A method and system for controlling the anti-surge of a magnetically suspended high-speed centrifugal blower

Abstract

The present invention provides an anti-surge control method and system for a magnetic levitation high-speed centrifugal blower. The method includes collecting in real time the output signals of the magnetic levitation high-speed centrifugal blower, and the output signals include an outlet pressure signal and a blower flow signal; calculating a surge coefficient k based on the outlet pressure signal and the blower flow signal x ; judging the magnitude of the surge coefficient k x and the slopes k1, k2 of the critical surge line calculated in advance. When k x < k1, PID regulation control is adopted. When k1 ≤ k x ≤ k2, anti-surge PID regulation control is adopted. When k2 < k x , anti-surge PID regulation control is adopted, and at the same time an alarm signal is sent and the blower is decelerated; the output signal after PID regulation control is processed to obtain a PWM wave, so as to realize the anti-surge control of the magnetic levitation high-speed centrifugal blower. The present invention controls the operating state of the magnetic levitation high-speed centrifugal blower by varying the gain parameters, making it operate in a safe area and ensuring that the magnetic bearing can be stably controlled when a surge phenomenon occurs.

Description

Technical Field

[0001] The present invention relates to the technical field of blower control, and particularly to an anti-surge control method and system for a magnetic levitation high-speed centrifugal blower. Background Art

[0002] During the operation of a magnetic levitation blower, due to unstable working conditions such as too low intake pressure, sudden reduction in speed, and sudden decrease in exhaust volume, the outlet pressure of the blower may drop significantly. When the pressure in the air supply pipeline is greater than the outlet pressure, the gas will flow back into the blower until the pipeline pressure is less than the blower outlet pressure. Then, continue to supply air to the pipeline, the blower outlet pressure decreases again, and the pipeline gas will flow back into the blower again. Repeating this cycle will cause severe vibration, resulting in the occurrence of a surge phenomenon, which in turn affects the normal operation of the magnetic bearings. In severe cases, the rotor instability fault phenomenon will occur. Therefore, there is an urgent need for an anti-surge control method for a magnetic levitation high-speed centrifugal blower to solve the above problems. Summary of the Invention

[0003] For this reason, the embodiments of the present invention provide an anti-surge control method and system for a magnetic levitation high-speed centrifugal blower, which are used to solve the problem that the bearings are unstable when a surge phenomenon occurs in the existing magnetic levitation high-speed centrifugal blower, and then the rotor appears unstable faults.

[0004] To solve the above technical problems, the embodiments of the present invention provide an anti-surge control method for a magnetic levitation high-speed centrifugal blower, and the method includes:

[0005] S1: Collect the output signals of the magnetic levitation high-speed centrifugal blower in real time, and the output signals include an outlet pressure signal and a blower flow signal;

[0006] S2: Calculate a surge coefficient k according to the outlet pressure signal and the blower flow signal x ;

[0007] S3: Judge the magnitude of the surge coefficient k x and the critical surge line slopes k1 and k2 calculated in advance. When k x <k1, adopt PID adjustment control. When k1≤k x ≤k2, adopt anti-surge PID adjustment control. When k2<k x , adopt anti-surge PID adjustment control, and at the same time send an alarm signal and perform a deceleration operation on the blower;

[0008] S4: Process the output signal after PID adjustment control to obtain a PWM wave, and realize the anti-surge control of the magnetic levitation high-speed centrifugal blower;

[0009] The expression formula of the PID adjustment control is as follows:

[0010]

[0011] Among them, u(t) is the output signal, e(t) is the input signal, K p is the proportional coefficient, T i is the integration time constant, T d Differential time constant;

[0012] The anti-surge regulation control formula is as follows:

[0013]

[0014] Among them, u(t) is the output signal, e(t) is the input signal, K p is the proportional coefficient, T i is the integration time constant, T d Differential time constant, α, δ, β are all constants, k x is the surge coefficient.

[0015] Preferably, the surge coefficient k is calculated based on the outlet pressure signal and the fan flow signal. x The method is:

[0016] The surge coefficient k x It is equal to the ratio of outlet pressure to fan flow rate, and its calculation formula is as follows:

[0017]

[0018] Wherein, P represents the outlet pressure of the magnetic levitation high-speed centrifugal blower, and Q represents the fan flow rate of the magnetic levitation high-speed centrifugal blower.

[0019] Preferably, the critical surge line slopes k1 and k2 are calculated as follows:

[0020] The slope k0 of the surge line of the magnetic levitation high-speed centrifugal blower is obtained according to the fan flow rate and outlet pressure of the magnetic levitation high-speed centrifugal blower at different speeds;

[0021] The critical surge line slopes k1 and k2 are calculated according to the formulas k1 = k0 (1-6%), k2 = k0 (1+6%).

[0022] Preferably, the method for processing the output signal after PID regulation control to obtain the PWM wave is:

[0023] The output signal after PID regulation control is processed through rotor cross decoupling and adaptive filtering operation to obtain PWM wave.

[0024] An embodiment of the present invention provides a surge prevention control system for a magnetic levitation high-speed centrifugal blower, which system includes:

[0025] A fan system for outputting signals, the output signals including an outlet pressure signal and a fan flow signal;

[0026] A DSP chip for performing algorithm processing on the output signals and outputting a PWM wave and an alarm signal;

[0027] A host computer for receiving the alarm signal and sending a deceleration signal to the fan system;

[0028] An FPGA chip for performing PWM modulation on the PWM wave and outputting a modulated PMW wave;

[0029] A power bridge for obtaining a control current based on the modulated PMW wave and outputting the control current;

[0030] A rotor system for receiving the control current and feeding back a position signal to the DSP chip.

[0031] Preferably, the DSP chip is used to execute the above-mentioned surge prevention control method for the magnetic levitation high-speed centrifugal blower.

[0032] Preferably, the DSP chip includes a fan flow and outlet pressure sampling module, a data processing module, a surge regulation module, a CAN communication module, an output module, and a position sampling module;

[0033] The fan flow and outlet pressure sampling module is used to collect in real time the output signals of the magnetic levitation high-speed centrifugal blower, the output signals including an outlet pressure signal and a fan flow signal;

[0034] The data processing module is used to calculate a surge coefficient k based on the outlet pressure signal and the fan flow signal x ;

[0035] The surge regulation module is used to judge the magnitude of the surge coefficient k x and the slopes k1, k2 of the critical surge lines calculated in advance. When k x <k1, PID regulation control is adopted. When k1 ≤ k x ≤ k2, anti-surge PID regulation control is adopted. When k2 < k x , anti-surge PID regulation control is adopted;

[0036] The CAN communication module is used to send an alarm signal to the host computer when k2 < k x ;

[0037] The output module is used to process the output signal after PID regulation control to obtain PWM wave, thereby realizing anti-surge control of the magnetic suspension high-speed centrifugal blower;

[0038] The position sampling module is used to receive the position signal of the rotor system;

[0039] The expression formula of the PID regulation control is as follows:

[0040]

[0041] Among them, u(t) is the output signal, e(t) is the input signal, K p is the proportional coefficient, T i is the integration time constant, T d Differential time constant;

[0042] The anti-surge regulation control formula is as follows:

[0043]

[0044] Among them, u(t) is the output signal, e(t) is the input signal, K p is the proportional coefficient, T i is the integration time constant, T d Differential time constant, α, δ, β are all constants, k x is the surge coefficient.

[0045] Preferably, the DSP chip is used to perform algorithmic processing on the input signal, and the algorithm includes a PID algorithm, a rotor cross-decoupling algorithm and an adaptive filtering algorithm.

[0046] Preferably, the model of the DSP chip is STM32F28335, and the model of the FPGA chip is Altera Cyclone IV.

[0047] An embodiment of the present invention provides a computer storage medium storing a computer software product. The computer software product includes several instructions for enabling a computer device to execute the above-described method.

[0048] It can be seen from the above technical solutions that the present invention has the following advantages:

[0049] An embodiment of the present invention provides a method and system for preventing surge in a magnetic levitation high-speed centrifugal blower. The present invention controls the operating state of the magnetic levitation blower by changing the gain parameter based on the surge characteristic curve of the magnetic levitation high-speed centrifugal blower, so that the blower operates in a safe area, avoids the occurrence of surge phenomenon that causes instability of the magnetic levitation bearing, and ensures that the magnetic bearing can be stably controlled when surge phenomenon occurs. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following briefly describes the drawings required in the embodiments. By referring to the drawings, the features and advantages of the present invention will be more clearly understood. The drawings are schematic and should not be construed as imposing any limitation on the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts. Among them:

[0051] Figure 1 It is a flowchart of a surge prevention control method for a magnetic levitation high-speed centrifugal blower provided in an embodiment;

[0052] Figure 2 It is a surge characteristic curve of a certain model of magnetic levitation high-speed centrifugal blower provided in an embodiment;

[0053] Figure 3 It is a schematic block diagram of a surge prevention control system for a magnetic levitation high-speed centrifugal blower provided in an embodiment;

[0054] Figure 4 It is a schematic block diagram of the internal modules of a DSP chip provided in an embodiment. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0055] [[ID=,24]]To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0056] As Figure 1 shown, an embodiment of the present invention provides a surge prevention control method for a magnetic levitation high-speed centrifugal blower, and the method includes:

[0057] S1: Real-time collect the output signals of the magnetic levitation high-speed centrifugal blower, and the output signals include outlet pressure signals and fan flow signals;

[0058] S2: Calculate the surge coefficient k according to the outlet pressure signal and the fan flow signal x ;

[0059] S3: Judge the magnitudes of the surge coefficient k x and the slopes k1, k2 of the critical surge lines calculated in advance. When k x < k1, adopt PID adjustment control. When k1 ≤ k xWhen ≤k2, anti-surge PID regulation control is adopted. When k2 <k x When the fan is running, anti-surge PID regulation control is adopted, and an alarm signal is sent to slow down the fan;

[0060] S4: Process the output signal after PID regulation control to obtain PWM wave, and realize anti-surge control of the magnetic suspension high-speed centrifugal blower.

[0061] The present invention provides a method for controlling the surge of a magnetically suspended high-speed centrifugal blower, which collects the output signal of the magnetically suspended high-speed centrifugal blower in real time and calculates the surge coefficient k according to the outlet pressure signal and the blower flow signal. x , for surge coefficient k in different ranges x Corresponding adjustment and control are carried out to realize variable gain anti-surge control of the magnetic levitation centrifugal blower. The operating state of the magnetic levitation blower is controlled by changing the gain parameters so that it works in a safe area, ensuring that the magnetic bearing can be stably controlled when surge occurs.

[0062] Furthermore, step S1 includes:

[0063] The output signal of the magnetic levitation high-speed centrifugal blower is collected in real time, wherein the output signal includes an outlet pressure signal and a blower flow signal.

[0064] The present invention uses a certain type of magnetic levitation blower as an experimental sample. The rotor structure is G50 steel and has a mass of 72Kg. The fan flow rate Q and outlet pressure P at different speeds are sampled to obtain the surge characteristic curve as shown in the figure. Figure 2 As shown in the figure, the data of outlet pressure P and fan flow Q collected when the magnetic suspension blower enters the surge zone at six speeds are as follows:

[0065] At speed 1, the pressure at the surge line outlet is 2.4×101325Pa(A), and the fan flow rate is 53800kg / h; at speed 2, the pressure at the surge line outlet is 2.65×101325Pa(A), and the fan flow rate is 57100kg / h; at speed 3, the pressure at the surge line outlet is 3×101325Pa(A), and the fan flow rate is 64800kg / h; at speed 4, the pressure at the surge line outlet is 3.3×101325Pa(A), and the fan flow rate is 69500kg / h; at speed 5, the pressure at the surge line outlet is 3.6×101325Pa(A), and the fan flow rate is 76000kg / h; at speed 6, the pressure at the surge line outlet is 3.88×101325Pa(A), and the fan flow rate is 82700kg / h; the slope k0 of the surge line is obtained from the above data.

[0066] Furthermore, step S2 includes:

[0067] Calculate the surge coefficient k based on the outlet pressure signal P and the fan flow signal Q x , the surge coefficient k x is equal to the ratio of the outlet pressure to the fan flow rate, and its calculation formula is as follows:

[0068]

[0069] where P represents the outlet pressure of the magnetic levitation high-speed centrifugal blower, and Q represents the fan flow rate of the magnetic levitation high-speed centrifugal blower.

[0070] ​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​

[0079]

[0080] Among them, u(t) is the output signal, e(t) is the input signal, and K p is the proportionality coefficient, and T i is the integral time constant, and T d is the differential time constant. α, δ, and β are all constants, and k x is the surge coefficient.

[0081] When the control force of the magnetic bearing on the rotor weakens to the minimum, the PID parameter adjustment sets the control limit. βk x K p T d <z. Among them, α, δ, and β determine the response speed and dynamic performance of the three links of the PID controller, and m, n, and z determine the critical control limit of the three links of the PID controller. The different values of α, δ, β, m, n, and z for different prototypes result in different control effects of the PID controller. In the present invention, for the rotor structure mentioned above, when the values of α, δ, β are (2, 50, 16) and the values of m, n, z are (8, 1600, 300), the control effect is the best.

[0082] Further, step S4 includes:

[0083] Processing the output signal after PID adjustment control to obtain a PWM wave, and realizing the anti-surge control of the magnetic levitation high-speed centrifugal blower;

[0084] The method for processing the output signal after PID adjustment control to obtain a PWM wave is:

[0085] Processing the output signal after PID adjustment control through rotor cross decoupling and adaptive filtering operations to obtain a PWM wave.

[0086] As Figure 3 shown, an embodiment of the present invention provides an anti-surge control system for a magnetic levitation high-speed centrifugal blower, and the system includes:

[0087] A fan system 10 for outputting signals, and the output signals include an outlet pressure signal and a fan flow signal;

[0088] A DSP chip 20 for performing algorithm processing on the output signals and outputting a PWM wave and an alarm signal;

[0089] A host computer 30 for receiving the alarm signal and sending a deceleration signal to the fan system;

[0090] The FPGA chip 40 is used to perform PWM modulation on the PWM wave and output the modulated PMW wave;

[0091] The power bridge 50 is used to obtain a control current according to the modulated PMW wave and output the control current;

[0092] The rotor system 60 is used to receive the control current and feedback a position signal to the DSP chip.

[0093] Further, the DSP chip 20 is used to execute the anti-surge control method of the magnetic levitation high-speed centrifugal blower described above.

[0094] As Figure 4 shown, the DSP chip 20 includes a fan flow and outlet pressure sampling module 201, a data processing module 202, a surge regulation module 203, a CAN communication module 204, an output module 205, and a position sampling module 206;

[0095] The fan flow and outlet pressure sampling module 201 is used to collect the output signals of the magnetic levitation high-speed centrifugal blower in real time, and the output signals include an outlet pressure signal and a fan flow signal;

[0096] The data processing module 202 is used to calculate the surge coefficient k according to the outlet pressure signal and the fan flow signal x ;

[0097] The surge regulation module 203 is used to judge the magnitude of the surge coefficient k x and the critical surge line slopes k1 and k2 calculated in advance. When k x < k1, PID regulation control is adopted. When k1 ≤ k x ≤ k2, anti-surge PID regulation control is adopted. When k2 < k x , anti-surge PID regulation control is adopted;

[0098] The CAN communication module 204 is used to send an alarm signal to the host computer 30 when k2 < k x ;

[0099] The output module 205 is used to process the output signal after PID regulation control to obtain a PWM wave, and realize the anti-surge control of the magnetic levitation high-speed centrifugal blower;

[0100] The position sampling module 206 is used to receive the position signal of the rotor system 60;

[0101] The expression formula of the PID regulation control is as follows:

[0102]

[0103] Among them, u(t) is the output signal, e(t) is the input signal, K p is the proportional coefficient, T i is the integration time constant, T d Differential time constant;

[0104] The anti-surge regulation control formula is as follows:

[0105]

[0106] Among them, u(t) is the output signal, e(t) is the input signal, K p is the proportional coefficient, T i is the integration time constant, T d Differential time constant, α, δ, β are all constants, k x is the surge coefficient.

[0107] An embodiment of the present invention provides a magnetic levitation high-speed centrifugal blower anti-surge control system. The control process of the system is as follows: first, the DSP chip 20 performs operations such as PID algorithms, rotor cross-decoupling algorithms, and filtering algorithms on the input signal, outputting five PWM signals to the FPGA chip 40 for PWM modulation. The modulated PWM output is transmitted through the power bridge 50 to obtain a control current that acts on the rotor system 60. The DSP chip 20 samples the five position signals of the rotor system 60 according to the position sampling module 206, and feeds them into the DSP chip 20 to form a closed-loop control. The fan flow and outlet pressure sampling module 201 samples the fan flow and outlet pressure signals of the fan system 10, and inputs them into the DSP chip 20 for surge PID control operations. The fan system 10 mainly consists of a casing, an impeller, and a motor. When the ratio of the outlet pressure P to the fan flow Q is in the surge zone, the DSP chip 20 sends a surge alarm signal to the host computer 30 via the CAN communication module 204. The host computer 30 then sends a speed reduction signal to the fan system 10 to make the ratio of the outlet pressure P to the fan flow Q leave the surge zone. Realize variable gain anti-surge control of magnetic levitation centrifugal blower.

[0108] Since the DSP chip 20 needs to perform operations such as PID algorithm, rotor cross-decoupling algorithm, and adaptive filtering algorithm, a large amount of calculation is required. The STM32F28335 chip of TI company used in the DSP chip 20 of the present invention can meet the calculation requirements, and the FPGA chip 40 uses the Cyclone IV chip of Altera company.

[0109] Note that the above are only preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

[0110] Those skilled in the art will appreciate that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the present application can adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application can adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.

[0111] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the steps in the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0112] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 These computer program instructions can also be loaded onto a computer or other programmable data processing device, so that a series of operation steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process in the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0113] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A method for controlling surge prevention of a magnetically suspended high-speed centrifugal blower, characterized in that: include: S1: Real-time acquisition of output signals of a magnetically suspended high-speed centrifugal blower, wherein the output signals include an outlet pressure signal and a blower flow signal; S2: Calculating the surge coefficient k based on the outlet pressure signal and the fan flow signal x , where the surge coefficient k x It is equal to the ratio of outlet pressure to fan flow rate, and its calculation formula is as follows: Wherein, P represents the outlet pressure of the magnetic levitation high-speed centrifugal blower, and Q represents the fan flow rate of the magnetic levitation high-speed centrifugal blower; S3: Determine the surge coefficient k x and the magnitudes of the pre-calculated critical surge line slopes k1 and k2. When k x < k1, use PID regulation control. When k1 ≤ k x ≤ k2, use anti-surge PID regulation control. When k2 < k x , use anti-surge PID regulation control and simultaneously send an alarm signal and perform a deceleration operation on the fan. The calculation methods for the critical surge line slopes k1 and k2 are as follows: The slope k0 of the surge line of the magnetic levitation high-speed centrifugal blower is obtained according to the fan flow rate and outlet pressure of the magnetic levitation high-speed centrifugal blower at different speeds; Calculate the critical surge line slopes k1 and k2 according to the formula k1 = k0 (1-6%), k2 = k0 (1+6%); S4: Processing the output signal after PID regulation control to obtain PWM wave, thereby realizing anti-surge control of the magnetic suspension high-speed centrifugal blower; The expression formula of the PID regulation control is as follows: Among them, u(t) is the output signal, e(t) is the input signal, K p is the proportional coefficient, T i is the integration time constant, T d Differential time constant; The expression formula of the anti-surge PID regulation control is as follows: Among them, u(t) is the output signal, e(t) is the input signal, K p is the proportional coefficient, T i is the integration time constant, T d Differential time constant, α, δ, β are all constants, k y is the surge coefficient.

2. The anti-surge control method for a magnetically suspended high-speed centrifugal blower according to claim 1, characterized in that: The method for processing the output signal after PID regulation control to obtain the PWM wave is: The output signal after PID regulation control is processed through rotor cross decoupling and adaptive filtering operation to obtain PWM wave.

3. A magnetic levitation high-speed centrifugal blower anti-surge control system, characterized in that: include: A fan system, configured to output signals, wherein the output signals include an outlet pressure signal and a fan flow signal; A DSP chip is used to perform algorithmic processing on the output signal and output a PWM wave and an alarm signal; wherein the DSP chip is used to execute the anti-surge control method for a magnetically suspended high-speed centrifugal blower according to any one of claims 1 to 2; A host computer, configured to receive the alarm signal and send a deceleration signal to the fan system; An FPGA chip is used to perform PWM modulation on the PWM wave and output a modulated PWM wave; A power bridge, configured to obtain a control current according to the modulated PMW wave and output the control current; The rotor system is used to receive the control current and feed back a position signal to the DSP chip.

4. The anti-surge control system for a magnetically suspended high-speed centrifugal blower according to claim 3, characterized in that: The DSP chip includes a fan flow, outlet pressure sampling module, a data processing module, a surge regulation module, a CAN communication module, an output module and a position sampling module; The fan flow and outlet pressure sampling module is used to collect the output signal of the magnetic levitation high-speed centrifugal blower in real time, and the output signal includes the outlet pressure signal and the fan flow signal; The data processing module is used to calculate the surge coefficient k based on the outlet pressure signal and the fan flow signal x ; The surge control module is used to judge the surge coefficient k x and the magnitudes of the slopes k1 and k2 of the critical surge line calculated in advance. When k x < k1, PID regulation control is adopted. When k1 ≤ k x ≤ k2, anti-surge PID regulation control is adopted. When k2 < k x , anti-surge PID regulation control is adopted; The CAN communication module is used when k2 <k x When an alarm signal is sent to the host computer; The output module is used to process the output signal after PID regulation control to obtain PWM wave, thereby realizing anti-surge control of the magnetic suspension high-speed centrifugal blower; The position sampling module is used to receive the position signal of the rotor system; The expression formula of the PID regulation control is as follows: Among them, u(t) is the output signal, e(t) is the input signal, K p is the proportional coefficient, T i is the integration time constant, T d Differential time constant; The expression formula of the anti-surge PID regulation control is as follows: Among them, u(t) is the output signal, e(t) is the input signal, K p is the proportional coefficient, T i is the integration time constant, T d Differential time constant, α, δ, β are all constants, k x is the surge coefficient.

5. The anti-surge control system for a magnetically suspended high-speed centrifugal blower according to claim 3, characterized in that: The DSP chip is used to perform algorithm processing on the input signal, wherein the algorithm includes a PID algorithm, a rotor cross-decoupling algorithm, and an adaptive filtering algorithm.

6. The anti-surge control system for a magnetically suspended high-speed centrifugal blower according to claim 3, characterized in that: The model of the DSP chip is STM32F28335, and the model of the FPGA chip is Altera Cyclone IV.

7. A computer storage medium, characterized in that The computer storage medium stores a computer software product, and the computer software product includes several instructions for enabling a computer device to execute the method according to any one of claims 1 to 2.

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