjustable guide vane according to claim 1, characterized in that, The adjustable guide vane further includes a drive arm, a linkage ring and a rocker arm. The actuator drives the drive arm, the drive arm pushes the linkage ring to rotate around the engine axis, the linkage ring drives the rocker arm to rotate around the stator vane rotation axis, and the rocker arm drives the stator vane to rotate around its rotation axis.

8. An adjustable guide vane calibration system, the adjustable guide vane comprising an actuator and a stator vane, wherein the actuator drives the stator vane to rotate, characterized in that, The adjustable guide vane calibration system includes: an actuator pressure equipment, an adjustable guide vane, an angle sensor, a displacement sensor, a data acquisition card and an upper computer; the actuator pressure equipment is used to drive the actuator to move at a first speed, the angle sensor is used to detect the rotation angle of the stator vane and send the rotation angle signal to the data acquisition card, and / or the displacement sensor is used to detect the displacement of the actuator and send the displacement signal to the data acquisition card. The data acquisition card is used to collect the rotation angle signal and the displacement signal at a first sampling frequency and send the rotation angle signal and the displacement signal to the upper computer. The upper computer respectively fits a rotation angle signal-time curve and a displacement signal-time curve, converts the rotation angle signal value and the displacement signal value into a vane angle value and an actuator displacement value respectively, and interpolates the displacement value of the actuator corresponding to the calibration target angle of the adjustable guide vane through the fitting curve.

9. The adjustable guide vane calibration system according to claim 8, wherein The adjustable guide vane further includes a drive arm, a linkage ring and a rocker arm. The actuator drives the drive arm, the drive arm pushes the linkage ring to rotate around the engine axis, the linkage ring drives the rocker arm to rotate around the stator vane rotation axis, and the rocker arm drives the stator vane to rotate around its rotation axis.

10. The adjustable guide vane calibration system according to claim 8, wherein The value range of the first speed is: 0 to 100 mm / s.

11. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by a processor, it implements the adjustable guide vane calibration method according to any one of claims 1 to 7.

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