A Pulse Power Supply Current Feedback Control System and Related Devices

Abstract

The present application discloses a pulse power supply current feedback control system and related devices. The system includes: a current acquisition module: used to acquire real-time current data of the pulse power supply; a main control module: connected to the current acquisition module, receiving the 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 from at least one output terminal according to the current stability requirement; an adjustment module, 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; a feedback control module: respectively connected to the adjustment module and the pulse power supply, and 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. It can adjust the output signal specifically and accurately control the current stability of the pulse power supply according to the actual situation.

Description

Technical Field

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

[0002] Pulse power supplies are widely used in industrial, scientific research and other fields, and the stability of their current output has a significant impact on the operation effect of the equipment. Existing pulse power supply systems often adopt traditional open-loop control or simple feedback control, making it difficult for the pulse power supply system to accurately adapt to actual needs during actual use, resulting in large fluctuations in current and affecting the stability of the system. Therefore, how to effectively balance the energy output of the pulse power supply and improve the stability of the pulse power supply is an urgent problem to be solved at present. Summary of the Invention

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

[0004] To solve the above technical problem, a technical solution adopted by the present application is: to provide a pulse power supply current feedback control system, which includes a current acquisition module, a main control module, an adjustment module and a feedback control module. Among them, 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 the 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 terminal includes a first output terminal and a second output terminal. The first output terminal outputs a first control signal, and the second output terminal outputs a second control signal; the adjustment module includes a driving unit and a logic control unit; the driving unit is respectively electrically connected to the first output terminal, the second output terminal and the current adjustment unit; 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 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 respectively connected to the first output terminal and the second output terminal, 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 adjusted output signal of 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 switch 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 further configured 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 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 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; where 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, adjusting the first control signal output by the first output terminal and keeping the second control signal output by the second output terminal unchanged includes: 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, adjusting the second control signal output by the second output terminal and keeping the first control signal output by the first output terminal unchanged includes: 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, the second input terminal is connected to the second output terminal, the logic control unit further 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] Among them, 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.

[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 transistor, and a second power transistor. The driving chip is electrically connected to the control terminal of the main control module, the main power module, and the auxiliary power module respectively. The control terminal of the first power transistor is connected to the logic control unit. The first communication terminal of the first power transistor is connected to the main power module. The second communication terminal of the first power transistor is connected to the driving chip. The control terminal of the second power transistor is connected to the logic control unit. The first communication terminal of the second power transistor is connected to the auxiliary power module. The second communication terminal of the second power transistor is connected to the driving chip.

[0013] To solve the above technical problems, another technical solution adopted by this application is: to provide a pulse generating device, including the pulse power supply current feedback control system of any one of the above.

[0014] The beneficial effects of this application are: Different from the prior art, this application collects the current data of the pulse power supply in real time through the current acquisition module, providing real-time current information for the system, enabling the system to timely understand the working state of the pulse power supply. The main control module determines the current stability requirements based on the real-time current data and adjusts the output signal accordingly, being able to accurately control the current stability of the pulse power supply according to the actual situation to 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, enabling the system to 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. Description of the Drawings

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

[0016] Figure 2 is a framework schematic diagram of an embodiment of the pulse generating device of this application. Detailed Embodiments

[0017] To make the purpose, technical solutions, and effects of this application clearer and more definite, the following further elaborates on this application with reference to the accompanying drawings and by way of examples.

[0018] In the following description, reference is made to "some embodiments", which describe a subset of all possible embodiments. However, 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 commonly understood by those skilled in the technical field to which the embodiments of the present application belong. 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, "plurality" herein means two or more than two. Further, the terms "first" and "second" are used for descriptive purposes only and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features.

[0020] In related fields such as particle accelerators, the stability of the pulsed current of a Kicker power supply (pulsed impact power supply) is crucial for the stable transmission of the beam current and the smooth progress of experiments. Existing pulsed power supply control systems have deficiencies in current stability control, unable to accurately regulate the current, resulting in the experimental results being easily affected. Moreover, the coordination between the various modules of the system is poor, the hardware correlation is low, it is difficult to achieve efficient and stable control, and it cannot meet the growing demand for high-precision experiments.

[0021] Therefore, the applicant conceived a pulsed power supply current feedback control system. Please refer to Figure 1 , Figure 1 which is a schematic framework diagram of an embodiment of the pulsed power supply current feedback control system of the present application.

[0022] As Figure 1 shown, the pulsed 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. Among them, the current acquisition module 11 is used to acquire real-time current data of the pulsed power supply; the main control module 12 is connected to the current acquisition module 11, receives the real-time current data acquired 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 pulsed power supply 15, and the feedback control module 14 drives the pulsed power supply 15 to switch to the working mode corresponding to the adjustment mode of the adjusted output signal based on the adjusted output signal of 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 acquired 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, Field - Programmable Gate Array), an application - specific integrated circuit (ASIC, Application - Specific Integrated Circuit), 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, ensuring the real - time performance and accuracy of the system.

[0025] In some embodiments, the main control module 12 can 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 experimental requirements, etc., or can determine the current stability requirement based on clock information and preset conditions, or based on user selection, etc. It should be noted that the current stability requirement can be preset information such as a current fluctuation threshold range. The main control module 12 can 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 output voltage signal based on the adjustment strategy.

[0026] In the above solution, the current acquisition module 11 collects the current data of the pulse power supply 15 in real time, providing real - time current information for the system, enabling the system to timely understand the working state 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 accordingly, being able to accurately control the current stability of the pulse power supply 15 according to the actual situation to ensure 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, enabling the system to 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 terminal includes a first output terminal and a second output terminal. The first output terminal outputs a first control signal, and the second output terminal outputs a second control signal. The adjustment module 13 includes a driving unit and a logic control unit. The driving unit is electrically connected to the first output terminal, the second output terminal, and the current adjustment unit respectively. The driving unit is configured 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 12, or drive the current adjustment unit to switch to the second adjustment mode based on the second control signal adjusted by the main control module 12. The logic control unit is connected to the first output terminal and the second output terminal respectively. The logic control unit is configured 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 may 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 adjustment unit to work. For example, when the driving unit receives the first control signal output by the main control module 12, it amplifies the signal through the internal amplifier circuit to drive the actuating elements such as the motor or electromagnet in the current adjustment unit to act, so as to realize the switching of the adjustment mode. The logic control unit may be a circuit module composed of logic gate circuits, flip-flops, etc., which can perform logical operations and processing on the input control signal and output the corresponding output signal. For example, in the logic control unit, different output signals can be output according to the rising edge or falling edge of the input first control signal or second control signal.

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

[0030] In some specific embodiments, the main control module 12 adjusts the first control signal at the first output end based on the current stability requirement. This 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 at the first output end changes from none to some, etc., so that the output voltage at the first output end is adjusted and changed. The main control module 12 adjusts the second control signal at the second output end based on the current stability requirement. This 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 at the second output end changes from none to some, etc., so that the output voltage at the second output end is adjusted and changed. In this embodiment, by detecting the changes in 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 state switching of the pulse power supply 15 is controlled by the feedback control module 14; and the state switching of the current adjustment unit is controlled by the main control module 12 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 adjusted output signal of 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 switch to the second working mode corresponding to the second adjustment mode. For example, in the first working mode, the pulse power supply 15 outputs a stable low-frequency pulsed current, which is suitable for some experimental scenarios with relatively low requirements for the current change rate; in the second working mode, a high-frequency stable pulsed current is output to meet the experimental requirements with relatively high requirements for the current change rate.

[0032] In some specific embodiments, the feedback control module 14 can be a circuit module composed of a driving 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 driving chip controls the first power tube to conduct, so that the pulse power supply 15 enters the first working mode. The model of the driving chip can be IR2110, and the model of the power tube can 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 adjustment unit to switch to the fast adjustment 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 adjustment unit to switch to the fine adjustment mode, and controls the pulse power supply 15 to switch to the low ripple mode.

[0034] The current adjustment unit may include adjustment elements such as variable resistors and inductance regulators, and different adjustment modes are achieved by switching different combinations of adjustment elements or the parameters of the adjustment elements; or the current adjustment unit may include only one adjustment element and switch to different adjustment states under different current stability requirements; or the current adjustment unit may include multiple different types of adjustment elements, and at least two adjustment modes are achieved through combination.

[0035] In some embodiments, the first adjustment mode includes the fine adjustment mode, and the second adjustment mode includes the fast adjustment mode; the first working mode includes the low ripple mode, and the second working mode includes the high response mode; the main control module 12 is further configured 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 perform precise fine-tuning of the current and reduce the current ripple; when the current fluctuation amplitude is large, it quickly switches 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 includes: 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 the pulse signal to achieve the change of the control signal has the advantages of stable signal transmission, easy generation and control, and can reduce the system power consumption at the same time.

[0037] In some embodiments, in response to the current fluctuation amplitude of the pulse power supply 15 being greater than the second fluctuation threshold, adjusting the second control signal output by the second output terminal and keeping the first control signal output by the first output terminal unchanged includes: 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 at the same time.

[0038] Using pulse signals to achieve changes in the first control signal and the second control signal, the signals are simple to generate, easy to control, low in cost, high in precision, and the main control module 12 does not need to continuously output high-level signals, which can save circuit power consumption. At the same time, the characteristics of pulse signals make the anti-interference ability stronger during signal transmission, ensuring the stability of system control.

[0039] In some embodiments, the output signals include 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, the second input terminal is connected to the second output terminal, the logic control unit further includes a third output terminal and a fourth output terminal connected to the feedback control module 14, and the logic control unit outputs the first output signal from the third output terminal based on the adjusted first control signal to enable the feedback control module 14 to drive 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 to enable the feedback control module 14 to drive 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, 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 to enable the feedback control module 14 to drive the pulse power supply 15 to switch to the first working mode, and the logic control unit outputs the second high-level signal from the fourth output terminal based on the second pulse signal to enable the feedback control module 14 to drive the pulse power supply 15 to switch to the second working mode. By triggering the signal conversion, the stability and reliability of the control of the logic control unit are improved.

[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, namely the data flip-flop, or Data Flip-Flop, has the characteristics of simple structure and stable triggering, and can effectively realize the reliable switching of the working mode.

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

[0043] In this embodiment, the delay circuit can obtain the time-delay signal of the pulse signal, and use this time-delay signal as the clock signal of the D flip-flop, so that the first high-level signal output by the D 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. Here, the delay refers to the rising edge moment of the high-level signal.

[0044] In this way, on the one hand, this embodiment does not require an additional clock source, and can generate a clock signal through the first pulse signal or the second pulse signal. It has a simple structure, low cost, and high control accuracy for the feedback control module 14. On the other hand, it can improve the successful triggering of the D flip-flop to generate the first high-level signal or the second high-level signal when the rising edge of a clock signal arrives, without the need for an additional rising edge. Compared with the conventional periodic clock signal, the present invention generates a clock signal only based on a single 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 can also be directly obtained according to the above-mentioned pulse signal or directly input the clock signal, which can 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. 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. Among them, when the two input terminals of the NAND gate input different signals, its output terminal outputs a high-level signal; when the two input terminals input the same signal, its output terminal outputs a low-level signal. Through the NAND gate, not only can a delayed clock signal be generated, but also a corresponding clock signal can be generated when one of the first control signal and the second control signal changes. The NAND gate has a simple structure. While realizing the delay function, it can also perform logical processing on the input signal, improving the reliability of the system.

[0047] In other embodiments, other logic gate circuits can be used to implement the functions implemented by the above NAND gate, or other combinations of logic gate circuits and trigger circuits can be used to implement the functions of the above embodiments. For example, a combination design can be carried out using logic gate circuits such as NOR gates and XOR gates.

[0048] In some embodiments, the logic control unit further includes: a switch circuit. The control terminal of the switch circuit is electrically connected to the delay circuit, the first communication terminal of the switch circuit is electrically connected to the control terminal of the main control module 12, and the second communication terminal of the switch circuit is electrically connected to the feedback control module 14. Among them, 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 resume the output of the modulation signal of the main control module 12 to the feedback control module 14. Specifically, the control terminal of the switch circuit is electrically connected to the output terminal of the delay circuit.

[0049] The control terminal of the main control module 12 in this embodiment can also be electrically connected to the feedback control module 14. In at least one of the above 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., so as to further optimize the current output and meet the requirements of different operations.

[0050] Among them, the modulation signal of the main control module 12 can 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 turned on and off through a switching circuit, and the output of the modulation signal of the main control module 12 to the feedback control module 14 can be turned off at the rising edge of the clock signal through the switching circuit, 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 is not output to the feedback control module 14, and after the switching is completed, the modulation signal is output to the feedback control module 14, which can save power consumption and reduce the probability of simultaneous conduction of the power transistors used to control different working modes in the feedback control module 14, thereby reducing the transient current of the power transistors 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 at the clock terminal of the D flip-flop arrives, the first pulse signal is converted into a high-level signal delayed compared to the first pulse signal A and output from the third output terminal, and the fourth output terminal 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 at the clock terminal of the D flip-flop arrives, the second pulse signal is converted into a high-level signal delayed compared to the second pulse signal and output from the fourth output terminal, and the third output terminal 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 supply module and an auxiliary power supply module. The feedback control module 14 includes a driving chip, a first power transistor, and a second power transistor. The driving chip is electrically connected to the control terminal of the main control module 12, the main power supply module, and the auxiliary power supply module respectively. The control terminal of the first power transistor is connected to the logic control unit, the first communication terminal of the first power transistor is connected to the main power supply module, the second communication terminal of the first power transistor is connected to the driving chip, the control terminal of the second power transistor is connected to the logic control unit, the first communication terminal of the second power transistor is connected to the auxiliary power supply module, and the second communication terminal of the second power transistor is connected to the driving chip.

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

[0057] In some specific embodiments, the feedback control module 14 is composed of a drive chip and two power transistors (i.e., the first power transistor and the second power transistor). The on and off of the two power transistors are controlled by the states 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 with one-way drive, which can improve the problem of the two power transistors being turned on simultaneously. The off state can be switched to the corresponding power supply working mode according to the switching state of the current regulation unit, which can improve the problem that the switching logic of the power supply working mode caused by program errors is abnormal and does not correspond to the current regulation unit. And the input of the logic control unit is of high impedance and will not affect the switching of the current regulation unit; the DIM pin of the drive chip mainly controls the magnitude of the conduction current according to the duty cycle of the PWM1 signal. The DIM pin is controlled by the PWM1 signal. The PWM1 signal makes it disconnected when the power supply working mode is switched by the transmission gate, so that the drive chip is in a state of no current output. When the current regulation unit completes the switching, the transmission gate remains in the conducting state and the power supply outputs normally.

[0058] In some specific embodiments, in response to the system power-on, the main control module 12 controls the current regulation unit to be in the initial regulation mode and controls the feedback control module 14 not to work; in response to the end of the 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 and starts up, it defaults to the initial adjustment mode. The output signals of the first output terminal and the second output terminal remain low to keep the drive unit from outputting. The feedback control module 14 can stay in the non-operating state according to the duty cycle of the PWM1 signal or the voltage. 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. The drive unit will output a corresponding drive signal to switch the current adjustment unit to an appropriate adjustment mode. When the current fluctuation amplitude decreases 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. The drive unit will output a reverse drive signal to switch the current adjustment unit back to the initial adjustment mode or other appropriate adjustment modes.

[0060] For easy understanding, the following is a complete description of the working process of a pulse current feedback control system in an embodiment. First, the device starts to be powered on. The system defaults to the initial state. At this time, the current adjustment unit maintains the initial adjustment mode. The feedback control module 14 stays in the non-operating state according to the duty cycle of PWM1 or the voltage. After the device is powered on, it judges whether to switch the current adjustment unit according to the data collected by the current sensor. If it is necessary to switch the current adjustment unit, it controls the voltage signals output by the first output terminal and the second output terminal to switch the state of the current adjustment unit. At the same time, the logic control unit switches the working mode of the corresponding pulse power supply 15 according to the voltage signals output by the first output terminal and the second output terminal. Subsequently, it adjusts the duty cycle of PWM1 or the voltage according to the current data, etc., to adjust the output parameters of the pulse power supply 15. If it is not necessary to switch the current adjustment unit, since the power-on defaults to the initial adjustment mode, the voltage signals output by the first output terminal and the second output terminal are both low in the power-on state. After the logic control unit is powered on, the third output terminal outputs a low level by default due to the pull-down resistor. According to the above truth table, the state remains the default, and the state of the pulse power supply 15 defaults to the default working mode. Then, it adjusts the duty cycle of PWM1 or the voltage according to the current data, etc., to adjust the output parameters of the pulse power supply 15.

[0061] In the above solution, the main control module 12 selectively adjusts the first control signal output from its first output terminal or the second control signal output from its second output terminal based on the current stability requirement. The driving unit drives the current regulating unit to switch to the first regulation mode based on the adjusted first control signal, or drives the current regulating 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 for controlling the driving unit to drive the current regulating unit to switch the regulation mode and the signal for controlling the feedback control module 14 to drive 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 regulation mode switch and the working mode switch, reduce the hardware cost; and the change of the first output signal is associated with the first regulation mode and the first working mode, and the change of the second output signal is associated with the second regulation mode and the second working mode, which can improve the association accuracy between the regulation 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 cooperation between the functional modules of the system, improve the overall performance of the system, and meet the strict requirements for the pulse power supply 15 in fields such as particle accelerators. In addition, by using the logic control circuit to control the current regulating unit and switch the state of the pulse power supply 15 at the same time, not only can the complexity of the driving circuit be reduced, but also the power consumption can be reduced, the occupation of signal transmission pin resources can be reduced, and the equipment cost can be effectively reduced.

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

[0063] In the above solution, the current acquisition module collects the current data of the pulse power supply in real time, providing real-time current information for the system, enabling the system to timely understand the working state 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 accordingly, capable of precisely controlling the current stability of the pulse power supply according to the actual situation to 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, enabling the system to 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 the implementation mode of the present application and does not limit the scope of the present application. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present application, or directly or indirectly applied to other related technical fields, shall be equally included in the protection scope of the present application.

Claims

1. A pulse power supply current feedback control system, characterized in that The system includes: a current acquisition module for acquiring real-time current data of the pulse power supply; a main control module connected to the current acquisition module, receiving the real-time current data acquired by the current acquisition module, determining a current stability requirement based on the real-time current data, and adjusting a control signal output from 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 respectively connected to each output terminal of the main control module, and the adjustment module is used to adjust an output signal based on the control signal output by the main control module; a feedback control module respectively connected to the adjustment module and the pulse power supply; The adjustment module includes a driving unit and a logic control unit. 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; 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 terminal of the main control module, and a second input interface is connected to the second output terminal of the main control module; The feedback control module drives the pulse power supply to switch to a low-ripple mode corresponding to a fine adjustment mode or to a high-response mode corresponding to a fast adjustment mode based on the adjusted output signal; The main control module is further configured to, in response to the current fluctuation amplitude of the pulse power supply being less than a first fluctuation threshold, adjust the first control signal output from the first output terminal to drive the system to switch to the low-ripple mode; in response to the current fluctuation amplitude of the pulse power supply being greater than a second fluctuation threshold, adjust the control signal output from the second output terminal to drive the system to switch to the high-response mode; wherein, the first fluctuation threshold is less than or equal to the second fluctuation threshold.

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

3. The pulse power supply current feedback control system according to claim 2, characterized in that, The main control module is further configured to: in response to the current fluctuation amplitude of the pulse power supply being less than a first fluctuation threshold, adjust the first control signal output from the first output terminal, and keep the second control signal output from the second output terminal unchanged; In response to the current fluctuation amplitude of the pulse power supply being greater than a second fluctuation threshold, adjust the second control signal output from the second output terminal, and keep the first control signal output from the first output terminal unchanged.

4. The pulse power supply current feedback control system according to claim 3, wherein Adjusting the first control signal output by the first output terminal and keeping the second control signal output by the second output terminal unchanged when the current fluctuation amplitude of the pulse power supply is less than a first fluctuation threshold includes: 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.

5. The pulse power supply current feedback control system according to claim 3 or 4, characterized in that, Adjusting the second control signal output by the second output terminal and keeping the first control signal output by the first output terminal unchanged when the current fluctuation amplitude of the pulse power supply is greater than a second fluctuation threshold includes: 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.

6. The pulse power supply current feedback control system according to claim 2, 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 further 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 low-ripple mode. 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 high-response mode.

7. The pulse power supply current feedback control system according to claim 6, characterized in that The third output interface and the fourth output interface of the D flip-flop are connected to the feedback control module.

8. The pulse power supply current feedback control system according to claim 2, wherein The pulse power supply includes a main power module and an auxiliary power module. The feedback control module includes a drive chip, a first power transistor, and a second power transistor. The drive chip is electrically connected to the control terminal of the main control module, the main power module, and the auxiliary power module respectively. The control terminal of the first power transistor is connected to the logic control unit. The first communication terminal of the first power transistor is connected to the main power module. The second communication terminal of the first power transistor is connected to the drive chip. The control terminal of the second power transistor is connected to the logic control unit. The first communication terminal of the second power transistor is connected to the auxiliary power module. The second communication terminal of the second power transistor is connected to the drive chip.

9. A pulse generating device, characterized in that, Including the pulse power supply current feedback control system according to any one of claims 1-8.

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