CN116133218A - High-voltage generator disturbance suppression method, device, equipment and storage medium - Google Patents
High-voltage generator disturbance suppression method, device, equipment and storage medium Download PDFInfo
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- CN116133218A CN116133218A CN202211740985.2A CN202211740985A CN116133218A CN 116133218 A CN116133218 A CN 116133218A CN 202211740985 A CN202211740985 A CN 202211740985A CN 116133218 A CN116133218 A CN 116133218A
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05G—X-RAY TECHNIQUE
- H05G1/00—X-ray apparatus involving X-ray tubes; Circuits therefor
- H05G1/08—Electrical details
- H05G1/10—Power supply arrangements for feeding the X-ray tube
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- H—ELECTRICITY
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- H05G—X-RAY TECHNIQUE
- H05G1/00—X-ray apparatus involving X-ray tubes; Circuits therefor
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Abstract
The application relates to a method, a device, equipment and a storage medium for suppressing disturbance of a high-voltage generator, in particular to the technical field of the high-voltage generator. 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 the high-pressure oil tank; filtering the closed loop feedback signal aiming at target power frequency to obtain a target feedback signal; based on the target feedback signal, the digital control module is adjusted. Based on the method, the method has strong pertinence and high precision when realizing the disturbance suppression function of the high-voltage generator.
Description
Technical Field
The application relates to the technical field of high-voltage generators, in particular to a method, a device, equipment and a storage medium for suppressing disturbance of a high-voltage generator.
Background
The high voltage generator is used as one of the core components of the X-ray detection, has great influence on the quality of the X-ray detection image, and the influence of ripples in the tube voltage kV and the tube current mA of the X-ray tube in the high voltage generator on the X-ray detection image is particularly serious.
In the high-voltage generator, after rectification, 2 times of power frequency (50/60 Hz) fluctuation exists in the direct-current bus, the fluctuation also becomes larger correspondingly along with the increase of load, and the fluctuation of the voltage on the bus can influence the fluctuation of the output voltage and current of the high-voltage generator after passing through the transformer. In addition, due to the circuit topology, an alternating voltage of power frequency (50/60 Hz) exists between the inversion cable and PE (ground wire), and because the tank body of the oil tank is connected with the PE, the inversion cable inside the oil tank and the tank form a magnetic field of power frequency (50/60 Hz), so that the feedback cable is coupled with disturbance of power frequency (50/60 Hz), and closed loop feedback control of kV and mA of the high-voltage generator is difficult to realize.
Disclosure of Invention
The application provides a high-voltage generator disturbance suppression method, device and equipment and a storage medium.
In one aspect, a method for high voltage generator disturbance rejection is provided, the method being applied to a digital control module of a high voltage generator system; the high pressure generator system further comprises a high pressure oil tank;
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 the high-pressure oil tank;
filtering the closed loop feedback signal aiming at target power frequency to obtain a target feedback signal;
and adjusting the digital control module based on the target feedback signal.
In yet another aspect, a high voltage generator disturbance rejection apparatus is provided for use with a digital control module of a high voltage generator system; the high pressure generator system further comprises a high pressure oil tank;
the device comprises:
the data acquisition module is used for acquiring a closed-loop feedback signal; the closed loop feedback signal is obtained by sampling an output signal of the high-pressure oil tank;
the filtering module is used for filtering the closed loop feedback signal aiming at target power frequency to obtain a target feedback signal;
and the feedback processing module is used for adjusting the digital control module based on the target feedback signal.
In one possible implementation, the input signal of the high-pressure tank is subjected to high-frequency disturbance rejection.
In one possible implementation manner, the filtering the closed loop feedback signal to obtain a target feedback signal includes:
performing active filtering processing on the closed loop feedback signal to obtain a first feedback signal;
and performing frequency-selecting filtering adjustment on the first feedback signal to obtain a target feedback signal.
In one possible implementation, the closed loop feedback signal is instrumented before being high pass filtered and low pass filtered.
In one possible implementation, the high voltage generator system further comprises a dc bus and an inverter module;
the apparatus further comprises:
carrying out LC resonance notch processing on the input signal of the inversion module by combining the target power frequency and the central resonance frequency; the center resonant frequency is used to indicate the rejection frequency of the LC resonance notch process.
In one possible implementation manner, the combining the target power frequency and the center resonance frequency includes:
the target power frequency is the same as the central resonance frequency.
In one possible implementation, the center resonant frequency is calculated using the formula:
where 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.
In yet another aspect, a computer device is provided that includes a processor and a memory having at least one instruction stored therein, the at least one instruction loaded and executed by the processor to implement the high voltage generator disturbance rejection method described above as being performed by a target processor.
In yet another aspect, a computer readable storage medium having stored therein at least one instruction loaded and executed by a processor to implement the above-described high voltage generator disturbance rejection method performed by a target processor is provided.
In yet another aspect, a computer program product or computer program is provided, the computer program product or computer program comprising 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 performs the above-described high voltage generator disturbance rejection method performed by the target processor.
The technical scheme that this application provided can include following beneficial effect:
firstly, acquiring a closed loop feedback signal; the closed loop feedback signal is obtained by sampling an output signal of the high-pressure oil tank; then, aiming at target power frequency, filtering the closed loop feedback signal to obtain a target feedback signal; and finally, based on the target feedback signal, carrying out feedback processing on the digital control module. The closed loop feedback signal of the target power frequency is filtered, and the filtered closed loop feedback signal is input to the digital control module for feedback, so that the pertinence is strong and the precision is high when the disturbance suppression of the high-voltage generator is realized.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram illustrating a structure of an X-ray high voltage generator system according to an exemplary embodiment.
FIG. 2 is a flow chart illustrating a method of high voltage generator disturbance rejection in accordance with an exemplary embodiment.
FIG. 3 is a flow chart illustrating a method of high voltage generator disturbance rejection in accordance with an exemplary embodiment.
Fig. 4 shows a schematic diagram of disturbance rejection for a high pressure tank according to an embodiment of the present application.
Fig. 5 shows a circuit example diagram of an instrument amplification circuit and an active filter circuit according to an embodiment of the present application.
Fig. 6 shows a schematic diagram of disturbance rejection on a dc bus according to an embodiment of the present application.
Fig. 7 shows a circuit example diagram of an LC resonance trap according to an embodiment of the present application.
Fig. 8 is a block diagram showing a structure of a disturbance suppression device of a high-voltage generator according to an exemplary embodiment.
Fig. 9 shows a block diagram of a computer device according to an exemplary embodiment of the present application.
Detailed Description
The following description of the embodiments of the present application will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
It should be understood that, in the embodiments of the present application, the "indication" may be a direct indication, an indirect indication, or an indication having an association relationship. For example, a indicates B, which may mean that a indicates B directly, e.g., B may be obtained by a; it may also indicate that a indicates B indirectly, e.g. a indicates C, B may be obtained by C; it may also be indicated that there is an association between a and B.
In the description of the embodiments of the present application, the term "corresponding" may indicate that there is a direct correspondence or an indirect correspondence between the two, or may indicate that there is an association between the two, or may indicate a relationship between the two and the indicated, configured, or the like.
In the embodiment of the present application, the "predefining" may be implemented by pre-storing corresponding codes, tables or other manners that may be used to indicate relevant information in devices (including, for example, terminal devices and network devices), and the specific implementation of the present application is not limited.
Fig. 1 is a schematic diagram illustrating a structure of an X-ray high voltage generator system according to an exemplary embodiment. As shown in fig. 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, where the control system further includes an input rectifying module, an inverter module, a control module, a filament module, and an auxiliary power module. The input side of the X-ray high-voltage generator system is commercial power alternating current input voltage.
The commercial power alternating current input voltage is input into a control system of an X-ray high-voltage generator system, the alternating current voltage is converted into direct current bus voltage after being input into a rectifying module, feedback signals of tube voltage kV and tube current mA are obtained after the direct current bus voltage passes through an inverting module, and the feedback signals of the tube voltage kV and the tube current mA are input into a high-voltage oil tank to obtain kV/mA feedback and are input into a digital control circuit of the system.
FIG. 2 is a flow chart illustrating a method of high voltage generator disturbance rejection in accordance with an exemplary embodiment. The method is applied to a digital control module of the high-voltage generator system; the high pressure generator system further includes a high pressure tank; the method comprises the following steps:
The X-ray is an electromagnetic wave with very short wavelength, has very large penetrating power, and can be applied to CT imaging and industrial flaw detection. In the laboratory, X-rays are generated by an X-ray tube in a high voltage generator, the X-ray tube being a vacuum tube with a cathode made of tungsten wire capable of emitting hot electrons when energized and an anode (target) made of a high melting point metal (typically tungsten, and materials such as iron, copper, nickel, etc. may also be used for the X-ray tube for crystal structure analysis). The high voltage generator bombards the target with high voltage acceleration electron beam of tens of thousands to hundreds of thousands volts, and X-ray can be emitted from the target.
In an X-ray tube, the electrical signals on the filament (including tube voltage kV and tube current mA) have a great influence on the imaging quality of the X-ray image. If there is a disturbance in the high voltage generator, it will have an effect on the tube voltage kV and tube current mA of the X-ray tube, and further affect the imaging quality of the X-ray image. Thus, there is a need to suppress disturbances present in the high voltage generator.
In order to effectively suppress the disturbance present in the high voltage generator, the location where the disturbance is present is first found. In the X-ray high-voltage generator system shown in fig. 1, due to the circuit topology, the inversion module is connected with the high-voltage oil tank through the inversion cable, and a power frequency (50/60 Hz) alternating voltage exists between the inversion cable and the ground wire PE, and due to the fact that the tank body of the high-voltage oil tank is connected with the ground wire PE, a part of inversion cable inside the oil tank and the tank body of the high-voltage oil tank form a power frequency (50/60 Hz) magnetic field. Because the high-voltage oil tank is connected with the control module through the feedback cable, a part of the feedback cable in the oil tank is coupled to the disturbance of the power frequency (50/60 Hz) generated by the power frequency (50/60 Hz) magnetic field, and the disturbance has great influence on the closed-loop feedback control of the tube voltage kV and the tube current mA of the high-voltage generator.
Thus, to suppress the disturbance, the electrical signal flowing over the feedback cable may be sampled first, i.e. the output signal of the high-pressure tank, to obtain a closed-loop feedback signal.
Because the disturbance is at the target power frequency, the closed loop feedback signal can be filtered for the target power frequency.
Optionally, a filter is used to filter the closed loop feedback signal, and the filter can be designed according to practical requirements.
After the closed-loop feedback signal is filtered to obtain a target feedback signal after disturbance is suppressed, the target feedback signal can be used as an input signal for closed-loop control of the digital control module. Since disturbance rejection has been performed on the target feedback signal, the digital control module is subject to reduced disturbance when performing closed loop control.
In summary, the method first acquires a closed loop feedback signal; the closed loop feedback signal is obtained by sampling an output signal of the high-pressure oil tank; then, aiming at target power frequency, filtering the closed loop feedback signal to obtain a target feedback signal; and finally, based on the target feedback signal, carrying out feedback processing on the digital control module. The closed loop feedback signal of the target power frequency is filtered, and the filtered closed loop feedback signal is input to the digital control module for feedback, so that the pertinence is strong and the precision is high when the disturbance suppression of the high-voltage generator is realized.
FIG. 3 is a flow chart illustrating a method of high voltage generator disturbance rejection in accordance with an exemplary embodiment. The method is applied to a digital control module of the high-voltage generator system; the high pressure generator system further includes a high pressure tank; the method comprises the following steps:
In an X-ray tube, the electrical signals on the filament (including tube voltage kV and tube current mA) have a great influence on the imaging quality of the X-ray image. If there is a disturbance in the high voltage generator, it will have an effect on the tube voltage kV and tube current mA of the X-ray tube, and further affect the imaging quality of the X-ray image. Thus, there is a need to suppress disturbances present in the high voltage generator.
The disturbance existing in the high-voltage generator is divided into high-frequency disturbance and low-frequency disturbance, and the acquisition frequency of the detector is limited when the X-ray image acquisition is carried out, so that the influence of the low-frequency disturbance in the high-voltage generator on the imaging quality of the X-ray image is larger.
In order to effectively suppress the low frequency disturbances present in the high voltage generator, the location where the disturbance is present is first found. In the X-ray high-voltage generator system shown in fig. 1, due to the circuit topology, the inversion module is connected with the high-voltage oil tank through the inversion cable, and a power frequency (50/60 Hz) alternating voltage exists between the inversion cable and the ground wire PE, and due to the fact that the tank body of the high-voltage oil tank is connected with the ground wire PE, a part of inversion cable inside the oil tank and the tank body of the high-voltage oil tank form a power frequency (50/60 Hz) magnetic field. Because the high-voltage oil tank is connected with the control module through the feedback cable, a part of the feedback cable in the oil tank is coupled to the disturbance of the power frequency (50/60 Hz) generated by the power frequency (50/60 Hz) magnetic field, and the disturbance has great influence on the closed-loop feedback control of the tube voltage kV and the tube current mA of the high-voltage generator. It should be noted that the inverter cable is connected to the feedback cable.
Thus, to suppress the disturbance, the electrical signal flowing over the feedback cable may be sampled first, i.e. the output signal of the high-pressure tank, to obtain a closed-loop feedback signal.
Fig. 4 shows a schematic diagram of disturbance rejection for a high pressure tank according to an embodiment of the present application. The high-pressure oil tank is subjected to disturbance suppression as follows.
Optionally, high-frequency disturbance rejection is performed on the input signal of the high-pressure tank.
Optionally, inside the high-pressure oil tank, a part of feedback cables inside the oil tank are wrapped by using a shielding copper net, two ends of the shielding copper net are connected with a ground wire PE (equivalent to the connection with a high-pressure oil tank body), and high-frequency disturbance suppression is performed on input signals of the high-pressure oil tank. The shielding copper net can effectively reduce high-frequency disturbance.
Optionally, the closed loop feedback signal is subjected to instrumentation amplification prior to active filtering of the closed loop feedback signal.
Optionally, an instrumentation amplification circuit is used to perform an instrumentation amplification process on the closed loop feedback signal.
Further, an active filter circuit is used to filter the closed loop feedback signal. The active filter can effectively limit the interference of the designated frequency (namely the target power frequency), so that the interference of the closed-loop feedback signal is less, the digital control module can be more accurate only when the closed-loop control is carried out through the target feedback signal, and the control algorithm can be better exerted.
Further, the closed loop feedback signal is subjected to active filtering processing, and a first feedback signal is obtained. The active filtering process includes high-pass filtering and low-pass filtering, which can limit the blocking frequency of the signal.
Further, the first feedback signal is subjected to frequency-selecting filtering adjustment to obtain a target feedback signal. By introducing frequency-selective filtering adjustment, the frequency-selective effect can be improved.
Alternatively, the negative feedback is achieved by connecting the output of the operational amplifier with the inverting input of the operational amplifier. The operational amplifier and the negative feedback are matched to provide the gain of the feedback loop and play a certain network isolation role for the circuit.
Fig. 5 shows a circuit example diagram of an instrument amplification circuit and an active filter circuit according to an embodiment of the present application. Wherein XBP1 represents a frequency characteristic tester.
After the closed-loop feedback signal is filtered to obtain a target feedback signal after disturbance is suppressed, the target feedback signal can be used as an input signal for closed-loop control of the digital control module.
The center resonant frequency is used to indicate the rejection frequency of the LC resonance notch process.
The X-ray high-voltage generator system shown in fig. 1 further includes a dc bus and an inverter module. After the commercial power is rectified by the input rectifying module, 2 times of fluctuation (namely disturbance) of power frequency (50/60 Hz) exists in the direct current bus, the fluctuation can be correspondingly increased along with the increase of loads, and the fluctuation of voltage on the direct current bus can cause the fluctuation of tube voltage kV and tube current mA of the high-voltage generator after passing through a transformer in the high-voltage oil tank.
Fig. 6 shows a schematic diagram of disturbance rejection on a dc bus according to an embodiment of the present application. The specific description of disturbance suppression for the dc bus is as follows.
Optionally, an LC resonant trap is transplanted into the rectified dc bus to perform LC resonant trap processing on the input signal of the inverter module, so as to filter the ripple.
Optionally, the target power frequency is the same as the center resonant frequency.
Optionally, the resonant frequency of the LC resonant trap is controlled by matching different inductance values and capacitance values, so that the central resonant frequency of the LC resonant trap is equal to the fluctuation frequency (i.e., the target power frequency) to be suppressed.
Alternatively, the center resonant frequency is calculated using the formula:
where 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.
Alternatively, the characteristic impedance Z is calculated using the formula below, which is small when the LC resonance trap is at the center resonance frequency:
fig. 7 shows a circuit example diagram of an LC resonance trap according to an embodiment of the present application. Wherein vdc+ represents a positive electrode, VDC-represents a negative electrode, vin represents an input voltage, vout represents an output voltage, L1 represents an inductance, and C1 and C2 represent capacitances.
In summary, the method first acquires a closed loop feedback signal; the closed loop feedback signal is obtained by sampling an output signal of the high-pressure oil tank; then, aiming at target power frequency, filtering the closed loop feedback signal to obtain a target feedback signal; and finally, based on the target feedback signal, carrying out feedback processing on the digital control module. The closed loop feedback signal of the target power frequency is filtered, and the filtered closed loop feedback signal is input to the digital control module for feedback, so that the pertinence is strong and the precision is high when the disturbance suppression of the high-voltage generator is realized.
Fig. 8 is a block diagram showing a structure of a disturbance suppression device of a high-voltage generator according to an exemplary embodiment. The high-voltage generator disturbance suppression device is applied to a digital control module of a high-voltage generator system; the high pressure generator system further includes a high pressure tank;
the device comprises:
a data acquisition module 801, configured to acquire a closed-loop feedback signal; the closed loop feedback signal is obtained by sampling an output signal of the high-pressure oil tank;
the filtering module 802 is configured to perform filtering processing on the closed loop feedback signal according to a target power frequency to obtain a target feedback signal;
a feedback processing module 803 for adjusting the digital control module based on the target feedback signal.
In one possible implementation, the input signal of the high-pressure tank is subjected to high-frequency disturbance rejection.
In one possible implementation, the filtering the closed loop feedback signal to obtain a target feedback signal includes:
performing active filtering processing on the closed loop feedback signal to obtain a first feedback signal;
and performing frequency-selecting filtering adjustment on the first feedback signal to obtain a target feedback signal.
In one possible implementation, the closed loop feedback signal is instrumented prior to active filtering.
In one possible implementation, the high voltage generator system further comprises a dc bus and an inverter module;
the apparatus further comprises:
carrying out LC resonance notch processing on the input signal of the inversion module by combining the target power frequency and the central resonance frequency; the center resonant frequency is used to indicate the rejection frequency of the LC resonance notch process.
In one possible implementation, the combining the target power frequency with the center resonant frequency includes:
the target power frequency is the same as the center resonant frequency.
In one possible implementation, the center resonant frequency is calculated using the formula:
where 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.
In summary, the method first acquires a closed loop feedback signal; the closed loop feedback signal is obtained by sampling an output signal of the high-pressure oil tank; then, aiming at target power frequency, filtering the closed loop feedback signal to obtain a target feedback signal; and finally, based on the target feedback signal, carrying out feedback processing on the digital control module. The closed loop feedback signal of the target power frequency is filtered, and the filtered closed loop feedback signal is input to the digital control module for feedback, so that the pertinence is strong and the precision is high when the disturbance suppression of the high-voltage generator is realized.
Fig. 9 shows a block diagram of a computer device 900 according to an exemplary embodiment of the present application. The computer device may be implemented as a server in the above-described aspects of the present application. The computer apparatus 900 includes a central processing unit (Central Processing Unit, CPU) 901, a system Memory 904 including a random access Memory (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 also includes a mass storage device 906 for storing an operating system 909, application programs 910, and other program modules 911.
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 media provide non-volatile storage for the computer device 900. That is, the mass storage device 906 may include a computer readable medium (not shown) such as a hard disk or a compact disk-Only (CD-ROM) drive.
Without loss of generality, the computer readable medium may include computer storage media and communication media. Computer storage media includes volatile and nonvolatile, 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 register (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 (Digital Versatile Disc, DVD) or other optical 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 medium is not limited to the ones described above. The system memory 904 and mass storage 906 described above may be collectively referred to as memory.
The computer device 900 may also operate in accordance with various embodiments of the present disclosure through a network, such as the internet, to a remote computer on the network. I.e., the computer device 900 may be connected to the network 908 via a network interface unit 907 coupled to the system bus 905, or alternatively, the network interface unit 907 may be used to connect to other types of networks or remote computer systems (not shown).
The memory further comprises at least one computer program stored in the memory, and the central processing unit 901 implements all or part of the steps of the methods shown in the above embodiments by executing the at least one computer program.
In an exemplary embodiment, a computer readable storage medium is also provided for storing at least one computer program that is loaded and executed by a processor to implement all or part of the steps of the above method. For example, the computer readable storage medium may be Read-Only Memory (ROM), random-access Memory (Random Access Memory, RAM), compact disc Read-Only Memory (CD-ROM), magnetic tape, floppy disk, optical data storage device, and the like.
In an exemplary embodiment, a computer program product or a computer program is also provided, the computer program product or computer program comprising 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 executes the computer instructions to cause the computer device to perform all or part of the steps of the method described above in connection with the embodiment of fig. 2.
Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the application following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the application pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.
It is to be understood that the present application is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the application is limited only by the appended claims.
Claims (10)
1. A method for suppressing disturbance of a high-voltage generator, which is characterized in that the method is applied to a digital control module of the high-voltage generator system; the high pressure generator system further comprises a high pressure oil tank;
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 the high-pressure oil tank;
filtering the closed loop feedback signal aiming at target power frequency to obtain a target feedback signal;
and adjusting the digital control module based on the target feedback signal.
2. The method according to claim 1, wherein the method further comprises:
and performing high-frequency disturbance suppression on the input signal of the high-pressure oil tank.
3. The method of claim 1, wherein filtering the closed loop feedback signal to obtain a target feedback signal comprises:
performing active filtering processing on the closed loop feedback signal to obtain a first feedback signal;
and performing frequency-selecting filtering adjustment on the first feedback signal to obtain a target feedback signal.
4. A method according to claim 3, characterized in that the closed loop feedback signal is subjected to an instrumentation amplification process before being subjected to an active filtering process.
5. The method of claim 1, wherein the high voltage generator system further comprises a dc bus and an inverter module;
the method further comprises the steps of:
carrying out LC resonance notch processing on the input signal of the inversion module by combining the target power frequency and the central resonance frequency; the center resonant frequency is used to indicate the rejection frequency of the LC resonance notch process.
6. The method of claim 5, wherein said combining said target power frequency with a center resonant frequency comprises:
the target power frequency is the same as the central resonance frequency.
7. The method of claim 6, wherein the center resonant frequency is calculated using the formula:
where 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.
8. A high voltage generator disturbance rejection device, characterized in that the device is applied to a digital control module of a high voltage generator system; the high pressure generator system further comprises a high pressure oil tank;
the device comprises:
the data acquisition module is used for acquiring a closed-loop feedback signal; the closed loop feedback signal is obtained by sampling an output signal of the high-pressure oil tank;
the filtering module is used for filtering the closed loop feedback signal aiming at target power frequency to obtain a target feedback signal;
and the feedback processing module is used for adjusting the digital control module based on the target feedback signal.
9. A computer device comprising a processor and a memory having stored therein at least one instruction that is loaded and executed by the processor to implement the high voltage generator disturbance rejection method of any of claims 1 to 7.
10. A computer readable storage medium having stored therein at least one instruction that is loaded and executed by a processor to implement the high voltage generator disturbance rejection method of any one of claims 1 to 7.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211740985.2A CN116133218A (en) | 2022-12-31 | 2022-12-31 | High-voltage generator disturbance suppression method, device, equipment and storage medium |
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| CN202211740985.2A CN116133218A (en) | 2022-12-31 | 2022-12-31 | High-voltage generator disturbance suppression method, device, equipment and storage medium |
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