Method for prolonging circuit current response time

Abstract

The invention belongs to the technical field of loop control circuits, and particularly relates to a method for prolonging circuit current response time, which comprises the following steps of: 1, theoretically analyzing dynamic response of a system; step 2, adjusting resistance and capacitance values of peripheral circuits of the operational amplifier; step 3, adjusting the capacitance value of C4; step 4, adjusting the values of C2, C3 and R3; step 5, evaluating circuit performance and stability; step 6, finely adjusting the element value; and step 7, optimizing parameter setting of the main operational amplifier U2. Through theoretical analysis, circuit optimization and actual test, the dynamic response capability of the circuit is improved, the capacitance value of an operational amplifier peripheral circuit and C4 and the numerical values of C2, C3 and R3 are adjusted to improve the stability, the circuit performance is evaluated, elements are finely tuned, the parameters of a main operational amplifier U2 are optimized to improve the current response time, the noise and imbalance of a feedback loop operational amplifier U4 are reduced, the normal work of the system is ensured, and the reliability of the system is improved. Experimental testing and feedback adjustment enable the circuit to reach an optimal working state, and current response time and stability are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of loop control circuits, and in particular relates to a method for improving circuit current response time. Background Art

[0002] With the development of battery technology and the improvement of performance requirements, test equipment also needs to be further upgraded. When measuring current, response time is very critical, because once the response time is insufficient or too long, it will affect the accuracy of the current measurement results. Improving the response time can more accurately depict the battery current curve.

[0003] The existing circuit current response time is long, the circuit is prone to overshoot, and the output signal produces excessive oscillation or exceeds the target value before reaching a stable state, resulting in poor circuit stability. To this end, we propose a method for improving the circuit current response time to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a method for improving the current response time of a circuit, which can improve the dynamic response capability of the circuit through theoretical analysis, circuit optimization and actual testing, adjust the operational amplifier peripheral circuit, the capacitance of C4, the values ​​of C2, C3 and R3 to improve stability, evaluate circuit performance, fine-tune components and optimize the parameters of the main operational amplifier U2 to improve the current response time, reduce the noise and offset of the feedback loop operational amplifier U4, ensure the normal operation of the system, and use experimental testing and feedback adjustment to enable the circuit to reach the optimal working state, thereby improving the current response time and stability.

[0005] The technical solution adopted by the present invention is as follows:

[0006] A method for improving the current response time of a circuit comprises the following steps:

[0007] Step 1. Theoretically analyze the dynamic response of the system;

[0008] Step 2. Adjust the resistance and capacitance values ​​of the op amp peripheral circuits;

[0009] Step 3. Adjust the capacitance of C4;

[0010] Step 4. Adjust the values ​​of C2, C3 and R3;

[0011] Step 5. Evaluate circuit performance and stability;

[0012] Step 6. Fine-tune component values;

[0013] Step 7. Optimize the parameter settings of the main op amp U2;

[0014] Step 8. Reduce the noise and offset of the feedback loop op amp U4;

[0015] Step 9. Conduct actual testing and feedback adjustments.

[0016] In a preferred embodiment, the dynamic response of the theoretical analysis system is to consult relevant documents and circuit diagrams, understand the functions and effects of each part of the circuit, pay attention to the structure of the signal transmission path and the feedback loop, use classical control theory methods, including transfer function analysis and Bode diagram analysis, estimate the stability and frequency response of the system, combine theoretical calculations and simulation results, evaluate the current response time under the existing configuration, and confirm whether the system needs to be optimized.

[0017] In a preferred embodiment, the adjustment of the resistance and capacitance values ​​of the operational amplifier peripheral circuit is for the peripheral circuits of the main operational amplifier U2 and the feedback loop operational amplifier U4, and the resistance and capacitance values ​​in the circuit are analyzed in detail. When adjusting the resistance, the influence of the change in resistance value on the gain, bandwidth and phase characteristics, and whether it has a negative impact on the stability of the system are considered. When adjusting the capacitance, the influence on the system frequency response, phase shift and waveform distortion, as well as the influence on the circuit stability are considered.

[0018] In a preferred solution, the capacitance of C4 is adjusted. The capacitance of the adjusted capacitor C4 directly affects the time constant of the feedback loop operational amplifier U4, thereby affecting the response speed of the entire system. When adjusting the capacitance of the capacitor C4, its role in the feedback loop is deeply understood to ensure accurate evaluation of its impact on the system response time, and attention is paid to predicting the impact of capacitance changes on frequency characteristics and stability through calculation or simulation to select a suitable capacitance.

[0019] In a preferred solution, the adjustment of the values ​​of C2, C3 and R3 is to adjust the values ​​of capacitors C2, C3 and resistor R3, and their role in the feedback loop and the impact on the system phase shift and frequency characteristics must be considered. When adjusting the values ​​of these components, their impact on phase margin and stability must be considered to ensure system stability. If oscillation problems occur after adjustment, the component values ​​must be gradually reduced or increased in combination with theoretical analysis and practical experience to improve system stability.

[0020] In a preferred embodiment, the circuit performance and stability are evaluated by performing frequency domain and time domain simulation analysis through a circuit simulation tool to evaluate the impact of the adjustments on the circuit, observe changes in the circuit response time, and compare the spectrum diagram and pulse response diagram before and after the adjustment to determine whether the current response time is improved. Through frequency response, step response, pulse response and other analyses, it is confirmed that the amplitude of the circuit is stable and the system stability is not affected.

[0021] In a preferred embodiment, the fine-tuning component values ​​are based on previous simulation results and experimental data to fine-tune the key component values ​​to further fit the actual operating conditions of the circuit. For high-precision electronic systems, fine tuning is performed and the balance of frequency characteristics, stability, noise, etc. is comprehensively considered to improve the current response time of the circuit.

[0022] In a preferred embodiment, the parameters of the optimized main op amp U2 are set to have an in-depth understanding of the technical specifications and characteristic table of the main op amp U2, with special attention paid to parameters such as its gain-bandwidth product and input bias voltage. According to the design requirements and the frequency response range of the system, the gain and bandwidth of U2 are appropriately adjusted to improve the overall performance of the circuit. The appropriate op amp operating mode is selected, and the operating parameters of U2 are optimized in combination with the technical specification manual to reduce the current response time. The op amp operating mode is one or more of a differential mode, a single-ended mode, a pseudo-differential mode, a voltage follower mode, a non-inverting amplifier mode, and an inverting amplifier mode.

[0023] In a preferred embodiment, the noise and offset of the feedback loop op amp U4 are reduced to take into account the key role of the feedback loop op amp U4 in regulation and control, optimize the performance and improve the response time of the circuit, select a low-noise, low-offset feedback loop op amp, reduce the noise and offset effects introduced in the feedback loop, and select external components that match U4. The external components include a stable power supply and appropriate sampling resistors to ensure the normal operation and performance of U4.

[0024] In a preferred embodiment, the actual test and feedback adjustment are to use a test bench to build a specific circuit prototype, and use appropriate test equipment and measuring instruments to perform real-time response time measurements, by changing the circuit input signal to generate different load conditions and working conditions, observing the dynamic changes in the system response time, and based on the actual test results, fine-tuning the key components in the circuit and adjusting the feedback control parameters to optimize the current response time and continuously improve the circuit performance.

[0025] The technical effects achieved by the present invention are:

[0026] Through theoretical analysis, circuit optimization and actual testing, the dynamic response capability of the circuit can be effectively improved, making the system respond more quickly to changes in input signals;

[0027] By adjusting the resistance and capacitance values ​​of the operational amplifier's peripheral circuits, the capacitance of C4, and the values ​​of C2, C3, and R3, the stability of the circuit can be improved and the oscillation problem that occurs during the system's response process can be reduced.

[0028] By evaluating the circuit performance and stability, fine-tuning the component values ​​and optimizing the parameter settings of the main op amp U2, the circuit performance can be significantly improved, and the current response time and output stability can be increased;

[0029] By reducing the noise and offset of the feedback loop amplifier U4, the negative impact on circuit performance can be reduced, ensuring the normal operation and stable performance of the system;

[0030] Through experimental testing and feedback adjustment, problems can be discovered and adjustments can be made in a timely manner, so that the circuit can reach the optimal working state and ensure the reliability and stability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a schematic diagram of a loop control circuit of a method for improving circuit current response time of the present invention;

[0032] Figure 2 is a schematic diagram of a method for improving circuit current response time of the present invention;

[0033] Figure 3 is a schematic diagram of a simplified system block diagram of a method for improving circuit current response time of the present invention;

[0034] Figure 4 It is a circuit output simulation diagram of a method for improving circuit current response time according to the present invention. DETAILED DESCRIPTION

[0035] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0036] Embodiment 1

[0037] See also Figure 1-4 As shown, the present invention provides a method for improving the current response time of a circuit, comprising the following steps:

[0038] Step 1. Theoretically analyze the dynamic response of the system;

[0039] Step 2. Adjust the resistance and capacitance values ​​of the op amp peripheral circuits;

[0040] Step 3. Adjust the capacitance of C4;

[0041] Step 4. Adjust the values ​​of C2, C3 and R3;

[0042] Step 5. Evaluate circuit performance and stability;

[0043] Step 6. Fine-tune component values;

[0044] Step 7. Optimize the parameter settings of the main op amp U2;

[0045] Step 8. Reduce the noise and offset of the feedback loop op amp U4;

[0046] Step 9. Conduct actual testing and feedback adjustments;

[0047] Theoretical analysis of the dynamic response of the system involves consulting relevant documents and circuit diagrams, understanding the functions and effects of each part of the circuit, paying attention to the structure of the signal transmission path and the feedback loop, using classical control theory methods, including transfer function analysis and Bode plot analysis, to estimate the stability and frequency response of the system, combining theoretical calculations and simulation results, evaluating the current response time under the existing configuration, and confirming whether the system needs to be optimized;

[0048] Adjusting the resistance and capacitance values ​​of the operational amplifier peripheral circuits is for the peripheral circuits of the main operational amplifier U2 and the feedback loop operational amplifier U4. The resistance and capacitance values ​​in the circuits are analyzed in detail. When adjusting the resistance, consider the impact of the change in resistance value on the gain, bandwidth and phase characteristics, and whether it has a negative impact on the stability of the system. When adjusting the capacitance, consider its impact on the system frequency response, phase shift and waveform distortion, as well as the impact on the circuit stability.

[0049] Adjusting the capacitance of C4 directly affects the time constant of the feedback loop op amp U4, which in turn affects the response speed of the entire system. When adjusting the capacitance of C4, you should have a deep understanding of its role in the feedback loop, ensure an accurate assessment of its impact on the system response time, and pay attention to predicting the impact of capacitance changes on frequency characteristics and stability through calculation or simulation to select the appropriate capacitance;

[0050] Adjust the values ​​of C2, C3 and R3. When adjusting the values ​​of capacitors C2, C3 and resistor R3, their roles in the feedback loop and their impact on the system phase shift and frequency characteristics must be considered. When adjusting the values ​​of these components, their impact on phase margin and stability must be considered to ensure system stability. If oscillation occurs after adjustment, combine theoretical analysis and practical experience to gradually reduce or increase component values ​​to improve system stability.

[0051] Evaluate circuit performance and stability by performing frequency and time domain simulation analysis using circuit simulation tools to evaluate the impact of the adjustments on the circuit, observe changes in the circuit response time, and compare the spectrum and pulse response diagrams before and after the adjustments to determine whether the current response time has been improved. Confirm that the circuit amplitude is stable and the system stability is not affected by frequency response, step response, pulse response, etc. analysis;

[0052] Fine-tuning component values ​​means fine-tuning the key component values ​​based on the previous simulation results and experimental data to further fit the actual operation of the circuit. For high-precision electronic systems, fine-tuning is performed, and the balance of frequency characteristics, stability, noise, etc. is comprehensively considered to improve the current response time of the circuit.

[0053] Optimize the parameter settings of the main op amp U2. Understand the technical specifications and characteristic table of the main op amp U2 in depth, pay special attention to its gain-bandwidth product and input bias voltage and other parameters. According to the design requirements and the frequency response range of the system, appropriately adjust the gain and bandwidth of U2 and other parameters to improve the overall performance of the circuit. Select the appropriate op amp working mode. Combined with the technical specification manual, optimize the working parameters of U2 to reduce the current response time. The op amp working modes are differential mode, single-ended mode, voltage follower mode, non-inverting amplifier mode, and inverting amplifier mode.

[0054] Reduce the noise and offset of the feedback loop amplifier U4. Considering the key role of the feedback loop amplifier U4 in regulation and control, optimize the performance and improve the response time of the circuit. Select a low-noise, low-offset feedback loop amplifier to reduce the noise and offset effects introduced in the feedback loop. Select external components that match U4. The external components include a stable power supply and appropriate sampling resistors to ensure the normal operation and performance of U4.

[0055] Actual testing and feedback adjustments are carried out by using a test bench to build a specific circuit prototype, and using appropriate test equipment and measuring instruments to perform real-time response time measurements. By changing the circuit input signal to produce different load conditions and working conditions, the dynamic changes in the system response time are observed. According to the actual test results, the key components in the circuit are fine-tuned and the feedback control parameters are adjusted to optimize the current response time and continuously improve the circuit performance.

[0056] Embodiment 2

[0057] The present invention provides a method for improving the current response time of a circuit, comprising the following steps:

[0058] Step 1. Theoretically analyze the dynamic response of the system;

[0059] Step 2. Adjust the resistance and capacitance values ​​of the op amp peripheral circuits;

[0060] Step 3. Adjust the capacitance of C4;

[0061] Step 4. Adjust the values ​​of C2, C3 and R3;

[0062] Step 5. Evaluate circuit performance and stability;

[0063] Step 6. Fine-tune component values;

[0064] Step 7. Optimize the parameter settings of the main op amp U2;

[0065] Step 8. Reduce the noise and offset of the feedback loop op amp U4;

[0066] Step 9. Conduct actual testing and feedback adjustments;

[0067] Theoretical analysis of the dynamic response of the system involves consulting relevant documents and circuit diagrams, understanding the functions and effects of each part of the circuit, paying attention to the structure of the signal transmission path and the feedback loop, using classical control theory methods, including transfer function analysis and Bode plot analysis, to estimate the stability and frequency response of the system, combining theoretical calculations and simulation results, evaluating the current response time under the existing configuration, and confirming whether the system needs to be optimized;

[0068] Adjusting the resistance and capacitance values ​​of the operational amplifier peripheral circuits is for the peripheral circuits of the main operational amplifier U2 and the feedback loop operational amplifier U4. The resistance and capacitance values ​​in the circuits are analyzed in detail. When adjusting the resistance, consider the impact of the change in resistance value on the gain, bandwidth and phase characteristics, and whether it has a negative impact on the stability of the system. When adjusting the capacitance, consider its impact on the system frequency response, phase shift and waveform distortion, as well as the impact on the circuit stability.

[0069] Adjusting the capacitance of C4 directly affects the time constant of the feedback loop op amp U4, which in turn affects the response speed of the entire system. When adjusting the capacitance of C4, you should have a deep understanding of its role in the feedback loop, ensure an accurate assessment of its impact on the system response time, and pay attention to predicting the impact of capacitance changes on frequency characteristics and stability through calculation or simulation to select the appropriate capacitance;

[0070] Adjust the values ​​of C2, C3 and R3. When adjusting the values ​​of capacitors C2, C3 and resistor R3, their roles in the feedback loop and their impact on the system phase shift and frequency characteristics must be considered. When adjusting the values ​​of these components, their impact on phase margin and stability must be considered to ensure system stability. If oscillation occurs after adjustment, combine theoretical analysis and practical experience to gradually reduce or increase component values ​​to improve system stability.

[0071] Evaluate circuit performance and stability by performing frequency and time domain simulation analysis using circuit simulation tools to evaluate the impact of the adjustments on the circuit, observe changes in the circuit response time, and compare the spectrum and pulse response diagrams before and after the adjustments to determine whether the current response time has been improved. Confirm that the circuit amplitude is stable and the system stability is not affected by frequency response, step response, pulse response, etc. analysis;

[0072] Fine-tuning component values ​​means fine-tuning the key component values ​​based on the previous simulation results and experimental data to further fit the actual operation of the circuit. For high-precision electronic systems, fine-tuning is performed, and the balance of frequency characteristics, stability, noise, etc. is comprehensively considered to improve the current response time of the circuit.

[0073] Optimize the parameter settings of the main op amp U2. Understand the technical specifications and characteristic table of the main op amp U2 in depth, pay special attention to its gain-bandwidth product and input bias voltage and other parameters. According to the design requirements and the frequency response range of the system, appropriately adjust the gain and bandwidth of U2 and other parameters to improve the overall performance of the circuit. Select the appropriate op amp working mode. Combined with the technical specification manual, optimize the working parameters of U2 to reduce the current response time. The op amp working modes are differential mode, single-ended mode, pseudo-differential mode, voltage follower mode, and non-inverting amplifier mode;

[0074] Reduce the noise and offset of the feedback loop amplifier U4. Considering the key role of the feedback loop amplifier U4 in regulation and control, optimize the performance and improve the response time of the circuit. Select a low-noise, low-offset feedback loop amplifier to reduce the noise and offset effects introduced in the feedback loop. Select external components that match U4. The external components include a stable power supply and appropriate sampling resistors to ensure the normal operation and performance of U4.

[0075] Actual testing and feedback adjustments are carried out by using a test bench to build a specific circuit prototype, and using appropriate test equipment and measuring instruments to perform real-time response time measurements. By changing the circuit input signal to produce different load conditions and working conditions, the dynamic changes in the system response time are observed. According to the actual test results, the key components in the circuit are fine-tuned and the feedback control parameters are adjusted to optimize the current response time and continuously improve the circuit performance.

[0076] Embodiment 3

[0077] Design circuit as Figure 1As shown, the input of the loop is the control signal from the previous digital-to-analog conversion circuit, which is replaced by an adjustable DC power supply V1 in the simulation diagram. The control signal is connected to the positive input pin of the main op amp U2, i.e., pin 3, after being divided by the voltage-dividing resistors R5 and R12. The feedback adjustment signal is connected to the negative input pin of the main op amp U2, i.e., pin 2, after being divided by the output pin of the feedback loop op amp U4, i.e., pin 6, after being divided by R15 and R16. C3 and R3 are connected in series with C2, and the two ends of the parallel connection are respectively connected to the output terminal and the negative input terminal of the main op amp U2. The positive input pin of the feedback loop op amp U4 is connected in series with resistor R9 and then connected to the positive terminal of the output sampling resistor R14. The negative input pin of U4 is connected in series with resistor R6 and then connected to the negative terminal of the output sampling resistor R14. A capacitor C4 is connected in series between pins 7 and 8 of U4. The output of the main op amp is connected to the cathode of the limiting diode D2, and the anode is connected to a 15V power supply after being connected in series with a resistor. At the same time, the anode of the diode is connected to the input of the PWM generator U3 to transmit the adjusted control signal to the PWM generator. The PWM waveform output by U3 drives the MOS tube Q1, and Q1, inductor L1 and capacitor C1 form a buck circuit. Then the two ends of C1 are connected to the load R2 as the output.

[0078] The circuit controls the output current to be converted into a voltage value through a high-precision, low-temperature drift sampling resistor, and then drives the MOS tube after feedback adjustment and amplification, and finally achieves a stable output. In order to improve the current accuracy, the main loop op amp U2 uses a high-precision operational amplifier OPA4277, which has the advantages of low noise, ultra-low temperature drift, and ultra-low bias voltage. From the analysis of the circuit diagram, it can be seen that the main power of the circuit is VDD, R1, MOS tube, L1 and C1. The U4 and U2 op amp parts are the feedback adjustment control loop. The simplified system block diagram of the circuit is as follows: Figure 3 As shown, if you want to improve the response time of the circuit, you need to theoretically analyze the dynamic response of the system. Combined with practical experience, you can adjust the resistance and capacitance values ​​of the circuits around the op amps U2 and U4. When adjusting C4, the larger the capacitance, the longer the response time, and the smaller the capacitance, the smaller the response time. At the same time, there will be oscillations. Continue to adjust C2, C3, and R3, reduce the capacitance to reduce the oscillation, and finally adjust to the state in the circuit diagram. At this time, the output waveform simulation is as follows Figure 4 shown.

[0079] In the present invention, through theoretical analysis, circuit optimization and actual testing, the dynamic response capability of the circuit can be effectively improved, so that the system can respond to input signal changes more quickly. By adjusting the resistance and capacitance values ​​of the operational amplifier peripheral circuit, the capacitance value of C4, the values ​​of C2, C3 and R3, etc., the stability of the circuit can be improved, and the oscillation problem that occurs in the system during the response process can be reduced. By evaluating the circuit performance and stability, fine-tuning the component values ​​and optimizing the parameter settings of the main operational amplifier U2, the performance of the circuit can be significantly improved, and the current response time and output stability can be improved. By reducing the noise and offset of the feedback loop operational amplifier U4, the negative impact on the circuit performance can be reduced, ensuring the normal operation and stable performance of the system. Through experimental testing and feedback adjustment, problems can be discovered in time and adjustments can be made, so that the circuit reaches the best working state, ensuring the reliability and stability of the system, and then improving the circuit current response time.

[0080] The above is only a preferred embodiment of the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principles of the present invention, and these improvements and modifications should also be considered as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the art unless otherwise specified and limited.

Claims

1. A method for improving circuit current response time, characterized in that: The following steps are involved: Step 1. Theoretically analyze the dynamic response of the system; Step 2. Adjust the resistance and capacitance values ​​of the op amp peripheral circuits; Step 3. Adjust the capacitance of C4; Step 4. Adjust the values ​​of C2, C3 and R3; Step 5. Evaluate circuit performance and stability; Step 6. Fine-tune component values; Step 7. Optimize the parameter settings of the main op amp U2; Step 8. Reduce the noise and offset of the feedback loop op amp U4; Step 9. Conduct actual testing and feedback adjustments.

2. A method for improving circuit current response time according to claim 1, characterized in that: The dynamic response of the theoretical analysis system is to consult relevant documents and circuit diagrams, understand the functions and effects of each part of the circuit, pay attention to the structure of the signal transmission path and the feedback loop, use classical control theory methods, including transfer function analysis and Bode diagram analysis, estimate the stability and frequency response of the system, combine theoretical calculations and simulation results, evaluate the current response time under the existing configuration, and confirm whether the system needs to be optimized.

3. A method for improving circuit current response time according to claim 1, characterized in that: The adjustment of the resistance and capacitance values ​​of the operational amplifier peripheral circuit is for the peripheral circuits of the main operational amplifier U2 and the feedback loop operational amplifier U4, and the resistance and capacitance values ​​in the circuit are analyzed in detail. When adjusting the resistance, the influence of the change in resistance value on the gain, bandwidth and phase characteristics, and whether it has a negative impact on the stability of the system are considered. When adjusting the capacitance, the influence on the system frequency response, phase shift and waveform distortion, as well as the influence on the circuit stability are considered.

4. A method for improving circuit current response time according to claim 1, characterized in that: The adjustment of the capacitance of C4 is to adjust the capacitance of capacitor C4. The capacitance of capacitor C4 directly affects the time constant of feedback loop operational amplifier U4, and further affects the response speed of the entire system. When adjusting the capacitance of capacitor C4, its role in the feedback loop is deeply understood to ensure accurate evaluation of its impact on system response time. Attention is paid to predicting the impact of capacitance changes on frequency characteristics and stability through calculation or simulation to select a suitable capacitance.

5. A method for improving circuit current response time according to claim 1, characterized in that: The adjustment of the values ​​of C2, C3 and R3 is to adjust the values ​​of capacitors C2, C3 and resistor R3, and their role in the feedback loop and the influence on the phase shift and frequency characteristics of the system need to be considered. When adjusting the values ​​of these components, their influence on the phase margin and stability is considered to ensure the stability of the system. If oscillation problems occur after adjustment, combine theoretical analysis and practical experience to gradually reduce or increase the component values ​​to improve the stability of the system.

6. A method for improving circuit current response time according to claim 1, characterized in that: The evaluation of circuit performance and stability is to perform frequency domain and time domain simulation analysis through circuit simulation tools to evaluate the impact of the adjustments on the circuit, observe the change in the response time of the circuit, and compare the spectrum diagram and pulse response diagram before and after the adjustment to determine whether the current response time is improved. Through analysis of frequency response, step response, pulse response, etc., it is confirmed that the amplitude of the circuit is stable and the system stability is not affected.

7. A method for improving circuit current response time according to claim 1, characterized in that: The fine-tuning component values ​​are based on previous simulation results and experimental data to fine-tune the key component values ​​to further fit the actual operating conditions of the circuit. For high-precision electronic systems, fine tuning is performed and the balance of frequency characteristics, stability, noise, etc. is comprehensively considered to improve the current response time of the circuit.

8. The method for improving circuit current response time according to claim 1, characterized in that: The parameter settings of the optimized main operational amplifier U2 are to have an in-depth understanding of the technical specifications and characteristic table of the main operational amplifier U2, pay special attention to its parameters such as gain-bandwidth product and input bias voltage, and appropriately adjust the gain and bandwidth of U2 and other parameters according to the design requirements and the frequency response range of the system to improve the overall performance of the circuit, select the appropriate operational amplifier working mode, and optimize the working parameters of U2 in combination with the technical specification manual to reduce the current response time. The operational amplifier working mode is one or more of a differential mode, a single-ended mode, a pseudo-differential mode, a voltage follower mode, a non-inverting amplifier mode, and an inverting amplifier mode.

9. A method for improving circuit current response time according to claim 1, characterized in that: The noise and offset of the feedback loop operational amplifier U4 are reduced in consideration of the key role of the feedback loop operational amplifier U4 in regulation and control, the performance is optimized to improve the response time of the circuit, a low-noise, low-offset feedback loop operational amplifier is selected, the noise and offset effects introduced into the feedback loop are reduced, and external components matching U4 are selected. The external components include a stable power supply and appropriate sampling resistors to ensure the normal operation and performance of U4.

10. The method for improving circuit current response time according to claim 1, characterized in that: The actual test and feedback adjustment described herein is to use a test bench to build a specific circuit prototype, and use appropriate test equipment and measuring instruments to perform real-time response time measurements, by changing the circuit input signal to generate different load conditions and working conditions, observing the dynamic changes in the system response time, and based on the actual test results, fine-tuning the key components in the circuit and adjusting the feedback control parameters to optimize the current response time and continuously improve the circuit performance.

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