Gas compressor blade based on distributed self-excitation adjustable fluid oscillator

Abstract

The invention discloses a gas compressor blade based on a distributed self-excitation adjustable fluid oscillator, and belongs to the technical field of aero-engines and gas turbines. Comprising a gas compressor blade body, a distributed self-excitation fluid oscillator and a parameter adjusting device based on piezoelectric ceramics. The multiple self-excitation fluid oscillators are arranged in the compressor blade body, each self-excitation fluid oscillator comprises a flow channel, an inlet hole, an outlet hole, a resonant cavity and a feedback channel, the resonant cavity communicates with the flow channel and the feedback channel, the outlet hole of the flow channel and an adjusting outlet of the resonant cavity are formed in the suction face, and the inlet hole of the resonant cavity is formed in the pressure face. Self-excitation is achieved through the pressure difference between the pressure surface and the suction surface of the blade, the flow of the resonant cavity is finely adjusted through the piezoelectric ceramic piece, the channel state and the outlet shape are fed back, the strong coupling limitation of the flow and the frequency of a traditional fluid oscillator is broken through, and autonomous control and three-in-one flexible and changeable control of different flows and frequencies of all outlets are achieved; the device has the advantages of simple structure, low energy consumption, high reliability and the like.

Description

Technical Field

[0001] The invention relates to a compressor blade based on a distributed self-excited adjustable fluid oscillator, belonging to the technical field of aeroengines and gas turbines. Background Art

[0002] The compressor is a core component of aircraft engines and gas turbines, and its performance directly impacts the efficiency, power, and stability of the entire engine. The three-dimensional flow within a compressor is extremely complex, manifesting itself in several key aspects. First, as air flows through a series of blade rows within the compressor, it generates complex vortex motion, boundary layer separation, and secondary flow. These flow phenomena interact and influence each other, forming a highly nonlinear flow field distribution. Second, compressor operating conditions are extremely variable. During different flight phases (such as takeoff, cruise, and landing) or under varying load conditions, parameters such as compressor speed, inlet and outlet pressures, and flow rate can vary significantly, leading to drastic changes in the internal flow field characteristics. For example, at high speeds, the inertial force of the airflow increases, making shock waves more likely to occur; at low speeds, the airflow energy is lower, making boundary layer separation more likely. These complex and variable three-dimensional flow characteristics place extremely high demands on compressor flow control technology, leading to an increasing demand for distributed and adjustable flow control methods. Because control at a single location is difficult to cover the key areas of the entire flow field, and control with fixed parameters cannot adapt to dynamic changes in working conditions, effective control of complex flow fields can only be achieved through distributed arrangement of control devices and flexible adjustment of parameters.

[0003] Currently, a variety of technologies are available for controlling flow within compressors. Traditional passive control methods, such as blade shape optimization, have limited effectiveness in improving flow and are difficult to adapt to diverse operating conditions. Active control methods, some of which utilize externally driven actuators, are complex, energy-intensive, and lack reliability in the harsh high-temperature, high-pressure environments of aircraft engines and gas turbines.

[0004] Fluid oscillators, as promising flow control devices, have attracted considerable attention for their application in compressor blades. However, existing traditional self-excited fluid oscillators have significant limitations. Most traditional self-excited fluid oscillators lack adjustable functionality. Their excitation angle, frequency, and other parameters are fixed upon design and cannot be adjusted to changes in the compressor's internal flow field. This results in a sharp decline in control effectiveness when operating conditions change. Even for a few self-excited fluid oscillators that are designed with adjustable functionality, the adjustment range is very limited. For example, the frequency adjustment range is often limited to a small range, which cannot meet the control requirements of the compressor over a wide operating range. The excitation angle is also often adjusted to a limited number of settings, making continuous and precise adjustment difficult, and unable to accurately control flow separation at different locations. Furthermore, these adjustable fluid oscillators generally suffer from the problem of strong coupling between flow rate and frequency. That is, when the flow rate is changed, the frequency will undergo uncontrollable changes, and vice versa. This significantly limits their control flexibility and precision, making it difficult to effectively control the complex three-dimensional flow in the compressor.

[0005] Existing fluid oscillators used on compressor blades mostly require an external gas source or power source to provide excitation energy, failing to fully utilize the compressor's inherent flow field characteristics. Furthermore, their installation location and inlet and outlet configurations are not rational, with inlet and outlet angles and axial positions not falling within the appropriate range, making it difficult to precisely target the suction side flow separation region. Furthermore, the adjustment of the excitation parameters is not flexible and precise, resulting in a strong coupling between flow rate and frequency. This makes it impossible to achieve autonomous control of different flow rates and frequencies at each outlet, making it difficult to effectively dynamically control the compressor's internal flow field in real-time. This results in unsatisfactory flow control.

[0006] Therefore, it is urgent to propose a compressor blade based on a distributed self-excited adjustable fluid oscillator to solve the above technical problems. Summary of the Invention

[0007] The present invention aims to provide a compressor blade based on a distributed, self-excited, adjustable fluid oscillator. This design addresses existing compressor flow control technologies, including complex structure, high energy consumption, poor control effectiveness, strong coupling between flow and frequency, and unreasonable inlet / outlet angles and positions. By placing the self-excited fluid oscillator within the blade, with the inlet opening on the pressure side and the outlet opening in the flow separation region on the suction side, and by limiting the inlet / outlet angle range, the blade utilizes the pressure difference between the pressure and suction sides to achieve self-excitation. Furthermore, piezoelectric ceramics are used to fine-tune the shape of the feedback channel outlet, thereby adjusting the resonant cavity flow rate. This overcomes the limitations of strong coupling between flow and frequency, enabling autonomous control of different flow rates and frequencies at each outlet and three-in-one, flexible and variable control. This achieves efficient, self-excited, controllable control of the three-dimensional flow within the compressor, particularly in the flow separation region on the suction side, improving the performance of aircraft engines and gas turbines, and providing more feasible control strategies and technical approaches for active flow control. A brief overview of the present invention is provided below to provide a basic understanding of certain aspects of the invention. It should be understood that this overview is not an exhaustive overview of the invention. It is not intended to identify key or critical parts of the present invention, nor is it intended to limit the scope of the present invention.

[0008] The technical solution of the present invention:

[0009] A compressor blade based on a distributed self-excited adjustable fluid oscillator comprises a compressor blade body having a pressure side and a suction side, a plurality of self-excited fluid oscillators, and a piezoelectric ceramic-based parameter adjustment device corresponding to each self-excited fluid oscillator. The plurality of self-excited fluid oscillators are disposed within the compressor blade body. The self-excited fluid oscillators comprise a flow channel, an inlet hole, an outlet hole, a resonance cavity, and a feedback channel. The resonance cavity is respectively connected to the flow channel and the feedback channel. The outlet hole of the flow channel is disposed in a flow separation region on the suction side. The inlet hole of the self-excited fluid oscillator is disposed on the pressure side. The adjustment outlet of the resonance cavity is disposed on the suction side.

[0010] The piezoelectric ceramic-based parameter adjustment device includes a piezoelectric ceramic piece and an external control circuit. The piezoelectric ceramic piece is installed on the inner wall of the adjustment outlet or outlet hole connected to the suction surface. The external control circuit is electrically connected to the piezoelectric ceramic piece and is used to apply electric field signals of different intensities and frequencies to the piezoelectric ceramic piece, causing the piezoelectric ceramic piece to deform to fine-tune the internal structure of the self-excited fluid oscillator, including adjusting the flow rate and outlet shape of one side of the resonant cavity, thereby changing the feedback mechanism.

[0011] Preferably, the response time of the piezoelectric ceramic step response test of the piezoelectric ceramic piece is ≤0.5ms, and the cross-sectional area of ​​the feedback channel is dynamically adjusted by voltage input.

[0012] Preferably: the angle α between the inlet hole angle on the pressure surface and the tangential direction of the position is 10-30 degrees, the angle β between the adjustment outlet angle on the suction surface and the tangential direction of the position is 85-95 degrees, and the angle between the outlet hole angle on the suction surface and the tangential direction of the position is 15-30 degrees.

[0013] Preferably, the compressor blade body is made of high-temperature resistant and high-strength aviation material.

[0014] Preferably, the distribution density and position of the plurality of self-excited fluid oscillators inside the compressor blade body are determined according to the flow field characteristics inside the compressor and the flow separation area distribution on the suction surface.

[0015] The present invention has the following beneficial effects:

[0016] 1. The present invention's self-excitation is energy-efficient and precisely targeted: The fluid oscillator self-excites by utilizing the pressure difference between the pressure and suction sides of the blade, eliminating the need for external energy. This reduces energy consumption, simplifies the structure, and improves reliability in the harsh environments of aircraft engines and gas turbines. Furthermore, the inlet port is located on the pressure side, while the outlet port is located in the flow separation area on the suction side. The inlet and outlet angles are optimized within the ranges of 10-30 degrees and 85-95 degrees, respectively. This allows the jet to precisely impact the target area, significantly enhancing flow control.

[0017] 2. The present invention breaks through coupling limitations and offers flexible control: By adjusting the flow rate of one side's resonant cavity through micro-deformation of the piezoelectric ceramic, the present invention breaks through the limitation of strong coupling between flow rate and frequency of traditional fluid oscillators and realizes autonomous control of different flow rates and different frequencies at each outlet of the exciter. The response time of the piezoelectric ceramic step response test is ≤0.5ms, and the cross-sectional area of ​​the feedback channel (0.1-0.8mm) can be dynamically adjusted through voltage input (0-150V), providing more feasible control strategies and technical routes for active flow control.

[0018] 3. The present invention adopts distributed and efficient control: the distributed arrangement of fluid oscillators is reasonably distributed inside the blades. Combined with precise inlet and outlet position settings and optimized angle range, it can fully cover the key areas of the internal flow field of the compressor, especially the suction surface flow separation area. Combined with adjustable excitation parameters, it can efficiently control the flow at different positions and under different operating conditions, effectively suppress flow separation, surge and other phenomena, and significantly improve the aerodynamic performance of the compressor.

[0019] 4. The present invention boasts a reliable structure: The fluidic oscillator is located within the blade, resulting in a compact overall design that avoids complex external connections and drive components. This design offers high stability and durability in the high-temperature, high-pressure, and high-speed environments of aircraft engines and gas turbines. Furthermore, the coupling design between the blade and the fluidic oscillator addresses the required angular range, further ensuring structural reliability and consistent control. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional diagram of a compressor blade based on a distributed self-excited adjustable fluid oscillator;

[0021] Figure 2 It is a schematic structural diagram of the pressure surface and the suction surface of the present invention;

[0022] Figure 3 This is a diagram of the matching installation of compressor blades based on a distributed self-excited adjustable fluid oscillator;

[0023] Figure 4 It is a structural schematic diagram of the self-excited fluid oscillator of the present invention;

[0024] Figure 5 This is a diagram of the coordinated installation of the compressor blade body and the self-excited fluid oscillator of the present invention.

[0025] In the figure: 1- compressor blade body, 2- self-excited fluid oscillator, 3- piezoelectric ceramic plate, 4- flow channel, 5- inlet hole, 6- outlet hole, 7- pressure surface, 8- suction surface, 9- resonance cavity, 10- feedback channel, 11- regulating outlet. DETAILED DESCRIPTION

[0026] To make the objectives, technical solutions, and advantages of the present invention more clearly apparent, the present invention is described below using specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are merely illustrative and are not intended to limit the scope of the present invention. In addition, in the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessary confusion of the concepts of the present invention.

[0027] The connections referred to in this invention are categorized as fixed and removable. Fixed connections (i.e., non-removable connections) include, but are not limited to, conventional fixed connection methods such as hemming, rivet connections, adhesive connections, and welding. Removable connections include, but are not limited to, conventional removable methods such as threaded connections, snap connections, pin connections, and hinge connections. When a specific connection method is not explicitly specified, it is assumed that at least one existing connection method can achieve the desired function. Persons skilled in the art may select the connection as needed. For example, welding may be selected for fixed connections, and hinges may be selected for removable connections.

[0028] Specific implementation method 1: Combination Figure 1-Figure 5 This embodiment is described. A compressor blade based on a distributed self-excited adjustable fluid oscillator includes a compressor blade body 1 having a pressure surface 7 and a suction surface 8, a plurality of self-excited fluid oscillators 2, and a piezoelectric ceramic-based parameter adjustment device corresponding to each self-excited fluid oscillator 2. The plurality of self-excited fluid oscillators 2 are disposed within the compressor blade body 1, typically comprising 5 to 8.

[0029] The flow channel of each self-excited fluid oscillator is uniquely designed. Each of the self-excited fluid oscillators 2 includes an independent flow channel 4, an inlet hole 5, an outlet hole 6, a resonance cavity 9 and a feedback channel 10. The resonance cavity 9 is connected to the flow channel 4 and the feedback channel 10 respectively. The outlet hole 6 of the flow channel 4 is opened in the flow separation area of ​​the suction surface 8. The inlet hole 5 of the self-excited fluid oscillator 2 is opened on the pressure surface 7. The adjustment outlet 11 of the resonance cavity 9 is set on the suction surface 8. The structure of the flow channel 4 realizes self-excitation based on the pressure difference between the pressure surface 7 and the suction surface 8.

[0030] Each self-excited fluid oscillator 2 is equipped with a piezoelectric ceramic-based parameter adjustment device. The piezoelectric ceramic-based parameter adjustment device includes a piezoelectric ceramic piece 3 and an external control circuit. The piezoelectric ceramic piece 3 is installed on the inner wall of the adjustment outlet 11 or the outlet hole 6 connected to the suction surface 8. The external control circuit is electrically connected to the piezoelectric ceramic piece 3 and is used to apply electric field signals of different intensities and frequencies to the piezoelectric ceramic piece 3, causing the piezoelectric ceramic piece 3 to deform in order to fine-tune the internal structure of the self-excited fluid oscillator 2, including adjusting the flow rate and outlet shape of the resonance cavity 9 on one side, thereby changing the feedback mechanism, breaking through the limitations of the strong coupling of flow rate and frequency of traditional fluid oscillators, and realizing autonomous control of different flow rates, different frequencies and angles of each outlet of the self-excited fluid oscillator 2 and flexible real-time coordinated control of the three-in-one.

[0031] Specifically, the piezoelectric ceramic piece 3 undergoes a slight deformation under the action of the electric field, and this deformation will fine-tune the outlet flow area of ​​the fluid oscillator feedback channel: the piezoelectric ceramic piece 3 is installed on the adjustment outlet 11, and the shape of the adjustment outlet 11 can be adjusted to change the diffusion range and diffusion angle of the jet, etc.

[0032] Through these fine-tuning techniques, the excitation angle, frequency, and flow rate at each outlet can be altered, and the adjusted angles remain within the effective ranges defined above. For example, when the excitation angle needs to be changed, the deformation of the piezoelectric ceramic 3 causes a slight deflection in the direction of the outlet orifice 6, thereby changing the jet's injection angle and more precisely targeting the flow separation region. When the excitation frequency needs to be adjusted, changes in the flow channel's internal structure affect the fluid's oscillation period within the channel, thereby altering the jet's frequency to accommodate varying degrees of flow separation. By adjusting the resonant cavity flow rate, the flow rate and frequency at each outlet can be independently controlled.

[0033] By sensing the changes in the static pressure of the blades in real time through the flow field, the degree of separation of the current flow field is judged, and then different voltages are input to the piezoelectric ceramic piece 3 to produce different deformations, thereby realizing the change of the state of the adjustment outlet 11 of the flow channel 4 and the outlet shape, so that the flow rate and frequency of each outlet of the self-excited fluid oscillator 2 change.

[0034] The response time of the piezoelectric ceramic step response test of the piezoelectric ceramic piece 3 is ≤0.5ms, and the cross-sectional area (0.1-0.8mm) of the feedback channel 10 is dynamically adjusted by voltage input (0-150V).

[0035] The angle α between the inlet hole 5 on the pressure surface 7 and the tangential direction of the position is 10-30 degrees, the angle β between the adjustment outlet 11 on the suction surface 8 and the tangential direction of the position is 85-95 degrees, and the angle between the outlet hole 6 on the suction surface 8 and the tangential direction of the position is 15-30 degrees. This can greatly improve the working range and flow efficiency of the compressor under the positive angle of attack conditions. This angle range has been verified by a large number of experiments and can ensure a better control effect.

[0036] The flow channel 4 of the self-excited fluid oscillator 2 is caused to flow into the fluid from the inlet hole 5 under the action of the pressure difference between the pressure surface 7 and the suction surface 8, and then an oscillating jet is formed in the flow channel 4 and ejected from the outlet hole 6, thereby achieving self-excitation.

[0037] Specifically, when the compressor is working, a pressure difference is formed between the high-pressure fluid on the pressure surface 7 and the low-pressure fluid on the suction surface 8, prompting the fluid to flow into the flow channel 4 from the inlet hole 5. The special structure inside the flow channel 4 causes the fluid to oscillate, forming a periodic jet, which is then ejected from the outlet hole 6 to the flow separation area of ​​the suction surface 8. No additional external energy is required, which saves energy and has a compact structure.

[0038] The external control circuit is connected to the controller, which receives the speed, inlet and outlet pressures, and flow parameters of the compressor in real time, and sends control instructions to the signal generator according to a preset control strategy.

[0039] The compressor blade body 1 is made of high-temperature resistant, high-strength aviation materials, such as titanium alloys and high-temperature alloys. The compressor blade body is manufactured through precision forging, machining, and other processes, resulting in an integrated molding design. Space is reserved within the compressor blade body 1 for installing the self-excited fluid oscillator 2, including installation locations for the flow channel 4, the resonance cavity 9, and the feedback channel 10. A hole is machined on the pressure surface 7 to match the fluid oscillator flow channel inlet hole 5, ensuring that the angle α between the inlet hole 5 and the tangential direction of the location is 10-30 degrees. A hole is machined on the suction surface 8 in the flow separation area to match the outlet hole, ensuring that the angle β between the outlet hole 6 and the tangential direction of the location is 85-95 degrees, and the angle between the outlet hole 6 and the tangential direction of the location is 15-30 degrees, ensuring that the dimensional accuracy and surface quality meet the design requirements.

[0040] Within the compressor blade body 1, a plurality of self-excited fluid oscillators 2 are distributedly arranged based on the compressor's internal flow field characteristics and the distribution of flow separation zones on the suction surface 8. The distribution density and position of these multiple self-excited fluid oscillators 2 within the compressor blade body 1 are determined based on the compressor's internal flow field characteristics and the distribution of flow separation zones on the suction surface 8. This ensures that they can precisely act on the flow separation zone on the suction surface 8, providing comprehensive and targeted flow control across different regions within the compressor.

[0041] According to the internal flow field characteristics of the compressor and the distribution of the flow separation area on the suction surface, the flow channel 4, resonance cavity 9 and feedback channel 10 structures of each self-excited fluid oscillator 2 are designed. The inlet hole 5 and outlet hole 6 of the flow channel 4 match the hole positions of the pressure surface 7 and suction surface 8 of the compressor blade body 1 respectively, and the inlet and outlet angles are in line with the above-mentioned limited ranges. The main body of the self-excited fluid oscillator 2 is manufactured by precision casting or 3D printing technology, and the material selected is an alloy material that matches the compressor blade body 1 and has good corrosion resistance and high temperature resistance.

[0042] The manufactured self-excited fluid oscillator 2 is installed at a preset position inside the compressor blade body 1, ensuring that the inlet hole 5 of the flow channel 4 is aligned with the hole position of the blade pressure surface 7, and the inlet angle meets the requirements; the outlet hole 6 is aligned with the hole position of the flow separation area of ​​the suction surface 8, and the outlet angle of the resonance cavity 9 and the outlet angle of the outlet hole 6 are adjusted to meet the requirements; the resonance cavity 9 and the feedback channel 10 are accurately positioned and firmly installed through welding, mechanical fixing, etc., to ensure that the fluid can smoothly flow into the pressure surface 7 and be ejected from the flow separation area of ​​the suction surface 8, and flow normally within the resonance cavity 9 and feedback channel 10. During the coupling design process, strictly check whether each angle is within the specified range to ensure that the design requirements are still met after coupling.

[0043] The piezoelectric ceramic sheet 3 is cut and processed into a shape suitable for installation on the inner wall of the adjustable outlet 11, which connects one side of the resonant cavity 9 and the suction surface 8 of the self-excited fluid oscillator. It is fixed in place with a high-temperature resistant adhesive to ensure a secure bond without affecting the normal flow of fluid in the flow channel, resonant cavity, and feedback channel, or the jet from the adjustable outlet 11. Furthermore, deformation of the piezoelectric ceramic sheet 3 allows for fine-tuning of the outlet angle within the aforementioned range.

[0044] Connect an external control circuit, which includes a signal generator, a power amplifier, and a controller. Connect the electrodes of the piezoelectric ceramic 3 to the power amplifier via high-temperature-resistant wires. The power amplifier is connected to the signal generator, which is then connected to the controller. The controller is connected to relevant parts of the compressor via sensors to collect real-time operating parameters such as compressor speed, inlet and outlet pressures, and flow rate.

[0045] Before the compressor blade body 1 is installed on the compressor, the entire system based on the distributed self-excited adjustable fluid oscillator 2 is fully debugged. First, the secure installation of each self-excited fluid oscillator 2 and the unobstructed flow path 4 are checked. Then, different electrical signals are input to the piezoelectric ceramic 3 through the control circuit to detect the deformation of the piezoelectric ceramic 3 and the expected changes in the angle and frequency of the oscillating jet at the outlet of the self-excited fluid oscillator 2.

[0046] The debugged compressor blade body 1 is installed on the compressor, and the control circuit is connected to the compressor's monitoring system to achieve real-time monitoring of the compressor's operating conditions and automatic adjustment of the parameters of the self-excited fluid oscillator 2. During the compressor's startup and operation, the monitoring system collects parameters such as the compressor's speed, inlet and outlet pressures, and flow rate in real time and transmits these parameters to the controller. Based on the preset control strategy, the controller analyzes the current compressor operating conditions, sends corresponding control instructions to the signal generator, and adjusts the excitation parameters of the piezoelectric ceramic disc 3. This allows the oscillating jet generated by the self-excited fluid oscillator 2 to accurately control the three-dimensional flow within the compressor, ensuring stable and efficient operation of the compressor under various operating conditions.

[0047] It should be noted that in the above embodiments, as long as the technical solutions are not contradictory, they can be permuted and combined. Those skilled in the art can exhaust all possibilities based on the mathematical knowledge of permutations and combinations. Therefore, the present invention will no longer describe the technical solutions after permutations and combinations one by one, but it should be understood that the technical solutions after permutations and combinations have been disclosed by the present invention.

[0048] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A compressor blade based on a distributed self-excited adjustable fluid oscillator, comprising a compressor blade body (1), the compressor blade body (1) having a pressure surface (7) and a suction surface (8), characterized in that: It also includes a plurality of self-excited fluid oscillators (2) and a piezoelectric ceramic-based parameter adjustment device corresponding to each self-excited fluid oscillator (2), wherein the plurality of self-excited fluid oscillators (2) are arranged inside the compressor blade body (1), and the self-excited fluid oscillator (2) includes a flow channel (4), an inlet hole (5), an outlet hole (6), a resonance cavity (9) and a feedback channel (10), wherein the resonance cavity (9) is respectively connected to the flow channel (4) and the feedback channel (10), the outlet hole (6) of the flow channel (4) is opened in the flow separation area of ​​the suction surface (8), the inlet hole (5) of the self-excited fluid oscillator (2) is opened on the pressure surface (7), and the adjustment outlet (11) of the resonance cavity (9) is arranged on the suction surface (8); The piezoelectric ceramic-based parameter adjustment device includes a piezoelectric ceramic piece (3) and an external control circuit. The piezoelectric ceramic piece (3) is mounted on an adjustment outlet (11) connected to a suction surface (8) or on the inner wall of an outlet hole (6). The external control circuit is electrically connected to the piezoelectric ceramic piece (3) and is used to apply electric field signals of different intensities and frequencies to the piezoelectric ceramic piece (3) so as to cause the piezoelectric ceramic piece (3) to deform in order to fine-tune the internal structure of the self-excited fluid oscillator (2), including adjusting the flow rate and outlet shape of a resonance cavity (9) on one side, thereby changing the feedback mechanism.

2. The compressor blade based on a distributed self-excited adjustable fluid oscillator according to claim 1, characterized in that: The response time of the piezoelectric ceramic step response test of the piezoelectric ceramic piece (3) is ≤0.5ms, and the cross-sectional area of ​​the feedback channel (10) is dynamically adjusted through voltage input.

3. The compressor blade based on a distributed self-excited adjustable fluid oscillator according to claim 1, characterized in that: The included angle α between the inlet hole (5) on the pressure surface (7) and the tangential direction of the position is 10-30 degrees, the included angle β between the adjustment outlet (11) on the suction surface (8) and the tangential direction of the position is 85-95 degrees, and the included angle between the outlet hole (6) on the suction surface (8) and the tangential direction of the position is 15-30 degrees.

4. The compressor blade based on a distributed self-excited adjustable fluid oscillator according to claim 1, characterized in that: The compressor blade body (1) is made of high-temperature-resistant, high-strength aviation material.

5. The compressor blade based on a distributed self-excited adjustable fluid oscillator according to claim 1, characterized in that: The distribution density and position of the plurality of self-excited fluid oscillators (2) inside the compressor blade body (1) are determined according to the flow field characteristics inside the compressor and the flow separation area distribution of the suction surface (8).

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