An amphibious vehicle steering control system

Abstract

This utility model discloses an amphibious vehicle steering control system, including a hydraulic power unit and a steering execution unit, as well as a cylinder displacement sensing unit, an environmental sensing unit, and a steering control unit. The cylinder displacement sensing unit and the environmental sensing unit are both electrically connected to the steering control unit, and the cylinder displacement sensing unit is located on the steering execution unit. This amphibious vehicle steering control system is rationally designed. Based on cylinder displacement sensing, the amphibious vehicle steering system achieves precise control of the steering angle by accurately monitoring the cylinder displacement, improving the steering performance, stability, and reliability of the amphibious vehicle in aquatic environments, and solving the problems of poor steering accuracy and weak environmental adaptability in existing steering systems.

Description

Technical Field

[0001] This utility model relates to the field of amphibious vehicle steering technology, and in particular to an amphibious vehicle steering control system. Background Technology

[0002] Amphibious vehicles, as special transportation tools capable of operating in both land and water environments, have broad application prospects in fields such as disaster relief, military transport, and scientific research. During the operation of an amphibious vehicle, the steering system is a key component for achieving vehicle steering, and its performance directly affects the vehicle's handling, stability, and safety.

[0003] Currently, most traditional amphibious vehicle steering systems employ mechanical or simple hydraulic transmissions. While mechanical transmissions are simple in structure, they suffer from low transmission efficiency, high wear, and poor steering precision. Especially during transitions between land and water environments, mechanical components are susceptible to corrosion and damage, leading to steering failure. Simple hydraulic steering systems, while improving transmission efficiency and steering force to some extent, lack a precise feedback control mechanism, making accurate steering angle control difficult. Existing steering systems cannot quickly adapt to the steering requirements of different environments during land-water transitions, resulting in decreased vehicle steering performance and impacting the overall usability of the amphibious vehicle. For example, a steering control mechanism for an amphibious vehicle disclosed in patent CN120348104A suffers from the aforementioned problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an amphibious vehicle steering control system that enables precise control of the steering angle.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] The amphibious vehicle steering control system includes a hydraulic power unit and a steering execution unit, as well as a cylinder displacement sensing unit, an environmental perception unit, and a steering control unit; the cylinder displacement sensing unit and the environmental perception unit are electrically connected to the steering control unit, and the cylinder displacement sensing unit is located on the steering execution unit.

[0007] Further or preferred:

[0008] The steering control unit includes a central processing module, a signal acquisition interface module, a control algorithm execution module, an output drive module, a power management module, and a communication interface module.

[0009] The hydraulic power unit includes an integrated hydraulic pump, hydraulic valve group, oil tank, and pipelines.

[0010] The cylinder displacement sensing unit is a displacement sensor used to monitor the displacement of the cylinder in real time.

[0011] The steering actuation unit includes a connected hydraulic cylinder and a steering rudder structure, and the cylinder displacement sensing unit is mounted on the hydraulic cylinder.

[0012] The steering rudder structure includes a fixed nozzle, a steering nozzle, a rotating shaft, and a swing arm. One end of the swing arm is connected to the steering nozzle via the rotating shaft, and the other end of the swing arm is connected to the piston rod end of the hydraulic cylinder.

[0013] The displacement sensor is a magnetostrictive displacement sensor or a grating displacement sensor.

[0014] The environmental sensing unit includes a gyroscope, an accelerometer, a water level sensor, and a water flow velocity sensor.

[0015] Compared with the prior art, this utility model has the following advantages:

[0016] The amphibious vehicle steering control system is reasonably designed. Based on the cylinder displacement sensor, the amphibious vehicle steering system can accurately control the steering angle by precisely monitoring the cylinder displacement, thereby improving the steering performance, stability and reliability of the amphibious vehicle in the water environment and solving the problems of poor steering accuracy and weak environmental adaptability of the existing steering system. Attached Figure Description

[0017] The following is a brief explanation of the contents of each of the accompanying drawings and the markings in the drawings:

[0018] Figure 1 This is a schematic diagram of the steering control system of this utility model.

[0019] Figure 2 This is a schematic diagram of the steering mechanism of this utility model.

[0020] Figure 3 This is a schematic diagram of the vehicle's steering mode in wading.

[0021] Figure 4 This is a flowchart of the steering control system of this utility model.

[0022] In the picture:

[0023] 1. Steering control unit, 2. Hydraulic power unit, 3. Cylinder displacement sensing unit, 4. Steering execution unit, 5. Environmental sensing unit, 4-1 Fixed nozzle, 4-2 Steering nozzle, 4-3 Rotary shaft, 4-4 Swing arm. Detailed Implementation

[0024] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and through the description of the examples.

[0025] The amphibious vehicle steering control system includes a hydraulic power unit, a steering actuation unit, a cylinder displacement sensing unit, an environmental perception unit, and a steering control unit; the cylinder displacement sensing unit and the environmental perception unit are both electrically connected to the steering control unit, and the cylinder displacement sensing unit is located on the steering actuation unit.

[0026] The steering control unit includes a central processing module, a signal acquisition interface module, a control algorithm execution module, an output drive module, a power management module, and a communication interface module. The environmental perception unit includes a gyroscope, an accelerometer, a water level sensor, and a water flow velocity sensor, used for detecting the operating environment.

[0027] The hydraulic power unit includes an integrated hydraulic pump, hydraulic valve group, oil tank, and pipelines. The steering actuation unit includes a connected hydraulic cylinder and steering rudder structure, with a cylinder displacement sensing unit mounted on the hydraulic cylinder.

[0028] The cylinder displacement sensing unit is a displacement sensor used to monitor the displacement of the cylinder in real time; furthermore, the displacement sensor is a magnetostrictive displacement sensor or a grating displacement sensor, which has high position detection accuracy.

[0029] The steering rudder structure includes a fixed nozzle, a steering nozzle, a rotating shaft, and a swing arm. One end of the swing arm is connected to the steering nozzle via the rotating shaft, and the other end is connected to the piston rod end of a hydraulic cylinder. The amphibious vehicle steering system based on cylinder displacement sensing achieves precise control of the steering angle by accurately monitoring the cylinder displacement, improving the amphibious vehicle's steering performance, stability, and reliability in aquatic environments, and solving problems such as poor steering accuracy and weak environmental adaptability in existing steering systems.

[0030] This invention has the following advantages: 1. Precise steering control: A high-precision cylinder displacement sensing unit monitors the cylinder displacement in real time and feeds it back to the steering control unit, achieving closed-loop control of the steering angle. Compared to traditional steering systems, it can more precisely control the steering wheel deflection angle, improving vehicle steering accuracy and meeting the steering accuracy requirements of amphibious vehicles in both land and water environments. 2. Good environmental adaptability: The environmental perception unit can collect real-time information on the vehicle's attitude, motion state, and land and water environment. The steering control unit automatically selects appropriate control strategies based on different environmental conditions. When driving in water, it can effectively overcome water flow interference, ensuring stable vehicle steering and greatly improving the amphibious vehicle's steering performance and adaptability in different environments. 3. Improved system reliability: The steering system of this invention uses hydraulic transmission, combined with precise displacement sensing and closed-loop control, reducing wear and tear on mechanical components and the probability of failure. Simultaneously, the collaborative work and redundant design between units further improve the system's reliability and stability, reduce maintenance costs, and extend the service life of the steering system.

[0031] like Figures 1 to 4 As shown, a preferred embodiment of this utility model is as follows:

[0032] The steering control system based on cylinder displacement sensing of the present invention includes a steering control unit 1, a hydraulic power unit 2, a cylinder displacement sensing unit 3, a steering execution unit 4, and an environmental perception unit 5. The steering control unit 1 is the core of the entire steering system and adopts a modular design, mainly including a central processing module, a signal acquisition interface module, a control algorithm execution module, an output drive module, a power management module, and a communication interface module. This unit receives steering command signals input by the driver through the steering wheel, and simultaneously receives the actual cylinder displacement signals fed back by the cylinder displacement sensing unit 3 and environmental information collected by the environmental perception unit 5. Based on a preset control strategy and algorithm, it analyzes and processes these signals to calculate the required cylinder displacement and parameters such as the output pressure and flow rate of the hydraulic power unit 2, thereby generating corresponding control signals to drive the hydraulic power unit 2 and the steering execution unit 4 to achieve precise control of the steering angle. The hydraulic power unit 2 consists of a hydraulic pump, a hydraulic valve group, an oil tank, and pipelines. Under the control of the steering control unit 1, the hydraulic pump draws hydraulic oil from the oil tank, pressurizes it, and delivers it to the hydraulic valve group through pipelines. The hydraulic valve assembly, according to the instructions of the steering control unit 1, precisely adjusts the flow and pressure of the hydraulic oil, delivering hydraulic oil with appropriate pressure and flow to the cylinder to provide power to the steering actuator 4. The cylinder displacement sensing unit 3 is a high-precision displacement sensor, such as a magnetostrictive displacement sensor or a grating displacement sensor, installed on the hydraulic cylinder to monitor the cylinder's displacement in real time. The displacement sensor converts the cylinder's displacement signal into an electrical signal and feeds it back to the steering control unit 1, enabling the steering control unit 1 to monitor the actual working state of the cylinder in real time, thereby achieving closed-loop control of the steering angle.

[0033] The steering actuation unit 4 mainly includes a hydraulic cylinder and a steering rudder structure. The hydraulic cylinder extends and retracts under the action of hydraulic oil supplied by the hydraulic power unit 2. The steering rudder device converts the linear motion of the cylinder into the deflection motion of the steering nozzle 4-2, changing the direction of the water jet and thus enabling the amphibious vehicle to turn on water. The steering rudder structure includes a fixed nozzle 4-1, a steering nozzle 4-2, a rotating shaft 4-3, a swing arm 4-4, and various connecting pins and bolts. The design is optimized, possessing good transmission efficiency and reliability, and accurately converting the displacement of the cylinder into the angle change of the steering nozzle 4-2. The environmental perception unit 5 includes multiple sensors, such as a gyroscope, accelerometer, water level sensor, and water flow velocity sensor. The gyroscope and accelerometer are used to monitor the vehicle's attitude and motion status in real time, the water level sensor is used to detect whether the vehicle is in a water environment and the water level, and the water flow velocity sensor is used to measure the water flow velocity and direction in the water environment. The environmental perception unit 5 transmits the collected environmental information to the steering control unit 1 in real time, enabling the steering control unit 1 to adjust the steering control strategy according to different environmental conditions, thereby improving the vehicle's steering adaptability in different water and land environments.

[0034] Steering process under water conditions: When the amphibious vehicle enters water, the water level sensor in the environmental perception unit detects changes in water level, determines that the vehicle has entered a water environment, and transmits this information to the steering control unit. Simultaneously, the water flow velocity sensor measures the speed and direction of the water flow in real time and transmits this data to the steering control unit. After receiving this environmental information, the steering control unit selects a water steering control strategy.

[0035] The driver inputs a steering command signal by turning the steering wheel. The steering control unit, based on the steering command signal, vehicle attitude information (provided by a gyroscope and accelerometer), and environmental information such as water flow speed and direction, uses a preset control algorithm to calculate the required cylinder displacement and control parameters such as the output pressure and flow rate of the hydraulic power unit. Then, the steering control unit generates a control signal to control the hydraulic power unit, causing the hydraulic cylinder to extend and retract, which in turn drives the steering wheels to deflect via the steering linkage mechanism.

[0036] During steering, the cylinder displacement sensing unit continuously monitors the cylinder displacement and feeds back the real-time signal to the steering control unit. Based on the deviation between the feedback signal and the target signal, the steering control unit adjusts the control signal in a timely manner to overcome the interference of water flow on vehicle steering, ensuring that the vehicle can be stably steered according to the driver's intentions in aquatic environments.

[0037] The above description is only a preferred embodiment of the present utility model. The above technical features can be arbitrarily combined to form multiple embodiments of the present utility model.

[0038] The present invention has been described above with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the concept and technical solution of the present invention, or the direct application of the concept and technical solution of the present invention to other occasions without modification, are all within the protection scope of the present invention.

Claims

1. A steering control system for an amphibious vehicle, comprising a hydraulic power unit and a steering actuator unit, characterized in that: It also includes a cylinder displacement sensing unit, an environmental sensing unit, and a steering control unit; the cylinder displacement sensing unit and the environmental sensing unit are both electrically connected to the steering control unit, and the cylinder displacement sensing unit is located on the steering actuation unit.

2. The amphibious vehicle steering control system as described in claim 1, characterized in that: The steering control unit includes a central processing module, a signal acquisition interface module, a control algorithm execution module, an output drive module, a power management module, and a communication interface module.

3. The amphibious vehicle steering control system as described in claim 1, characterized in that: The hydraulic power unit includes an integrated hydraulic pump, hydraulic valve group, oil tank, and pipelines.

4. The amphibious vehicle steering control system as described in claim 3, characterized in that: The cylinder displacement sensing unit is a displacement sensor used to monitor the displacement of the cylinder in real time.

5. The amphibious vehicle steering control system as described in claim 4, characterized in that: The steering actuation unit includes a connected hydraulic cylinder and a steering rudder structure, and the cylinder displacement sensing unit is mounted on the hydraulic cylinder.

6. The amphibious vehicle steering control system as described in claim 5, characterized in that: The steering rudder structure includes a fixed nozzle, a steering nozzle, a rotating shaft, and a swing arm. One end of the swing arm is connected to the steering nozzle via the rotating shaft, and the other end of the swing arm is connected to the piston rod end of the hydraulic cylinder.

7. The amphibious vehicle steering control system as described in claim 5, characterized in that: The displacement sensor is a magnetostrictive displacement sensor or a grating displacement sensor.

8. The amphibious vehicle steering control system as described in any one of claims 1 to 7, characterized in that: The environmental sensing unit includes a gyroscope, an accelerometer, a water level sensor, and a water flow velocity sensor.

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