Pulse power supply current feedback control system and related device

Abstract

The invention discloses a pulse power supply current feedback control system and a related device. The system comprises a current acquisition module used for acquiring real-time current data of a pulse power supply; the main control module is connected with the current acquisition module, receives the real-time current data acquired by the current acquisition module, determines a current stability demand based on the real-time current data, and adjusts a control signal output by at least one output end according to the current stability demand; the adjusting module is respectively connected with each output end of the main control module, and the adjusting module is used for adjusting the output signal based on the control signal output by the main control module; and the feedback control module is respectively connected with the adjusting module and the pulse power supply, and drives the pulse power supply to be switched to a working mode corresponding to the adjusting mode of the adjusted output signal based on the output signal adjusted by the adjusting module. The output signal can be adjusted in a targeted manner, and the current stability of the pulse power supply can be accurately controlled according to the actual situation.

Description

Technical Field

[0001] The present application relates to the technical field of power detection, and in particular to a pulse power supply current feedback control system and related devices. Background Art

[0002] Pulse power supplies are widely used in industries such as industry and scientific research. The stability of their current output has a significant impact on the operation of the equipment. Existing pulse power supply systems often use traditional open-loop control or simple feedback control, which makes it difficult for pulse power supply systems to accurately adapt to actual needs during actual use, causing large fluctuations in current and affecting the stability of the system. Therefore, how to effectively balance the energy output of pulse power supplies and improve the stability of pulse power supplies is a problem that needs to be solved urgently. Summary of the invention

[0003] The main technical problem solved by the present application is to provide a pulse power supply current feedback control system and related devices, which can realize efficient and stable control of the pulse power supply.

[0004] In order to solve the above technical problems, a technical solution adopted in the present application is: to provide a pulse power supply current feedback control system, the system includes a current acquisition module, a main control module, an adjustment module and a feedback control module, wherein the current acquisition module is used to collect real-time current data of the pulse power supply; the main control module is connected to the current acquisition module, receives the real-time current data collected by the current acquisition module, determines the current stability requirement based on the real-time current data, and adjusts the control signal output by at least one output terminal according to the current stability requirement; wherein the current stability requirement includes a preset current fluctuation threshold range; the adjustment module is respectively connected to each output terminal of the main control module, and the adjustment module is used to adjust the output signal based on the control signal output by the main control module; the feedback control module is respectively connected to the adjustment module and the pulse power supply, and the feedback control module drives the pulse power supply to switch to a working mode corresponding to the adjustment mode of the adjusted output signal based on the output signal adjusted by the adjustment module.

[0005] Among them, at least one output end includes a first output end and a second output end, the first output end outputs a first control signal, and the second output end outputs a second control signal; the adjustment module includes a driving unit and a logic control unit; the driving unit is electrically connected to the first output end, the second output end and the current adjustment unit respectively; the driving unit is used to drive the current adjustment unit to switch to the first adjustment mode based on the first control signal adjusted by the main control module, or to drive the current adjustment unit to switch to the second adjustment mode based on the second control signal adjusted by the main control module; the logic control unit is connected to the first output end and the second output end respectively, and the logic control unit is used to adjust the output signal based on the first control signal adjusted by the main control module or the second control signal adjusted by the main control module.

[0006] Among them, the feedback control module drives the pulse power supply to switch to the working mode corresponding to the adjustment mode of the adjusted output signal based on the output signal adjusted by the adjustment module, including: the feedback control module drives the pulse power supply to switch to the first working mode corresponding to the first adjustment mode based on the adjusted output signal, or switches to the second working mode corresponding to the second adjustment mode.

[0007] Among them, the first adjustment mode includes a fine adjustment mode, and the second adjustment mode includes a fast adjustment mode; the first working mode includes a low ripple mode, and the second working mode includes a high response mode; the main control module is also used to: in response to the current fluctuation amplitude of the pulse power supply being less than the first fluctuation threshold, adjust the first control signal output by the first output end, and keep the second control signal output by the second output end unchanged; in response to the current fluctuation amplitude of the pulse power supply being greater than the second fluctuation threshold, adjust the second control signal output by the second output end, and keep the first control signal output by the first output end unchanged; wherein, the first fluctuation threshold is less than or equal to the second fluctuation threshold.

[0008] Among them, in response to the current fluctuation amplitude of the pulse power supply being less than the first fluctuation threshold, the first control signal output by the first output terminal is adjusted, and the second control signal output by the second output terminal is kept unchanged, including: in response to the current fluctuation amplitude of the pulse power supply being less than the first fluctuation threshold, the first output terminal outputs a first pulse signal, and the second output terminal keeps outputting a low-level signal.

[0009] Among them, in response to the current fluctuation amplitude of the pulse power supply being greater than the second fluctuation threshold, the second control signal output by the second output terminal is adjusted, and the first control signal output by the first output terminal is kept unchanged, including: in response to the current fluctuation amplitude of the pulse power supply being greater than the second fluctuation threshold, the second output terminal outputs a second pulse signal, and the first output terminal keeps outputting a low-level signal.

[0010] Among them, the output signal includes a first output signal and a second output signal, the logic control unit includes a first input terminal and a second input terminal, the first input terminal is connected to the first output terminal, and the second input terminal is connected to the second output terminal, the logic control unit also includes a third output terminal and a fourth output terminal connected to the feedback control module, the logic control unit outputs the first output signal from the third output terminal based on the adjusted first control signal, so that the feedback control module drives the pulse power supply to switch to the first working mode, and the logic control unit outputs the second output signal from the fourth output terminal based on the adjusted second control signal, so that the feedback control module drives the pulse power supply to switch to the second working mode.

[0011] The logic control unit includes a D trigger, a first input interface of the D trigger is electrically connected to the first output end, a second input interface is connected to the second output end, and a third output interface and a fourth output interface are connected to the feedback control module.

[0012] Among them, the pulse power supply includes a main power module and an auxiliary power module, the feedback control module includes a driving chip, a first power tube and a second power tube, the driving chip is electrically connected to the control end of the main control module, the main power module and the auxiliary power module respectively, the control end of the first power tube is connected to the logic control unit, the first communication end of the first power tube is connected to the main power module, the second communication end of the first power tube is connected to the driving chip, the control end of the second power tube is connected to the logic control unit, the first communication end of the second power tube is connected to the auxiliary power module, and the second communication end of the second power tube is connected to the driving chip.

[0013] In order to solve the above technical problems, another technical solution adopted in the present application is: to provide a pulse generating device, including any of the above-mentioned pulse power supply current feedback control systems.

[0014] The beneficial effects of the present application are as follows: Different from the prior art, the present application collects the current data of the pulse power supply in real time through the current acquisition module, provides the system with real-time current information, and enables the system to timely understand the working status of the pulse power supply. The main control module determines the current stability requirement based on the real-time current data, and adjusts the output signal in a targeted manner, and can accurately control the current stability of the pulse power supply according to the actual situation, ensuring that the output current of the pulse power supply meets the expected stability requirements. The adjustment module adjusts the output signal according to the control signal output by the main control module, so that the system can flexibly adjust the output signal according to different current stability requirements to adapt to different working scenarios. The feedback control module drives the pulse power supply to switch the working mode based on the output signal adjusted by the adjustment module, forming a closed-loop feedback control system. This closed-loop control mechanism can continuously adjust the working mode of the pulse power supply according to the adjusted output signal, effectively improving the stability and reliability of the pulse power supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the framework of an embodiment of the pulse power supply current feedback control system of the present application.

[0016] Figure 2 It is a schematic diagram of the framework of an embodiment of a pulse generating device of the present application. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and effect of the present application clearer and more specific, the present application is further described in detail below with reference to the accompanying drawings and examples.

[0018] In the following description, reference is made to "some embodiments", which describe a subset of all possible embodiments, but it is understood that "some embodiments" may be the same subset or different subsets of all possible embodiments, and may be combined with each other without conflict. Unless otherwise defined, all technical and scientific terms used in the embodiments of the present application have the same meaning as those commonly understood by those skilled in the art of the technical field of the embodiments of the present application. The terms used in the embodiments of the present application are only for the purpose of describing the embodiments of the present application and are not intended to limit the present application.

[0019] In addition, the term "more" in this article means two or more than two. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features.

[0020] In particle accelerators and other related fields, the stability of the pulse current of the kicker power supply (pulse impact power supply) is crucial to the stable transmission of the beam and the smooth progress of the experiment. The existing pulse power supply control system has deficiencies in current stability control and cannot accurately control the current, which makes the experimental results easily affected. In addition, the coordination between the modules of the system is poor, the hardware correlation is low, and it is difficult to achieve efficient and stable control, which cannot meet the growing demand for high-precision experiments.

[0021] To this end, the applicant conceived a pulse power supply current feedback control system, see Figure 1 , Figure 1 It is a schematic diagram of the framework of an embodiment of the pulse power supply current feedback control system of the present application.

[0022] like Figure 1 As shown, the pulse power supply current feedback control system 10 of the present application includes: a current acquisition module 11, a main control module 12, an adjustment module 13 and a feedback control module 14, wherein the current acquisition module 11 is used to collect real-time current data of the pulse power supply; the main control module 12 is connected to the current acquisition module 11, receives the real-time current data collected by the current acquisition module 11, determines the current stability requirement based on the real-time current data, and adjusts the control signal output by at least one output terminal according to the current stability requirement; the adjustment module 13 is respectively connected to each output terminal of the main control module 12, and the adjustment module 13 is used to adjust the output signal based on the control signal output by the main control module 12; the feedback control module 14 is respectively connected to the adjustment module 13 and the pulse power supply 15, and the feedback control module 14 drives the pulse power supply 15 to switch to a working mode corresponding to the adjustment mode of the adjusted output signal based on the output signal adjusted by the adjustment module 13.

[0023] Among them, the current acquisition module 11 can be a current transformer, and the main control module 12 can be a module composed of a microprocessor, a programmable logic device, etc., which can analyze and process the collected current data and generate corresponding control signals according to preset algorithms and thresholds.

[0024] In some embodiments, the main control module 12 may include integrated chips such as a field programmable gate array (FPGA), an application-specific integrated circuit (ASIC), or a non-integrated control circuit with control and data processing functions, such as a microcontroller of model STM32F407. These chips or circuits can efficiently process complex control algorithms and data operations to ensure the real-time performance and accuracy of the system.

[0025] In some embodiments, the main control module 12 may determine the current stability requirement based on the real-time current data collected by the current acquisition module 11, the current stability threshold preset by the system, and the experimental requirements, or may determine the current stability requirement based on the clock information and preset conditions, or may determine the current stability requirement based on the user's selection, etc. It should be noted that the current stability requirement may be preset information such as the current fluctuation threshold range, and the main control module 12 may determine the adjustment strategy based on the comparison between the real-time current data and the preset fluctuation threshold, and the main control module 12 adjusts the voltage signal outputted by it based on the adjustment strategy.

[0026] The above scheme collects the current data of the pulse power supply 15 in real time through the current acquisition module 11, provides the system with real-time current information, and enables the system to timely understand the working status of the pulse power supply 15. The main control module 12 determines the current stability requirement based on the real-time current data, and adjusts the output signal in a targeted manner, and can accurately control the current stability of the pulse power supply 15 according to the actual situation, ensuring that the output current of the pulse power supply 15 meets the expected stability requirements. The adjustment module 13 adjusts the output signal according to the control signal output by the main control module 12, so that the system can flexibly adjust the output signal according to different current stability requirements to adapt to different working scenarios. The feedback control module 14 drives the pulse power supply 15 to switch the working mode based on the output signal adjusted by the adjustment module 13, forming a closed-loop feedback control system. The closed-loop control mechanism can continuously adjust the working mode of the pulse power supply 15 according to the adjusted output signal, effectively improving the stability and reliability of the pulse power supply 15.

[0027] In some embodiments, at least one output end includes a first output end and a second output end, the first output end outputs a first control signal, and the second output end outputs a second control signal; the regulation module 13 includes a driving unit and a logic control unit; the driving unit is electrically connected to the first output end, the second output end and the current regulation unit respectively; the driving unit is used to drive the current regulation unit to switch to the first regulation mode based on the first control signal adjusted by the main control module 12, or to drive the current regulation unit to switch to the second regulation mode based on the second control signal adjusted by the main control module 12; the logic control unit is connected to the first output end and the second output end respectively, and the logic control unit is used to adjust the output signal based on the first control signal adjusted by the main control module 12 or the second control signal adjusted by the main control module 12.

[0028] In some specific embodiments, the driving unit can be a circuit module composed of an amplifier, a driver, etc., which can amplify and convert the control signal output by the main control module 12 to drive the current regulating unit to work. For example, when the driving unit receives the first control signal output by the main control module 12, the signal is amplified by the internal amplifier circuit to drive the motor or electromagnet and other actuators in the current regulating unit to operate, thereby realizing the switching of the regulation mode. The logic control unit can be a circuit module composed of a logic gate circuit, a trigger, etc., which can perform logical operations and processing on the input control signal and output the corresponding output signal. For example, the logic control unit can be triggered according to the rising edge or falling edge of the input first control signal or the second control signal to output different output signals.

[0029] In other specific embodiments, the driving unit includes a bridge driving circuit, which can switch the working state of the current regulating unit according to the states of the first output terminal and the second output terminal. The bridge driving circuit can provide a larger driving power to ensure that the current regulating unit switches the regulation mode quickly and accurately.

[0030] In some specific embodiments, the main control module 12 adjusts the first control signal of the first output terminal based on the current stability requirement, which can be that the main control module 12 changes the level of the first control signal based on the current stability requirement, for example, the first control signal is adjusted from a low level to a high level, or the voltage value of the first control signal is changed, or the output signal of the first output terminal is changed from non-existent to present, etc., so that the output voltage of the first output terminal is adjusted and changed; the main control module 12 adjusts the second control signal of the second output terminal based on the current stability requirement, which can be that the main control module 12 changes the level of the second control signal based on the current stability requirement, for example, the second control signal is adjusted from a low level to a high level, or the voltage value of the second control signal is changed, or the output signal of the second output terminal is changed from non-existent to present, etc., so that the output voltage of the second output terminal is adjusted and changed. In this embodiment, by detecting the changes of the first control signal and the second control signal, and adjusting and changing the output signal of the logic control unit according to these changes, the feedback control module 14 is controlled to switch the state of the pulse power supply 15; and the main control module 12 is controlled to switch the state of the current regulating unit according to these changes.

[0031] In some embodiments, the feedback control module 14 drives the pulse power supply 15 to switch to the working mode corresponding to the adjustment mode of the adjusted output signal based on the output signal adjusted by the adjustment module 13, including: the feedback control module 14 drives the pulse power supply 15 to switch to the first working mode corresponding to the first adjustment mode, or switches to the second working mode corresponding to the second adjustment mode based on the adjusted output signal. For example, in the first working mode, the pulse power supply 15 outputs a stable low-frequency pulse current, which is suitable for some experimental scenarios with low requirements for the current change rate; in the second working mode, a high-frequency stable pulse current is output to meet the experimental requirements with high requirements for the current change rate.

[0032] In some specific embodiments, the feedback control module 14 may be a circuit module composed of a driver chip, a power tube, etc., which can convert the third control signal output by the logic control unit into a power signal for driving the pulse power supply 15 to work. For example, when the feedback control module 14 receives the first output signal output by the logic control unit, the driver chip controls the first power tube to turn on, so that the pulse power supply 15 enters the first working mode. The model of the driver chip may be IR2110, and the model of the power tube may be MOSFET IRF540N.

[0033] In some application scenarios, the main control module 12 can determine the current stability requirement based on the current fluctuation amplitude. When the current fluctuation amplitude is large, the main control module 12 controls the drive unit to control the current regulation unit to switch to the fast regulation mode by adjusting its output voltage signal, and controls the feedback control module 14 to drive the pulse power supply 15 to switch to the high response mode; when the current fluctuation amplitude is small, the main control module 12 controls the current regulation unit to switch to the fine regulation mode, and controls the pulse power supply 15 to switch to the low ripple mode.

[0034] The current regulating unit may include regulating elements such as variable resistors and inductor regulators, and different regulating modes may be achieved by switching different combinations of regulating elements or parameters of regulating elements; or the current regulating unit may include only one regulating element, and switch to different regulating states under different current stabilization requirements; or the current regulating unit may include multiple regulating elements of different types, and at least two regulating modes may be achieved by combining them.

[0035] In some embodiments, the first adjustment mode includes a fine adjustment mode, and the second adjustment mode includes a fast adjustment mode; the first working mode includes a low ripple mode, and the second working mode includes a high response mode; the main control module 12 is also used to: in response to the current fluctuation amplitude of the pulse power supply 15 being less than the first fluctuation threshold, adjust the first control signal output by the first output terminal, and keep the second control signal output by the second output terminal unchanged; in response to the current fluctuation amplitude of the pulse power supply 15 being greater than the second fluctuation threshold, adjust the second control signal output by the second output terminal, and keep the first control signal output by the first output terminal unchanged; wherein the first fluctuation threshold is less than or equal to the second fluctuation threshold. For example, when the current fluctuation amplitude is small, the system switches to the fine adjustment mode and the low ripple mode to precisely fine-tune the current and reduce the current ripple; when the current fluctuation amplitude is large, quickly switch to the fast adjustment mode and the high response mode to quickly stabilize the current.

[0036] In some embodiments, in response to the current fluctuation amplitude of the pulse power supply 15 being less than the first fluctuation threshold, adjusting the first control signal output by the first output terminal, and keeping the second control signal output by the second output terminal unchanged, including: in response to the current fluctuation amplitude of the pulse power supply 15 being less than the first fluctuation threshold, the first output terminal outputs a first pulse signal, and the second output terminal keeps outputting a low-level signal. Using pulse signals to achieve changes in control signals has the advantages of stable signal transmission, easy generation and control, and can reduce system power consumption.

[0037] In some embodiments, in response to the current fluctuation amplitude of the pulse power supply 15 being greater than the second fluctuation threshold, the second control signal output by the second output terminal is adjusted, and the first control signal output by the first output terminal is kept unchanged, including: in response to the current fluctuation amplitude of the pulse power supply 15 being greater than the second fluctuation threshold, the second output terminal outputs a second pulse signal, and the first output terminal keeps outputting a low-level signal. Using pulse signals to achieve changes in control signals has the advantages of stable signal transmission, easy generation and control, and can reduce system power consumption.

[0038] The pulse signal is used to realize the change of the first control signal and the second control signal. The signal is simple and easy to generate, the control is simple, the cost is low, the precision is high, and the main control module 12 does not need to continuously output a high-level signal, which can save circuit power consumption. At the same time, the characteristics of the pulse signal make the anti-interference ability stronger during the signal transmission process, ensuring the stability of the system control.

[0039] In some embodiments, the output signal includes a first output signal and a second output signal, the logic control unit includes a first input terminal and a second input terminal, the first input terminal is connected to the first output terminal, and the second input terminal is connected to the second output terminal, the logic control unit also includes a third output terminal and a fourth output terminal connected to the feedback control module 14, the logic control unit outputs the first output signal from the third output terminal based on the adjusted first control signal, so that the feedback control module 14 drives the pulse power supply 15 to switch to the first working mode, and the logic control unit outputs the second output signal from the fourth output terminal based on the adjusted second control signal, so that the feedback control module 14 drives the pulse power supply 15 to switch to the second working mode.

[0040] In some specific embodiments, the first output signal is a first high-level signal, and the second output signal is a second high-level signal. The logic control unit outputs the first high-level signal from the third output terminal based on the first pulse signal, so that the feedback control module 14 drives the pulse power supply 15 to switch to the first working mode. The logic control unit outputs the second high-level signal from the fourth output terminal based on the second pulse signal, so that the feedback control module 14 drives the pulse power supply 15 to switch to the second working mode. The signal is converted by triggering, thereby improving the stability and reliability of the control of the logic control unit.

[0041] In some embodiments, the logic control unit includes a D flip-flop, the first input interface of the D flip-flop is electrically connected to the first output terminal, the second input interface is connected to the second output terminal, and the third output interface and the fourth output interface are connected to the feedback control module 14. The first input interface of the D flip-flop corresponds to the first input terminal of the logic control unit, the second input interface corresponds to the second input terminal, and the third output interface and the fourth output interface correspond to the third output terminal and the fourth output terminal respectively. The D flip-flop, i.e., a data flip-flop, or Data Flip-Flop, has the characteristics of simple structure and stable triggering, and can effectively realize reliable switching of working modes.

[0042] In some embodiments, the logic control unit also includes: a delay circuit, which is electrically connected to the first output terminal, the second output terminal and the clock terminal of the D trigger respectively, and the delay circuit delays the first pulse signal or the second pulse signal and supplies it to the D trigger as a clock signal.

[0043] This embodiment utilizes a delay circuit to obtain a delay signal of a pulse signal, and uses the delay signal as a clock signal of a D-type flip-flop, so that the first high-level signal output by the D-type flip-flop is delayed relative to the first pulse signal, and the second high-level signal output by the trigger circuit is delayed relative to the second pulse signal. The delay here refers to the rising edge moment of the high-level signal.

[0044] In this way, on the one hand, the present embodiment does not require an additional clock source, and can generate a clock signal through the first pulse signal or the second pulse signal, with a simple structure, low cost, and high control accuracy for the feedback control module 14; on the other hand, it can improve the ability of the D flip-flop to successfully trigger the generation of the first high-level signal or the second high-level signal when a rising edge of a clock signal arrives, without the need for an additional rising edge; compared to conventional periodic clock signals, the present invention only generates a clock signal based on a pulse output by the front-end circuit, and triggers the generation of a high-level signal only when switching is required, with higher control accuracy.

[0045] In other embodiments, the clock signal may be directly obtained according to the pulse signal or directly input, which may save the delay circuit but may increase the complexity and cost of the system.

[0046] In some embodiments, the delay circuit includes a NAND gate, wherein the two input terminals of the NAND gate are electrically connected to the first output terminal and the second output terminal respectively, and the output terminal of the NAND gate is electrically connected to the clock terminal of the D flip-flop. When the two input terminals of the NAND gate have different inputs, its output terminal outputs a high-level signal, and when the two input terminals have the same inputs, its output terminal outputs a low-level signal. The NAND gate can not only generate a delayed clock signal, but also generate a corresponding clock signal based on the change of one of the first control signal and the second control signal. The NAND gate has a simple structure, and while realizing the delay function, it can also perform logical processing on the input signal to improve the reliability of the system.

[0047] In other embodiments, other logic gate circuits may be used to implement the functions implemented by the above-mentioned NAND gate, or other combinations of logic gate circuits and trigger circuits may be used to implement the functions of the above-mentioned embodiments, such as using logic gate circuits such as NOR gates and XOR gates for combined design.

[0048] In some embodiments, the logic control unit further includes: a switch circuit, a control end of the switch circuit is electrically connected to the delay circuit, a first communication end of the switch circuit is electrically connected to the control end of the main control module 12, and a second communication end of the switch circuit is electrically connected to the feedback control module 14; wherein the switch circuit is turned off at the rising edge of the clock signal to turn off the output of the modulation signal of the main control module 12 to the feedback control module 14, and the switch circuit is turned on at the falling edge of the clock signal to restore the output of the modulation signal of the main control module 12 to the feedback control module 14. Specifically, the control end of the switch circuit is electrically connected to the output end of the delay circuit.

[0049] The control end of the main control module 12 of this embodiment can also be electrically connected to the feedback control module 14. In at least one of the above-mentioned working modes, the main control module 12 controls the feedback control module 14 to adjust the power output parameters in each working mode, such as voltage amplitude, pulse frequency, etc., to further optimize the current output and meet the needs of different operations.

[0050] The modulation signal of the main control module 12 may include a pulse width modulation (PWM) signal, and the output characteristics of the pulse power supply 15 are adjusted by adjusting the duty cycle of the PWM signal.

[0051] In this embodiment, the electrical connection between the main control module 12 and the feedback control module 14 is switched on and off by the switch circuit, and the output of the modulation signal of the main control module 12 to the feedback control module 14 can be turned off by the switch circuit at the rising edge of the clock signal, and the output of the modulation signal of the main control module 12 to the feedback control module 14 can be restored at the falling edge of the clock signal. In this way, during the working mode switching process, the modulation signal can be not output to the feedback control module 14, and the modulation signal can be output to the feedback control module 14 only after the switching is completed, which can save power consumption and reduce the probability of the power tubes used to control different working modes in the feedback control module 14 being turned on at the same time, thereby reducing the transient current of the power tube and improving the reliability of the circuit.

[0052] In some embodiments, the switching circuit includes a transmission gate, the input end of the transmission gate is electrically connected to the main control module 12, the output end of the transmission gate is electrically connected to the feedback control module 14, the control end of the transmission gate is connected to the clock signal, and the transmission gate is turned on at a high level and turned off at a low level.

[0053] In some application scenarios, when the rising edge of the signal output by the clock end arrives, the D flip-flop converts the first pulse signal into a high-level signal delayed compared to the first pulse signal A and output from the third output end, and the fourth output end maintains a low-level signal; at the same time, the high level of the clock signal controls the transmission gate to disconnect, so that the PWM1 output by the transmission gate stops being output to the feedback control module 14.

[0054] In another application scenario, when the rising edge of the signal output from the clock end arrives, the D flip-flop converts the second pulse signal into a high-level signal delayed compared to the second pulse signal and output from the fourth output end, and the third output end maintains a low-level signal; at the same time, the high level of the clock signal controls the transmission gate to disconnect, so that the PWM1 output by the transmission gate stops being output to the feedback control module 14.

[0055] In some embodiments, the pulse power supply 15 includes a main power module and an auxiliary power module, and the feedback control module 14 includes a driving chip, a first power tube and a second power tube. The driving chip is electrically connected to the control end of the main control module 12, the main power module and the auxiliary power module respectively, the control end of the first power tube is connected to the logic control unit, the first communication end of the first power tube is connected to the main power module, the second communication end of the first power tube is connected to the driving chip, the control end of the second power tube is connected to the logic control unit, the first communication end of the second power tube is connected to the auxiliary power module, and the second communication end of the second power tube is connected to the driving chip.

[0056] Specifically, the control end of the first power tube is electrically connected to the third output end of the logic control unit, and the control end of the second power tube is electrically connected to the fourth output end of the logic control unit. The main power module and the auxiliary power module can be different types of power supplies, such as the main power module is a high voltage power supply, the auxiliary power module is a low voltage power supply, or the main power module is a DC power supply, the auxiliary power module is a pulse power supply 15, etc. The power supply end of the driver chip is used to access the power supply signal; the output end of the driver chip is connected to the main power module and the auxiliary power module through a coil; the feedback end of the driver chip is connected to the second communication end of the first power tube and the second communication end of the second power tube.

[0057] In some specific embodiments, the feedback control module 14 is composed of a driver chip and two power tubes (i.e., a first power tube and a second power tube). The on and off of the two power tubes are controlled by the state of the first high-level signal and the second high-level signal, so as to realize the switching of the working state of the pulse power supply 15 by using one drive, which can improve the problem of the two power tubes being turned on at the same time. The shutdown can switch the corresponding power working mode according to the switching state of the current regulation unit, which can improve the problem of the power working mode switching logic abnormality caused by program errors and making it inconsistent with the current regulation unit, and the input of the logic control unit is high impedance, which will not affect the switching of the current regulation unit; the DIM pin of the driver chip mainly controls the size of the conduction current according to the duty cycle of the PWM1 signal, and the DIM pin is controlled by the PWM1 signal. The PWM1 signal disconnects the transmission gate when the power working mode is switched, so that the driver chip is in a state of no current output. When the current regulation unit is switched, the transmission gate remains in the on state, which is the normal operation of the power output.

[0058] In some specific embodiments, in response to system power-on, the main control module 12 controls the current regulation unit to be in an initial regulation mode, and controls the feedback control module 14 not to work; in response to the end of power-on, the main control module 12 determines whether it is necessary to switch the regulation mode of the current regulation unit based on the current stability requirement; in response to the need to switch the current regulation unit, the main control module 12 controls the current regulation unit to switch to the corresponding regulation mode, and controls the pulse power supply 15 to switch to the corresponding working mode; in response to the need not to switch the current regulation unit, the main control module 12 controls the pulse power supply 15 group to switch to the default working mode.

[0059] When the device is powered on, it enters the initial regulation mode by default, and the output signals of the first output terminal and the second output terminal are kept at a low level to keep the drive unit from outputting; the feedback control module 14 can be kept in a non-working state according to the duty cycle or voltage of the PWM1 signal; when the current sensor detects that the current fluctuation amplitude exceeds the preset value, the first output terminal outputs a pulse, and the second output terminal is at a low level, and the drive unit will output a corresponding drive signal to switch the current regulation unit to a suitable regulation mode; when the current fluctuation amplitude changes from large to small and is lower than the preset value, the first output terminal is at a low level, and the second output terminal outputs a pulse, and the drive unit will output a reverse drive signal to switch the current regulation unit back to the initial regulation mode or other suitable regulation modes.

[0060] For ease of understanding, the following is a complete workflow description of a pulse current feedback control system of an embodiment. First, the device starts to power on, and the system enters the initial state by default. At this time, the current regulation unit maintains the initial regulation mode, and the feedback control module 14 remains in the non-working state according to the duty cycle or voltage of PWM1. After the device is powered on, it is determined whether to switch the current regulation unit according to the data collected by the current sensor. If the current regulation unit needs to be switched, the voltage signal output by the first output terminal and the second output terminal is controlled to switch the state of the current regulation unit. At the same time, the logic control unit switches the corresponding working mode of the pulse power supply 15 according to the voltage signal output by the first output terminal and the second output terminal, and then adjusts the duty cycle or voltage of PWM1 according to the current data to adjust the output parameters of the pulse power supply 15; if the current regulation unit does not need to be switched, since the power-on default is the initial regulation mode, the power-on state of the voltage signal output by the first output terminal and the second output terminal is low level, and after the logic control unit is powered on, the output of the third output terminal is defaulted to low level by the pull-down resistor. According to the above truth state table, the state remains default, and the state of the pulse power supply 15 defaults to the default working mode, and then the duty cycle or voltage of PWM1 is adjusted according to the current data to adjust the output parameters of the pulse power supply 15.

[0061] In the above scheme, the main control module 12 selectively adjusts the first control signal output from the first output end or the second control signal output from the second output end based on the current stability requirement, and the driving unit drives the current regulation unit to switch to the first regulation mode based on the adjusted first control signal, or drives the current regulation unit to switch to the second regulation mode based on the adjusted second control signal; at the same time, the logic control circuit controls the feedback control module 14 to drive the pulse power supply 15 to switch to the first working mode corresponding to the first regulation mode based on the adjusted first control signal, or controls the feedback control module 14 to drive the pulse power supply 15 to switch to the second working mode corresponding to the second regulation mode based on the adjusted second control signal. In this way, the signal of the control driving unit driving the current regulating unit to switch the regulating mode and the signal of the control feedback control module 14 driving the pulse power supply 15 group to switch the working mode are the same signal output from the same port, which can realize the association and synchronization of the regulating mode switching and the working mode switching, and reduce the hardware cost; and the change of the first output signal is associated with the first regulating mode and the first working mode, and the change of the second output signal is associated with the second regulating mode and the second working mode, which can improve the accuracy of the association between the regulating mode and the corresponding working mode; therefore, the present invention can improve the stability of the current of the pulse power supply 15, realize the efficient coordination between the functional modules of the system, improve the overall performance of the system, and meet the strict requirements of the pulse power supply 15 in the fields of particle accelerators and the like. In addition, by controlling the current regulating unit through the logic control circuit and switching the state of the pulse power supply 15, it can not only reduce the complexity of the driving circuit, but also reduce the power consumption, reduce the occupation of signal transmission pin resources, and effectively reduce the equipment cost.

[0062] See also Figure 2 , Figure 2 It is a schematic diagram of the framework of an embodiment of a pulse generating device of the present application. The pulse generating device 20 includes a pulse power supply current feedback control system 10 of any of the above embodiments.

[0063] The above scheme collects the current data of the pulse power supply in real time through the current acquisition module, provides the system with real-time current information, and enables the system to understand the working status of the pulse power supply in a timely manner. The main control module determines the current stability requirement based on the real-time current data, and adjusts the output signal in a targeted manner. It can accurately control the current stability of the pulse power supply according to the actual situation, and ensure that the output current of the pulse power supply meets the expected stability requirements. The adjustment module adjusts the output signal according to the control signal output by the main control module, so that the system can flexibly adjust the output signal according to different current stability requirements to adapt to different working scenarios. The feedback control module drives the pulse power supply to switch the working mode based on the output signal adjusted by the adjustment module, forming a closed-loop feedback control system. This closed-loop control mechanism can continuously adjust the working mode of the pulse power supply according to the adjusted output signal, effectively improving the stability and reliability of the pulse power supply.

[0064] The above description is only an implementation method of the present application and does not limit the scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the protection scope of the present application.

Claims

1. A pulse power supply current feedback control system, characterized in that: include: Current acquisition module: used to collect real-time current data of the pulse power supply; A main control module: connected to the current acquisition module, receiving real-time current data acquired by the current acquisition module, determining the current stability requirement based on the real-time current data, and adjusting the control signal output by at least one output terminal according to the current stability requirement; wherein the current stability requirement includes a preset current fluctuation threshold range; an adjustment module, connected to each output terminal of the main control module respectively, and the adjustment module is used to adjust the output signal based on the control signal output by the main control module; Feedback control module: connected to the regulating module and the pulse power supply respectively, and the feedback control module drives the pulse power supply to switch to a working mode corresponding to the adjustment mode of the adjusted output signal based on the output signal adjusted by the regulating module.

2. The pulse power supply current feedback control system according to claim 1, characterized in that: The at least one output end includes a first output end and a second output end, the first output end outputs a first control signal, and the second output end outputs a second control signal; the regulating module includes a driving unit and a logic control unit; the driving unit is electrically connected to the first output end, the second output end and the current regulating unit respectively; the driving unit is used to drive the current regulating unit to switch to the first regulating mode based on the first control signal adjusted by the main control module, or to drive the current regulating unit to switch to the second regulating mode based on the second control signal adjusted by the main control module; the logic control unit is connected to the first output end and the second output end respectively, and the logic control unit is used to adjust the output signal based on the first control signal adjusted by the main control module or the second control signal adjusted by the main control module.

3. The pulse power supply current feedback control system according to claim 2, characterized in that: The feedback control module drives the pulse power supply to switch to the working mode corresponding to the adjustment mode of the adjusted output signal based on the output signal adjusted by the adjustment module, including: the feedback control module drives the pulse power supply to switch to the first working mode corresponding to the first adjustment mode, or switches to the second working mode corresponding to the second adjustment mode based on the adjusted output signal.

4. The pulse power supply current feedback control system according to claim 3, characterized in that: The first adjustment mode includes a fine adjustment mode, and the second adjustment mode includes a fast adjustment mode; the first working mode includes a low ripple mode, and the second working mode includes a high response mode; the main control module is further used for: in response to the current fluctuation amplitude of the pulse power supply being less than a first fluctuation threshold, adjusting the first control signal output by the first output end, and keeping the second control signal output by the second output end unchanged; In response to the current fluctuation amplitude of the pulse power supply being greater than a second fluctuation threshold, the second control signal outputted from the second output terminal is adjusted, and the first control signal outputted from the first output terminal is kept unchanged; wherein the first fluctuation threshold is less than or equal to the second fluctuation threshold.

5. The pulse power supply current feedback control system according to claim 4, characterized in that: In response to the current fluctuation amplitude of the pulse power supply being less than a first fluctuation threshold, the first control signal output by the first output terminal is adjusted, and the second control signal output by the second output terminal is kept unchanged, including: in response to the current fluctuation amplitude of the pulse power supply being less than the first fluctuation threshold, the first output terminal outputs a first pulse signal, and the second output terminal keeps outputting a low-level signal.

6. The pulse power supply current feedback control system according to claim 4 or 5, characterized in that: In response to the current fluctuation amplitude of the pulse power supply being greater than the second fluctuation threshold, the second control signal output by the second output terminal is adjusted, and the first control signal output by the first output terminal is kept unchanged, including: in response to the current fluctuation amplitude of the pulse power supply being greater than the second fluctuation threshold, the second output terminal outputs a second pulse signal, and the first output terminal keeps outputting a low level signal.

7. The pulse power supply current feedback control system according to claim 3, characterized in that: The output signal includes a first output signal and a second output signal, the logic control unit includes a first input terminal and a second input terminal, the first input terminal is connected to the first output terminal, and the second input terminal is connected to the second output terminal, the logic control unit also includes a third output terminal and a fourth output terminal connected to the feedback control module, the logic control unit outputs a first output signal from the third output terminal based on the adjusted first control signal, so that the feedback control module drives the pulse power supply to switch to the first working mode, and the logic control unit outputs a second output signal from the fourth output terminal based on the adjusted second control signal, so that the feedback control module drives the pulse power supply to switch to the second working mode.

8. The pulse power supply current feedback control system according to claim 7, characterized in that: The logic control unit includes a D flip-flop, a first input interface of the D flip-flop is electrically connected to the first output end, a second input interface is connected to the second output end, and a third output interface and a fourth output interface are connected to the feedback control module.

9. The pulse power supply current feedback control system according to claim 2, characterized in that: The pulse power supply includes a main power module and an auxiliary power module, the feedback control module includes a driving chip, a first power tube and a second power tube, the driving chip is electrically connected to the control end of the main control module, the main power module and the auxiliary power module respectively, the control end of the first power tube is connected to the logic control unit, the first communication end of the first power tube is connected to the main power module, the second communication end of the first power tube is connected to the driving chip, the control end of the second power tube is connected to the logic control unit, the first communication end of the second power tube is connected to the auxiliary power module, and the second communication end of the second power tube is connected to the driving chip.

10. A pulse generating device, characterized in that: A pulse power supply current feedback control system comprising any one of claims 1-9.

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