Intelligent control method and system for vibrating rammer

Abstract

The application discloses a kind of intelligent control method and system of vibrating ram, belong to engineering machinery intelligent control technical field, the method includes the following steps: vibrating ram operation mode is divided into different operation levels according to operation difficulty;Make vibrating ram according to preset operation level work;Real-time pressure value and real-time vibration frequency are compared and analyzed with preset pressure value and preset vibration frequency in preset operation level respectively, control operation level is raised or falls, determine selected operation level;Corresponding target system pressure and target system flow are obtained;According to the comparison result of target system flow and real-time system flow, control motor real-time speed, and according to the comparison result of target system pressure and real-time system pressure, control real-time system pressure.The vibrating ram can select operation mode according to real-time feedback when working, with high degree of automation, ensure compaction effect, improve work efficiency, and can adjust hydraulic system flow pressure and engine power according to demand, improve energy-saving effect.

Description

Technical Field

[0001] This invention relates to an intelligent control method and system for vibratory rammers, belonging to the field of intelligent control technology for engineering machinery. Background Technology

[0002] Hydraulic vibratory compactors play an irreplaceable role in the infrastructure sector. With continuous societal development, the level of intelligence and automation in construction machinery operations is increasing. However, current domestic focus on vibratory compactors remains on high pressure capability, flexibility, compactness, and high reliability, with limited application of intelligent control. At present, vibratory compactors utilize hydraulic control, meaning the compaction effect and operation largely depend on the operator, placing high demands on the operator, resulting in high labor intensity. Furthermore, the degree of automation is low, making it impossible to adjust the hydraulic system flow and pressure and engine power according to demand, leading to limited energy-saving effects. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide an intelligent control method and system for vibratory tampers. During operation, the vibratory tamper can automatically select the operation mode based on real-time feedback, which has a high degree of automation, ensures the compaction effect, improves the operation efficiency, and can adjust the flow and pressure of the hydraulic system and the power of the engine according to the needs, thereby improving the energy-saving effect.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0005] In a first aspect, the present invention provides an intelligent control method for a vibratory compactor, comprising the following steps:

[0006] The vibratory compactor operation mode is divided into different operation levels according to the difficulty of the operation;

[0007] It receives a preset operation level signal, enables the vibratory rammer to operate according to the preset operation level, and collects the real-time pressure value and real-time motor speed during the operation of the vibratory rammer.

[0008] The real-time motor speed is converted into the real-time vibration frequency. The real-time pressure value and the real-time vibration frequency are then compared and analyzed with the preset pressure value and the preset vibration frequency in the preset work level. Based on the analysis results, the work level is adjusted up or down to determine the selected work level.

[0009] Based on the selected operation level, obtain the corresponding target system pressure and target system flow rate, convert the target system flow rate into the target vibration frequency, and then collect the real-time system pressure and real-time motor speed during the vibratory compaction operation. Convert the real-time motor speed into the real-time vibration frequency, and then convert the real-time vibration frequency into the real-time system flow rate.

[0010] The motor speed is controlled based on the comparison between the target system flow rate and the real-time system flow rate to ensure that the error between the target vibration frequency and the real-time vibration frequency meets the design value. Similarly, the real-time system pressure is controlled based on the comparison between the target system pressure and the real-time system pressure to ensure that the error between the target system pressure and the real-time system pressure meets the design value.

[0011] The classification of vibratory compaction operation modes into different operation levels according to the difficulty of operation includes:

[0012] Based on the different particle size, density and moisture content of the soil, the vibratory compaction operation mode is divided into 5 levels from level 1 to level 5, with the difficulty of compaction increasing from low to high.

[0013] The preset operating level is selected by the driver based on soil conditions or automatically by the system.

[0014] The step involves comparing and analyzing the real-time pressure value and real-time vibration frequency with the preset pressure value and preset vibration frequency in the preset work level, and controlling the adjustment or demotion of the work level based on the analysis results. The selected work level includes:

[0015] If the real-time vibration frequency f1 value is different from the preset vibration frequency f i Satisfy | f i -f1 |=Δf≤y%f i And the real-time pressure value P1 is the same as the preset pressure value P i Satisfy P i -P1=Δp≥x%P i If the preset task level is deemed too high, it will automatically be downgraded by one level, and the above process will be repeated until the Δp difference is less than x%P. i Or the job level is reduced to the lowest level;

[0016] If the real-time vibration frequency f1 value is different from the preset vibration frequency f i Satisfy | f i -f1 |=Δf≤y%f i And the real-time pressure value P1 is the same as the preset pressure value P i Satisfy P1-P i =Δp≥x%P i If the preset task level is deemed too low, it will be automatically raised by one level, and the above process will be repeated until the Δp difference is less than x%P. i Or, upgrade the work level to the highest level;

[0017] If the real-time vibration frequency f1 value is different from the preset vibration frequency f i Satisfy | f i -f1 |=Δf>y%f i If the preset task level is too low, it will be automatically raised by one level, and the above process will be repeated until the difference in Δp is less than x%P.i Or, upgrade the work level to the highest level;

[0018] Where Δf represents the frequency difference, Δp represents the pressure difference, and x and y are empirical values.

[0019] The values ​​of x and y are both in the range of 10 to 20.

[0020] If the job level is the lowest level, and P i -P1≥z%P i If the control system issues a warning message to remind the driver that the vibratory tamper is in an unloaded state, z is an empirical value with a range of 30 to 40.

[0021] After determining the selected work level, if the real-time vibration frequency f1 and the real-time pressure value P1 continuously exhibit significant changes, satisfying |f i -f1 |=Δf>y%f i Or | P i -P1|=Δp≥x%P i If this happens, it is determined that the working conditions have changed, and the process of re-determining and selecting the work level is initiated.

[0022] Secondly, the present invention provides an intelligent control system for a vibratory rammer, comprising an electric pump, wherein the inlet of the electric pump is connected to a hydraulic oil tank, the outlet of the electric pump is connected to port 1 of an electric directional valve, port 2 of the electric directional valve returns to the hydraulic oil tank, ports 3 and 4 of the electric directional valve are respectively connected to the outlet and inlet of the vibratory rammer motor, the vibratory rammer motor is equipped with a speed sensor, a pressure sensor is installed on the pipeline between port 4 of the electric directional valve and the inlet of the vibratory rammer motor and is connected to one end of an electro-proportional relief valve, the other end of the electro-proportional relief valve returns to the hydraulic oil tank, the speed sensor and the pressure sensor are electrically connected to the signal input terminal of an analysis and control module, and the signal output terminal of the analysis and control module is electrically connected to the control switches of the electric pump, the electric directional valve and the electro-proportional relief valve.

[0023] The pipeline between the oil outlet of the vibratory tamping motor and port 3 of the electric reversing valve is connected to one end of the first overflow valve, and the other end of the first overflow valve flows back to the hydraulic oil tank.

[0024] The pipeline between the oil outlet of the electric pump and port 1 of the electric reversing valve is connected to one end of the second relief valve, and the other end of the second relief valve flows back to the hydraulic oil tank.

[0025] The beneficial effects of this invention are as follows: This invention provides an intelligent control method and system for vibratory compactors, which divides the vibratory compactor operation mode into different operation levels according to the difficulty of the operation, thereby improving the accuracy of the operation. It mainly includes a preset operation level process before the formal operation and a selected operation level process for the formal operation. The whole process is automatically controlled with a high degree of automation. During the operation of the vibratory compactor, it can select the operation mode itself according to real-time feedback to ensure the compaction effect and improve the operation efficiency. It can also adjust the flow and pressure of the hydraulic system and the engine power according to the needs to improve the energy-saving effect.

[0026] If the job level is the lowest level, and P i -P1≥z%P i If the system detects that the vibratory tamper is in a no-load state, it will issue a warning message to remind the driver that the vibratory tamper is in a no-load state. The system can automatically identify the no-load state to prevent equipment damage. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of an intelligent control system for a vibratory tamper according to the present invention;

[0028] The attached diagram is labeled as follows: 1-Electric pump; 2-Hydraulic tank; 3-Electric directional valve; 4-First relief valve; 5-Pressure sensor; 6-Vibratory tamping motor; 7-Speed ​​sensor; 8-Electro-proportional relief valve; 9-Analysis and control module; 10-Second relief valve. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to illustrate the technical solution of the present invention more clearly, and should not be used to limit the scope of protection of the present invention.

[0030] Example 1

[0031] like Figure 1 As shown, this invention discloses an intelligent control system for a vibratory rammer, including an electric pump 1. The inlet of the electric pump 1 is connected to a hydraulic oil tank 2, and the outlet of the electric pump 1 is connected to port 1 of an electric directional valve 3. Port 2 of the electric directional valve 3 returns the oil to the hydraulic oil tank 2. Ports 3 and 4 of the electric directional valve 3 are connected to the outlet and inlet of the vibratory rammer motor 6, respectively. When the electric directional valve 3 is working, ports 1 and 4 are connected, and ports 2 and 3 are connected. The electric pump 1 draws oil from the hydraulic oil tank 2, passes through ports 1 and 4 of the electric directional valve 3 into the vibratory rammer motor 6, and then flows out through ports 3 and 2 of the electric directional valve 3 back to the hydraulic oil tank 2.

[0032] A speed sensor 7 is installed on the vibratory rammer motor 6. A pressure sensor 5 is installed on the pipeline between port 4 of the electric directional valve 3 and the oil inlet of the vibratory rammer motor 6, and is connected to one end of the electro-proportional relief valve 8. The other end of the electro-proportional relief valve 8 returns to the hydraulic oil tank 2. The speed sensor 7 and the pressure sensor 5 are electrically connected to the signal input terminal of the analysis and control module 9. The signal output terminal of the analysis and control module 9 is electrically connected to the control switches of the electric pump 1, the electric directional valve 3, and the electro-proportional relief valve 8. The pressure sensor 5 detects the hydraulic pressure of the vibratory rammer drive system in real time; the motor speed sensor 7 collects the speed signal of the vibratory rammer excitation block in real time. The analysis and control module 9 analyzes the received data and then controls the electric pump 1, the electric directional valve 3, and the electro-proportional relief valve 8.

[0033] In addition, the pipeline between the oil outlet of the vibratory tamper motor 6 and port 3 of the electric directional valve 3 is connected to one end of the first relief valve 4, and the other end of the first relief valve 4 returns to the hydraulic oil tank 2. The pipeline between the oil outlet of the electric pump 1 and port 1 of the electric directional valve 3 is connected to one end of the second relief valve 10, and the other end of the second relief valve 10 returns to the hydraulic oil tank 2.

[0034] This invention discloses an intelligent control method for a vibratory compactor, comprising the following steps:

[0035] Step 1: Divide the vibratory compactor operation mode into different operation levels according to the difficulty of the operation.

[0036] It receives a preset operation level signal, enabling the vibratory rammer to operate according to the preset operation level, and collects the real-time pressure value and real-time motor speed during the operation of the vibratory rammer.

[0037] Step 2: Convert the real-time motor speed into real-time vibration frequency, and then compare and analyze the real-time pressure value and real-time vibration frequency with the preset pressure value and preset vibration frequency in the preset work level. Based on the analysis results, control the adjustment or decrease of the work level to determine the selected work level.

[0038] Step 3: Based on the selected operation level, obtain the corresponding target system pressure and target system flow rate, convert the target system flow rate into the target vibration frequency, and then collect the real-time system pressure and real-time motor speed during the vibratory compaction operation. Convert the real-time motor speed into the real-time vibration frequency, and then convert the real-time vibration frequency into the real-time system flow rate.

[0039] Step four: Control the real-time speed of the motor based on the comparison between the target system flow rate and the real-time system flow rate, so that the error between the target vibration frequency and the real-time vibration frequency meets the design value; and control the real-time system pressure based on the comparison between the target system pressure and the real-time system pressure, so that the error between the target system pressure and the real-time system pressure meets the design value.

[0040] This invention categorizes vibratory compaction operation modes into different operation levels based on the difficulty of the operation, thereby improving the accuracy of the operation. It mainly includes a preset operation level process before the formal operation and a selected operation level process for the formal operation. The entire process is automatically controlled with a high degree of automation. During vibratory compaction operation, the operation mode can be selected automatically based on real-time feedback to ensure the compaction effect and improve the operation efficiency. Furthermore, the hydraulic system flow and pressure and engine power can be adjusted as needed to improve energy-saving effects.

[0041] Example 2

[0042] like Figure 1 As shown, this invention discloses an intelligent control system for a vibratory rammer, including an electric pump 1. The inlet of the electric pump 1 is connected to a hydraulic oil tank 2, and the outlet of the electric pump 1 is connected to port 1 of an electric directional valve 3. Port 2 of the electric directional valve 3 returns the oil to the hydraulic oil tank 2. Ports 3 and 4 of the electric directional valve 3 are connected to the outlet and inlet of the vibratory rammer motor 6, respectively. When the electric directional valve 3 is working, ports 1 and 4 are connected, and ports 2 and 3 are connected. The electric pump 1 draws oil from the hydraulic oil tank 2, passes through ports 1 and 4 of the electric directional valve 3 into the vibratory rammer motor 6, and then flows out through ports 3 and 2 of the electric directional valve 3 back to the hydraulic oil tank 2.

[0043] A speed sensor 7 is installed on the vibratory rammer motor 6. A pressure sensor 5 is installed on the pipeline between port 4 of the electric directional valve 3 and the oil inlet of the vibratory rammer motor 6, and is connected to one end of the electro-proportional relief valve 8. The other end of the electro-proportional relief valve 8 returns to the hydraulic oil tank 2. The speed sensor 7 and the pressure sensor 5 are electrically connected to the signal input terminal of the analysis and control module 9. The signal output terminal of the analysis and control module 9 is electrically connected to the control switches of the electric pump 1, the electric directional valve 3, and the electro-proportional relief valve 8. The pressure sensor 5 detects the hydraulic pressure of the vibratory rammer drive system in real time; the motor speed sensor 7 collects the speed signal of the vibratory rammer excitation block in real time. The analysis and control module 9 analyzes the received data and then controls the electric pump 1, the electric directional valve 3, and the electro-proportional relief valve 8. This invention, through the introduction of sensors and acquisition devices, realizes multiple information inputs and improves the level of intelligence.

[0044] In addition, the pipeline between the oil outlet of the vibratory tamper motor 6 and port 3 of the electric directional valve 3 is connected to one end of the first relief valve 4, and the other end of the first relief valve 4 returns to the hydraulic oil tank 2. The pipeline between the oil outlet of the electric pump 1 and port 1 of the electric directional valve 3 is connected to one end of the second relief valve 10, and the other end of the second relief valve 10 returns to the hydraulic oil tank 2.

[0045] This invention discloses an intelligent control method for vibratory tampers, which improves work efficiency by establishing a work model, refining the work mode, and comparing modes in real time.

[0046] Based on the soil information for the operation, mainly the soil particle size, density, and moisture content, the pre-set vibratory compaction operation mode is divided into 5 levels, from level 1 to level 5, with the difficulty of compaction increasing from low to high. Based on the numerical model established by the experimental data, the main parameters affecting the vibratory compaction operation effect are set for different levels: vibration frequency f and compaction force F.

[0047] The vibration frequency of the vibratory rammer is f = n / 60, where n is the rotational speed of the vibratory rammer motor, n = kQ / q, where Q is the system flow rate, q is the motor displacement, and k represents the reciprocal of the motor's volumetric efficiency. The value of Q is adjusted by the controller via the main pump to achieve the set target value Q. i In system control, the target value Q is... i Replaces the vibration frequency f.

[0048] The compaction force F is positively correlated with the working pressure P of the hydraulic system. Higher pressure results in greater output torque of the hydraulic motor, greater excitation force of the eccentric block rotation, greater compaction force, and better compaction effect. The working pressure P is adjusted by the controller via an electro-proportional valve to achieve the set target value Pi. In system control, the target value Pi is used to represent the compaction force F.

[0049] The intelligent control method for vibratory tamping provided by this invention divides the operation process into four stages in the vibratory tamping working mode: preset level - trial operation - steady-state operation - end operation.

[0050] Step 1, Preset Level Stage: When working in a new area for the first time, the driver can preset the operation level based on the current status of the work object (i.e., soil conditions), or let the system preset the level automatically. The system preset level is 3.

[0051] Step 2, Trial Operation: After setting the preset level, the initial stage is the trial operation phase, which generally should not exceed 1 minute. During this phase, the vibratory tamper operates according to the preset level, and the real-time pressure value P1 and real-time motor speed n1 are collected during the operation, and the real-time vibration frequency f1 value is calculated at this time;

[0052] (1) The real-time vibration frequency f1 value and the preset vibration frequency f i The difference is not significant (based on experience, such as a difference of less than 10%). |f i -f1 |=Δf≤y%f i When, if P i -P1=Δp≥x%P i (x is an empirical value, ranging from 10 to 20), then it is determined that the preset level is too high, and it will automatically decrease by 1 level; and the above process is repeated until the Δp difference is less than x%P. i Or up to level 1. Where Δf represents the frequency difference and Δp represents the pressure difference.

[0053] (2) Frequency f1 value and preset value f i The difference is not significant (based on experience, such as a difference of less than 10%). |f i -f1 |=Δf≤y%f i When, if P1-P i =Δp≥x%P i (x is an empirical value, ranging from 10 to 20), then it is determined that the preset level is too low, and it is automatically increased by 1 level; and the above process is repeated until the Δp difference is less than x%P. i Or up to the highest level.

[0054] (3) Frequency f1 value and preset value f i The difference is relatively large (based on experience, such as a difference greater than 10%), that is |f i -f1 |=Δf>y%f i If the default value is too low, the preset level will be automatically raised by 1 level; and the above process will be repeated until the difference in Δp is less than x%P. i Or up to the highest level.

[0055] (4) In all stages, if in the lowest level, i.e., level 1 mode, if P i -P1≥z%P i (The z-value is an empirical value, ranging from 30 to 40). If this is the case, it is determined to be in a dry-running state. At this time, a warning message should be issued to remind the driver that the vibratory tamper is in a dry-running state and needs to be adjusted.

[0056] Step 3, Steady-state operation phase:

[0057] (1) In the selected operation level, the analysis and control module will output the optimal control parameters, namely the target system pressure P. i Target system traffic Q i The analysis and control module uses the real-time motor speed n1 obtained by the motor speed sensor to calculate the real-time vibration frequency f1, and compares it with the target frequency f. i According to Q=k Q q*n,k Q To calculate the motor's volumetric efficiency, the real-time flow rate Q1 is determined. Based on the comparison between the real-time flow rate and the target flow rate, a current signal I1 is sent to the solenoid valve controlling the displacement of the electric pump. This controls the hydraulic pump's displacement, thereby controlling the hydraulic system's flow output, which in turn controls the real-time motor speed n1, i.e., the real-time vibration frequency f1 of the vibratory tamper. This ensures that the actual real-time vibration frequency f1 matches the target vibration frequency f1. i The error meets the design value.

[0058] Simultaneously, the analysis and control module receives information from the pressure sensor, compares the real-time pressure P1 with the target pressure P.i By controlling the signal I2 of the proportional electromagnetic relief valve, the hydraulic system pressure P1 is controlled until the difference between the real-time system pressure P1 and the target pressure Pi reaches the set value.

[0059] Vibratory rammer motor power input: P w =k w *P*Q,k w The value should be determined based on the selected mode and experience. By optimizing the matching of the hydraulic system, the engine's power output can be made closer to the optimal power output value, reducing power waste and thus achieving the goal of energy saving and efficiency improvement.

[0060] Furthermore, this invention presents the collected signal information and analysis results on a display screen, facilitating operator decision-making. The presented results include numerous information parameters such as compaction force curves, frequency curves, and amplitude curves.

[0061] (2) When the real-time vibration frequency f1 and the real-time pressure value P1 continue to change significantly, i.e. |f i -f1 |=Δf>y%f i Or | P i -P1|=Δp≥x%P i If the system detects a change in the operating conditions, it will alert the driver and automatically enter Phase 2, the trial operation phase, to readjust the operating mode.

[0062] Step 4, End of Operation: When the operation is completed, the driver manually exits the vibratory compactor working mode or manually ends the operation, which determines that the operation is over and the system returns to the initial state.

[0063] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0064] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0065] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0066] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A method for intelligent control of a vibratory rammer, characterized in that: Includes the following steps: The vibratory compactor operation mode is divided into different operation levels according to the difficulty of the operation; It receives a preset operation level signal, enables the vibratory rammer to operate according to the preset operation level, and collects the real-time pressure value and real-time motor speed during the operation of the vibratory rammer. The real-time motor speed is converted into the real-time vibration frequency. The real-time pressure value and the real-time vibration frequency are then compared and analyzed with the preset pressure value and the preset vibration frequency in the preset work level. Based on the analysis results, the work level is adjusted up or down to determine the selected work level. Based on the selected operation level, obtain the corresponding target system pressure and target system flow rate, convert the target system flow rate into the target vibration frequency, and then collect the real-time system pressure and real-time motor speed during the vibratory compaction operation. Convert the real-time motor speed into the real-time vibration frequency, and then convert the real-time vibration frequency into the real-time system flow rate. The motor's real-time speed is controlled based on a comparison between the target system flow rate and the real-time system flow rate to ensure that the error between the target vibration frequency and the real-time vibration frequency meets the design value. Similarly, the real-time system pressure is controlled based on a comparison between the target system pressure and the real-time system pressure to ensure that the error between the target system pressure and the real-time system pressure meets the design value. The step of comparing and analyzing the real-time pressure value and real-time vibration frequency with the preset pressure value and preset vibration frequency in the preset work level, and controlling the adjustment or demotion of the work level based on the analysis results, and determining the selected work level includes: If the real-time vibration frequency f1 value is different from the preset vibration frequency f i Satisfy | f i -f1 |=Δf≤y%f i And the real-time pressure value P1 is the same as the preset pressure value P i Satisfy P i -P1=Δp≥x%P i If the preset task level is deemed too high, it will automatically be downgraded by one level, and the above process will be repeated until the Δp difference is less than x%P. i Or the job level is reduced to the lowest level; If the real-time vibration frequency f1 value is different from the preset vibration frequency f i Satisfy | f i -f1 |=Δf≤y%f i And the real-time pressure value P1 is the same as the preset pressure value P i Satisfy P1-P i =Δp≥x%P i If the preset task level is deemed too low, it will be automatically raised by one level, and the above process will be repeated until the Δp difference is less than x%P. i Or, upgrade the work level to the highest level; If the real-time vibration frequency f1 value is different from the preset vibration frequency f i Satisfy | f i -f1 |=Δf>y%f i If the preset task level is too low, it will be automatically raised by one level, and the above process will be repeated until the difference in Δp is less than x%P. i Or, upgrade the work level to the highest level; Where Δf represents the frequency difference, Δp represents the pressure difference, and x and y are empirical values.

2. The intelligent control method for vibratory compactors according to claim 1, characterized in that: The classification of vibratory compaction operation modes into different operation levels according to the difficulty of operation includes: Based on the different particle size, density and moisture content of the soil, the vibratory compaction operation mode is divided into 5 levels from level 1 to level 5, with the difficulty of compaction increasing from low to high.

3. The intelligent control method for vibratory compactors according to claim 2, characterized in that: The preset operating level is selected by the driver based on soil conditions or automatically by the system.

4. The intelligent control method for vibratory compactors according to claim 1, characterized in that: The values ​​of x and y are both in the range of 10 to 20.

5. The intelligent control method for vibratory compactors according to claim 1, characterized in that: If the job level is the lowest, and P i -P1≥z%P i If the control system issues a warning message to remind the driver that the vibratory tamper is in an unloaded state, z is an empirical value with a range of 30 to 40.

6. The intelligent control method for vibratory compactors according to claim 1, characterized in that: After determining the selected work level, if the real-time vibration frequency f1 and the real-time pressure value P1 continuously exhibit significant changes, satisfying |f i -f1 |=Δf>y%f i Or | P i -P1|=Δp≥x%P i If this happens, it is determined that the working conditions have changed, and the process of re-determining and selecting the work level is initiated.

7. An intelligent control system for a vibratory rammer, characterized in that: The system includes an electric pump (1), whose inlet is connected to a hydraulic oil tank (2), whose outlet is connected to port 1 of an electric directional valve (3), whose port 2 returns the oil to the hydraulic oil tank (2), whose ports 3 and 4 are connected to the outlet and inlet of a vibratory rammer motor (6) respectively, and whose motor is equipped with a speed sensor (7). A pipeline is constructed between port 4 of the electric directional valve (3) and the inlet of the vibratory rammer motor (6). A pressure sensor (5) is provided and connected to one end of an electro-proportional relief valve (8), the other end of which flows back to the hydraulic oil tank (2). The speed sensor (7) and the pressure sensor (5) are electrically connected to the signal input terminal of the analysis and control module (9). The signal output terminal of the analysis and control module (9) is electrically connected to the control switches of the electric pump (1), the electric directional valve (3), and the electro-proportional relief valve (8). The analysis and control module (9) is configured to perform the method of any one of claims 1-6.

8. The intelligent control system for vibratory compactors according to claim 7, characterized in that: The pipeline between the oil outlet of the vibratory tamping motor (6) and port 3 of the electric reversing valve (3) is connected to one end of the first overflow valve (4), and the other end of the first overflow valve (4) flows back to the hydraulic oil tank (2).

9. The intelligent control system for vibratory compactors according to claim 7, characterized in that: The pipeline between the oil outlet of the electric pump (1) and port 1 of the electric reversing valve (3) is connected to one end of the second relief valve (10), and the other end of the second relief valve (10) flows back to the hydraulic oil tank (2).

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