Laser power supply control method and system based on automatic adjustment

Abstract

The present invention discloses a laser power control method and system based on automatic adjustment, which relates to the technical field of laser power adjustment. The system collects laser power performance data in real time by integrating a sensor group and an acquisition device, and calculates and obtains the voltage instantaneous change coefficient Vt, the current harmonic component coefficient Fl, the power supply high-frequency noise coefficient Nf and the filter capacitor self-induction voltage coefficient Vc after data preprocessing; based on the above parameters, the laser output stability coefficient JSW is calculated and obtained, the stability of the laser output is evaluated, and a control instruction is generated. According to the obtained filter capacitor self-induction voltage coefficient Vc and the laser output stability coefficient JSW, the power supply filter automatic adjustment coefficient DLZ is calculated, and a secondary evaluation mechanism is started to ensure the stability and filtering effect of the laser power supply. The system can realize real-time monitoring and automatic adjustment of the laser power supply performance, and improve the stability of the laser output and the efficiency of the power supply filtering.

Description

Technical Field

[0001] The invention relates to the technical field of laser power supply regulation, and in particular to a laser power supply control method and system based on automatic regulation. Background Art

[0002] In the field of laser processing, the stability of the laser power supply is crucial to ensure the processing quality. However, due to the voltage fluctuations, current harmonics and high-frequency noise that may exist in the power supply system, the stability of the laser output is often adversely affected, resulting in an unstable laser beam during the processing process, which in turn affects the accuracy and consistency of laser processing operations such as welding and cutting. Therefore, how to effectively adjust and optimize the filtering performance of the laser power supply has become an important research direction for improving the stability of laser output.

[0003] The existing laser power control system usually relies on fixed filter parameter settings when dealing with power fluctuations and poor filtering effects, and lacks the ability to adjust in real time. This static adjustment method is not easy to deal with complex and changeable power supply conditions, resulting in a decrease in laser output stability, which in turn affects the quality and efficiency of the entire laser processing process. In addition, when facing power supply noise of different frequencies and high amplitudes, the traditional filter has limited filtering effect, and is prone to insufficient or excessive filtering problems. It is not easy to effectively suppress the high-frequency noise of the power supply, resulting in fluctuations in laser output. The existing filter parameters cannot be dynamically adjusted according to the real-time power supply status, resulting in the stability of the existing laser power control system being difficult to guarantee when facing complex power supply fluctuations. This deficiency not only affects the accuracy of laser output, but may also lead to abnormal conditions during the processing process, such as laser focus offset, uneven cutting lines, and material burns. These abnormal effects not only affect the processing quality of the product, but may also cause damage to the equipment, increasing equipment maintenance and operating costs. Therefore, the existing system has obvious deficiencies when dealing with complex power supply conditions, and a more intelligent adjustment mechanism is needed to solve these problems and ensure the stability of the laser power supply and the reliability of the processing process. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a laser power supply control method and system based on automatic adjustment, which solves the problems in the above-mentioned background technology.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a laser power control method and system based on automatic adjustment, including a laser power data acquisition module, a laser power data analysis module, a laser output analysis module and a filter adjustment module;

[0006] The laser power supply data acquisition module is used for an integrated sensor group and acquisition equipment installed on the laser power supply device to collect laser power supply performance data in real time, and pre-process the collected laser power supply performance data to obtain a power quality data set and a filter capacitor self-induction voltage data set;

[0007] The laser power supply data analysis module is used to summarize and calculate the acquired power quality data set to obtain the voltage instantaneous change coefficient Vt, the current harmonic component coefficient Fl and the power supply high-frequency noise coefficient Nf;

[0008] The laser output analysis module is used to summarize and calculate the obtained voltage instantaneous change coefficient Vt, current harmonic component coefficient Fl and power supply high-frequency noise coefficient Nf, obtain the laser output stability coefficient JSW, and compare and evaluate it with the preset first laser output stability threshold M and the preset second laser output stability threshold N, and trigger the secondary evaluation mechanism according to the evaluation results;

[0009] The filter adjustment module is used to summarize and calculate the obtained filter capacitor self-induction voltage data set, obtain the filter capacitor self-induction voltage coefficient Vc, and summarize and calculate the obtained voltage instantaneous change coefficient Vt, current harmonic component coefficient Fl, power supply high-frequency noise coefficient Nf and laser output stability coefficient JSW, obtain the power supply filter automatic adjustment coefficient DLZ, and start the second evaluation mechanism, the second evaluation mechanism is used to preset the power supply filter threshold Z and the power supply filter automatic adjustment coefficient DLZ for secondary comparison and evaluation, and generate control information according to the evaluation results.

[0010] Preferably, the laser power data acquisition module includes a laser power data acquisition unit and a data preprocessing unit;

[0011] The laser power supply data acquisition unit is used to install corresponding acquisition equipment and integrated sensor group on the laser power supply equipment to collect laser power supply performance data in real time;

[0012] The acquisition equipment includes a digital oscilloscope, a harmonic analyzer, a spectrum analyzer and an LCR meter;

[0013] The integrated sensor group includes a Hall effect current sensor;

[0014] The data preprocessing unit is used to perform denoising, outlier detection, data smoothing and dimensionless processing on the collected laser power supply performance data to obtain a power quality data set and a filter capacitor self-induction voltage data set;

[0015] The power quality data set includes a voltage variation data set, a current harmonic data set and a power supply high-frequency noise data set;

[0016] The voltage variation data set includes a voltage fluctuation amplitude bf and a step change dv of a voltage derivative;

[0017] The current harmonic data group includes fundamental current jl, harmonic amplitude xf and harmonic frequency xp;

[0018] The power supply high-frequency noise data group includes high-frequency noise voltage nf, noise bandwidth and noise power density pn;

[0019] The filter capacitor self-induction voltage data set includes a filter capacitor self-induction voltage data group;

[0020] The filter capacitor self-inductance voltage data group includes the filter capacitor self-inductance value lc, the current I and the filter capacitor internal resistance rc.

[0021] Preferably, the laser power supply data analysis module includes a voltage instantaneous change calculation unit, a current harmonic component calculation unit and a power supply high-frequency noise calculation unit;

[0022] The voltage instantaneous change calculation unit is used to summarize and calculate the voltage instantaneous change coefficient Vt according to the acquired voltage change data group;

[0023] The voltage instantaneous change coefficient Vt is obtained by the following formula:

[0024] In the formula, Indicates the voltage fluctuation time interval;

[0025] The current harmonic component calculation unit is used to summarize and calculate the current harmonic component coefficient Fl according to the acquired current harmonic data group;

[0026] The current harmonic component coefficient F1 is obtained by the following formula:

[0027] In the formula, represents the nth current harmonic component, represents the nth harmonic frequency, represents the nth harmonic amplitude, t represents the time variable, sin represents the sine function, represents the sinusoidal oscillation characteristics of harmonics over time, Represents pi.

[0028] Preferably, the power supply high-frequency noise calculation unit is used to summarize and calculate the power supply high-frequency noise coefficient Nf according to the acquired power supply high-frequency noise data group;

[0029] The power supply high frequency noise coefficient Nf is obtained by the following formula:

[0030] In the formula, ∫ represents the integral function, f1 represents the lower limit of integration, f2 represents the upper limit of integration, and d represents the differential symbol in calculus.

[0031] Preferably, the laser output analysis module includes a laser output calculation unit and a laser output stability evaluation unit;

[0032] The laser output calculation unit is used to summarize and calculate the laser output stability coefficient JSW according to the obtained voltage instantaneous change coefficient Vt, current harmonic component coefficient Fl and power supply high-frequency noise coefficient Nf;

[0033] The laser output stability coefficient JSW is obtained by the following formula:

[0034] In the formula, is the control coefficient, represents the sum of the current harmonic components Fl, represents an exponential function with a natural constant as the base, and ∑ represents a summation function.

[0035] Preferably, the laser output stability evaluation unit presets a first laser output stability threshold M and a second laser output stability threshold N based on the average value of historical laser output stability data, and performs preliminary comparative evaluation with the obtained laser output stability coefficient JSW to analyze the fluctuation of the laser output. The specific evaluation scheme is as follows:

[0036] When the laser output stability coefficient JSW> the preset first laser output stability threshold M, it means that the laser output is stable and no adjustment is required;

[0037] When the preset first laser output stability threshold M≥ the laser output stability coefficient JSW≥ the preset second laser output stability threshold N, it indicates that the laser output fluctuates. At this time, a first control instruction is generated, and the control instruction is transmitted to the filter adjustment module for adjustment, and the second evaluation mechanism is triggered;

[0038] When the laser output stability coefficient JSW is less than the preset second laser output stability threshold N, it means that the laser output stability is lower than the lowest adjustable value. At this time, the equipment needs to be stopped immediately for inspection.

[0039] Preferably, the filtering and regulating module comprises a filtering capacitor self-induction voltage calculating unit and a power supply filtering and regulating unit;

[0040] The filter capacitor self-induction voltage calculation unit is used to summarize and calculate the obtained filter capacitor self-induction voltage data group to obtain the filter capacitor self-induction voltage coefficient Vc;

[0041] The filter capacitor self-induction voltage coefficient Vc is obtained by the following formula: In the formula, represents the change of current I with time t, Represents the time interval between two time points. It means the current from time t to The increment of time, lim represents the limit operation function.

[0042] Preferably, the power supply filter adjustment unit includes a power supply filter automatic adjustment calculation unit and a power supply filter evaluation unit;

[0043] The power filter automatic adjustment calculation unit is triggered when the first control instruction is obtained, and further constructs an optimization objective function formula, summarizes and calculates the obtained voltage instantaneous change coefficient Vt, current harmonic component coefficient Fl, power supply high-frequency noise coefficient Nf, filter capacitor self-inductance voltage coefficient Vc and laser output stability coefficient JSW to obtain the power filter automatic adjustment coefficient DLZ;

[0044] The power supply filter automatic adjustment coefficient DLZ is obtained by the following formula:

[0045] In the formula, ∑ represents the summation function, It represents the combined influence of voltage instantaneous variation coefficient Vt, current harmonic component coefficient Fl and power supply high-frequency noise coefficient Nf.

[0046] Preferably, when the power filter evaluation unit indicates that there is fluctuation through preliminary calculation of the laser output stability, a second evaluation mechanism is started, and the second evaluation mechanism performs a secondary comparative evaluation by presetting the power filter threshold Z and the obtained power filter automatic adjustment coefficient DLZ, and generates corresponding optimization information according to the relevant evaluation results. The specific evaluation scheme is as follows;

[0047] When the power filter automatic adjustment coefficient DLZ ≤ the preset power filter threshold Z, it means that the current filtering effect is qualified and no further operation is required;

[0048] When the power filter automatic adjustment coefficient DLZ is greater than the preset power filter threshold Z, it means that the current filtering effect is unqualified. At this time, the filter equipment of the laser power supply is further adjusted, and the adjusted output is sent to the laser power supply data analysis module for iterative calculation and evaluation until it is qualified.

[0049] A laser power supply control method based on automatic adjustment comprises the following steps:

[0050] Step 1: An integrated sensor group and acquisition equipment installed on the laser power supply equipment collects the laser power supply performance data in real time, and pre-processes the collected laser power supply performance data to obtain a power quality data set and a filter capacitor self-induction voltage data set;

[0051] Step 2: Summarize and calculate the acquired power quality data set to obtain the voltage instantaneous change coefficient Vt, the current harmonic component coefficient Fl and the power supply high-frequency noise coefficient Nf;

[0052] Step 3: Summarize and calculate the voltage instantaneous change coefficient Vt, current harmonic component coefficient Fl and power supply high-frequency noise coefficient Nf to obtain the laser output stability coefficient JSW, and make a preliminary comparative evaluation with the preset first laser output stability threshold M and the preset second laser output stability threshold N, and trigger the secondary evaluation mechanism according to the evaluation results;

[0053] Step 4: Summarize and calculate the obtained filter capacitor self-induction voltage data group, obtain the filter capacitor self-induction voltage coefficient Vc, and summarize and calculate the obtained voltage instantaneous change coefficient Vt, current harmonic component coefficient Fl, power supply high-frequency noise coefficient Nf and laser output stability coefficient JSW to obtain the power supply filter automatic adjustment coefficient DLZ, and start the second evaluation mechanism, which is used to preset the power supply filter threshold Z and the power supply filter automatic adjustment coefficient DLZ for secondary comparative evaluation, and generate control information according to the evaluation results.

[0054] The present invention provides a laser power supply control method and system based on automatic adjustment, which has the following beneficial effects:

[0055] (1) The laser power data acquisition module of the system monitors the voltage, harmonics, power noise and self-induction voltage of the filter capacitor in real time by integrating a sensor group and a variety of acquisition devices, and pre-processes these data to ensure the accuracy and real-time nature of the data. Through the pre-processing and summary analysis of these data, the system can quickly respond to changes in the power supply status, providing a reliable data basis for subsequent analysis and regulation.

[0056] (2) The laser power data analysis module and laser output analysis module of the system obtain the voltage instantaneous change coefficient Vt, current harmonic component coefficient Fl, power supply high-frequency noise coefficient Nf and laser output stability coefficient JSW by performing in-depth calculation and evaluation on the collected data. These key coefficients can accurately reflect the stability of the laser power supply and laser output, and perform preliminary comparative evaluation by presetting the first laser output stability threshold M and the second laser output stability threshold N. When the laser output fluctuates, the system can automatically generate control instructions, further triggering the filter adjustment module for secondary evaluation and control. This multi-level evaluation mechanism ensures the stability of the laser output and avoids production problems caused by unstable power supply.

[0057] (3) After detecting the laser output fluctuation, the filter adjustment module of the system dynamically adjusts and optimizes the power supply filtering effect by calculating the filter capacitor self-induction voltage coefficient Vc and the power supply filter automatic adjustment coefficient DLZ. Through the secondary evaluation mechanism, the system can further optimize the filtering effect after the initial adjustment to ensure the efficient and stable operation of the power supply. This system not only improves the performance and stability of the laser power supply, but also realizes the automated control process, reduces the need for manual intervention, and provides a guarantee for the efficient operation of laser equipment in industrial production. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] Figure 1 This is a schematic diagram of a laser power supply control system based on automatic adjustment according to the present invention;

[0059] Figure 2 The present invention is a schematic diagram of the steps of a laser power supply control method based on automatic adjustment. DETAILED DESCRIPTION

[0060] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0061] Example 1

[0062] See also Figure 1 The present invention provides a laser power control system based on automatic adjustment. To achieve the above purpose, the present invention is implemented through the following technical scheme: including a laser power data acquisition module, a laser power data analysis module, a laser output analysis module and a filter adjustment module;

[0063] The laser power supply data acquisition module is used for an integrated sensor group and acquisition equipment installed on the laser power supply device to collect laser power supply performance data in real time, and pre-process the collected laser power supply performance data to obtain a power quality data set and a filter capacitor self-induction voltage data set;

[0064] The laser power supply data analysis module is used to summarize and calculate the acquired power quality data set to obtain the voltage instantaneous change coefficient Vt, the current harmonic component coefficient Fl and the power supply high-frequency noise coefficient Nf;

[0065] The laser output analysis module is used to summarize and calculate the obtained voltage instantaneous change coefficient Vt, current harmonic component coefficient Fl and power supply high-frequency noise coefficient Nf, obtain the laser output stability coefficient JSW, and compare and evaluate it with the preset first laser output stability threshold M and the preset second laser output stability threshold N, and trigger the secondary evaluation mechanism according to the evaluation results;

[0066] The filter adjustment module is used to summarize and calculate the obtained filter capacitor self-induction voltage data set, obtain the filter capacitor self-induction voltage coefficient Vc, and summarize and calculate the obtained voltage instantaneous change coefficient Vt, current harmonic component coefficient Fl, power supply high-frequency noise coefficient Nf and laser output stability coefficient JSW, obtain the power supply filter automatic adjustment coefficient DLZ, and start the second evaluation mechanism, the second evaluation mechanism is used to preset the power supply filter threshold Z and the power supply filter automatic adjustment coefficient DLZ for secondary comparison and evaluation, and generate control information according to the evaluation results.

[0067] In this embodiment, through the collaborative work of the laser power data acquisition module, the laser power data analysis module, the laser output analysis module and the filter adjustment module, the comprehensive monitoring and intelligent adjustment of the laser power performance are realized. First, through the laser power data acquisition module, the system collects and pre-processes the voltage change data group, the current harmonic data group, the power supply high-frequency noise data group and the filter capacitor self-induction voltage data group in real time, which provides reliable basic data for subsequent analysis and evaluation. Through the application of the integrated sensor group, the system can accurately capture the dynamic changes of the power performance and ensure the real-time and accuracy of the data. The laser power data analysis module summarizes and calculates the acquired data, extracts the voltage instantaneous change coefficient Vt, the current harmonic component coefficient Fl, the power supply high-frequency noise coefficient Nf and the filter capacitor self-induction voltage coefficient Vc reflecting the power performance, and these coefficients are further used in the laser output analysis module, and the laser output stability coefficient JSW is compared with the preset first laser output stability threshold M and the preset second laser output stability threshold N to realize the preliminary evaluation of the laser output stability. When the evaluation result is not ideal, the system automatically triggers the secondary evaluation mechanism to ensure that the output laser can maintain high stability under various environmental conditions. Through the filter adjustment module, the system comprehensively calculates the filter capacitor self-induction voltage coefficient Vc and the obtained voltage instantaneous change coefficient Vt, current harmonic component coefficient Fl, power supply high-frequency noise coefficient Nf and laser output stability coefficient JSW to obtain the power filter automatic adjustment coefficient DLZ, and compares it with the preset power filter threshold Z to complete the secondary evaluation. Based on the control information generated by the evaluation results, the working state of the power filter can be adjusted in real time to optimize the quality of laser output.

[0068] Example 2

[0069] This embodiment is explained in Example 1, please refer to Figure 1 , specifically: the laser power supply data acquisition module includes a laser power supply data acquisition unit and a data preprocessing unit;

[0070] The laser power supply data acquisition unit is used to install corresponding acquisition equipment and integrated sensor group on the laser power supply equipment to collect laser power supply performance data in real time;

[0071] The acquisition equipment includes a digital oscilloscope, a harmonic analyzer, a spectrum analyzer and an LCR meter;

[0072] The integrated sensor group includes a Hall effect current sensor;

[0073] The data preprocessing unit is used to perform denoising, outlier detection, data smoothing and dimensionless processing on the collected laser power supply performance data to obtain a power quality data set and a filter capacitor self-induction voltage data set;

[0074] The power quality data set includes a voltage variation data set, a current harmonic data set and a power supply high-frequency noise data set;

[0075] The voltage variation data set includes a voltage fluctuation amplitude bf and a step change dv of a voltage derivative;

[0076] The current harmonic data group includes fundamental current jl, harmonic amplitude xf and harmonic frequency xp;

[0077] The power supply high-frequency noise data group includes high-frequency noise voltage nf, noise bandwidth and noise power density pn;

[0078] The filter capacitor self-induction voltage data set includes a filter capacitor self-induction voltage data group;

[0079] The filter capacitor self-inductance voltage data group includes the filter capacitor self-inductance value lc, the current I and the filter capacitor internal resistance rc.

[0080] In this embodiment, through the construction of the laser power data acquisition module, the system realizes high-precision, multi-dimensional power performance data acquisition and preprocessing. The digital oscilloscope, harmonic analyzer, spectrum analyzer and LCR meter in the acquisition unit, together with the Hall effect current sensor, can fully capture the dynamic changes of the laser power supply. The data preprocessing unit ensures the accuracy and stability of the data through denoising, outlier detection, data smoothing and dimensionless processing. In particular, by accurately extracting the voltage change data group, the current harmonic data group, the power supply high-frequency noise data group and the filter capacitor self-induction voltage data group, the system can better identify and respond to power fluctuations and interference, thereby significantly improving the stability and reliability of the laser equipment, so that it can still maintain efficient output under complex working conditions.

[0081] Example 3

[0082] This embodiment is explained in Example 2. Please refer to Figure 1 , specifically: the laser power supply data analysis module includes a voltage instantaneous change calculation unit, a current harmonic component calculation unit and a power supply high-frequency noise calculation unit;

[0083] The voltage instantaneous change calculation unit is used to summarize and calculate the voltage instantaneous change coefficient Vt according to the acquired voltage change data group;

[0084] The voltage instantaneous change coefficient Vt is obtained by the following formula:

[0085] In the formula, Indicates the voltage fluctuation time interval;

[0086] The current harmonic component calculation unit is used to summarize and calculate the current harmonic component coefficient Fl according to the acquired current harmonic data group;

[0087] The current harmonic component coefficient F1 is obtained by the following formula:

[0088] In the formula, represents the nth current harmonic component, represents the nth harmonic frequency, represents the nth harmonic amplitude, t represents the time variable, sin represents the sine function, represents the sinusoidal oscillation characteristics of harmonics over time, represents pi;

[0089] The power supply high frequency noise calculation unit is used to summarize and calculate the power supply high frequency noise coefficient Nf according to the acquired power supply high frequency noise data group;

[0090] The power supply high frequency noise coefficient Nf is obtained by the following formula:

[0091] In the formula, ∫ represents the integral function, f1 represents the lower limit of integration, f2 represents the upper limit of integration, and d represents the differential symbol in calculus.

[0092] In this embodiment, by introducing a voltage instantaneous change calculation unit, a current harmonic component calculation unit, and a power supply high-frequency noise calculation unit, an accurate quantitative analysis of the laser power supply performance is achieved. By calculating the voltage instantaneous change coefficient Vt, the current harmonic component coefficient Fl, and the power supply high-frequency noise coefficient Nf, the system can fully grasp the subtle fluctuations and potential hidden dangers of the power supply performance, and make fine adjustments to these key parameters. These calculation units not only improve the stability and reliability of the power supply output, but also can respond to and adapt to changes in the power supply environment in real time, thereby significantly reducing the risk of failure of the laser equipment due to unstable power supply. This precise control capability and dynamic adjustment function make the laser equipment perform better in high-precision applications and significantly improve the overall operating efficiency and safety of the system.

[0093] Example 4

[0094] This embodiment is explained in Example 3, please refer to Figure 1 ,Specifically: the laser output analysis module includes a laser output calculation unit and a laser output stability evaluation unit;

[0095] The laser output calculation unit is used to summarize and calculate the laser output stability coefficient JSW according to the obtained voltage instantaneous change coefficient Vt, current harmonic component coefficient Fl and power supply high-frequency noise coefficient Nf;

[0096] The laser output stability coefficient JSW is obtained by the following formula:

[0097] In the formula, is the control coefficient, represents the sum of the current harmonic components Fl, represents an exponential function with a natural constant as the base, and ∑ represents a summation function.

[0098] The laser output stability evaluation unit presets a first laser output stability threshold M and a second laser output stability threshold N based on the average value of historical laser output stability data, and makes a preliminary comparative evaluation with the obtained laser output stability coefficient JSW to analyze the fluctuation of the laser output. The specific evaluation scheme is as follows:

[0099] When the laser output stability coefficient JSW> the preset first laser output stability threshold M, it means that the laser output is stable and no adjustment is required;

[0100] When the preset first laser output stability threshold M≥ the laser output stability coefficient JSW≥ the preset second laser output stability threshold N, it indicates that the laser output fluctuates. At this time, a first control instruction is generated, and the control instruction is transmitted to the filter adjustment module for adjustment, and the second evaluation mechanism is triggered;

[0101] When the laser output stability coefficient JSW is less than the preset second laser output stability threshold N, it means that the laser output stability is lower than the lowest adjustable value. At this time, the equipment needs to be stopped immediately for inspection.

[0102] In this embodiment, the combined use of the laser output calculation unit and the stability evaluation unit in the laser output analysis module provides the ability to finely manage the laser output stability. The system can not only calculate the laser output stability coefficient JSW through complex mathematical formulas, but also automatically identify and analyze the fluctuation of the laser output based on the preset first laser output stability threshold M and second laser output stability threshold N. When the laser output stability coefficient JSW is abnormal, the system can quickly generate control instructions and trigger further evaluation mechanisms to ensure that the laser equipment always maintains the best output stability during operation. This automated control and precise evaluation function significantly improves the reliability and production efficiency of the equipment, while reducing the number of shutdowns and maintenance caused by unstable laser output, ensuring the continuous and efficient operation of the equipment.

[0103] Example 5

[0104] This embodiment is explained in Example 1, please refer to Figure 1 , specifically: the filtering and regulating module includes a filtering capacitor self-induction voltage calculating unit and a power supply filtering and regulating unit;

[0105] The filter capacitor self-induction voltage calculation unit is used to summarize and calculate the obtained filter capacitor self-induction voltage data group to obtain the filter capacitor self-induction voltage coefficient Vc;

[0106] The filter capacitor self-induction voltage coefficient Vc is obtained by the following formula:

[0107] In the formula, represents the change of current I with time t, Represents the time interval between two time points. It means the current from time t to The increment of time, lim represents the limit operation function.

[0108] The power supply filter adjustment unit includes a power supply filter automatic adjustment calculation unit and a power supply filter evaluation unit;

[0109] The power filter automatic adjustment calculation unit is triggered when the first control instruction is obtained, and the optimization objective function formula is further constructed to summarize and calculate the voltage instantaneous change coefficient Vt, the current harmonic component coefficient Fl, the power supply high-frequency noise coefficient Nf, the filter capacitor self-inductance voltage coefficient Vc and the laser output stability coefficient JSW to obtain the power filter automatic adjustment coefficient DLZ; the power filter automatic adjustment coefficient DLZ is obtained by the following formula;

[0110] In the formula, ∑ represents the summation function, It represents the combined influence of voltage instantaneous variation coefficient Vt, current harmonic component coefficient Fl and power supply high-frequency noise coefficient Nf.

[0111] When the power filter evaluation unit indicates that there is fluctuation through preliminary calculation of the laser output stability, the second evaluation mechanism is started. The second evaluation mechanism performs a secondary comparative evaluation through a preset power filter threshold Z and the obtained power filter automatic adjustment coefficient DLZ, and generates corresponding optimization information according to the relevant evaluation results. The specific evaluation scheme is as follows;

[0112] When the power filter automatic adjustment coefficient DLZ ≤ the preset power filter threshold Z, it means that the current filtering effect is qualified and no further operation is required;

[0113] When the power filter automatic adjustment coefficient DLZ is greater than the preset power filter threshold Z, it means that the current filtering effect is unqualified. At this time, the filter equipment of the laser power supply is further adjusted, and the adjusted output is sent to the laser power supply data analysis module for iterative calculation and evaluation until it is qualified.

[0114] In this embodiment, through the synergy of the filter capacitor self-induction voltage calculation unit and the power supply filter adjustment unit, the deep optimization and precise control of the laser power supply performance are achieved. The system constructs an optimization objective function formula, comprehensively calculates various power supply parameters, obtains the power supply filter automatic adjustment coefficient DLZ, and evaluates the filtering effect in real time by performing a secondary comparison with the preset power supply filter threshold Z. When the filtering effect is not good, the system can automatically trigger further adjustments and iterative calculations to ensure the high stability of the laser output. This mechanism not only improves the overall efficiency of the laser power supply, but also effectively reduces the impact of power supply fluctuations on laser output, ensuring the stable operation of laser equipment in complex working environments, thereby greatly enhancing the reliability and intelligence level of the system.

[0115] Example 6

[0116] See also Figure 1 and Figure 2 , a laser power supply control method based on automatic adjustment, comprising the following steps:

[0117] Step 1: An integrated sensor group and acquisition equipment installed on the laser power supply equipment collects the laser power supply performance data in real time, and pre-processes the collected laser power supply performance data to obtain a power quality data set and a filter capacitor self-induction voltage data set;

[0118] Step 2: Summarize and calculate the acquired power quality data set to obtain the voltage instantaneous change coefficient Vt, the current harmonic component coefficient Fl and the power supply high-frequency noise coefficient Nf;

[0119] Step 3: Summarize and calculate the voltage instantaneous change coefficient Vt, current harmonic component coefficient Fl and power supply high-frequency noise coefficient Nf to obtain the laser output stability coefficient JSW, and make a preliminary comparative evaluation with the preset first laser output stability threshold M and the preset second laser output stability threshold N, and trigger the secondary evaluation mechanism according to the evaluation results;

[0120] Step 4: Summarize and calculate the obtained filter capacitor self-induction voltage data group, obtain the filter capacitor self-induction voltage coefficient Vc, and summarize and calculate the obtained voltage instantaneous change coefficient Vt, current harmonic component coefficient Fl, power supply high-frequency noise coefficient Nf and laser output stability coefficient JSW to obtain the power supply filter automatic adjustment coefficient DLZ, and start the second evaluation mechanism, which is used to preset the power supply filter threshold Z and the power supply filter automatic adjustment coefficient DLZ for secondary comparative evaluation, and generate control information according to the evaluation results.

[0121] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A laser power supply control system based on automatic adjustment, characterized in that: It includes a laser power data acquisition module, a laser power data analysis module, a laser output analysis module and a filter adjustment module; The laser power supply data acquisition module is used for an integrated sensor group and acquisition equipment installed on the laser power supply device to collect laser power supply performance data in real time, and pre-process the collected laser power supply performance data to obtain a power quality data set and a filter capacitor self-induction voltage data set; The laser power supply data acquisition module includes a laser power supply data acquisition unit and a data preprocessing unit; The laser power supply data acquisition unit is used to install corresponding acquisition equipment and integrated sensor group on the laser power supply equipment to collect laser power supply performance data in real time; The acquisition equipment includes a digital oscilloscope, a harmonic analyzer, a spectrum analyzer and an LCR meter; The integrated sensor group includes a Hall effect current sensor; The data preprocessing unit is used to perform denoising, outlier detection, data smoothing and dimensionless processing on the collected laser power supply performance data to obtain a power quality data set and a filter capacitor self-induction voltage data set; The power quality data set includes a voltage variation data set, a current harmonic data set and a power supply high-frequency noise data set; The voltage variation data set includes a voltage fluctuation amplitude bf and a step change dv of a voltage derivative; The current harmonic data group includes fundamental current jl, harmonic amplitude xf and harmonic frequency xp; The power supply high-frequency noise data group includes high-frequency noise voltage nf, noise bandwidth and noise power density pn; The filter capacitor self-induction voltage data set includes a filter capacitor self-induction voltage data group; The filter capacitor self-induction voltage data group includes the filter capacitor self-inductance value lc, the current I and the filter capacitor internal resistance rc; The laser power supply data analysis module is used to summarize and calculate the acquired power quality data set to obtain the voltage instantaneous change coefficient Vt, the current harmonic component coefficient Fl and the power supply high-frequency noise coefficient Nf; The laser power supply data analysis module includes a voltage instantaneous change calculation unit, a current harmonic component calculation unit and a power supply high-frequency noise calculation unit; The voltage instantaneous change calculation unit is used to summarize and calculate the voltage instantaneous change coefficient Vt according to the acquired voltage change data group; The voltage instantaneous change coefficient Vt is obtained by the following formula: In the formula, Indicates the voltage fluctuation time interval; The current harmonic component calculation unit is used to summarize and calculate the current harmonic component coefficient Fl according to the acquired current harmonic data group; The current harmonic component coefficient F1 is obtained by the following formula: In the formula, represents the nth current harmonic component, represents the nth harmonic frequency, represents the nth harmonic amplitude, t represents the time variable, sin represents the sine function, Represents pi; the laser output analysis module is used to summarize and calculate the obtained voltage instantaneous change coefficient Vt, current harmonic component coefficient Fl and power supply high-frequency noise coefficient Nf, obtain the laser output stability coefficient JSW, and compare and evaluate it with the preset first laser output stability threshold M and the preset second laser output stability threshold N, and trigger the secondary evaluation mechanism according to the evaluation results; The filter adjustment module is used to summarize and calculate the obtained filter capacitor self-induction voltage data set, obtain the filter capacitor self-induction voltage coefficient Vc, and summarize and calculate the obtained voltage instantaneous change coefficient Vt, current harmonic component coefficient Fl, power supply high-frequency noise coefficient Nf and laser output stability coefficient JSW, obtain the power supply filter automatic adjustment coefficient DLZ, and start the second evaluation mechanism, the second evaluation mechanism is used to preset the power supply filter threshold Z and the power supply filter automatic adjustment coefficient DLZ for secondary comparison and evaluation, and generate control information according to the evaluation results.

2. According to claim 1, a laser power control system based on automatic adjustment is characterized in that: The power supply high frequency noise calculation unit is used to summarize and calculate the power supply high frequency noise coefficient Nf according to the acquired power supply high frequency noise data group; The power supply high frequency noise coefficient Nf is obtained by the following formula: In the formula, ∫ represents the integral function, f1 represents the lower limit of integration, f2 represents the upper limit of integration, and d represents the differential symbol in calculus.

3. The laser power control system based on automatic adjustment according to claim 2, characterized in that: The laser output analysis module includes a laser output calculation unit and a laser output stability evaluation unit; The laser output calculation unit is used to summarize and calculate the laser output stability coefficient JSW according to the obtained voltage instantaneous change coefficient Vt, current harmonic component coefficient Fl and power supply high-frequency noise coefficient Nf; The laser output stability coefficient JSW is obtained by the following formula: In the formula, is the control coefficient, represents the sum of the current harmonic components Fl, represents an exponential function with a natural constant as the base, and ∑ represents a summation function.

4. The laser power control system based on automatic adjustment according to claim 3 is characterized in that: The laser output stability evaluation unit presets a first laser output stability threshold M and a second laser output stability threshold N based on the average value of historical laser output stability data, and makes a preliminary comparative evaluation with the obtained laser output stability coefficient JSW to analyze the fluctuation of the laser output. The specific evaluation scheme is as follows: When the laser output stability coefficient JSW> the preset first laser output stability threshold M, it means that the laser output is stable and no adjustment is required; When the preset first laser output stability threshold M≥ the laser output stability coefficient JSW≥ the preset second laser output stability threshold N, it indicates that the laser output fluctuates. At this time, a first control instruction is generated, and the control instruction is transmitted to the filter adjustment module for adjustment, and the second evaluation mechanism is triggered; When the laser output stability coefficient JSW is less than the preset second laser output stability threshold N, it means that the laser output stability is lower than the lowest adjustable value. At this time, the equipment needs to be stopped immediately for inspection.

5. The laser power control system based on automatic adjustment according to claim 1, characterized in that: The filter adjustment module includes a filter capacitor self-induction voltage calculation unit and a power supply filter adjustment unit; The filter capacitor self-induction voltage calculation unit is used to summarize and calculate the obtained filter capacitor self-induction voltage data group to obtain the filter capacitor self-induction voltage coefficient Vc; The filter capacitor self-induction voltage coefficient Vc is obtained by the following formula: In the formula, represents the change of current I with time t, Represents the time interval between two time points. It means the current from time t to The increment of time, lim represents the limit operation function.

6. The laser power control system based on automatic adjustment according to claim 5, characterized in that: The power supply filter adjustment unit includes a power supply filter automatic adjustment calculation unit and a power supply filter evaluation unit; The power filter automatic adjustment calculation unit is triggered when the first control instruction is obtained, and further constructs an optimization objective function formula, summarizes and calculates the obtained voltage instantaneous change coefficient Vt, current harmonic component coefficient Fl, power supply high-frequency noise coefficient Nf, filter capacitor self-inductance voltage coefficient Vc and laser output stability coefficient JSW to obtain the power filter automatic adjustment coefficient DLZ; The power supply filter automatic adjustment coefficient DLZ is obtained by the following formula: In the formula, ∑ represents the summation function, It represents the combined influence of voltage instantaneous variation coefficient Vt, current harmonic component coefficient Fl and power supply high frequency noise coefficient Nf.

7. The laser power control system based on automatic adjustment according to claim 6 is characterized in that: When the power filter evaluation unit indicates that there is fluctuation through preliminary calculation of the laser output stability, the second evaluation mechanism is started. The second evaluation mechanism performs a secondary comparative evaluation through a preset power filter threshold Z and the obtained power filter automatic adjustment coefficient DLZ, and generates corresponding optimization information according to the relevant evaluation results. The specific evaluation scheme is as follows; When the power filter automatic adjustment coefficient DLZ ≤ the preset power filter threshold Z, it means that the current filtering effect is qualified and no further operation is required; When the power filter automatic adjustment coefficient DLZ is greater than the preset power filter threshold Z, it means that the current filtering effect is unqualified. At this time, the filter equipment of the laser power supply is further adjusted, and the adjusted output is sent to the laser power supply data analysis module for iterative calculation and evaluation until it is qualified.

8. A laser power control method based on automatic adjustment, applied to a laser power control system based on automatic adjustment according to any one of claims 1 to 7, characterized in that: The following steps are involved: Step 1: An integrated sensor group and acquisition equipment installed on the laser power supply equipment collects the laser power supply performance data in real time, and pre-processes the collected laser power supply performance data to obtain a power quality data set and a filter capacitor self-induction voltage data set; Step 2: Summarize and calculate the acquired power quality data set to obtain the voltage instantaneous change coefficient Vt, the current harmonic component coefficient Fl and the power supply high-frequency noise coefficient Nf; Step 3: Summarize and calculate the voltage instantaneous change coefficient Vt, current harmonic component coefficient Fl and power supply high-frequency noise coefficient Nf to obtain the laser output stability coefficient JSW, and make a preliminary comparative evaluation with the preset first laser output stability threshold M and the preset second laser output stability threshold N, and trigger the secondary evaluation mechanism according to the evaluation results; Step 4: Summarize and calculate the obtained filter capacitor self-induction voltage data group, obtain the filter capacitor self-induction voltage coefficient Vc, and summarize and calculate the obtained voltage instantaneous change coefficient Vt, current harmonic component coefficient Fl, power supply high-frequency noise coefficient Nf and laser output stability coefficient JSW to obtain the power supply filter automatic adjustment coefficient DLZ, and start the second evaluation mechanism, which is used to preset the power supply filter threshold Z and the power supply filter automatic adjustment coefficient DLZ for secondary comparative evaluation, and generate control information according to the evaluation results.

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