Method and system for adjusting angle of adjustable guide vane of gas compressor under sand and dust erosion condition
By adjusting the angle of the compressor's adjustable guide vanes under sand and dust erosion conditions, and utilizing PI control algorithms and current control of electro-hydraulic servo valves, closed-loop control of the compressor's adjustable guide vanes is achieved. This solves the problem of engine performance deviation caused by sand and dust erosion, and improves the overall performance and combat capability of the aircraft.
Patent Information
- Application Number
- CN202511347546.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-19
- Publication Date
- 2025-11-21
AI Technical Summary
Under sand and dust erosion conditions, the adjustable guide vanes of the compressor may deviate from their designed angle due to the increased load on the actuator cylinder. This causes the high-pressure conversion speed to increase and the compressor efficiency to decrease, which in turn leads to the overall performance deviating from the design state, resulting in problems such as increased exhaust temperature, increased fuel consumption, and slow engine acceleration.
By obtaining the relationship between the initial compressor pressure ratio and the converted speed based on the engine's first ground test, the control current of the actuator electro-hydraulic servo valve is calculated using the PI control algorithm. The current angle of the compressor's adjustable guide vanes is adjusted to make its actual pressure ratio consistent with the initial pressure ratio, thus achieving closed-loop control.
It effectively solved the problems of increased exhaust temperature, increased fuel consumption, and slow acceleration of the engine under sand and dust erosion, maintained the aircraft's cruise time, loiter time, and maneuverability, and avoided a reduction in overall aircraft performance.
Smart Images
Figure CN120990913A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of adjustable guide vane angle control technology for air compressors, specifically to a method and system for adjusting the angle of adjustable guide vanes of air compressors under sand and dust erosion conditions. Background Technology
[0002] When military aircraft perform missions in harsh environments (such as deserts, areas with dense smoke and fog), their engines often ingest sand and dust particles stirred up by the wind, aircraft contrails, or floating in the air. When this sand and dust enter the compressor's adjustable guide vane bushings, it increases the resistance of the adjustment mechanism, which in turn increases the load on the actuator, causing the compressor's adjustable guide vanes to close. In the design of aero-engines, compressor adjustable guide vanes are designed with an adjustable angle, closing at low engine speeds and opening at high engine speeds to match the intake airflow.
[0003] In existing technologies, the adjustable guide vane angle of the compressor is typically adjusted based on the relative rotational speed of the high-pressure rotor to the compressor inlet, such as... Figure 1 As shown. Where, a c For the adjustable guide vane angle of the compressor; n 2R25 To calculate the relative speed of the high-pressure rotor to the compressor inlet, n 2R25 =n2×(T 25，d / T 25 ) ^0.5 Where n2 is the relative physical speed of the high-voltage rotor, and T 25，d For the design point compressor inlet temperature, T 25 This represents the current compressor inlet temperature. For the above scheme, the adjustable guide vane angle of the compressor is generally given by the theoretical line or adjusted near the theoretical line, and the adjustment process must not exceed the upper and lower boundaries.
[0004] The theoretical line is a theoretical scheme designed based on the overall performance matching of the engine. In actual use, the overall performance of the engine may deviate from the theoretical design due to factors such as component processing errors and assembly errors. In this case, the actual performance deviation from the design can be made up by adjusting the angle of the adjustable guide vanes of the compressor. However, excessive adjustment of the angle of the adjustable guide vanes of the compressor will significantly reduce the compressor efficiency. Therefore, upper and lower boundaries are set to avoid a significant reduction in compressor efficiency.
[0005] Under sand and dust erosion conditions, the load on the compressor regulating mechanism actuator cylinder will gradually increase, causing the actual control angle of the compressor adjustable guide vanes to deviate from the displayed angle. This leads to an increase in the high-pressure converted speed and a decrease in compressor efficiency, causing a deviation in the overall machine matching, resulting in an increase in the overall machine exhaust temperature and fuel consumption. Summary of the Invention
[0006] The purpose of this invention is to provide a method for adjusting the angle of the adjustable guide vanes of a compressor under sand and dust erosion conditions, so as to solve the problem in the prior art where the load force of the engine actuator gradually increases under sand and dust erosion conditions, causing the adjustable guide vanes of the compressor to deviate.
[0007] To address the aforementioned problems, this invention proposes a method for adjusting the angle of adjustable guide vanes in a compressor under sand and dust erosion conditions. The technical solution adopted is as follows: A method for adjusting the angle of adjustable guide vanes in a compressor under sand and dust erosion conditions includes the following steps: Step S1: Based on the engine's first ground test, adjust the display angle of the compressor's adjustable guide vanes according to the initial compressor conversion speed to obtain the relationship between the initial compressor pressure ratio and the initial compressor conversion speed. Step S2: When the engine starts again, the current initial compressor pressure ratio is obtained based on the relationship between the initial compressor pressure ratio and the initial compressor conversion speed, and based on the current initial compressor conversion speed. Step S3: Under sand and dust erosion conditions, by adjusting the current angle of the compressor's adjustable guide vanes, the current actual compressor pressure ratio is made consistent with the corresponding initial compressor pressure ratio, thereby achieving closed-loop control of the compressor's adjustable guide vane angle.
[0008] Further, in step S3, the step of adjusting the current angle of the compressor's adjustable guide vanes to match the current actual compressor pressure ratio with the corresponding initial compressor pressure ratio under sand and dust erosion conditions, thereby achieving closed-loop control of the compressor's adjustable guide vane angle, includes: First, under sand and dust erosion conditions, the compressor pressure ratio deviation is obtained based on the current initial compressor converted speed and the current initial compressor pressure ratio. Secondly, the control current of the electro-hydraulic servo valve of the compressor's adjustable guide vane is calculated using the PI control algorithm; Finally, by controlling the control current of the electro-hydraulic servo valve of the compressor's adjustable guide vane actuator, the compressor pressure ratio deviation is eliminated, so that the current actual compressor pressure ratio is consistent with the corresponding initial compressor pressure ratio.
[0009] Further, the step of obtaining the compressor pressure ratio deviation based on the current initial compressor converted speed and the current initial compressor pressure ratio includes: Let the current actual compressor pressure ratio be pia, and the current corresponding initial compressor equivalent speed be n. Based on the relationship between the initial compressor pressure ratio and the initial compressor equivalent speed, the current corresponding initial compressor pressure ratio is obtained as a. Then, the compressor pressure ratio deviation is the difference between the current actual compressor pressure ratio pia and the current corresponding initial compressor pressure ratio a.
[0010] Furthermore, the control current of the electro-hydraulic servo valve of the actuator is shown in Equation 1: Formula 1, in, For proportional control parameters, To balance the current of electro-hydraulic servo valves, For integral control parameters, This indicates the integration process.
[0011] Furthermore, between steps S1 and S2, the method for adjusting the angle of the compressor's adjustable guide vanes under sand and dust erosion conditions further includes: The relationship between the initial compressor pressure ratio and the initial compressor equivalent speed is stored in the engine controller.
[0012] Furthermore, the step of controlling the control current of the electro-hydraulic servo valve of the compressor's adjustable guide vanes to eliminate compressor pressure ratio deviation, ensuring that the current actual compressor pressure ratio matches the corresponding initial compressor pressure ratio, includes: The engine controller outputs current to the electro-hydraulic servo valve of the actuator to control the actuator, which in turn controls the control current of the electro-hydraulic servo valve of the compressor's adjustable guide vanes, eliminating compressor pressure ratio deviation and ensuring that the current actual compressor pressure ratio is consistent with the corresponding initial compressor pressure ratio.
[0013] Furthermore, in step S1, the displayed angle of the compressor adjustable guide vane is the actual angle of the compressor adjustable guide vane when the engine is in a new engine state.
[0014] Further, in step S1, the initial compressor pressure ratio is the ratio of the initial compressor outlet pressure to the initial compressor inlet pressure.
[0015] The present invention also provides a system for performing the above-described method for adjusting the angle of adjustable guide vanes of a compressor under sand and dust erosion conditions, comprising: The module for obtaining the relationship between compressor pressure ratio and calculated speed is used for the first ground test of the engine. It adjusts the display angle of the adjustable guide vanes of the compressor according to the initial compressor calculated speed to obtain the relationship between the initial compressor pressure ratio and the initial compressor calculated speed. The current initial compressor pressure ratio acquisition module is used to obtain the current initial compressor pressure ratio based on the relationship between the initial compressor pressure ratio and the initial compressor conversion speed when the engine starts working again. The closed-loop control module for the adjustable guide vanes of the compressor is used to adjust the current angle of the adjustable guide vanes of the compressor under sand and dust erosion conditions, so that the current actual compressor pressure ratio is consistent with the corresponding initial compressor pressure ratio, thereby realizing closed-loop control of the angle of the adjustable guide vanes of the compressor.
[0016] Furthermore, the regulating system also includes an engine controller, which stores the relationship between the initial compressor pressure ratio and the initial compressor equivalent speed.
[0017] Beneficial effects: This invention is an improved invention. It addresses the common practice in existing compressor adjustable guide vane angle adjustment technologies that calculate speed n based on high pressure relative to the rotational speed. 2r25 Adjustments were made, which led to a gradual increase in the load on the actuator under sand and dust erosion conditions, causing the compressor adjustable guide vanes to deviate from their original position. Based on the relationship between the initial compressor pressure ratio and the initial compressor equivalent speed, under sand and dust erosion conditions, the current angle of the compressor adjustable guide vanes was adjusted to make the current actual compressor pressure ratio consistent with the corresponding initial compressor pressure ratio. This ensured that the angle of the compressor adjustable guide vanes did not deviate from the design state, thereby achieving closed-loop control of the compressor adjustable guide vanes.
[0018] Under sand and dust erosion conditions, the deflection of the compressor's adjustable guide vanes typically leads to deviations in overall engine performance from its design specifications, such as increased exhaust temperature, increased fuel consumption, and slower acceleration. When the engine exhaust temperature reaches its limit, the engine speed stops increasing, resulting in reduced engine thrust, impacting aircraft maneuverability and takeoff distance, and potentially preventing the aircraft from reaching the right boundary of its flight envelope. Increased fuel consumption affects loiter time and cruise range, preventing the aircraft from completing its designated flight mission. Slower engine acceleration severely impacts aircraft maneuverability, reducing its air combat capability and close-range deterrence. In summary, the closed-loop control of the compressor's adjustable guide vane angle described in this application effectively solves the problems of increased engine exhaust temperature, increased fuel consumption, and slower acceleration under sand and dust erosion conditions, preventing a decline in aircraft combat performance and effectively maintaining important technical indicators such as cruise time, loiter time, and maneuverability.
[0019] In step S3, under sand and dust erosion conditions, adjusting the current angle of the compressor's adjustable guide vanes to make the current actual compressor pressure ratio consistent with the corresponding initial compressor pressure ratio, thereby achieving closed-loop control of the compressor's adjustable guide vane angle, includes: First, under sand and dust erosion conditions, the compressor pressure ratio deviation is obtained based on the current initial compressor converted speed and the current initial compressor pressure ratio. Secondly, the control current of the electro-hydraulic servo valve of the compressor's adjustable guide vane is calculated using the PI control algorithm; Finally, by controlling the control current of the electro-hydraulic servo valve of the compressor's adjustable guide vane actuator, the compressor pressure ratio deviation is eliminated, ensuring that the current actual compressor pressure ratio matches the corresponding initial compressor pressure ratio. This method can accurately achieve closed-loop control of the compressor's adjustable guide vane, further guaranteeing that the angle of the compressor's adjustable guide vane does not deviate from the design state. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the adjustable guide vane angle adjustment in an existing compressor technology; Figure 2 A schematic flowchart of the method for adjusting the angle of the adjustable guide vanes of a compressor under sand and dust erosion conditions according to the present invention. Detailed Implementation
[0021] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.
[0022] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.
[0023] The following describes, with reference to the accompanying drawings, a method and system for adjusting the angle of the adjustable guide vanes of a compressor under sand and dust erosion conditions, according to embodiments of this application.
[0024] When the adjustable guide vane angle of the compressor remains constant, there is a one-to-one correspondence between the compressor's equivalent speed and its pressure ratio. When the adjustable guide vane angle deviates, the compressor inlet airflow decreases and the pressure ratio increases under the same equivalent speed condition. Therefore, given the compressor's equivalent speed and the compressor pressure ratio under design conditions, the adjustable guide vane angle can be kept within the design range.
[0025] Based on the above working principle, the following is combined with Figure 2 This application provides a detailed description of the method for adjusting the angle of the adjustable guide vanes of a compressor under sand and dust erosion conditions.
[0026] Step S1: Based on the engine's first ground test, the displayed angle of the compressor's adjustable guide vanes is adjusted according to the initial compressor equivalent speed to obtain the relationship between the initial compressor pressure ratio and the initial compressor equivalent speed. Here, the displayed angle of the compressor's adjustable guide vanes is the actual angle of the compressor's adjustable guide vanes when the engine is in its new engine state. The initial compressor pressure ratio is the ratio of the initial compressor outlet pressure to the initial compressor inlet pressure.
[0027] Step S2: When the engine starts again, the initial compressor pressure ratio is obtained based on the relationship between the initial compressor pressure ratio and the initial compressor conversion speed, and based on the current initial compressor conversion speed.
[0028] Step S3: Under sand and dust erosion conditions, by adjusting the current angle of the compressor's adjustable guide vanes, the current actual compressor pressure ratio is made consistent with the corresponding initial compressor pressure ratio, thereby achieving closed-loop control of the compressor's adjustable guide vane angle.
[0029] Specifically, under sand and dust erosion conditions, by adjusting the current angle of the compressor's adjustable guide vanes, the current actual compressor pressure ratio is made consistent with the corresponding initial compressor pressure ratio, thus achieving closed-loop control of the compressor's adjustable guide vane angle, including: First, under sand and dust erosion conditions, the compressor pressure ratio deviation is obtained based on the current initial compressor converted speed and the current initial compressor pressure ratio.
[0030] Secondly, the control current of the electro-hydraulic servo valve of the compressor's adjustable guide vane is calculated using the PI control algorithm; here, the control current of the electro-hydraulic servo valve is shown in Equation 1: Formula 1, in, For proportional control parameters, To balance the current of electro-hydraulic servo valves, For integral control parameters, This represents the integral element, where the proportional control parameters, the electro-hydraulic servo valve balancing current, and the integral control parameters are all constants.
[0031] Finally, by controlling the control current of the electro-hydraulic servo valve of the compressor's adjustable guide vane actuator, the compressor pressure ratio deviation is eliminated, so that the current actual compressor pressure ratio is consistent with the corresponding initial compressor pressure ratio.
[0032] Specifically, the compressor pressure ratio deviation is obtained based on the current initial compressor converted speed and the current initial compressor pressure ratio. This includes: assuming the current actual compressor pressure ratio is pia and the current initial compressor converted speed is n, the current initial compressor pressure ratio is obtained as a based on the relationship between the initial compressor pressure ratio and the initial compressor converted speed. Then, the compressor pressure ratio deviation is the difference between the current actual compressor pressure ratio pia and the current initial compressor pressure ratio a.
[0033] In this embodiment, between steps S1 and S2, the method for adjusting the adjustable guide vane angle of the compressor under sand and dust erosion conditions further includes: storing the relationship between the initial compressor pressure ratio and the initial compressor equivalent speed in the engine controller. Here, the relationship between the initial compressor pressure ratio and the initial compressor equivalent speed is used as a control adjustment parameter in the engine controller.
[0034] Based on the engine controller, the compressor pressure ratio deviation is eliminated by controlling the control current of the electro-hydraulic servo valve of the compressor adjustable guide vane actuator, so that the current actual compressor pressure ratio is consistent with the current corresponding initial compressor pressure ratio. This includes: outputting current to the actuator electro-hydraulic servo valve through the engine controller to control the actuator, and then controlling the control current of the actuator electro-hydraulic servo valve of the compressor adjustable guide vane actuator, thereby eliminating the compressor pressure ratio deviation and making the current actual compressor pressure ratio consistent with the current corresponding initial compressor pressure ratio.
[0035] Meanwhile, based on the aforementioned relationship between the initial compressor pressure ratio and the initial compressor equivalent speed, which is used as a control parameter in the engine controller, the method for adjusting the adjustable guide vane angle of the compressor under sand and dust erosion conditions specifically includes: First, based on the engine's first ground test, the display angle of the compressor's adjustable guide vanes was adjusted according to the initial compressor conversion speed to obtain the relationship between the initial compressor pressure ratio and the initial compressor conversion speed. Secondly, when the engine starts again, it finds the current initial compressor pressure ratio based on the relationship between the initial compressor pressure ratio and the initial compressor conversion speed stored in the controller, and based on the current initial compressor conversion speed. Next, under the condition of sand and dust erosion, assuming the current actual compressor pressure ratio is pia and the measured current corresponding initial compressor conversion speed is n, the current corresponding initial compressor pressure ratio a in the controller is read out. Then, the compressor pressure ratio deviation Δ = pic - a is calculated based on the difference between the current actual compressor pressure ratio pia and the current corresponding initial compressor pressure ratio a. Then, the control current of the electro-hydraulic servo valve of the compressor adjustable guide vane is calculated by the PI control algorithm; Finally, the engine controller outputs current to the electro-hydraulic servo valve of the actuator to control the actuator, which in turn controls the control current of the electro-hydraulic servo valve of the compressor adjustable guide vane, eliminating the compressor pressure ratio deviation Δ, so that the current actual compressor pressure ratio pia is consistent with the current corresponding initial compressor pressure ratio a.
[0036] This application also provides a system for performing the above-described method for adjusting the angle of adjustable guide vanes of a compressor under sand and dust erosion conditions, comprising: The module for obtaining the relationship between compressor pressure ratio and calculated speed is used for the first ground test of the engine. It adjusts the display angle of the adjustable guide vanes of the compressor according to the initial compressor calculated speed to obtain the relationship between the initial compressor pressure ratio and the initial compressor calculated speed. The current initial compressor pressure ratio acquisition module is used to obtain the current initial compressor pressure ratio based on the relationship between the initial compressor pressure ratio and the initial compressor conversion speed when the engine starts working again. The closed-loop control module for the adjustable guide vanes of the compressor is used to adjust the current angle of the adjustable guide vanes of the compressor under sand and dust erosion conditions, so that the current actual compressor pressure ratio is consistent with the corresponding initial compressor pressure ratio, thereby realizing closed-loop control of the angle of the adjustable guide vanes of the compressor.
[0037] The regulating system also includes an engine controller, which stores the relationship between the initial compressor pressure ratio and the initial compressor equivalent speed. This data is used to retrieve the initial compressor pressure ratio and the initial compressor equivalent speed from the engine controller when the engine is running again.
[0038] Here, those skilled in the art will understand that the specific method for adjusting the angle of the compressor's adjustable guide vanes under sand and dust erosion conditions has been referenced above. Figure 2 The method for adjusting the angle of the compressor's adjustable guide vanes under sand and dust erosion conditions has been described in detail, therefore, its repeated description will be omitted.
[0039] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. The scope of patent protection of the present invention shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present invention shall also be included within the scope of protection of the present invention.
Claims
1. A method for adjusting the angle of adjustable guide vanes of a compressor under sand and dust erosion conditions, characterized in that, Includes the following steps: Step S1: Based on the engine's first ground test, adjust the display angle of the compressor's adjustable guide vanes according to the initial compressor conversion speed to obtain the relationship between the initial compressor pressure ratio and the initial compressor conversion speed. Step S2: When the engine starts again, the current initial compressor pressure ratio is obtained based on the relationship between the initial compressor pressure ratio and the initial compressor conversion speed, and based on the current initial compressor conversion speed. Step S3: Under sand and dust erosion conditions, by adjusting the current angle of the compressor's adjustable guide vanes, the current actual compressor pressure ratio is made consistent with the corresponding initial compressor pressure ratio, thereby achieving closed-loop control of the compressor's adjustable guide vane angle.
2. The method for adjusting the angle of the adjustable guide vanes of a compressor under sand and dust erosion conditions according to claim 1, characterized in that, In step S3, under sand and dust erosion conditions, adjusting the current angle of the compressor's adjustable guide vanes to make the current actual compressor pressure ratio consistent with the corresponding initial compressor pressure ratio, thereby achieving closed-loop control of the compressor's adjustable guide vane angle, includes: First, under sand and dust erosion conditions, the compressor pressure ratio deviation is obtained based on the current initial compressor converted speed and the current initial compressor pressure ratio. Secondly, the control current of the electro-hydraulic servo valve of the compressor's adjustable guide vane is calculated using the PI control algorithm; Finally, by controlling the control current of the electro-hydraulic servo valve of the compressor's adjustable guide vane actuator, the compressor pressure ratio deviation is eliminated, so that the current actual compressor pressure ratio is consistent with the corresponding initial compressor pressure ratio.
3. The method for adjusting the angle of the adjustable guide vanes of a compressor under sand and dust erosion conditions according to claim 2, characterized in that, The step of obtaining the compressor pressure ratio deviation based on the current initial compressor converted speed and the current initial compressor pressure ratio includes: Let the current actual compressor pressure ratio be pia, and the current corresponding initial compressor equivalent speed be n. Based on the relationship between the initial compressor pressure ratio and the initial compressor equivalent speed, the current corresponding initial compressor pressure ratio is obtained as a. Then, the compressor pressure ratio deviation is the difference between the current actual compressor pressure ratio pia and the current corresponding initial compressor pressure ratio a.
4. The method for adjusting the angle of the adjustable guide vanes of a compressor under sand and dust erosion conditions according to claim 2, characterized in that, The control current of the electro-hydraulic servo valve of the actuator is shown in Equation 1: Formula 1, in, For proportional control parameters, To balance the current of electro-hydraulic servo valves, For integral control parameters, This indicates the integration process.
5. The method for adjusting the angle of the adjustable guide vanes of a compressor under sand and dust erosion conditions according to claim 2, characterized in that, Between steps S1 and S2, the method for adjusting the angle of the compressor's adjustable guide vanes under sand and dust erosion conditions further includes: The relationship between the initial compressor pressure ratio and the initial compressor equivalent speed is stored in the engine controller.
6. The method for adjusting the angle of the adjustable guide vanes of a compressor under sand and dust erosion conditions according to claim 5, characterized in that, The step of controlling the control current of the electro-hydraulic servo valve of the compressor's adjustable guide vanes to eliminate compressor pressure ratio deviation and ensure that the current actual compressor pressure ratio matches the corresponding initial compressor pressure ratio includes: The engine controller outputs current to the electro-hydraulic servo valve of the actuator to control the actuator, which in turn controls the control current of the electro-hydraulic servo valve of the compressor's adjustable guide vanes, eliminating compressor pressure ratio deviation and ensuring that the current actual compressor pressure ratio is consistent with the corresponding initial compressor pressure ratio.
7. The method for adjusting the angle of the adjustable guide vanes of a compressor under sand and dust erosion conditions according to claim 1, characterized in that, In step S1, the displayed angle of the compressor adjustable guide vane is the actual angle of the compressor adjustable guide vane when the engine is in a new engine state.
8. The method for adjusting the angle of the adjustable guide vanes of a compressor under sand and dust erosion conditions according to claim 1, characterized in that, In step S1, the initial compressor pressure ratio is the ratio of the initial compressor outlet pressure to the initial compressor inlet pressure.
9. A system for performing the method for adjusting the angle of adjustable guide vanes of a compressor under sand and dust erosion conditions as described in any one of claims 1-8, characterized in that, include: The module for obtaining the relationship between compressor pressure ratio and calculated speed is used for the first ground test of the engine. It adjusts the display angle of the adjustable guide vanes of the compressor according to the initial compressor calculated speed to obtain the relationship between the initial compressor pressure ratio and the initial compressor calculated speed. The current initial compressor pressure ratio acquisition module is used to obtain the current initial compressor pressure ratio based on the relationship between the initial compressor pressure ratio and the initial compressor conversion speed when the engine starts working again. The closed-loop control module for the adjustable guide vanes of the compressor is used to adjust the current angle of the adjustable guide vanes of the compressor under sand and dust erosion conditions, so that the current actual compressor pressure ratio is consistent with the corresponding initial compressor pressure ratio, thereby realizing closed-loop control of the angle of the adjustable guide vanes of the compressor.
10. The compressor adjustable guide vane angle adjustment system under sand and dust erosion conditions according to claim 9, characterized in that, The regulation system also includes an engine controller, which stores the relationship between the initial compressor pressure ratio and the initial compressor equivalent speed.