Dynamic control system of hydraulic machine

Abstract

The invention relates to the technical field of dynamic control, in particular to a dynamic control system of a hydraulic machine. The system comprises an acquisition and analysis unit, a data judgment unit, a data adjustment unit, a detection and comparison unit and a control strategy unit, wherein the detection and comparison unit receives command data of load increase in the data judgment unit and detects that response speed delay exists. According to the invention, the detection and comparison unit obtains historical pressure data from the acquisition and analysis unit according to command data of load increase in the data judgment unit, and then obtains adjusted pressure data from the data adjustment unit; the response speed algorithm is used for calculating the response speed according to the historical pressure data and the adjusted pressure data, the calculated response speed data and the set response speed threshold value are used for detecting and comparing the slow response speed, the speed delay condition can be responded and fed back in time, and corresponding measures are taken for adjustment or repair; the service life and the stability of the hydraulic machine are improved.

Description

Technical Field

[0001] The invention relates to the technical field of dynamic control, in particular to a dynamic control system for a hydraulic press. Background Art

[0002] Hydraulic press dynamic control is a system used to monitor, adjust and control various parameters of the hydraulic press in real time during its movement. It can achieve precise control of its operating status, improve production efficiency, product quality and system stability, and reduce energy consumption and maintenance costs. It is usually composed of multiple components, including sensors, actuators, controllers and feedback loops, and is suitable for hydraulic equipment control applications in various industrial fields. Since the hydraulic press will generate vibration and impact during its movement, the vibration and impact will cause wear of the seals in the hydraulic press, thereby causing pipeline leakage problems, which will lead to a decrease in sealing performance and reduce the stability of the hydraulic press control. At the same time, the pipeline leakage problem will cause the pressure to drop, and the hydraulic machine will try to increase the pressure level to maintain the operation of the hydraulic press. The increase in pressure causes a sudden increase in load, making the hydraulic press unable to respond in time, resulting in a slow response speed and a response speed delay effect, which greatly reduces the controllability of the hydraulic press. In order to avoid the decrease in sealing performance and the reduction in the stability of the hydraulic press control, we provide a hydraulic press dynamic control system. Summary of the invention

[0003] The object of the present invention is to provide a hydraulic press dynamic control system to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides a hydraulic press dynamic control system, comprising an acquisition and analysis unit, a data judgment unit, a data adjustment unit, a detection and comparison unit, and a control strategy unit; The acquisition and analysis unit acquires and processes the impact and vibration data, seal status data and historical data in the hydraulic press, and then analyzes the wear of the processed seal according to the processed impact and vibration data and calculates the sealing performance data value; The data judgment unit is used to receive the sealing performance data value calculated in the acquisition and analysis unit and to judge the sealing performance degradation and load increase; The data adjustment unit is used to receive the command determined by the data determination unit and obtain the sealing performance data value calculated by the analysis unit, and use the PID control algorithm to adjust the pressure according to the calculated sealing performance data value. The regulated pressure data is transmitted to the data judgment unit, the data judgment unit calculates the power value according to the regulated pressure data, and uses the calculated power value to judge whether there is a load increase in the hydraulic press; The implementation steps of calculating pressure using PID control algorithm: Step 1: First obtain the set sealing performance data value and calculated sealing performance data values , and use the set sealing performance data value Calculated sealing performance data values Subtract and get the sealing performance deviation value ; Step 2: Adjust the proportional performance , integral performance , Differential performance Three parameters are used to calculate the output, specifically: From the ratio performance Deviation value from sealing performance Proportional performance gain in the proportional performance part ; From the integral performance Deviation value from sealing performance Gain integral performance from proportional performance , and then the sealing performance deviation value Perform integral performance calculations and obtain integral performance deviations , and then from the integral performance deviation The time interval for obtaining the integral performance ; From the differential performance Deviation value from sealing performance Gaining derivative performance from proportional performance , and then the sealing performance deviation value Perform differential performance calculations and obtain differential performance deviations , and then from the differential performance deviation The time interval for obtaining the differential performance , according to the differential performance deviation Time interval with differential performance Divide and find the rate of change ; Step 3: Performance gain based on ratio , Sealing performance deviation value , integral performance gain , integral performance deviation , time interval for integrating performance , differential performance gain , differential performance deviation and rate of change Calculate the pressure and get the calculated pressure , which is the calculated pressure data , the specific algorithm formula is: ; The detection and comparison unit is used to receive the command data of the load increase in the data judgment unit and calculate the response speed and detect the existence of response speed delay; The control strategy unit is used to receive the corresponding speed data calculated in the detection and comparison unit and the pressure data adjusted in the data adjustment unit and formulate a control strategy.

[0005] As a further improvement of the present technical solution, the acquisition and analysis unit uses an impact sensor and a vibration sensor to acquire impact and vibration data in the hydraulic press, and then acquires seal status data and historical data in the hydraulic press, and processes the acquired data, and then uses spectrum analysis to process the impact and vibration data, and analyzes the wear condition of the seal through the processed data, and uses linear regression to calculate the sealing performance data value of the analyzed wear condition data and the processed seal status data.

[0006] As a further improvement of the technical solution, the steps of implementing the sealing performance analysis using linear regression in the acquisition and analysis unit are as follows: Step 1: First collect and analyze the seal wear data and processed seal status data , and obtain the processed seal status data Sample dataset in and seal wear , sample data set , Refers to the sample dataset The first sample in Refers to the sample dataset Middle samples, refers to the sample size; Step ②: According to the analyzed seal wear data Seal status data with processing Analyze characteristic variables related to sealing performance , characteristic variables Features are analyzed seal wear data Wear index data in ; Step 3: According to the analyzed seal wear data and processed seal status data describe and According to the sample data set Building a regression model , the sample data set Divide into training set and test set ; Training set For training regression models , test set For evaluating regression models The true target value of the sample in ; Step ④: Based on the trained regression model For the test set The feature data in is predicted to obtain the corresponding predicted value , the sample data set The samples from 1 to 2 The samples are summed and the sum term is obtained ; Step 5: According to the corresponding predicted value , summation term , the true target value of the sample , Sample size Calculate the sealing performance data value and obtain the calculated sealing performance data value , algorithm formula: ; in, Refers to the constant term.

[0007] As a further improvement of the technical solution, the data judgment unit is used to receive the sealing performance data value calculated in the acquisition analysis unit, and use the set sealing performance data value and the calculated sealing performance data value to make a judgment. The specific judgment situations include: Case 1: When the calculated sealing performance data value Greater than the set sealing performance data value When the number of pipes is less than 100, it indicates that there is no pipeline leakage problem; Case 2: When the calculated sealing performance data value Less than the set sealing performance data value When the seal performance is reduced, it means that the pipeline leakage problem exists. In order to avoid pipeline leakage caused by the reduction of seal performance, the command to judge whether there is a reduction in seal performance is Passed into the data conditioning unit.

[0008] As a further improvement of the present technical solution, the data judgment unit receives the pressure data adjusted in the data adjustment unit and obtains the flow data in the analysis unit, and calculates the power value according to the adjusted pressure data and flow data using a power algorithm.

[0009] As a further improvement of the technical solution, the data judgment unit uses the calculated power value and the set target power value for judgment, and the specific judgment situation is: Case ①: When the calculated power value Greater than the set target power value When the pressure value increases, the power changes, indicating that the load of the hydraulic press increases. The load increase command is transmitted to the detection and comparison unit. Case ②: When the calculated power value Less than the set target power value This indicates that there is no load increase on the hydraulic press.

[0010] As a further improvement of the technical solution, the detection and comparison unit is used to receive the command data of the load increase in the data judgment unit, the detection and comparison unit obtains the historical pressure data from the acquisition and analysis unit, and then obtains the adjusted pressure data from the data adjustment unit, and uses the response speed algorithm to calculate the response speed according to the historical pressure data and the adjusted pressure data, and uses the calculated response speed data to perform detection and comparison with the set response speed threshold. The specific detection and comparison situation is: Case 1: When the calculated response speed data Greater than the set response speed threshold When the detection comparison is done, the response speed is fast, indicating that there is no response speed delay; Case 2: When the calculated response speed data Less than the set response speed threshold When the detection comparison shows that the response speed is slow, it means that there is a response speed delay, and the response speed delay command data is transmitted to the control strategy unit.

[0011] As a further improvement of the present technical solution, the control strategy unit is used to receive the response speed delay command data and the calculated corresponding speed data in the detection and comparison unit, receive the historical data processed in the acquisition analysis unit and the pressure data adjusted in the data adjustment unit, and use the fuzzy control algorithm to formulate a control strategy based on the calculated corresponding speed data, the processed historical data and the adjusted pressure data, and transmit the formulated control strategy to the data adjustment unit for adjustment.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. In the dynamic control system of the hydraulic press, the data judgment unit obtains the sealing performance data value calculated in the analysis unit, and uses the set sealing performance data value and the calculated sealing performance data value to judge the pipeline leakage problem. It can timely discover the abnormal situation of pipeline sealing performance, which is helpful to ensure the safety of personnel and the environment. By comparing the set sealing performance data value with the actual calculated data value, it can timely warn and take measures, and solve the pipeline leakage problem at the same time, which can reduce the loss of resources and reduce the waste of resources.

[0013] 2. In the dynamic control system of the hydraulic press, the detection and comparison unit obtains the historical pressure data from the acquisition and analysis unit according to the command data of the load increase in the data judgment unit, and then obtains the adjusted pressure data from the data adjustment unit, and uses the response speed algorithm to calculate the response speed according to the historical pressure data and the adjusted pressure data, and uses the calculated response speed data and the set response speed threshold to perform a slow response speed detection and comparison, which can respond to speed delays and provide timely feedback, and take corresponding measures to adjust or repair, thereby improving the service life and stability of the hydraulic press. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is an overall block diagram of the present invention.

[0015] The meaning of each number in the figure is: 1. Acquisition and analysis unit; 2. Data judgment unit; 3. Data adjustment unit; 4. Detection and comparison unit; 5. Control strategy unit. DETAILED DESCRIPTION

[0016] The following will be combined with the accompanying drawings in 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.

[0017] Example 1

[0018] The present invention provides a hydraulic press dynamic control system, please refer to Figure 1 , including an acquisition and analysis unit 1, a data judgment unit 2, a data adjustment unit 3, a detection and comparison unit 4, and a control strategy unit 5; The acquisition and analysis unit 1 acquires the impact and vibration data, the seal status data and the historical data in the hydraulic press and processes them, and then analyzes the wear of the processed seal according to the processed impact and vibration data and calculates the sealing performance data value. The data judgment unit 2 is used to receive the sealing performance data value calculated in the acquisition and analysis unit 1 and judge the sealing performance degradation and load increase. The data adjustment unit 3 is used to receive the command judged in the data judgment unit 2 and the sealing performance data value calculated in the acquisition and analysis unit 1, and use the PID control algorithm to adjust the pressure according to the calculated sealing performance data value, and transmit the adjusted pressure data to the data judgment unit 2. The data judgment unit 2 calculates the power value according to the adjusted pressure data, and uses the calculated power value to judge whether the hydraulic press has a load increase. The detection and comparison unit 4 is used to receive the load increase command data in the data judgment unit 2 and calculate the response speed and detect the existence of response speed delay. The control strategy unit 5 is used to receive the corresponding speed data calculated in the detection and comparison unit 4 and the pressure data adjusted in the data adjustment unit 3 and formulate a control strategy.

[0019] The following is a refinement of the above units, see Figure 1 ; The acquisition and analysis unit 1 uses the impact sensor and the vibration sensor to acquire the impact and vibration data in the hydraulic press, and then acquires the seal status data and historical data in the hydraulic press, and processes the acquired data. By processing the acquired data, the deviation in the acquired data can be reduced and the quality of the data can be improved. The impact and vibration data processed by the spectrum analysis method are then used, and the wear of the seal is analyzed through the processed data, and the linear regression is used to calculate the sealing performance data value for the analyzed wear data and the processed seal status data. By analyzing the impact data, the wear of the seal can be discovered early, including the degree and position of wear. At the same time, combining the wear data and the historical data can provide a more comprehensive analysis perspective, which can reveal the performance of the seal under different working conditions, so as to compare and contrast with the current wear condition, and help to better understand the changes and evolution trends of the sealing performance; Historical data includes temperature, historical pressure, flow, lubrication conditions, environmental conditions data, and acquisition of proportional performance, integral performance, and differential performance; Steps to use spectrum analysis to analyze the wear of seals: Step 1: Collect and process shock and vibration data , and then process the shock and vibration data Perform noise removal to obtain noise-removed shock and vibration data ; Step 2: Remove the noise from the shock and vibration data Perform Fourier transform to remove noise from shock and vibration data Converted into frequency domain signal, we get spectrum signal data , and then the spectrum signal data Visualize and plot spectrogram ; Step 3: According to the spectrum Find the main frequency peaks on , peak Corresponding to the vibration frequency change caused by seal wear, the frequency component is identified based on the vibration frequency change , according to the frequency components Comparing the spectrum graphs in different situations , and obtain the spectrum data ; Step 4: Based on spectrum data And extract features from it, analyze the frequency components based on the extracted features Correlation between seal wear and seal wear, and finally obtain the analyzed seal wear data ; The steps for obtaining the sealing performance analysis using linear regression in the analysis unit 1 are as follows: Step 1: First collect and analyze the seal wear data and processed seal status data , and obtain the processed seal status data Sample dataset in and seal wear , sample data set , Refers to the sample dataset The first sample in Refers to the sample dataset Middle samples, refers to the sample size; Step 2: According to the analyzed seal wear data Seal status data with processing Analyze characteristic variables related to sealing performance , characteristic variables Features are analyzed seal wear data Wear index data in ; Step 3: According to the analyzed seal wear data and processed seal status data describe and According to the sample data set Building a regression model , the sample data set Divide into training set and test set ; Training set For training regression models , test set For evaluating regression models The true target value of the sample in ; Step ④: Based on the trained regression model For the test set The feature data in is predicted to obtain the corresponding predicted value , the sample data set The samples from 1 to 2 The samples are summed and the sum term is obtained ; Step 5: According to the corresponding predicted value , summation term , the true target value of the sample , Sample size Calculate the sealing performance data value and obtain the calculated sealing performance data value , algorithm formula: ; in, Refers to the constant term.

[0020] The data judgment unit 2 is used to receive the sealing performance data value calculated in the acquisition analysis unit 1, and use the set sealing performance data value and the calculated sealing performance data value to make a judgment. The specific judgment includes: Case 1: When the calculated sealing performance data value Greater than the set sealing performance data value When the number of pipes is less than 100, it indicates that there is no pipeline leakage problem; Case 2: When the calculated sealing performance data value Less than the set sealing performance data value When the seal performance is reduced, it means that the pipeline leakage problem exists. In order to avoid pipeline leakage caused by the reduction of seal performance, the command to judge whether there is a reduction in seal performance is The data is transmitted to the data adjustment unit 3.

[0021] The data adjustment unit 3 is used to receive the command of the data judgment unit 2 judging that there is a decrease in sealing performance and the sealing performance data value calculated in the acquisition and analysis unit 1, and obtain the proportional performance, integral performance and differential performance from the acquisition and analysis unit 1, and use the PID control algorithm to adjust the pressure according to the calculated sealing performance data value; The implementation steps of calculating pressure using PID control algorithm: Step 1: First obtain the set sealing performance data value and calculated sealing performance data values , and use the set sealing performance data value Calculated sealing performance data values Subtract and get the sealing performance deviation value ; Step 2: Adjust the proportional performance , integral performance , Differential performance Three parameters are used to calculate the output, specifically: From the ratio performance Deviation value from sealing performance Proportional performance gain in the proportional performance part , proportional performance The output regulation ratio required within a specific error range; From the integral performance Deviation value from sealing performance Gain integral performance from proportional performance , integral performance The integral adjustment ratio required in the control process and the sealing performance deviation value Perform integral performance calculations and obtain integral performance deviations , and then from the integral performance deviation The time interval for obtaining the integral performance ; From the differential performance Deviation value from sealing performance Gaining derivative performance from proportional performance , differential performance The differential adjustment ratio required in the control process and the sealing performance deviation value Perform differential performance calculations and obtain differential performance deviations , and then from the differential performance deviation The time interval for obtaining the differential performance , according to the differential performance deviation Time interval with differential performance Divide and find the rate of change ; Step 3: Performance gain based on ratio , Sealing performance deviation value , integral performance gain , integral performance deviation , time interval for integrating performance , differential performance gain , differential performance deviation and rate of change Calculate the pressure and get the calculated pressure , which is the calculated pressure data , the specific algorithm formula is: ; The data judgment unit 2 receives the pressure data adjusted in the data adjustment unit 3 and the flow data obtained in the analysis unit 1, and calculates the power value according to the adjusted pressure data and flow data using a power algorithm; Power algorithm formula: ; in, Refers to the calculated power value in watts, Refers to flow data in cubic meters per second. , Refers to the regulated pressure data in Pascals. ; Reuse the calculated power value The target power value is set Make a judgment, specific judgment situation: Case ①: When the calculated power value Greater than the set target power value When the pressure value increases, the power changes, indicating that the load of the hydraulic press increases, and the load increase command is transmitted to the detection and comparison unit 4; Case ②: When the calculated power value Less than the set target power value This indicates that there is no load increase on the hydraulic press.

[0022] The detection and comparison unit 4 is used to receive the command data of the load increase in the data judgment unit 2, the detection and comparison unit 4 obtains the historical pressure data from the acquisition and analysis unit 1, and then obtains the adjusted pressure data from the data adjustment unit 3, and calculates the response speed according to the historical pressure data and the adjusted pressure data using the response speed algorithm; The implementation steps for calculating the response speed using the response speed algorithm are: Step 1: First obtain the regulated pressure data and historical pressure data , historical pressure data It refers to the pressure data before the pressure is adjusted. The time period from when the data judgment unit 2 transmits the load increase command data to the detection and comparison unit 4 to when the detection and comparison unit 4 completely receives the load increase command data is ; Step ②: According to the adjusted pressure data , Historical Pressure Data and time period Calculate the response speed and obtain the calculated response speed data , the specific algorithm formula is: ; Reuse the calculated response speed data The response speed threshold is set Carry out detection and comparison, specific detection and comparison situation: Case 1: When the calculated response speed data Greater than the set response speed threshold When the detection comparison is done, the response speed is fast, indicating that there is no response speed delay; Case 2: When the calculated response speed data Less than the set response speed threshold When the response speed is slow, the detection comparison shows that there is a response speed delay, and the response speed delay command data is transmitted to the control strategy unit 5.

[0023] The control strategy unit 5 is used to receive the response speed delay command data and the calculated corresponding speed data in the detection and comparison unit 4, receive the historical data processed in the acquisition and analysis unit 1 and the pressure data adjusted in the data adjustment unit 3, and formulate the control strategy according to the calculated corresponding speed data, the processed historical data and the adjusted pressure data by using the fuzzy control algorithm, and transmit the formulated control strategy to the data adjustment unit 3 for adjustment; The implementation steps of formulating control strategy using fuzzy control algorithm are as follows: Step ①: First collect the corresponding speed data for calculation , processed historical data and regulated pressure data , and determine the target to be controlled, and calculate the corresponding speed data Set as a goal for control; Step ②: According to the calculated corresponding speed data , processed historical data and regulated pressure data Convert to fuzzy set , use the membership function to calculate the corresponding speed data , processed historical data and regulated pressure data Mapping to fuzzy sets Specific steps: 1. Calculate the corresponding speed data Fuzzy set divided into "slow", "medium", "fast" , the historical data processed Fuzzy set divided into "low", "medium", "high" , the regulated pressure data Fuzzy set divided into "low", "medium", "high" , for each fuzzy set , the corresponding speed data needs to be calculated according to the membership function , processed historical data and regulated pressure data Mapping to fuzzy sets superior; 2. Calculate the corresponding speed data , processed historical data and regulated pressure data Fuzzification is performed through membership functions to convert them into corresponding fuzzy sets The membership value on , indicating that the data belongs to each fuzzy set When the response speed is 60 milliseconds ( ), mapped to the “medium” fuzzy set through the triangular membership function On, we get the membership value 0.6, indicating the corresponding speed data of the response calculation is of “moderate” level; 3. Based on the historical data processed and regulated pressure data Perform the same fuzzification process and map them to the corresponding fuzzy sets On the above, we get their respective membership values , finally, the corresponding speed data is obtained , processed historical data and regulated pressure data In their respective fuzzy sets The membership value on These fuzzification results will be used as the input of fuzzy reasoning to determine the output fuzzy set ; Step 3: Establish a set of fuzzy rules based on the experience of response speed delay in the database to describe the input data and output control actions The relationship between the two, the form of the fuzzy rule can be similar to "when the corresponding speed data is calculated For slow and processed historical data For medium, the pressure data of the adjustment Increase pressure" description, specific steps: 1. Input data and output control actions The value range of , the corresponding speed data calculated Fuzzy set divided into "slow", "medium", "fast" , the regulated pressure data Divided into fuzzy sets of "increase" and "decrease" ; 2. Determine a set of fuzzy rules based on the experience of response speed delay in the database, and then establish a fuzzy rule library based on each set of fuzzy rules. , and describe the input data and output control actions The relationship between them is then expressed in a formal way. Each fuzzy rule includes a set of premises (input fuzzy set ) and a conclusion (output fuzzy set ), describes the corresponding speed data in the calculation For slow and processed historical data The control actions that should be taken under moderate conditions; Step ④: Fuzzy input data and fuzzy rule base Perform fuzzy reasoning to determine the fuzzy set of outputs , and from the fuzzy set The fuzzy value of the output is obtained , the fuzzy value of the output obtained by fuzzy inference Convert to actual output value , using the defuzzification method to find the fuzzy set of the output The central value of And execute corresponding control actions, and finally come up with the formulated control strategy.

[0024] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A hydraulic press dynamic control system, characterized in that: It includes an acquisition and analysis unit (1), a data judgment unit (2), a data adjustment unit (3), a detection and comparison unit (4), and a control strategy unit (5); The acquisition and analysis unit (1) acquires and processes the impact and vibration data, seal status data and historical data in the hydraulic press, and then analyzes the wear of the processed seal according to the processed impact and vibration data and calculates the sealing performance data value; The data judgment unit (2) is used to receive the sealing performance data value calculated by the acquisition analysis unit (1) and to judge whether the sealing performance is reduced or the load is increased; The data adjustment unit (3) is used to receive the command judged by the data judgment unit (2) and obtain the sealing performance data value calculated by the analysis unit (1), use the PID control algorithm to adjust the pressure according to the calculated sealing performance data value, and transmit the adjusted pressure data to the data judgment unit (2). The data judgment unit (2) calculates the power value according to the adjusted pressure data, and uses the calculated power value to judge whether the hydraulic press has a load increase; The implementation steps of calculating pressure using PID control algorithm: Step 1: First obtain the set sealing performance data value and calculated sealing performance data values , and use the set sealing performance data value Calculated sealing performance data values Subtract and get the sealing performance deviation value ; Step 2: Adjust the proportional performance , integral performance , Differential performance Three parameters are used to calculate the output, specifically: From the proportional performance Deviation value from sealing performance Proportional performance gain in the proportional performance part ; From the integral performance Deviation value from sealing performance Gain integral performance from proportional performance , and then the sealing performance deviation value Perform integral performance calculations and obtain integral performance deviations , and then from the integral performance deviation The time interval for obtaining the integral performance ; From the differential performance Deviation value from sealing performance Gaining derivative performance from proportional performance , and then the sealing performance deviation value Perform differential performance calculations and obtain differential performance deviations , and then from the differential performance deviation The time interval for obtaining the differential performance , according to the differential performance deviation Time interval with differential performance Divide and find the rate of change ; Step 3: Performance gain based on ratio , Sealing performance deviation value , integral performance gain , integral performance deviation , time interval for integrating performance , differential performance gain , differential performance deviation and rate of change Calculate the pressure and get the calculated pressure , which is the calculated pressure data , the specific algorithm formula is: ； The detection and comparison unit (4) is used to receive the load increase command data in the data judgment unit (2) and calculate the response speed and detect the presence of response speed delay; The control strategy unit (5) is used to receive the corresponding speed data calculated in the detection and comparison unit (4) and the pressure data adjusted in the data adjustment unit (3) and formulate a control strategy.

2. The hydraulic press dynamic control system according to claim 1, characterized in that: The acquisition and analysis unit (1) acquires the impact and vibration data in the hydraulic press by using the impact sensor and the vibration sensor, acquires the seal status data and historical data in the hydraulic press, processes the acquired data, processes the impact and vibration data by using the spectrum analysis method, analyzes the wear condition of the seal by using the processed data, and calculates the sealing performance data value by using the linear regression for the analyzed wear condition data and the processed seal status data.

3. The hydraulic press dynamic control system according to claim 2, characterized in that: The steps for implementing the sealing performance analysis using linear regression in the acquisition and analysis unit (1) are as follows: Step 1: First collect and analyze the seal wear data and processed seal status data , and obtain the processed seal status data Sample dataset in and seal wear , sample data set , Refers to the sample dataset The first sample in Refers to the sample dataset Middle samples, refers to the sample size; Step ②: According to the analyzed seal wear data Seal status data with processing Analyze characteristic variables related to sealing performance , characteristic variables Features are analyzed seal wear data Wear index data in ; Step 3: According to the analyzed seal wear data and processed seal status data describe and According to the sample data set Building a regression model , the sample data set Divide into training set and test set ; Training set For training regression models , test set For evaluating regression models The true target value of the sample in ; Step ④: Based on the trained regression model For the test set The feature data in is predicted to obtain the corresponding predicted value , the sample data set The samples from 1 to 2 The samples are summed and the sum term is obtained ; Step 5: According to the corresponding predicted value , summation term , the true target value of the sample , Sample size Calculate the sealing performance data value and obtain the calculated sealing performance data value , algorithm formula: ； in, Refers to the constant term.

4. The hydraulic press dynamic control system according to claim 2, characterized in that: The data judgment unit (2) is used to receive the sealing performance data value calculated in the acquisition analysis unit (1), and use the set sealing performance data value and the calculated sealing performance data value to make a judgment, and the specific judgment includes: Case 1: When the calculated sealing performance data value Greater than the set sealing performance data value When the number of pipes is less than 100, it indicates that there is no pipeline leakage problem; Case 2: When the calculated sealing performance data value Less than the set sealing performance data value When the seal performance is reduced, it means that the pipeline leakage problem exists. In order to avoid pipeline leakage caused by the reduction of seal performance, the command to judge whether there is a reduction in seal performance is The data is passed to the data conditioning unit (3).

5. The hydraulic press dynamic control system according to claim 4, characterized in that: The data judgment unit (2) receives the pressure data adjusted in the data adjustment unit (3) and the flow data obtained in the analysis unit (1), and calculates the power value according to the adjusted pressure data and flow data using a power algorithm.

6. The hydraulic press dynamic control system according to claim 5, characterized in that: The data judgment unit (2) uses the calculated power value and the set target power value to make a judgment, and the specific judgment situation is: Case ①: When the calculated power value Greater than the set target power value When the pressure value increases, the power changes, indicating that the load of the hydraulic press increases. The load increase command is transmitted to the detection and comparison unit (4); Case ②: When the calculated power value Less than the set target power value This indicates that there is no load increase on the hydraulic press.

7. The hydraulic press dynamic control system according to claim 5, characterized in that: The detection and comparison unit (4) is used to receive the load increase command data in the data judgment unit (2), the detection and comparison unit (4) obtains the historical pressure data from the acquisition and analysis unit (1), and then obtains the adjusted pressure data from the data adjustment unit (3), and uses the response speed algorithm to calculate the response speed according to the historical pressure data and the adjusted pressure data, and uses the calculated response speed data to perform detection and comparison with the set response speed threshold. The specific detection and comparison situation is: Case 1: When the calculated response speed data Greater than the set response speed threshold When the detection comparison is done, the response speed is fast, indicating that there is no response speed delay; Case 2: When the calculated response speed data Less than the set response speed threshold When the detection comparison shows that the response speed is slow, it means that there is a response speed delay, and the response speed delay command data is transmitted to the control strategy unit (5).

8. The hydraulic press dynamic control system according to claim 7, characterized in that: The control strategy unit (5) is used to receive the response speed delay command data and the calculated corresponding speed data in the detection and comparison unit (4), receive the historical data processed in the acquisition and analysis unit (1) and the pressure data adjusted in the data adjustment unit (3), and use the fuzzy control algorithm to formulate a control strategy based on the calculated corresponding speed data, the processed historical data and the adjusted pressure data, and transmit the formulated control strategy to the data adjustment unit (3) for adjustment.

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