Comprehensive electro-hydraulic control system experiment platform

Abstract

The invention provides a comprehensive electro-hydraulic control system experiment platform, the experiment platform comprises a test bench and test simulation software, and the experiment steps of the experiment platform on an agricultural machine electro-hydraulic control system comprise: based on a hydraulic control schematic diagram of a target agricultural machine, rapidly connecting a first target hydraulic module on the test bench; an electro-hydraulic control system corresponding to the hydraulic control schematic diagram is built; setting corresponding test parameters through a human-computer interaction interface of the test simulation software; controlling the operation of the electro-hydraulic control system based on the test parameters, and collecting preset operation parameters corresponding to the second target hydraulic module; and processing and generating a corresponding statistical curve graph based on the collected preset operation parameters, and displaying the statistical curve graph through a human-computer interaction interface of the test simulation software.

Description

Technical Field

[0001] The present application relates to the field of hydraulic control technology, and in particular to an integrated electro-hydraulic control system experimental platform. Background Art

[0002] Currently, the electro-hydraulic control systems of agricultural machinery are basically first simulated offline based on schematic drawings, and then debugged online after the prototype is produced. Due to the discrepancy between simulation data and actual operation data, the actual debugging time is often too long, seriously affecting the development progress of new models. Summary of the Invention

[0003] The purpose of the embodiments of the present application is to provide a comprehensive electro-hydraulic control system experimental platform to solve the technical problems of long debugging cycle and low efficiency of existing agricultural machinery electro-hydraulic control systems.

[0004] In a first aspect, the present invention provides a comprehensive electro-hydraulic control system experimental platform, which includes a test bench and test simulation software. The experimental steps of the agricultural machinery electro-hydraulic control system through the experimental platform include:

[0005] Based on the hydraulic control schematic diagram of the target agricultural machinery, the first target hydraulic module on the test bench is quickly connected to build an electro-hydraulic control system corresponding to the hydraulic control schematic diagram;

[0006] Set the corresponding test parameters through the human-computer interaction interface of the test simulation software;

[0007] Controlling the operation of the electro-hydraulic control system based on the test parameters and collecting preset operating parameters corresponding to the second target hydraulic module;

[0008] Based on the collected preset operating parameters, the corresponding statistical curve graph is generated and displayed through the human-computer interaction interface of the test simulation software.

[0009] In an optional embodiment, the test bench includes at least a power module, an execution module, a control module, an auxiliary module and a pipeline module. The power module includes at least a hydraulic pump; the execution module includes at least a hydraulic cylinder and a hydraulic motor; the control module includes at least a hydraulic valve; the auxiliary module includes at least an oil tank and an oil filter.

[0010] Among them, the power module, execution module, control module, auxiliary module and pipeline module are arranged in the test bench, and the power module, execution module, control module and auxiliary module are electrically connected through a quick installation interface formed on the surface of the test bench;

[0011] The hydraulic medium circulation channel is realized between the power module, the execution module, the control module and the auxiliary module through the pipeline module.

[0012] In an optional embodiment, the test bench further includes sensor units, which are arranged at preset points of each power module, execution module, control module, auxiliary module and pipeline module.

[0013] In an optional embodiment, the test bench is further provided with a wiring structure for accommodating connecting wires.

[0014] In an optional embodiment, a control is provided on the test bench for controlling the series and parallel relationship between the execution modules.

[0015] In an optional embodiment, the test bench further includes an electrical module, which is used to connect to form a vehicle electrical control system.

[0016] In an optional embodiment, corresponding preset operating parameters are collected through a sensor element configured by the second target hydraulic module.

[0017] In an optional embodiment, the human-computer interaction interface includes a test configuration interface, a first area of the test configuration interface is provided with a parameter setting control, the parameter setting control is an edit box, and the test simulation software determines a target parameter setting value based on the user's input operation on the edit box, so as to determine the control current value of the control module according to the target parameter setting value;

[0018] The parameter setting control may further include an adjustment button. The test simulation software adjusts the target parameter numerically in response to the user's click operation on the adjustment button, so as to determine the control current value of the control module according to the adjusted target parameter setting value.

[0019] In an optional embodiment, the parameter setting control also includes a scale layer and a pointer slider. The test simulation software determines the target parameter setting value based on the relative position of the pointer slider in the scale layer in response to the user's sliding operation on the pointer slider, so as to determine the control current value of the control module according to the target parameter setting value.

[0020] In an optional embodiment, the human-computer exchange interface further includes a curve display interface, wherein a first area of the curve display interface is provided with a list of curves to be selected, the curve selection list includes a plurality of acquisition and operation parameter entries, a second area of the curve display interface is provided with a list of selected curves, and a third area of the curve display interface is provided with a statistical graph of the acquisition and operation parameters;

[0021] The test simulation software displays the target acquisition and operation parameter entry and the corresponding check box in the selected curve list in response to the user's click operation on the target acquisition and operation parameter entry in the to-be-selected curve list, and displays the statistical curve of the target acquisition and operation parameter in the acquisition and operation parameter statistical chart based on the selection operation of the check box of the target acquisition and operation parameter entry.

[0022] The present application provides an integrated electro-hydraulic control system experimental platform, which includes a test bench and test simulation software. The experimental steps for the electro-hydraulic control system of agricultural machinery on the experimental platform include: based on the hydraulic control schematic diagram of the target agricultural machinery, quickly connecting the first target hydraulic module on the test bench to build an electro-hydraulic control system corresponding to the hydraulic control schematic diagram; setting corresponding test parameters through the human-computer interaction interface of the test simulation software; controlling the operation of the electro-hydraulic control system based on the test parameters, and collecting preset operating parameters corresponding to the second target hydraulic module; based on the collected preset operating parameters, processing and generating corresponding statistical curves and displaying them through the human-computer interaction interface of the test simulation software. The integrated electro-hydraulic control system experimental platform provided by the present application uses the test bench to build an experimental environment for the physical electro-hydraulic control system, combines simulation technology to obtain test results, and is quick to build an electro-hydraulic control system with a wide range of versatility. Compared with the test method of offline simulation first and then physical debugging in the prior art, it can save debugging time and thus improve R&D efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 A schematic structural diagram of an integrated electro-hydraulic control system experimental platform provided in an embodiment of the present application;

[0025] FIG2( a ) is a schematic diagram of a power module structure according to an embodiment of the present application;

[0026] FIG2( b ) is a schematic diagram of another power module structure provided in an embodiment of the present application;

[0027] Figure 3 A flowchart of the experimental steps of an electro-hydraulic control system provided in an embodiment of the present application;

[0028] Figure 4 A schematic diagram of a parameter setting control in a test configuration interface provided in an embodiment of the present application;

[0029] Figure 5 A schematic diagram of another parameter setting control in the test configuration interface provided in an embodiment of the present application. DETAILED DESCRIPTION

[0030] First, the application scenarios of the technical solution of this application are explained. This application provides a comprehensive electro-hydraulic control system experimental platform, which allows users to quickly build different electro-hydraulic control systems based on hydraulic schematics and realize real machine simulation. It can be suitable for various scenarios such as design verification, performance testing, and teaching demonstration of the electro-hydraulic control system of the whole vehicle.

[0031] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0032] Example 1

[0033] Figure 1 A schematic structural diagram of an integrated electro-hydraulic control system experimental platform provided in an embodiment of the present application, wherein the experimental platform includes a test bench and test simulation software.

[0034] Specifically, the test bench is used to build a modular electro-hydraulic control system, where the electro-hydraulic control system can be a hydraulic electro-hydraulic control system, an electro-hydraulic electro-hydraulic control system, and the like.

[0035] In one embodiment, the test bench includes at least a power module, an execution module, a control module, an auxiliary module, a pipeline module, an electrical module, and a sensor unit.

[0036] The power module includes at least a hydraulic pump and a motor, while the execution module includes at least a hydraulic cylinder and a hydraulic motor, providing power to the servo control unit. The auxiliary module includes at least an oil tank, an oil filter, and an accumulator. The motor drives the hydraulic pump to draw hydraulic fluid (hydraulic oil) from the tank and pressurize it for output, providing power to the electro-hydraulic control system. The number of hydraulic pumps can be multiple, with a maximum power system consisting of 12 plunger pumps and 6 double pumps (six double pumps are equivalent to 12 gear pumps), providing a maximum rated power of 150 kW for the electro-hydraulic control system. A dual-motor solution is employed, with one motor rated at 90 kW and the other at 60 kW. As shown in Figures 2(a) and 2(b), each motor is connected to the transfer case and has multiple power output terminals of varying sizes, allowing users to select the appropriate power output based on the system's power requirements.

[0037] The control module at least includes a hydraulic valve, which may be a relief valve, a reversing valve, a throttle valve, etc.

[0038] The electrical module is used to connect and form the vehicle's electrical control system. It can include components such as lighting, wiring harnesses, media, human-machine interface (HMI), air conditioning, and windshield wipers. The electrical module can be connected to the output of the electro-hydraulic control system via a jumper board and wiring harness.

[0039] Among them, the power module, execution module, control module, auxiliary module and pipeline module are arranged in the test bench, and the power module, execution module, control module and auxiliary module can be electrically connected through a quick installation interface formed on the surface of the test bench.

[0040] The hydraulic medium circulation channel is realized between the power module, the execution module, the control module and the auxiliary module through the pipeline module.

[0041] Specifically, the test bench utilizes a high-strength frame structure, providing a stable mounting platform for other components. Standardized mounting interfaces facilitate the installation and connection of modules. In one embodiment, quick-connect connectors compliant with ISO 7241-2 are used to connect the modules, while multi-pluggable electrical connectors serve as the electrical connections between the modules.

[0042] Through the standardized and modular design structure of each component and the formation of a quick connection interface, the functions and working states of various electro-hydraulic control systems can be simulated through different combinations and connection methods.

[0043] The piping module uses quick-connect connectors and high-strength, pressure-resistant piping that complies with ISO7241-2 standards, enabling quick connection and removal of the circulation channel, significantly reducing the time required to set up the hydraulic system. Furthermore, the piping has excellent sealing properties, ensuring that the hydraulic medium will not leak during operation.

[0044] The test bench is also provided with a wiring structure for accommodating the connecting wires. The wiring structure can be specifically a wiring channel, which can make the connecting wires neater.

[0045] The test bench also features controls for controlling the series and parallel connections between the modules. These controls can be physical controls such as keys and buttons, and are used to control the series and parallel connections between modules, as well as control valve opening and closing, power supply control, and more.

[0046] For example, by selecting different types of cylinders and motors in the constructed electro-hydraulic control system and adding multiple sets of electromagnetic switch valves, the series and parallel connection of hydraulic cylinders / hydraulic motors can be achieved.

[0047] For example, the oil inlet pipe can be formed into multiple branches and connected in parallel or series with different hydraulic motors. By switching the corresponding solenoid valves on the pipes, the parts to be installed in the system can be selected as needed. Similarly, by switching the solenoid valves, hydraulic cylinders can be connected in series or parallel.

[0048] This application provides a test bench that allows users to freely select and combine modules based on electro-hydraulic control system drawings, quickly building a variety of electro-hydraulic control systems to meet diverse testing needs. Compared with traditional fixed-structure test benches, this reduces equipment procurement costs and floor space. Furthermore, through the combination of modular design and quick-connect interfaces, user setup is simpler, significantly reducing setup time and improving testing efficiency.

[0049] Example 2

[0050] The present application provides an integrated electro-hydraulic control system experimental platform, in which the test bench also includes sensor units, which are arranged at preset points of each power module, execution module, control module, auxiliary module and pipeline module.

[0051] For example, the sensor unit can be a pressure sensor, flow sensor, temperature sensor, or the like. The sensor unit can be placed at pipeline inlets and outlets, for example, to monitor system parameters such as pressure, flow, temperature, and displacement in real time. The sensor transmits the collected data to the test simulation software for analysis and processing.

[0052] Figure 3 This is a flow chart of the experimental steps of an electro-hydraulic control system provided in an embodiment of the present application. Figure 3 As shown, in this embodiment, the experimental steps of the agricultural machinery electro-hydraulic control system through the experimental platform may include:

[0053] S300: Based on the hydraulic control schematic diagram of the target agricultural machinery, quickly connect the first target hydraulic module on the test bench to build an electro-hydraulic control system corresponding to the hydraulic control schematic diagram.

[0054] Users can draw schematic diagrams using third-party software and upload them to the test simulation software. They can also adjust the various modules of the electro-hydraulic control system through the test simulation software and physical controls to quickly complete the construction of the designed electro-hydraulic control system.

[0055] S310. Set corresponding test parameters through the human-computer interaction interface of the test simulation software.

[0056] Users can set test parameters such as the power module's output pressure and flow rate, as well as the hydraulic valve's operating mode, to ensure the electro-hydraulic control system operates according to the intended operating conditions. After the settings are complete, pre-energize the system and verify the accuracy of the acquisition parameters at the preset points through the human-computer interface.

[0057] like Figure 4As shown, the human-computer interaction interface includes a test configuration interface. The first area of the test configuration interface is provided with a parameter setting control, which is an edit box. The test simulation software determines the target parameter setting value based on the user's input operation on the edit box, so as to determine the control current value of the control module according to the target parameter setting value.

[0058] The parameter setting control may further include an adjustment button. The test simulation software adjusts the target parameter numerically in response to the user's click operation on the adjustment button, so as to determine the control current value of the control module according to the adjusted target parameter setting value.

[0059] In one embodiment, the user can enter the target parameter setting value in the edit box, for example, the setting value of a given proportional throttle valve can be set to 80, and can also be adjusted through the adjustment button. Each time the adjustment button is clicked, the setting value of the proportional throttle valve can be increased or decreased by 1.

[0060] like Figure 5 As shown, the parameter setting control also includes a scale layer and a pointer slider. The test simulation software determines the target parameter setting value based on the relative position of the pointer slider in the scale layer in response to the user's sliding operation on the pointer slider. Based on the target parameter setting value, the control current value of the control module is determined. The scale layer displays a scale ruler.

[0061] In another embodiment, the user may also set the target parameter setting value by dragging a pointer slider.

[0062] The parameter setting controls here can be used to set acceleration, deceleration, speed increase, voltage and current values, proportional throttle valve opening value, main pump displacement value, main pump loading value, and can also be used to set main power start, reset, motor start, etc.

[0063] The second area of the test configuration interface displays the schematic diagram of the electro-hydraulic control system. The schematic also displays valve controls. These controls can be used to control the opening and closing states of corresponding valves, thereby changing the connections between modules in the constructed electro-hydraulic control system or the series and parallel connections of the hydraulic medium circulation branches.

[0064] The principle diagram can also display the parameter values collected in real time by each sensor unit.

[0065] The fourth area of the test configuration interface displays alarm information, which can detect and issue warnings based on the collected parameters.

[0066] S320: Control the operation of the electro-hydraulic control system based on the test parameters, and collect preset operating parameters corresponding to the second target hydraulic module.

[0067] S330: Based on the collected preset operating parameters, corresponding statistical curves are generated and displayed through the human-computer interaction interface of the test simulation software.

[0068] The human-computer exchange interface also includes a curve display interface. The first area of the curve display interface is provided with a list of curves to be selected. The curve selection list includes multiple acquisition and operation parameter entries. The second area of the curve display interface is provided with a list of selected curves. The third area of the curve display interface is provided with a statistical chart of acquisition and operation parameters.

[0069] The test simulation software displays the target acquisition and operation parameter entry and the corresponding check box in the selected curve list in response to the user's click operation on the target acquisition and operation parameter entry in the to-be-selected curve list, and displays the statistical curve of the target acquisition and operation parameter in the acquisition and operation parameter statistical chart based on the selection operation of the check box of the target acquisition and operation parameter entry.

[0070] Here, the collected operating parameters may include return oil flow value, leakage flow value, oil tank temperature value, main pump pressure value, electric valve opening value, resistance feedback value, preset point current value / voltage value, preset point pressure value, preset point power value, etc.

[0071] The user can select the desired operating parameter entries and display them using different colored lines. In addition, the user can use the checkbox to select whether to display the curve corresponding to the target acquisition operating parameter.

[0072] The curve display interface also includes controls for starting and stopping data acquisition, as well as an experiment information edit box and a report edit box. The experiment information edit box allows you to enter information such as the product model, experiment number, test item, recording cycle, and recording duration. The report edit box allows you to generate an experiment report and output it as an electronic or physical file.

[0073] Based on the data collected and analyzed by the software, the performance of the electro-hydraulic control system is evaluated to determine whether it meets the design requirements. If the test plan needs to be adjusted, adjustments can be made based on the report.

[0074] In a specific embodiment, using the hydraulic and electro-hydraulic control system of agricultural machinery as an example, the test platform of this application can be used to conduct full-system offline testing. After the hydraulic system is tested, the designed and manufactured vehicle wiring harness drawings are mounted on the test bench system. Sensors, solenoid valves, and other equipment used in the vehicle are then connected to the wiring harness through the test bench's electrical jumper system. The vehicle is then tested in actual operation. After commissioning, the vehicle control program is finalized and entered into mass production.

[0075] An embodiment of the present application provides a comprehensive electro-hydraulic control system experimental platform, which uses a test bench to build an experimental environment for a physical electro-hydraulic control system, and combines simulation technology to obtain test results. The electro-hydraulic control system is quick to build and has a wide range of versatility. Compared with the testing method of first online simulation and then physical debugging in the existing technology, it can save debugging time and thus improve R&D efficiency.

[0076] The embodiment of the present application provides an integrated electro-hydraulic control system experimental platform, which is not only suitable for the research and development testing of hydraulic systems, but can also be used for teaching demonstrations to help students better understand the working principles and performance characteristics of hydraulic systems.

[0077] In the embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some communication interface, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0078] In addition, the units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0079] Furthermore, the functional modules in each embodiment of the present application can be integrated together to form an independent part, or each module can exist independently, or two or more modules can be integrated to form an independent part.

[0080] It should be noted that if the function is implemented in the form of a software function module and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0081] In this document, relational terms such as first and second, etc. are used merely to distinguish one entity or operation from another entity or operation, but do not necessarily require or imply any actual relationship or order between these entities or operations.

[0082] The above description is merely an embodiment of the present application and is not intended to limit the scope of protection of the present application. For those skilled in the art, various modifications and variations of the present application are possible. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A comprehensive electro-hydraulic control system experimental platform, characterized in that: The experimental platform includes a test bench and test simulation software. The experimental steps of the electro-hydraulic control system through the experimental platform include: Based on the hydraulic control schematic diagram of the target agricultural machinery, the first target hydraulic module on the test bench is quickly connected to build an electro-hydraulic control system corresponding to the hydraulic control schematic diagram; Set the corresponding test parameters through the human-computer interaction interface of the test simulation software; controlling the operation of the electro-hydraulic control system based on the test parameters, and collecting preset operating parameters corresponding to the second target hydraulic module; Based on the collected preset operating parameters, the corresponding statistical curve graph is generated and displayed through the human-computer interaction interface of the test simulation software.

2. The platform according to claim 1, characterized in that The test bench at least includes a power module, an execution module, a control module, an auxiliary module and a pipeline module. The power module at least includes a hydraulic pump; the execution module at least includes a hydraulic cylinder and a hydraulic motor; the control module at least includes a hydraulic valve; the auxiliary module at least includes an oil tank and an oil filter. Among them, the power module, execution module, control module, auxiliary module and pipeline module are arranged in the test bench, and the power module, execution module, control module and auxiliary module are electrically connected through a quick installation interface formed on the surface of the test bench; The hydraulic medium circulation channel is realized between the power module, the execution module, the control module and the auxiliary module through the pipeline module.

3. The platform according to claim 2, characterized in that The test bench also includes sensor units, which are arranged at preset points of each power module, execution module, control module, auxiliary module and pipeline module.

4. The platform according to claim 2, characterized in that The test bench is also provided with a wiring structure for accommodating connecting wires.

5. The platform according to claim 2, characterized in that The test bench is provided with a control for controlling the series and parallel relationship between the execution modules.

6. The platform according to claim 1, characterized in that The test bench further includes an electrical module, which is used to connect to form a vehicle electrical control system.

7. The platform according to claim 3, characterized in that The corresponding preset operating parameters are collected through the sensor element configured by the second target hydraulic module.

8. The platform according to claim 1, characterized in that The human-computer interaction interface includes a test configuration interface, wherein a parameter setting control is provided in a first area of the test configuration interface. The parameter setting control is an edit box. The test simulation software determines a target parameter setting value based on a user's input operation on the edit box, and determines a control current value of the control module according to the target parameter setting value. The parameter setting control may further include an adjustment button. The test simulation software adjusts the target parameter numerically in response to the user's click operation on the adjustment button, so as to determine the control current value of the control module according to the adjusted target parameter setting value.

9. The platform according to claim 8, characterized in that The parameter setting control also includes a scale layer and a pointer slider. The test simulation software determines the target parameter setting value based on the relative position of the pointer slider in the scale layer in response to the user's sliding operation on the pointer slider, so as to determine the control current value of the control module according to the target parameter setting value.

10. The platform according to claim 1, characterized in that The human-computer exchange interface also includes a curve display interface. The first area of the curve display interface is provided with a list of curves to be selected, the curve selection list includes multiple acquisition and operation parameter entries, the second area of the curve display interface is provided with a list of selected curves, and the third area of the curve display interface is provided with a statistical graph of the acquisition and operation parameters; The test simulation software displays the target acquisition and operation parameter entry and the corresponding check box in the selected curve list in response to the user's click operation on the target acquisition and operation parameter entry in the to-be-selected curve list, and displays the statistical curve of the target acquisition and operation parameter in the acquisition and operation parameter statistical chart based on the selection operation of the check box of the target acquisition and operation parameter entry.

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