A high-voltage generator disturbance suppression method, device, equipment and storage medium

Abstract

The application is a high-voltage generator disturbance suppression method, device, equipment and storage medium, and particularly relates to the technical field of high-voltage generators. The method comprises the following steps: acquiring a closed-loop feedback signal; the closed-loop feedback signal is obtained by sampling an output signal of a high-pressure oil tank; filtering the closed-loop feedback signal to obtain a target feedback signal for a target power frequency; and adjusting a digital control module based on the target feedback signal. Based on the above method, the function of high-voltage generator disturbance suppression is realized, and the method is targeted and high in precision.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of high-voltage generators, and in particular to a high-voltage generator disturbance suppression method, device, equipment and storage medium. BACKGROUND

[0002] As one of the core components of X-ray detection, the high-voltage generator has a great influence on the quality of the X-ray detection image. The ripple in the tube voltage kV and the tube current mA of the X-ray tube in the high-voltage generator has a particularly serious impact on the X-ray detection image.

[0003] In the high-voltage generator, there is a 2 times power frequency (50 / 60 Hz) fluctuation in the DC bus after rectification. With the increase of the load, the fluctuation will also increase accordingly. The fluctuation of the voltage on the bus will affect the fluctuation of the output voltage and current of the high-voltage generator after passing through the transformer. In addition, due to the inherent reason of the circuit topology, there is an alternating voltage of power frequency (50 / 60 Hz) between the inverter cable and the PE (ground wire). Because the oil tank body is connected with the PE, the inverter cable inside the oil tank and the tank form a power frequency (50 / 60 Hz) magnetic field, so that the feedback cable couples a power frequency (50 / 60 Hz) disturbance, which makes it difficult to realize the closed-loop feedback control of kV and mA of the high-voltage generator. SUMMARY

[0004] The present application provides a high-voltage generator disturbance suppression method, device, equipment and storage medium, and the technical solution is as follows.

[0005] On the one hand, a high-voltage generator disturbance suppression method is provided, which is applied to a digital control module of a high-voltage generator system; the high-voltage generator system further includes a high-voltage oil tank;

[0006] The method comprises:

[0007] Obtaining a closed-loop feedback signal; the closed-loop feedback signal is obtained by sampling an output signal of the high-voltage oil tank;

[0008] For a target power frequency, the closed-loop feedback signal is filtered to obtain a target feedback signal;

[0009] Based on the target feedback signal, the digital control module is adjusted.

[0010] On the other hand, a high-voltage generator disturbance suppression device is provided, which is applied to a digital control module of a high-voltage generator system; the high-voltage generator system further includes a high-voltage oil tank;

[0011] The device comprises:

[0012] The data acquisition module is configured to acquire a closed-loop feedback signal, wherein the closed-loop feedback signal is obtained by sampling an output signal of the high-voltage tank.

[0013] The filtering module is configured to filter the closed-loop feedback signal to obtain a target feedback signal.

[0014] The feedback processing module is configured to adjust the digital control module based on the target feedback signal.

[0015] In a possible implementation, the input signal of the high-voltage tank is subjected to high-frequency disturbance suppression.

[0016] In a possible implementation, the filtering of the closed-loop feedback signal to obtain a target feedback signal comprises:

[0017] The closed-loop feedback signal is subjected to active filtering to obtain a first feedback signal.

[0018] The first feedback signal is subjected to frequency selection filtering adjustment to obtain a target feedback signal.

[0019] In a possible implementation, the closed-loop feedback signal is subjected to instrument amplification processing before being subjected to high-pass filtering and low-pass filtering.

[0020] In a possible implementation, the high-voltage generator system further comprises a DC bus and an inverter module.

[0021] The apparatus further comprises:

[0022] LC resonance notch processing is performed on an input signal of the inverter module in combination with the target power frequency and a center resonance frequency, wherein the center resonance frequency is used to indicate a suppression frequency of the LC resonance notch processing.

[0023] In a possible implementation, the combination of the target power frequency and the center resonance frequency comprises:

[0024] The target power frequency is the same as the center resonance frequency.

[0025] In a possible implementation, the center resonance frequency is calculated by using the following formula:

[0026]

[0027] wherein f is the center resonance frequency, L is an inductance value when the LC resonance notch processing is performed, and C is a capacitance value when the LC resonance notch processing is performed.

[0028] In still another aspect, a computer device is provided, which includes a processor and a memory having stored therein at least one instruction, which is loaded and executed by the processor to implement the above-mentioned high-voltage generator disturbance suppression method performed by a target processor.

[0029] In still another aspect, a computer device is provided, which includes a processor and a memory having stored therein at least one instruction, which is loaded and executed by the processor to implement the above-mentioned high-voltage generator disturbance suppression method performed by a target processor.

[0030] In still another aspect, a computer program product or computer program is provided, which includes computer instructions stored in a computer readable storage medium. A processor of a computer device reads the computer instructions from the computer readable storage medium, and the processor executes the computer instructions to cause the computer device to perform the above-mentioned high-voltage generator disturbance suppression method performed by a target processor.

[0031] The technical scheme provided in the present application can include the following beneficial effects:

[0032] First, a closed-loop feedback signal is acquired, which is obtained by sampling an output signal of a high-voltage tank; then, the closed-loop feedback signal is filtered with respect to a target power frequency to obtain a target feedback signal; finally, the digital control module is fed back based on the target feedback signal. By filtering the closed-loop feedback signal of the target power frequency and then inputting the filtered closed-loop feedback signal to the digital control module for feedback, the pertinence is strong and the accuracy is high when the high-voltage generator disturbance is suppressed. BRIEF DESCRIPTION OF DRAWINGS

[0033] In order to more clearly illustrate the technical scheme in the specific embodiments or prior art of the present application, the drawings needed in the specific embodiments or prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0034] Figure 1 is a structural schematic diagram of an X-ray high-voltage generator system according to an exemplary embodiment.

[0035] Figure 2 is a flowchart of a high-voltage generator disturbance suppression method according to an exemplary embodiment.

[0036] Figure 3 is a flowchart of a high-voltage generator disturbance suppression method according to an exemplary embodiment.

[0037] Figure 4 A schematic diagram of disturbance suppression of a high-voltage tank is shown.

[0038] Figure 5 A circuit example diagram of an instrument amplifier circuit and an active filter circuit is shown.

[0039] Figure 6 A schematic diagram of disturbance suppression of a DC bus is shown.

[0040] Figure 7 A circuit example diagram of an LC resonant wave trap is shown.

[0041] Figure 8 A structural block diagram of a high-voltage generator disturbance suppression device is shown according to an example embodiment.

[0042] Figure 9 A structural block diagram of a computer device is shown according to an example embodiment. DETAILED DESCRIPTION

[0043] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0044] It should be understood that the "indication" mentioned in the embodiments of the present application can be direct indication, indirect indication, or can be an indication of an associated relationship. For example, A indicates B, which can mean that B can be obtained through A; or it can mean that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; or it can mean that A and B have an associated relationship.

[0045] In the description of the embodiments of the present application, the term "corresponding" can mean that there is a direct or indirect corresponding relationship between the two, or it can mean that there is an associated relationship between the two, or it can mean an indication and being indicated, configuration and being configured, etc.

[0046] In the embodiments of the present application, "predefined" can be realized by pre-saving corresponding codes, tables or other means for indicating related information in devices (for example, including terminal devices and network devices), and the present application does not limit the specific implementation manner thereof.

[0047] Figure 1is a structural schematic diagram of an X-ray high-voltage generator system according to an exemplary embodiment. As shown in Figure 1 In the embodiment of the present application, the X-ray high-voltage generator system includes a control system and a high-voltage oil tank, and the control system further includes an input rectification module, an inverter module, a control module, a filament module, and an auxiliary power supply module. The input side of the X-ray high-voltage generator system is an AC input voltage from a power grid.

[0048] The AC input voltage from the power grid is input into the control system of the X-ray high-voltage generator system, and the AC voltage is converted into a DC bus voltage after passing through the input rectification module. The DC bus voltage obtains feedback signals of a tube voltage kV and a tube current mA after passing through the inverter module, and the feedback signals of the tube voltage kV and the tube current mA are input into the high-voltage oil tank to obtain kV / mA feedback and input into a system digital control circuit.

[0049] Figure 2 is a flowchart of a high-voltage generator disturbance suppression method according to an exemplary embodiment. The method is applied to a digital control module of a high-voltage generator system; the high-voltage generator system further includes a high-voltage oil tank; and the method includes the following steps:

[0050] Step 201, obtaining a closed-loop feedback signal; the closed-loop feedback signal is obtained by sampling an output signal of the high-voltage oil tank.

[0051] X-ray is a kind of electromagnetic wave with very short wavelength, and has great penetration ability, which can be applied to CT imaging and industrial flaw detection. In the laboratory, X-ray is generated by an X-ray tube in a high-voltage generator. The X-ray tube is a vacuum tube with a cathode and an anode. The cathode is made of tungsten wire and can emit hot electrons after being electrified. The anode (target) is made of high-melting-point metal (usually tungsten, and X-ray tubes for crystal structure analysis can also use iron, copper, nickel, etc.). In the high-voltage generator, the electron beam is accelerated by tens of thousands of volts to tens of millions of volts to bombard the target, and X-ray is emitted from the target.

[0052] In the X-ray tube, the electrical signal on the filament (including the tube voltage kV and the tube current mA) has a great influence on the imaging quality of the X-ray image. If there is a disturbance in the high-voltage generator, it will affect the tube voltage kV and the tube current mA of the X-ray tube, and further affect the imaging quality of the X-ray image. Therefore, it is necessary to suppress the disturbance existing in the high-voltage generator.

[0053] In order to effectively suppress the disturbance existing in the high-voltage generator, the position of the disturbance needs to be found first. In the embodiment of the present application, the position of the disturbance is found by obtaining a closed-loop feedback signal of the high-voltage oil tank. Figure 1In the shown X-ray high-voltage generator system, due to the circuit topology, the inverter module is connected with the high-voltage tank through an inverter cable, and there is an alternating voltage of a power frequency (50 / 60 Hz) between the inverter cable and the ground wire PE. In addition, the tank body of the high-voltage tank is connected with the ground wire PE, so that a part of the inverter cable inside the tank and the tank body of the high-voltage tank form a power frequency (50 / 60 Hz) magnetic field. Since the high-voltage tank is connected with the control module through a feedback cable, a part of the feedback cable inside the tank is coupled to the disturbance of the power frequency (50 / 60 Hz) generated by the power frequency (50 / 60 Hz) magnetic field, which greatly affects the closed-loop feedback control of the tube voltage kV and the tube current mA of the high-voltage generator.

[0054] Therefore, in order to suppress the disturbance, the electric signal flowing through the feedback cable can be sampled first, that is, the output signal of the high-voltage tank is sampled to obtain a closed-loop feedback signal.

[0055] Step 202, filtering the closed-loop feedback signal for a target power frequency to obtain a target feedback signal.

[0056] Since the disturbance is at the target power frequency, the closed-loop feedback signal can be filtered for the target power frequency.

[0057] Optionally, a filter is used to filter the closed-loop feedback signal, which can be designed according to actual needs.

[0058] Step 203, adjusting the digital control module based on the target feedback signal.

[0059] After filtering the closed-loop feedback signal to obtain the target feedback signal after suppressing the disturbance, the target feedback signal can be used as the input signal of the digital control module for closed-loop control. Since the target feedback signal has been suppressed, the interference received by the digital control module for closed-loop control is reduced.

[0060] In summary, the method first obtains a closed-loop feedback signal, which is obtained by sampling the output signal of the high-voltage tank. Then, the closed-loop feedback signal is filtered for a target power frequency to obtain a target feedback signal. Finally, the digital control module is fed back based on the target feedback signal. By filtering the closed-loop feedback signal of the target power frequency and inputting the filtered closed-loop feedback signal to the digital control module for feedback, the disturbance suppression of the high-voltage generator is realized with strong pertinence and high precision.

[0061] Figure 3is a flow chart of a high-voltage generator disturbance suppression method according to an exemplary embodiment. The method is applied to a digital control module of a high-voltage generator system; the high-voltage generator system also includes a high-voltage oil tank; and the method includes the following steps:

[0062] Step 301: Obtain a closed-loop feedback signal; the closed-loop feedback signal is obtained by sampling an output signal of the high-voltage oil tank.

[0063] In an X-ray tube, the electrical signal on the filament (including tube voltage kV and tube current mA) has a great influence on the imaging quality of the X-ray image. If there is a disturbance in the high-voltage generator, it will affect the tube voltage kV and the tube current mA of the X-ray tube, and further affect the imaging quality of the X-ray image. Therefore, it is necessary to suppress the disturbance existing in the high-voltage generator.

[0064] The disturbance existing in the high-voltage generator is divided into high-frequency disturbance and low-frequency disturbance. Since the acquisition frequency of the detector is limited when the X-ray image is acquired, the low-frequency disturbance in the high-voltage generator has a greater influence on the imaging quality of the X-ray image.

[0065] In order to effectively suppress the low-frequency disturbance existing in the high-voltage generator, it is necessary to first find the location of the disturbance. In Figure 1 In the X-ray high-voltage generator system shown in the figure, due to the circuit topology, the inverter module is connected to the high-voltage oil tank through the inverter cable, and there is a power frequency (50 / 60Hz) alternating voltage between the inverter cable and the ground wire PE. Again, the tank of the high-voltage oil tank is connected to the ground wire PE, so a part of the inverter cable inside the tank and the tank of the high-voltage oil tank form a power frequency (50 / 60Hz) magnetic field. Since the high-voltage oil tank is connected to the control module through the feedback cable, a part of the feedback cable inside the tank is coupled to the power frequency (50 / 60Hz) disturbance generated by the power frequency (50 / 60Hz) magnetic field, which has a great influence on the closed-loop feedback control of the high-voltage generator tube voltage kV and tube current mA. It should be noted that the inverter cable and the feedback cable are connected.

[0066] Therefore, in order to suppress the disturbance, the electrical signal flowing through the feedback cable can be sampled first, that is, the output signal of the high-voltage oil tank is sampled to obtain a closed-loop feedback signal.

[0067] Step 302: Filter the closed-loop feedback signal for a target power frequency to obtain a target feedback signal.

[0068] Figure 4 A schematic diagram of suppressing the disturbance of the high-voltage oil tank related to the embodiments of the present application is shown. The specific description of suppressing the disturbance of the high-voltage oil tank is as follows.

[0069] Optionally, high-frequency disturbance suppression can be applied to the input signal of the high-pressure oil tank.

[0070] Optionally, inside the high-voltage oil tank, a portion of the feedback cable is wrapped with a shielded copper mesh. Both ends of the shielded copper mesh are connected to the ground wire (PE) (equivalent to connecting to the high-voltage oil tank body) to suppress high-frequency disturbances in the input signal of the high-voltage oil tank. This shielded copper mesh can effectively reduce high-frequency disturbances.

[0071] Optionally, the closed-loop feedback signal can be amplified by an instrument before being processed by active filtering.

[0072] Optionally, an instrumentation amplifier circuit can be used to amplify the closed-loop feedback signal.

[0073] Furthermore, an active filter circuit is used to filter the closed-loop feedback signal. The active filter can effectively limit interference at a specified frequency (i.e., the target power frequency), thus reducing interference on the closed-loop feedback signal. Consequently, the digital control module can perform more precise closed-loop control using the target feedback signal, and the control algorithm can be better utilized.

[0074] Furthermore, the closed-loop feedback signal is subjected to active filtering to obtain the first feedback signal. This active filtering process includes high-pass filtering and low-pass filtering, which can limit the blocking frequency of the signal.

[0075] Furthermore, the first feedback signal is subjected to frequency-selective filtering to obtain the target feedback signal. By introducing frequency-selective filtering, the frequency selection effect can be improved.

[0076] Optionally, negative feedback can be achieved by connecting the output of the operational amplifier to its inverting input. The combination of the operational amplifier and negative feedback can increase the gain of the feedback loop and also provide some network isolation to the circuit.

[0077] Figure 5 The diagram shows an example circuit diagram of the instrumentation amplifier circuit and active filter circuit according to an embodiment of this application. XBP1 represents a frequency response tester.

[0078] Step 303: Adjust the digital control module based on the target feedback signal.

[0079] After filtering the closed-loop feedback signal to obtain the target feedback signal after suppressing the disturbance, the target feedback signal can be used as the input signal for the digital control module to perform closed-loop control.

[0080] Step 304: Combine the target power frequency and the center resonant frequency to perform LC resonant notch filtering on the input signal of the inverter module.

[0081] The center resonance frequency is used to indicate the suppression frequency of the LC resonance notch processing.

[0082] In addition, in Figure 1 In the X-ray high-voltage generator system shown, a DC bus and an inverter module are further included. After the commercial power is rectified by the input rectifier module, a 2 times power frequency (50 / 60 Hz) fluctuation (i.e. disturbance) exists on the DC bus. With the increase of the load, the fluctuation also increases accordingly. The fluctuation of the voltage on the DC bus will cause the fluctuation of the tube voltage kV and the tube current mA of the high-voltage generator after passing through the transformer in the high-voltage oil tank.

[0083] Figure 6 A schematic diagram of the disturbance suppression of the DC bus involved in the embodiments of the present application is shown. The specific description of the disturbance suppression of the DC bus is as follows.

[0084] Optionally, an LC resonance notch filter is transplanted in the rectified DC bus to perform LC resonance notch processing on the input signal of the inverter module to filter the fluctuation.

[0085] Optionally, the target power frequency is the same as the center resonance frequency.

[0086] Optionally, different inductance values and capacitance values are matched to control the resonance frequency of the LC resonance notch filter, so that the center resonance frequency of the LC resonance notch filter is equal to the fluctuation frequency (i.e. target power frequency) to be suppressed.

[0087] Optionally, the center resonance frequency is calculated by the following formula:

[0088]

[0089] Wherein, f is the center resonance frequency, L is the inductance value when performing LC resonance notch processing, and C is the capacitance value when performing LC resonance notch processing.

[0090] Optionally, the characteristic impedance Z is calculated by the following formula, and the characteristic impedance is very small when the LC resonance notch filter is at the center resonance frequency:

[0091]

[0092] Figure 7 A circuit example diagram of the LC resonance notch filter involved in the embodiments of the present application is shown. Wherein, VDC+ represents the positive electrode, VDC- represents the negative electrode, Vin represents the input voltage, Vout represents the output voltage, L1 represents the inductance, and C1 and C2 represent the capacitance.

[0093] In summary, the method first acquires a closed-loop feedback signal; the closed-loop feedback signal is obtained by sampling an output signal of a high-voltage tank; then, for a target power frequency, the closed-loop feedback signal is filtered to obtain a target feedback signal; finally, based on the target feedback signal, the digital control module is fed back. By filtering the closed-loop feedback signal of the target power frequency and then inputting the filtered closed-loop feedback signal to the digital control module for feedback, the perturbation suppression of the high-voltage generator is realized with strong pertinence and high precision.

[0094] Figure 8 is a structural block diagram of a high-voltage generator perturbation suppression device according to an example embodiment. The high-voltage generator perturbation suppression device is applied to a digital control module of a high-voltage generator system; the high-voltage generator system also includes a high-voltage tank;

[0095] The device includes:

[0096] The data acquisition module 801 is configured to acquire a closed-loop feedback signal; the closed-loop feedback signal is obtained by sampling an output signal of a high-voltage tank;

[0097] The filtering module 802 is configured to filter the closed-loop feedback signal for a target power frequency to obtain a target feedback signal;

[0098] The feedback processing module 803 is configured to adjust the digital control module based on the target feedback signal.

[0099] In a possible implementation, the input signal of the high-voltage tank is subjected to high-frequency perturbation suppression.

[0100] In a possible implementation, the filtering of the closed-loop feedback signal to obtain a target feedback signal includes:

[0101] The closed-loop feedback signal is subjected to active filtering to obtain a first feedback signal;

[0102] The first feedback signal is subjected to frequency selection filtering adjustment to obtain a target feedback signal.

[0103] In a possible implementation, before the active filtering of the closed-loop feedback signal, the closed-loop feedback signal is subjected to instrument amplification processing.

[0104] In a possible implementation, the high-voltage generator system also includes a DC bus and an inverter module;

[0105] The device also includes:

[0106] The input signal of the inverter module is subjected to LC resonance notch processing in combination with the target power frequency and a center resonance frequency; the center resonance frequency is used to indicate the suppression frequency of the LC resonance notch processing.

[0107] In a possible implementation, the combination of the target power frequency and the center resonance frequency comprises:

[0108] The target power frequency is the same as the center resonance frequency.

[0109] In a possible implementation, the center resonance frequency is calculated by using the following formula:

[0110]

[0111] wherein f is the center resonance frequency, L is the inductance value when LC resonance notch processing is performed, and C is the capacitance value when LC resonance notch processing is performed.

[0112] To sum up, the method first acquires a closed-loop feedback signal; the closed-loop feedback signal is obtained by sampling an output signal of a high-voltage tank; then, a target feedback signal is obtained by filtering the closed-loop feedback signal with respect to a target power frequency; finally, the digital control module is subjected to feedback processing based on the target feedback signal. By filtering the closed-loop feedback signal with respect to the target power frequency and inputting the filtered closed-loop feedback signal to the digital control module for feedback, the method can achieve strong perturbation suppression and high precision for a high-voltage generator.

[0113] Figure 9 A structural block diagram of a computer device 900 is shown, which is an example of an embodiment of the present application. The computer device can be implemented as a server in the above-mentioned scheme of the present application. The computer device 900 includes a central processing unit (CPU) 901, a system memory 904 including a random access memory (RAM) 902 and a read-only memory (ROM) 903, and a system bus 905 connecting the system memory 904 and the central processing unit 901. The computer device 900 further includes a mass storage device 906 for storing an operating system 909, application programs 910, and other program modules 911.

[0114] The mass storage device 906 is connected to the central processing unit 901 through a mass storage controller (not shown) connected to the system bus 905. The mass storage device 906 and its associated computer readable medium provide nonvolatile storage for the computer device 900. That is, the mass storage device 906 can include a computer readable medium (not shown) such as a hard disk or a compact disc read-only memory (CD-ROM) drive.

[0115] Without loss of generality, the computer readable medium can include computer storage media and communication media. Computer storage media includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data. Computer storage media includes RAM, ROM, erasable programmable read only memory (EPROM), electrically-erasable programmable read-only memory (EEPROM), flash memory or other solid state memory technology, CD-ROM, digital versatile disks (DVD), or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices. Of course, those skilled in the art will recognize that the computer storage media described above can represent any type of computer readable medium for storing data that is accessible by a computer.

[0116] According to various embodiments of the present disclosure, the computer device 900 can also operate in a networking environment via the network 908 connected to the remote computer. That is, the computer device 900 can connect to the network 908 through the network interface unit 907 connected to the system bus 905, or other types of network or remote computer systems (not shown) using the network interface unit 907.

[0117] The memory also includes at least one computer program stored therein, which the central processing unit 901 executes to implement all or part of the steps of the methods shown in the various embodiments described above.

[0118] In an exemplary embodiment, a computer readable storage medium storing at least one computer program is also provided, the at least one computer program is loaded and executed by a processor to implement all or part of the steps in the above method. For example, the computer readable storage medium can be a Read-Only Memory (ROM), a Random Access Memory (RAM), a Compact Disc Read-Only Memory (CD-ROM), a magnetic tape, a floppy disk, and an optical data storage device, etc.

[0119] In an exemplary embodiment, a computer program product or computer program is also provided, the computer program product or computer program comprises computer instructions stored in a computer readable storage medium. The processor of the computer device reads the computer instructions from the computer readable storage medium, and the processor executes the computer instructions, so that the computer device executes all or part of the steps of the method shown in the above embodiments. Figure 2 In an exemplary embodiment, a computer program product or computer program is also provided, the computer program product or computer program comprises computer instructions stored in a computer readable storage medium. The processor of the computer device reads the computer instructions from the computer readable storage medium, and the processor executes the computer instructions, so that the computer device executes all or part of the steps of the method shown in the above embodiments.

[0120] Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. It is intended that the application be limited only by the scope of the claims, including all substitutes and equivalents thereof. The specification and examples are to be considered exemplary only, with the true scope and spirit of the application indicated by the following claims.

[0121] It is to be understood that the application is not limited to the precise construction described and as shown in the attached figures, and that various modifications and changes can be made by those skilled in the art without departing from the scope of the application. The scope of the application is to be limited only by the claims appended hereto.

Claims

1. A method for suppressing disturbances in a high-voltage generator, characterized in that, The method is applied to the digital control module of a high-voltage generator system; the high-voltage generator system also includes a high-voltage oil tank; The method includes: Obtain the closed-loop feedback signal; the closed-loop feedback signal is obtained by sampling the output signal of the high-pressure oil tank; For the target power frequency, the closed-loop feedback signal is filtered to obtain the target feedback signal; The digital control module is adjusted based on the target feedback signal.

2. The method according to claim 1, characterized in that, The method further includes: High-frequency disturbance suppression is applied to the input signal of the high-pressure oil tank.

3. The method according to claim 1, characterized in that, The step of filtering the closed-loop feedback signal to obtain the target feedback signal includes: The closed-loop feedback signal is subjected to active filtering to obtain the first feedback signal; The first feedback signal is frequency-selectively filtered and adjusted to obtain the target feedback signal.

4. The method according to claim 3, characterized in that, Before performing active filtering on the closed-loop feedback signal, the closed-loop feedback signal is amplified by an instrument.

5. The method according to claim 1, characterized in that, The high-voltage generator system also includes a DC bus and an inverter module; The method further includes: The input signal of the inverter module is subjected to LC resonance notch filtering by combining the target power frequency and the center resonant frequency; the center resonant frequency is used to indicate the suppression frequency of the LC resonance notch filtering.

6. The method according to claim 5, characterized in that, The combination of the target power frequency and the center resonant frequency includes: The target power frequency is the same as the center resonant frequency.

7. The method according to claim 6, characterized in that, The center resonant frequency is calculated using the following formula: Where f is the center resonant frequency, L is the inductance value when performing LC resonant notch filtering, and C is the capacitance value when performing LC resonant notch filtering.

8. A high-voltage generator disturbance suppression device, characterized in that, The device is applied to the digital control module of the high-voltage generator system; the high-voltage generator system also includes a high-voltage oil tank; The device includes: The data acquisition module is used to acquire the closed-loop feedback signal; the closed-loop feedback signal is obtained by sampling the output signal of the high-pressure oil tank. The filtering module is used to filter the closed-loop feedback signal for the target power frequency to obtain the target feedback signal. The feedback processing module is used to adjust the digital control module based on the target feedback signal.

9. A computer device, characterized in that, The computer device includes a processor and a memory, the memory storing at least one instruction, which is loaded and executed by the processor to implement the high-voltage generator disturbance suppression method as described in any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that, The storage medium stores at least one instruction, which is loaded and executed by a processor to implement the high-voltage generator disturbance suppression method as described in any one of claims 1 to 7.

Images