Roller dynamic control assembly system and roller control method

Abstract

This invention proposes a road roller motor control assembly system and a road roller control method. The road roller motor control assembly system includes an electronic control unit (ECU), and further includes one or more of an engine control system, a travel control system, and a vibration control system. The engine control system, travel control system, and vibration control system are all connected to the ECU. The ECU is used to regulate the engine control system, travel control system, and vibration control system, thereby achieving engine status management, travel / parking status management, and vibration status management. The engine control unit, located on the road roller's engine, is responsible for engine status, start / stop, and throttle control functions, thus eliminating the need for a dedicated road roller controller. Engine control, travel function control, and vibration function control are all integrated into the ECU, saving road roller layout space, reducing the use of connectors and wires, and improving reliability.

Description

Technical Field

[0001] This invention relates to the field of road rollers, and more specifically, to a road roller motor control assembly system and a road roller control method. Background Technology

[0002] A road roller is a type of road equipment that primarily uses its own weight to compact soil, roadbed, or asphalt pavement, making it smooth and dense. Existing road rollers have been upgraded from mechanical transmission control to hydraulic and electrical control. With the increasing complexity of hydraulic and electrical control, how to control the road roller's walking and vibration functions has become a challenging problem of concern to those skilled in the art. Summary of the Invention

[0003] The purpose of this invention is to provide a road roller motor control assembly system and a road roller control method to improve the above-mentioned problems.

[0004] To achieve the above objectives, the technical solutions adopted in the embodiments of the present invention are as follows: In a first aspect, embodiments of the present invention provide a road roller motor control assembly system, the road roller motor control assembly system including an electronic control unit, and the road roller motor control assembly system further including any one or more of an engine control system, a travel control system, and a vibration control system; The engine control system, the walking control system, and the vibration control system are all connected to the electronic control unit; The electronic control unit is used to regulate the engine control system, thereby realizing engine status management; The electronic control unit is used to regulate the walking control system, thereby realizing the management of the driving and parking status; The electronic control unit is used to regulate the vibration control system, thereby achieving vibration state management.

[0005] Secondly, embodiments of the present invention provide a roller control method applied to the aforementioned electrical control unit, the method comprising: The engine control system is adjusted to achieve engine status management; The driving control system is adjusted to achieve driving and parking status management; The vibration control system is adjusted to achieve vibration status management.

[0006] Compared to existing technologies, the present invention provides a road roller motor control assembly system and a road roller control method. The road roller motor control assembly system includes an electronic control unit (ECU), and further includes one or more of an engine control system, a travel control system, and a vibration control system. The engine control system, travel control system, and vibration control system are all connected to the ECU. The ECU is used to regulate the engine control system, travel control system, and vibration control system, thereby achieving engine status management, travel / parking status management, and vibration status management. The engine control unit, located on the road roller's engine, is responsible for engine status, start / stop, and throttle control functions, thus eliminating the need for a dedicated road roller controller. Engine control, travel function control, and vibration function control are all integrated into the ECU, saving road roller layout space, reducing the use of connectors and wires, and improving reliability.

[0007] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0008] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0009] Figure 1 This is a schematic diagram of the engine control system connected to the electronic control unit according to an embodiment of the invention.

[0010] Figure 2 This is a schematic diagram of the walking control system connected to the electronic control unit according to an embodiment of the invention.

[0011] Figure 3 This is a schematic diagram of the vibration control system connected to the electronic control unit according to an embodiment of the invention. Detailed Implementation

[0012] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0013] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0014] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this invention, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0015] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0016] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0017] Road roller: A road roller is a heavy-duty engineering vehicle, belonging to road equipment, mainly used for compacting earthwork and asphalt during road construction. It mainly uses its own weight to compact soil, roadbed, or asphalt pavement, making it flat and dense.

[0018] The engine's electronic control unit (ECU) is a sophisticated electronic control device that is primarily responsible for analyzing the engine's operating status in real time and precisely controlling the operation of various actuators to improve power, reduce fuel consumption, and decrease pollution.

[0019] Controller: A controller is an indispensable component of an automation system. It receives input signals from sensors or other devices and generates corresponding output signals based on preset control strategies and algorithms, thereby achieving precise control of the controlled object. With technological advancements, the intelligence and networking of controllers will become important trends in future development.

[0020] Button: A button is a commonly used electrical control component, often used to connect or disconnect a control circuit (where the current is very small), thereby controlling the operation of a motor or other electrical equipment.

[0021] Electric control handle: An electric control handle is a human-machine interface input device. It senses the angle or force of the operator's pushing, pulling, or twisting movements via a joystick, converting this into electrical signals to precisely control the direction and speed of the machine's movement. The electric control handle mentioned in this embodiment of the invention is used to control the forward and backward speed of a road roller, and the output signal can be a bus output or an analog output.

[0022] Speed ​​control knob: A speed control knob is an electronic input device used to adjust the motor speed or equipment operating speed. It changes the output electrical signal by rotating the knob, thereby achieving stepless speed adjustment. The speed control knob mentioned in this embodiment of the invention is used to set the maximum travel speed of the road roller according to the working conditions.

[0023] Solenoid valve: A solenoid valve is a device that uses electromagnetic principles to control the flow of fluids, mainly used to control the direction and flow rate of liquids, gases, and other fluids. The solenoid valve mentioned in this article refers to a hydraulic component that controls the flow of hydraulic oil to move mechanical parts.

[0024] This invention provides a road roller motor control assembly system, which includes an Electronic Control Unit (ECU). The road roller motor control assembly system also includes one or more of an engine control system, a travel control system, and a vibration control system; the engine control system, the travel control system, and the vibration control system are all connected to the ECU.

[0025] The electronic control unit is used to regulate the engine control system, thereby realizing engine status management; The electronic control unit is used to regulate the walking control system, thereby realizing the management of the driving and parking status; The electronic control unit is used to regulate the vibration control system, thereby achieving vibration status management.

[0026] In the road roller motor control assembly system provided in this embodiment of the invention, the engine control unit (ECU) of the road roller, equipped with an engine mounted on the engine, is responsible for engine status, start / stop, and throttle control. Through in-depth development of the ECU's functions, it is entirely possible to control the road roller's travel and vibration functions. This eliminates the need for a separate road roller controller, integrating engine control, travel function control, and vibration function control all into the ECU. This saves space on the road roller, reduces the use of connectors and wiring, and improves reliability. The absence of a separate road roller controller for travel and vibration control avoids occupying space on the road roller and reduces its cost.

[0027] Please refer to Figure 1 , Figure 1 This is a schematic diagram of an engine control system connected to an electronic control unit (ECU) according to an embodiment of the invention. The engine control system includes: a ignition key switch, an emergency stop switch, a starter motor, and a throttle injector.

[0028] When the ignition key switch (which can be switched by the driver or operator of the road roller) is switched to the ON position, the electronic control unit is powered on and enters the working state.

[0029] When the electronic control unit is in operation, it controls the starter motor to start the engine when it detects the start signal generated when the start key switch is switched to the START position. At the same time, it controls the corresponding throttle injectors of the engine to inject fuel to ensure the normal operation of the engine.

[0030] When the ignition key switch is switched to the OFF position, or the emergency stop switch is triggered, the electronic control unit loses power (at this time, the throttle injectors cannot be controlled to inject fuel), and the engine stops working.

[0031] Please continue to refer to this. Figure 1 The engine control system also includes: a three-speed throttle switch and a speed sensor; When the electronic control unit is in operation, it monitors the current throttle position of the three-speed throttle switch and controls the amount of fuel injected by the throttle injector per unit time based on the current throttle position. The electronic control unit is also used to acquire the current engine speed monitored by the speed sensor, and to perform closed-loop control adjustment of the fuel injection quantity per unit time based on the current engine speed and the current throttle gear, so as to match the engine speed with the current throttle gear.

[0032] Optionally, the three-speed throttle switch has three positions: I / II / III, with position I being the default. In position I, the engine is idling. When the three-speed throttle switch is moved to position II, the engine ECU receives the signal and adjusts the fuel injection quantity per unit time by the throttle injectors, thereby regulating the engine speed to maintain it at the economy mode speed. The engine speed can be measured by a speed sensor and transmitted to the engine ECU for closed-loop control, stabilizing the engine speed at the set economy speed value. When the three-speed throttle switch is moved to position III, the engine ECU receives the signal and further increases the fuel injection quantity by the throttle injectors, thereby regulating the engine speed to reach the maximum speed. The speed is then measured by the speed sensor for closed-loop control, stabilizing the engine speed at the set maximum speed value.

[0033] like Figure 1 As shown, one end of the ignition key switch, one end of the speed sensor, one end of the three-position throttle switch, one end of the starter motor, and the power supply terminal of the electronic control unit are all connected to the power source. The other end of the ignition key switch is connected to one end of the emergency stop switch. The other ends of the emergency stop switch, the speed sensor, and the three-position throttle switch are all connected to the electronic control unit. The second end of the starter motor and one end of the throttle injector are connected to the electronic control unit. The third end of the starter motor, the other end of the throttle injector, and the ground terminal of the electronic control unit are all grounded.

[0034] Please refer to Figure 2 , Figure 2 This is a schematic diagram of the walking control system connected to the electronic control unit according to an embodiment of the invention. The walking control system includes: a parking brake switch and a parking brake solenoid valve.

[0035] When the electronic control unit is in operation, it controls the parking brake solenoid valve to open when it detects the parking brake open signal corresponding to the parking brake switch, so as to open the brake and put the road roller into the waiting driving state.

[0036] The road roller enters the waiting-to-drive state. After the vehicle stops, the parking brake switch must be turned off.

[0037] When the electronic control unit is in operation, it controls the parking brake solenoid valve to de-energize when it detects the parking brake closing signal corresponding to the parking brake switch, so as to control the brake to close and put the road roller into the parking state.

[0038] Please continue to refer to this. Figure 2 The walking control system also includes: electric control handle, speed control knob, pump forward solenoid valve, and vehicle speed sensor; When the road roller is in a waiting state, the electronic control unit monitors the current rotation range of the speed control knob and determines the first set speed based on the current rotation range.

[0039] Optionally, the speed control knob can be rotated at different angles by the driver, with different voltage signal magnitudes corresponding to different rotation angles. Optionally, the larger the rotation angle of the speed control knob, the higher the corresponding first set vehicle speed value matched by the engine ECU.

[0040] The electronic control unit is used to increase the current of the pump forward solenoid valve based on the opening value signal of the electronic control handle (corresponding to the angle value of the electronic control handle being pushed out) when it detects that the electronic control handle is pushed forward, thereby causing the road roller to move forward.

[0041] The electronic control unit is also used to acquire the current forward speed monitored by the vehicle speed sensor, and to perform closed-loop control of the current of the pump forward solenoid valve based on the current forward speed and the target forward speed. The target forward speed is the speed determined based on the first set vehicle speed and the bus message opening value signal.

[0042] Please continue to refer to this. Figure 2 The walking control system also includes: a pump retraction solenoid valve; When the road roller is in a waiting state, the electronic control unit monitors the current rotation range of the speed control knob and determines the first set speed based on the current rotation range. The electronic control unit is used to increase the current of the pump retraction solenoid valve when it detects that the electronic control handle is pushed backward, based on the opening value signal of the electronic control handle's bus message (corresponding to the angle value of the electronic control handle being pushed out), thereby causing the road roller to move backward.

[0043] The electronic control unit is also used to acquire the current reverse speed monitored by the vehicle speed sensor, and to perform closed-loop control of the current of the solenoid valves before and after the pump based on the current reverse speed and the target reverse speed. The target reverse speed is the speed determined based on the first set vehicle speed and the bus message opening value signal.

[0044] Please continue to refer to this. Figure 2 The walking control system also includes: tortoise and hare switch and walking motor solenoid valve; When the electronic control unit is in operation, it controls the solenoid valve of the travel motor to de-energize when the tortoise-hare switch is in the tortoise position, so that the travel gear is in first gear speed; and controls the solenoid valve of the travel motor to energize when the tortoise-hare switch is in the rabbit position, so that the travel gear is in second gear speed.

[0045] like Figure 2As shown, the first end of the electronic control handle, the first end of the vehicle speed sensor, one end of the speed control knob, one end of the tortoise and hare switch, and one end of the parking brake switch are connected to the power supply. The second and third ends of the electronic control handle, the other end of the vehicle speed sensor, the other end of the speed control knob, the other end of the tortoise and hare switch, the other end of the parking brake switch, one end of the pump forward solenoid valve, one end of the pump reverse solenoid valve, one end of the travel motor solenoid valve, and one end of the parking brake solenoid valve are all connected to the electronic control unit. The other ends of the pump forward solenoid valve, the other end of the pump reverse solenoid valve, the other end of the travel motor solenoid valve, and the other end of the parking brake solenoid valve are all connected to ground.

[0046] Please refer to Figure 3 , Figure 3 This is a schematic diagram of the vibration control system connected to the electronic control unit according to an embodiment of the invention. The vibration control system includes: a start / stop button, a primary vibration pump solenoid valve, and a vibration frequency sensor; When the road roller is in normal operation, the electronic control unit is used to control the primary vibration pump solenoid valve to be energized when it receives the trigger signal of the start / stop vibration button, so that the road roller enters the primary vibration state. When the road roller enters the primary vibration state, the electronic control unit acquires the current vibration frequency of the road roller transmitted by the vibration frequency sensor, and performs closed-loop control adjustment on the current value of the primary vibration pump solenoid valve according to the current vibration frequency and the primary set vibration frequency corresponding to the primary vibration state, so as to ensure that the deviation between the current vibration frequency and the primary set vibration frequency is within the preset deviation range, thus ensuring the stability of vibration.

[0047] The electronic control unit is used to de-energize the primary vibration pump solenoid valve when it receives the off signal from the start / stop vibration button, so as to stop the road roller from vibrating.

[0048] Please continue to refer to this. Figure 3 The vibration control system also includes: a large and small vibration switching button and a secondary vibration pump solenoid valve; When the road roller enters the primary vibration state, the electronic control unit controls the primary vibration pump solenoid valve to de-energize after detecting that the large and small vibration switching button has been triggered. After a preset time (the preset time can be, but is not limited to, 3 seconds, to reduce the impact of vibration switching), the secondary vibration pump solenoid valve is energized so that the road roller enters the secondary vibration state, where the vibration frequency is higher than that of the primary vibration state.

[0049] When the road roller enters the secondary vibration state, the electronic control unit acquires the current vibration frequency of the road roller transmitted by the vibration frequency sensor, and performs closed-loop control adjustment of the current value of the secondary vibration pump solenoid valve according to the current vibration frequency and the secondary set vibration frequency corresponding to the secondary vibration state, so as to ensure that the deviation between the current vibration frequency and the secondary set vibration frequency is within the preset deviation range, thus ensuring the stability of the vibration.

[0050] When the road roller enters the secondary vibration state, the electronic control unit controls the secondary vibration pump solenoid valve to de-energize after detecting that the large and small vibration switching button has been triggered, and controls the primary vibration pump solenoid valve to energize after a preset time, so that the road roller enters the primary vibration state.

[0051] like Figure 3 As shown, one end of the start / stop vibration button, one end of the large / small vibration switching button, one end of the vibration frequency sensor, one end of the secondary vibration pump solenoid valve, and one end of the primary vibration pump solenoid valve are connected to the electronic control unit. The other ends of the start / stop vibration button, the large / small vibration switching button, and the vibration frequency sensor are connected to the power supply. The other ends of the secondary vibration pump solenoid valve and the primary vibration pump solenoid valve are connected to ground.

[0052] The dynamic control system uses the engine ECU controller to control the roller's travel and vibration functions. The travel control system, based on control signals from the bus control handle and speed control knob, controls the solenoid valves of the travel pump and travel motor, enabling the vehicle's forward and backward movement, and simultaneously collects signals for speed display. The vibration control system, based on large and small vibration control signals, controls the proportional valves of the large / small vibration pump, thereby controlling the vibration of the steel wheel. Simultaneously, by real-time detection of the vibration frequency signal, the solenoid valve current value is adjusted to stabilize the vibration frequency within the set range, ensuring compaction quality.

[0053] This invention also provides a road roller control method applied to the aforementioned electrical control unit. The road roller control method includes steps S10, S20, and S30, which are described in detail below.

[0054] S10 regulates the engine control system to achieve engine status management; S20 regulates the walking control system to achieve driving and parking status management; S30 regulates the vibration control system to achieve vibration status management.

[0055] In summary, the present invention provides a road roller motor control assembly system and a road roller control method. The road roller motor control assembly system includes an electronic control unit (ECU), and further includes one or more of an engine control system, a travel control system, and a vibration control system. The engine control system, travel control system, and vibration control system are all connected to the ECU. The ECU is used to regulate the engine control system, travel control system, and vibration control system, thereby achieving engine status management, travel / parking status management, and vibration status management. The engine control unit, located on the road roller's engine, is responsible for engine status, start / stop, and throttle control functions, thus eliminating the need for a dedicated road roller controller. Engine control, travel function control, and vibration function control are all integrated into the ECU, saving road roller layout space, reducing the use of connectors and wires, and improving reliability.

[0056] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

[0057] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A road roller motor control assembly system, characterized in that, The road roller motor control assembly system includes an electronic control unit, and the road roller motor control assembly system also includes any one or more of an engine control system, a travel control system, and a vibration control system; The engine control system, the walking control system, and the vibration control system are all connected to the electronic control unit; The electronic control unit is used to regulate the engine control system, thereby realizing engine status management; The electronic control unit is used to regulate the walking control system, thereby realizing the management of the driving and parking status; The electronic control unit is used to regulate the vibration control system, thereby achieving vibration state management.

2. The road roller motor control assembly system as described in claim 1, characterized in that, The engine control system includes: a start key switch, an emergency stop switch, a starter motor, and a throttle injector; When the start key switch is switched to the ON position, the electronic control unit is powered on and enters the working state; When the electronic control unit is in operation, it controls the starter motor to rotate to start the engine when it detects the start signal generated when the starter key switch is switched to the START position, and at the same time controls the throttle injector corresponding to the engine to inject fuel to ensure the normal operation of the engine. When the start key switch is switched to the OFF position or the emergency stop switch is triggered, the electronic control unit is de-energized and the engine stops working.

3. The road roller motor control assembly system as described in claim 2, characterized in that, The engine control system also includes: a three-speed throttle switch and a speed sensor; When the electronic control unit is in working condition, the electronic control unit is used to monitor the current throttle position of the three-speed throttle switch and control the amount of fuel injected by the throttle injector per unit time according to the current throttle position. The electronic control unit is also used to acquire the current engine speed monitored by the speed sensor, and to perform closed-loop control adjustment of the fuel injection quantity per unit time according to the current engine speed and the current throttle gear, so as to match the engine speed with the current throttle gear.

4. The road roller motor control assembly system as described in claim 1, characterized in that, The driving control system includes: a parking brake switch and a parking brake solenoid valve. When the electronic control unit is in working condition, the electronic control unit is used to control the parking brake solenoid valve to be energized when it detects the parking brake opening signal corresponding to the parking brake switch, so as to control the brake to open and make the road roller enter the waiting driving state. When the electronic control unit is in operation, it controls the parking brake solenoid valve to de-energize when it detects the parking brake closing signal corresponding to the parking brake switch, so as to control the brake to close and put the road roller into parking state.

5. The road roller motor control assembly system as described in claim 4, characterized in that, The walking control system also includes: an electric control handle, a speed adjustment knob, a pump forward solenoid valve, and a vehicle speed sensor. When the road roller is in a waiting state, the electronic control unit is used to monitor the current rotation range of the speed control knob and determine the first set speed based on the current rotation range; The electronic control unit is used to control the current of the pump forward solenoid valve to increase according to the bus message opening value signal of the electronic control handle when it detects that the electronic control handle is pushed forward; The electronic control unit is also used to acquire the current forward speed monitored by the vehicle speed sensor, and to perform closed-loop control of the current of the pump forward solenoid valve based on the current forward speed and the target forward speed, wherein the target forward speed is the speed determined based on the first set vehicle speed and the bus message opening value signal.

6. The road roller motor control assembly system as described in claim 5, characterized in that, The walking control system also includes: a pump retraction solenoid valve; When the road roller is in a waiting state, the electronic control unit is used to monitor the current rotation range of the speed control knob and determine the first set speed based on the current rotation range; The electronic control unit is used to control the current of the pump retraction solenoid valve to increase when it detects that the electronic control handle is pushed backward, based on the bus message opening value signal of the electronic control handle. The electronic control unit is also used to acquire the current reverse speed monitored by the vehicle speed sensor, and to perform closed-loop control of the current of the front and rear solenoid valves of the pump based on the current reverse speed and the target reverse speed, wherein the target reverse speed is the speed determined based on the first set vehicle speed and the bus message opening value signal.

7. The road roller motor control assembly system as described in claim 4, characterized in that, The walking control system also includes: a tortoise and hare switch and a walking motor solenoid valve; When the electronic control unit is in operation, it is used to control the solenoid valve of the travel motor to de-energize when the tortoise and hare switch is detected to be in the tortoise position, so that the travel gear is in the first gear speed; and to control the solenoid valve of the travel motor to energize when the tortoise and hare switch is detected to be in the hare position, so that the travel gear is in the second gear speed.

8. The road roller motor control assembly system as described in claim 1, characterized in that, The vibration control system includes: a start / stop button, a primary vibration pump solenoid valve, and a vibration frequency sensor; When the road roller is in normal operation, the electronic control unit is used to control the primary vibration pump solenoid valve to be energized when it receives the trigger signal of the start / stop vibration button, so that the road roller enters the primary vibration state. When the road roller enters the primary vibration state, the electronic control unit is used to obtain the current vibration frequency of the road roller transmitted by the vibration frequency sensor, and to perform closed-loop control adjustment of the current value of the primary vibration pump solenoid valve according to the current vibration frequency and the primary set vibration frequency corresponding to the primary vibration state, so that the deviation between the current vibration frequency and the primary set vibration frequency is within a preset deviation range.

9. The road roller motor control assembly system as described in claim 8, characterized in that, The vibration control system also includes: a large and small vibration switching button and a secondary vibration pump solenoid valve; When the road roller enters the primary vibration state, the electronic control unit is used to control the primary vibration pump solenoid valve to de-energize after detecting that the large and small vibration switching button is triggered, and after a preset time, control the secondary vibration pump solenoid valve to energize so that the road roller enters the secondary vibration state. When the road roller enters the secondary vibration state, the electronic control unit is used to obtain the current vibration frequency of the road roller transmitted by the vibration frequency sensor, and according to the current vibration frequency and the secondary set vibration frequency corresponding to the secondary vibration state, to perform closed-loop control adjustment of the current value of the secondary vibration pump solenoid valve so that the deviation between the current vibration frequency and the secondary set vibration frequency is within a preset deviation range. When the road roller enters the secondary vibration state, the electronic control unit is used to control the secondary vibration pump solenoid valve to de-energize after detecting that the large and small vibration switching button is triggered, and after a preset time, control the primary vibration pump solenoid valve to energize, so that the road roller enters the primary vibration state.

10. A method for controlling a road roller, characterized in that, The method, applied to the electronic control unit according to any one of claims 1-9, comprises: The engine control system is adjusted to achieve engine status management; The driving control system is adjusted to achieve driving and parking status management; The vibration control system is adjusted to achieve vibration status management.

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