WO2023208155A1

WO2023208155A1 - Intelligent external magnetorheological suspension system with controllable damping, control method and vehicle

Info

Publication number: WO2023208155A1
Application number: PCT/CN2023/091406
Authority: WO
Inventors: 谢和平; 布朗伊恩·贾尔斯; 张杰山; 秦红义
Original assignee: 徐州徐工矿业机械有限公司
Priority date: 2022-04-27
Filing date: 2023-04-27
Publication date: 2023-11-02
Also published as: CN114953880A

Abstract

Disclosed in the present invention are an intelligent external magnetorheological suspension system with controllable damping, a control method and a vehicle. The intelligent external magnetorheological suspension system comprises a suspension cylinder, connecting pipes, a magnetorheological control unit and an energy accumulator, wherein the magnetorheological control unit is located between the suspension cylinder and the energy accumulator, and all three are connected by means of the connecting pipes; a magnetorheological fluid is disposed between the suspension cylinder, the magnetorheological control unit and the energy accumulator; when the suspension cylinder is compressed and then extends, the magnetorheological fluid is conducted to flow back and forth by the suspension cylinder and the energy accumulator; when an external current is applied to the magnetorheological control unit, an electromagnetic field in the magnetorheological control unit promotes the magnetorheological fluid to "solidify", thereby affecting the flow speed of the magnetorheological fluid and the damping magnitude of the suspension system; and by means of increasing and decreasing the external current, the strength of the electromagnetic field is increased and decreased, so as to facilitate the adjustment of the damping of the system. By means of the present invention, the environmental adaptability, comfortability and system reliability of a vehicle can be effectively improved, the operation efficiency of the vehicle can be improved, the difficulty in terms of design and manufacturing processes can also be reduced, and thus costs can be reduced.

Description

Controllable damping external magnetorheological intelligent suspension system, control method and vehicle

Technical field

The invention relates to an external magnetorheological intelligent suspension system with controllable damping. The suspension cylinder is connected to the axle or wheel hub and is an integral part of the vehicle suspension system. The suspension cylinder will allow the movement of the suspension system to occur and provide damping for the movement. , the application of suspension cylinders is very common, but is not limited to mining construction machinery, agricultural machinery, military and road vehicles, etc. Therefore, the present invention belongs to the field of vehicle technology.

Background technique

The working conditions of mining dump trucks are particularly harsh and the bumps are serious. A reliable suspension system is the key to ensuring the normal operation of the vehicle and the comfort and safety of the driver. With the continuous maturity of the hydraulic system and the reduction of costs, the suspension system of mining dump trucks currently adopts the form of oil and gas suspension, replacing the steel leaf spring suspension, and the comfort has been improved to a certain extent.

Suspension systems are able to use external reservoirs/accumulators to vary the damping properties of the suspension based on cylinder compression. When the piston in the cylinder is pressed in, fluid from the cylinder is forced through the connecting pipe into the reservoir/accumulator. Higher damping control can be achieved on a simple pressurized cylinder through proper control of initial volume and pressure. Multiple accumulator chambers with different set pressures can provide varying degrees of suspension damping based on the compression of the cylinder. However, this is still limited to the initial set pressure, and if the pressure is not checked and maintained, performance will gradually degrade over time. The existing mining dump truck suspension system cannot achieve active control of suspension damping to adapt to different working conditions. Reliability, comfort and safety need to be further improved to meet the ever-increasing demands of mine operations.

CN202110025564.0 and CN202110838279.0 each disclose a mining dump truck oil and gas suspension system, which is a connected balance suspension using conventional oil, using an external reservoir/accumulator, and connecting pipes with the The suspension cylinders are connected and are an uncontrollable damping system. When the vehicle is subject to a large impact from the ground, the shock absorption effect is poor. The vibrations generated by the uneven ground will be transmitted to the frame and cab, causing problems such as cracking of the frame body and poor cab comfort. .

Magnetorheological fluid (MR) is a smart fluid that is a base fluid, usually oil, that suspends micron or nanoscale magnetic particles. When a magnetorheological fluid is exposed to a magnetic field, its properties change. This is because when the magnetic particles within the fluid align with the magnetic field, the fluid "solidifies" and its viscosity increases with the strength of the magnetic field. This principle is applied to magnetorheological cylinders. When the magnetorheological fluid flows through the channel in the piston, the magnets in the cylinder piston increase the viscosity of the magnetorheological fluid. Magnets inside the piston cause rapid and precise changes in the viscosity of the magnetorheological fluid, thereby controlling the resistance to piston movement and the performance of the cylinder.

CN201911181952.7 A hydraulic cylinder of magnetorheological elastomer, which introduces a magnetorheological control cylinder structure and is a magnetorheological structure of the cylinder body. The space inside the cylinder is limited and the structure is relatively complex. In order to match the size of the suspension cylinder for this configuration and application, each component is small in size and cannot adapt to the harsh working conditions of the mine. In addition, the manufacturing process of designing and installing controllable magnets on the oil cylinder is very complicated, resulting in high process equipment and production costs.

Contents of the invention

The invention discloses a controllable damping external magnetorheological intelligent suspension system, which can effectively improve the environmental adaptability, comfort and system reliability of the vehicle, improve the vehicle operating efficiency, and at the same time reduce the difficulty of the design and manufacturing process. cost.

The present invention is implemented according to the following technical solutions:

The invention discloses a controllable damping external magnetorheological intelligent suspension system, which includes a suspension cylinder, a connecting pipe, a magnetorheological control unit and an energy storage device; the magnetorheological control unit is located between the suspension cylinder and the energy storage device. , the three are connected through connecting pipes; magnetorheological fluid is provided between the suspension cylinder, the magnetorheological control unit and the energy storage device; when the suspension cylinder is compressed and extended, it is connected with the energy storage device Together, the magnetorheological fluid is conducted to flow back and forth. When an external current is applied to the magnetorheological control unit, the electromagnetic field in the magnetorheological control unit causes the magnetorheological fluid to "solidify", thus affecting the flow speed and suspension of the magnetorheological fluid. The size of the system damping; by increasing and decreasing the applied current, thereby increasing and decreasing the electromagnetic field intensity, the system damping can be adjusted according to the needs of the suspension system.

It should be noted that magnetorheological fluid consists of base oil and magnetically suspended particles. The base fluid, usually oil, is used to suspend micron or nanometer-sized magnetic particles. When a magnetorheological fluid is exposed to a magnetic field, its properties change. When the magnetic particles within the fluid align with the magnetic field, the fluid "solidifies" and its viscosity increases with the strength of the magnetic field.

A preferred embodiment of the magnetorheological control unit:

The magnetorheological control unit is a flow magnetorheological control unit; the flow magnetorheological control unit includes a closed shell and an electromagnet and a channel located in the shell, and the channel is a magnetorheological fluid channel; The electromagnet generates a magnetic field after being energized, and the magnetic field disappears after the power is turned off; the housing is connected to the connecting pipe through a threaded connection device. When the suspension cylinder is compressed and extended, it conducts the magnetorheological fluid to flow back and forth together with the reservoir, and the connecting pipe passes through The flow magnetorheological control unit receives the magnetorheological fluid; the magnetorheological fluid flows through the channel in the electromagnet. When an external current is applied, the electromagnetic field causes the magnetorheological fluid to "solidify", thereby affecting the flow speed of the magnetorheological fluid. and the size of the suspension system damping.

Another preferred embodiment of the magnetorheological control unit:

The magnetorheological control unit is a surround-type magnetorheological control unit; the surround-type magnetorheological control unit is composed of an electromagnet, and the inside of the electromagnet is a hollow channel; the two ends of the connecting pipe pass through the channel They are respectively connected to the suspension cylinder and the energy storage device, and there is flowing magnetorheological fluid in the connecting pipe; the electromagnet generates a magnetic field after being energized, and the magnetic field passes through the connecting pipe, and the magnetic field disappears after the power is turned off; when the suspension cylinder is compressed and extended , together with the accumulator, the magnetorheological fluid is repeatedly conducted in the connecting tube; when an external current is applied, the electromagnetic field causes the magnetorheological fluid in the connecting tube to "solidify", thereby affecting the flow speed of the magnetorheological fluid and the synthetic damping of the system. size.

A further solution: also includes an intelligent control center; the intelligent control center includes a central controller and a plurality of vehicle operation information collection sensors; the input end of the central controller is electrically connected to a plurality of vehicle operation information collection sensors, and the The output end of the central controller is electrically connected to the magnetorheological control unit; the central controller collects vehicle operating information collected by sensors, performs analysis and calculation, and then outputs a current of predetermined intensity to the magnetorheological control unit. Control the size of the magnetic field.

A further solution: the number of the suspension cylinder is one, the number of the magnetorheological control unit is one, and the number of the energy accumulator is one; a magnetorheological control unit is provided between the suspension cylinder and the energy accumulator. , the suspension cylinder, magnetorheological control unit and energy storage are connected through connecting pipes to form an external magnetorheological intelligent suspension system for a single axle.

The invention also discloses a vehicle, which includes an axle and two sets of the above-mentioned controllable damping external magnetorheological intelligent suspension systems; the two sets of controllable damping external magnetorheological intelligent suspension systems are arranged independently of each other. on both sides of the axle.

A further solution: the number of the suspension cylinders is two, the number of the magnetorheological control units is two, and the number of the energy accumulators is one; there are two suspension cylinders and one energy accumulator. One magnetorheological control unit, suspended The oil cylinder, magnetorheological control unit and energy storage are connected through connecting pipes to form a biaxially interconnected external magnetorheological intelligent suspension system.

The invention also discloses a vehicle, which includes two axles and two sets of the above-mentioned controllable damping external magnetorheological intelligent suspension systems; the two sets of controllable damping external magnetorheological intelligent suspension systems span across each other independently. on both sides of the two axles.

The invention also discloses a control method for external magnetorheological intelligent suspension with controllable damping. The control method is:

There is a flow magnetorheological control unit between the suspension cylinder and the energy storage device, and the three are connected through a connecting pipe; the outside of the flow magnetorheological control unit is a closed casing, and an electromagnet and a channel are provided inside the casing. , the channel is a magnetorheological fluid channel. When the electromagnet is energized, a magnetic field is generated, and the magnetic field disappears after the power is turned off. The shell is connected to the connecting pipe through a threaded connection device. When the suspension cylinder is compressed and extended, it conducts magnetorheology together with the accumulator. The liquid flows back and forth, and the connecting tube receives the magnetorheological fluid through the flow magnetorheological control unit. The magnetorheological fluid flows through the channel in the electromagnet. When an external current is applied, the electromagnetic field causes the magnetorheological fluid to "solidify", thus Affects the flow speed of the magnetorheological fluid and the damping of the suspension system; by increasing and decreasing the applied current, thereby increasing and decreasing the intensity of the electromagnetic field, the system damping can be adjusted according to the needs of the suspension system.

Further plan: multiple vehicle operating information collection sensors are installed on the vehicle; the central controller collects the vehicle operating information collected by the vehicle operating information collection sensors, performs analysis and calculation, and then outputs a current of predetermined intensity to the magnetorheological control unit to control The size of the magnetic field.

There is a surrounding magnetorheological control unit between the suspension cylinder and the energy storage device, and the three are connected through a connecting pipe; the surrounding magnetorheological control unit is composed of an electromagnet, and the inside of the electromagnet is a hollow channel connected After the tube passes through the channel, its two ends are connected to the suspension cylinder and the energy storage device respectively. There is flowing magnetorheological fluid in the connecting tube. When the electromagnet is energized, a magnetic field is generated. The magnetic field passes through the connecting tube. When the power is turned off, the magnetic field disappears; when the suspension When the oil cylinder is compressed and extended, together with the accumulator, the magnetorheological fluid is repeatedly conducted in the connecting tube; when an external current is applied, the electromagnetic field causes the magnetorheological fluid in the connecting tube to "solidify", thus affecting the flow speed of the magnetorheological fluid. and the size of the system's synthetic damping; by increasing and decreasing the applied current, thereby increasing and decreasing the electromagnetic field intensity, the system damping can be adjusted according to the needs of the suspension system.

Beneficial effects of the present invention:

The invention can effectively improve the environmental adaptability, comfort and system reliability of the vehicle, improve the vehicle operating efficiency, and at the same time reduce the difficulty of the design and manufacturing process and reduce the cost. The invention has many advantages over existing solutions, especially those systems that already use energy accumulators. Specifically: first, install the connecting pipe on the existing dump truck suspension system. The magnetorheological control unit realizes variable damping control of the suspension system, improving the vehicle's environmental adaptability and comfort; secondly, the system still uses traditional oil cylinders, avoiding the design of complex magnetorheological cylinders, effectively reducing costs. , improve system reliability. Third, the design of the external magnetorheological control unit is no longer limited by the size of the suspension cylinder. With the elimination of constraints, the potential versatility increases. Fourth, improving suspension performance will improve the product's ride experience and increase productivity, because there is no need to reduce speed under bumpy road conditions, and fuel utilization will be improved by maintaining a stable driving speed.

Description of the drawings

The drawings, as part of the present invention, are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation of the present invention. Obviously, the drawings in the following description are only some embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without exerting creative efforts.

In the attached picture:

Figure 1 is a single-axle suspension system using a flow magnetorheological control unit according to the present invention;

Figure 2 is the detailed structure of the flow magnetorheological control unit according to the present invention;

Figure 3 is a single-axle suspension system using a surround-type magnetorheological control unit according to the present invention;

Figure 4 is the detailed structure of the surround-type magnetorheological control unit according to the present invention;

Figure 5 is a dual-axle interconnected suspension system using a flow magnetorheological control unit according to the present invention;

Figure 6 is a dual-axle interconnected suspension system using a surround-type magnetorheological control unit according to the present invention;

Figure 7 is a schematic diagram of the connection between the magnetorheological control unit and the intelligent control center according to the present invention;

Figure 8 is a specific example of the controllable damping intelligent suspension system according to the present invention;

Figure 9 is a specific example two of the controllable damping intelligent suspension system according to the present invention.

Figure identification: 1. Suspension cylinder; 2. Connecting pipe; 3. Flow magnetorheological control unit; 4. Surrounding magnetorheological control unit; 5. Energy storage device; 6. Threaded connection device; 7. Intelligent control center ;3a, electromagnet; 3b, channel; 3c, electromagnetic field; 4a, electromagnet; 4b, electromagnetic field.

It should be noted that these drawings and text descriptions are not intended to limit the scope of the invention in any way, but are intended to illustrate the concept of the invention for those skilled in the art by referring to specific embodiments.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following examples are used to illustrate the present invention. , but are not used to limit the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inner", "outer", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description. It does not indicate or imply that the device or element referred to must have a specific orientation or a specific orientation. construction and operation, and therefore should not be construed as limitations of the invention.

In the description of the present invention, it should be noted that, unless otherwise clearly stated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection. Connection, or integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.

What I want to explain here is that magnetorheological fluid consists of base oil and magnetically suspended particles. The base fluid, usually oil, is used to suspend micron or nanometer-sized magnetic particles. When a magnetorheological fluid is exposed to a magnetic field, its properties change. When the magnetic particles within the fluid align with the magnetic field, the fluid "solidifies" and its viscosity increases with the strength of the magnetic field.

Figure 1 shows a single-axle suspension system using a flow magnetorheological control unit according to the present invention, including a suspension cylinder 1, a connecting pipe 2, a flow magnetorheological control unit 3, an energy storage device 5, and a threaded connection device 6.

Figure 2 shows the structural diagram of the flow magnetorheological control unit 3. The flow magnetorheological control unit 3 is composed of an electromagnet 3a and a channel 3b. The outside is a closed shell, and the inside of the channel 3b is a magnetorheological fluid channel. When the electromagnet 3a is powered on, it generates a magnetic field 3c, and when the power is turned off, the magnetic field 3c disappears.

Continuing to refer to Figures 1 and 2, the flow magnetorheological control unit 3 is directly connected to the connecting pipe 2 through the threaded connection device 6. When the suspension cylinder 1 is compressed and extended, it conducts the magnetorheological fluid to flow back and forth together with the accumulator 5. , while the connecting pipe 2 receives the magnetorheological fluid through the flow magnetorheological control unit 3 . The magnetorheological fluid flows through the channel 3b in the electromagnet 3a. When an external current is applied, the electromagnetic field 3c causes the magnetorheological fluid to "solidify", thus affecting the flow speed of the magnetorheological fluid and the damping of the suspension system. By increasing and decreasing the applied current, thereby increasing and decreasing the intensity of the electromagnetic field 3c, the system damping can be adjusted according to the needs of the suspension system.

Figure 3 shows a single-axle suspension system using a wrap-around magnetorheological control unit according to the present invention, including a suspension cylinder 1, a connecting pipe 2, a wrap-around magnetorheological control unit 4, and an energy storage device 5.

Figure 4 shows the structural diagram of the surrounding magnetorheological control unit 4. The surrounding magnetorheological control unit 4 is composed of an electromagnet 4a, with a hollow channel inside. The connecting tube 2 passes through the channel. The inside of the connecting tube 2 is Flowing magnetorheological fluid. When the electromagnet 4a is energized, it generates a magnetic field 4b. The magnetic field 4b passes through the connecting tube 2. The magnetic field 4b disappears after the power is turned off.

Continuing to refer to FIGS. 3 and 4 , the surrounding magnetorheological control unit 4 is installed around the connecting pipe 2 . When the suspension cylinder 1 is compressed and extended, the magnetorheological fluid is repeatedly conducted in the connecting pipe 2 together with the accumulator 5 . The surrounding magnetorheological control unit 4 contains an electromagnet 4a. When an external current is applied, the electromagnetic field 4b causes the magnetorheological fluid in the connecting tube 2 to "solidify", thus affecting the flow speed of the magnetorheological fluid and the synthetic damping of the system. size. By increasing and decreasing the applied current and thus the intensity of the electromagnetic field 4b, the system damping can be adjusted according to the needs of the suspension system.

Figure 5 shows the dual-axle interconnected suspension system using a flow magnetorheological control unit according to the present invention, which has two suspension cylinders 1, two flow magnetorheological control units 3, and an energy storage device 5. The connecting pipe 2 connects the above components to form a biaxial interconnection form.

Figure 6 shows a dual-axle interconnected suspension system using a wrap-around magnetorheological control unit according to the present invention, which has 2 suspension cylinders 1, 2 wrap-around magnetorheological control units 4, and 1 energy storage device 5. Connect the above components through the connecting pipe 2 to form a biaxial interconnection form.

Figure 7 shows a schematic diagram of the connection between the magnetorheological control unit and the intelligent control center according to the present invention. The flow magnetorheological control unit 3 or the surrounding magnetorheological control unit 4 is controlled by the intelligent control center 7. The intelligent control center 7 is composed of a central controller and vehicle operation information collection sensors such as acceleration, speed, inclination and load installed on the vehicle. The central controller collects vehicle operation information collected from various sensors of the vehicle, performs analysis and calculation, and then outputs a certain intensity of current to the flow magnetorheological control unit 3 or the surrounding magnetorheological control unit 4 to control the electromagnetic field 3c or the electromagnetic field 4b. size.

Figure 8 is a single-axle case of the controllable damping intelligent suspension system according to the present invention: consisting of an axle, an external magnetorheological intelligent suspension system on the left single axle, and an external magnetorheological intelligent suspension system on the right single axle. Composed, in which the left and right sides are single The external magnetorheological smart suspension systems of the axles are independent of each other.

Figure 9 is a case of dual-axle interconnection of the controllable damping intelligent suspension system according to the present invention: an external magnetorheological intelligent suspension system interconnected by axle one, axle two, and the left two-axle, and an external two-axle interconnection on the right. It consists of a magnetorheological intelligent suspension system, in which the external magnetorheological intelligent suspension systems on the left and right sides are biaxially interconnected and independent of each other.

In summary, the present invention can effectively improve the environmental adaptability, comfort and system reliability of the vehicle, improve the vehicle operating efficiency, and at the same time reduce the difficulty of the design and manufacturing process and reduce the cost. The invention has many advantages over existing solutions, especially those systems that already use energy accumulators. Specifically: first, design a magnetorheological control unit on the existing dump truck suspension system connection pipeline to achieve variable damping control of the suspension system and improve the vehicle's environmental adaptability and comfort; second, the system is still in use Traditional oil cylinders avoid the complex design of magnetorheological oil cylinders, effectively reducing costs and improving system reliability. Third, the design of the external magnetorheological control unit is no longer limited by the size of the suspension cylinder. With the elimination of constraints, the potential versatility increases. Fourth, improving suspension performance will improve the product's ride experience and increase productivity, because there is no need to reduce speed under bumpy road conditions, and fuel utilization will be improved by maintaining a stable driving speed.

In the instructions provided here, a number of specific details are described. However, it is understood that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this description.

In addition, those skilled in the art will understand that although some embodiments described herein include some features contained in other embodiments but not other features, the combination of features of different embodiments is also meant to be within the scope of the present invention. within the scope of protection and form different embodiments. For example, in the above embodiments, those skilled in the art can use them in combination according to the known technical solutions and the technical problems to be solved by this application.

The above are only preferred embodiments of the present invention, and do not limit the present invention in any form. Although the present invention has been disclosed above in preferred embodiments, it is not intended to limit the present invention. Anyone familiar with the technology of this patent Without departing from the scope of the technical solution of the present invention, personnel can make some changes or modify the above-mentioned technical contents into equivalent embodiments with equivalent changes. Technical Essence Any simple modifications, equivalent changes and modifications made to the above embodiments still fall within the scope of the present invention.

Claims

The controllable damping external magnetorheological intelligent suspension system is characterized by:

Includes suspension cylinder, connecting pipe, magnetorheological control unit and energy storage device;

The magnetorheological control unit is located between the suspension cylinder and the energy storage device, and the three are connected through a connecting pipe;

There is magnetorheological fluid between the suspension cylinder, the magnetorheological control unit and the energy storage device;

When the suspension cylinder is compressed and extended, the magnetorheological fluid is conducted to flow back and forth together with the energy storage device. When an external current is applied to the magnetorheological control unit, the electromagnetic field in the magnetorheological control unit promotes the generation of magnetorheological fluid. "Solidification", thus affecting the flow speed of the magnetorheological fluid and the damping of the suspension system;

By increasing and decreasing the applied current, thereby increasing and decreasing the electromagnetic field intensity, the system damping can be adjusted according to the needs of the suspension system.
The controllable damping external magnetorheological intelligent suspension system according to claim 1, characterized in that:

The magnetorheological control unit is a flow magnetorheological control unit;

The flow magnetorheological control unit includes a closed housing, an electromagnet and a channel located in the housing, and the channel is a magnetorheological fluid channel;

The electromagnet generates a magnetic field after being powered on, and the magnetic field disappears when the power is turned off;

The housing is connected to the connecting pipe through a threaded connection device. When the suspension cylinder is compressed and extended, it conducts the magnetorheological fluid to flow back and forth together with the reservoir, and the connecting pipe receives the magnetorheological fluid through the flow magnetorheological control unit;

The magnetorheological fluid flows through the channel in the electromagnet. When an external current is applied, the electromagnetic field causes the magnetorheological fluid to "solidify", thereby affecting the flow speed of the magnetorheological fluid and the damping of the suspension system.
The controllable damping external magnetorheological intelligent suspension system according to claim 1, characterized in that:

The magnetorheological control unit is a surround-type magnetorheological control unit;

The surrounding magnetorheological control unit is composed of an electromagnet, and the inside of the electromagnet is a hollow channel;

After the connecting pipe passes through the channel, its two ends are connected to the suspension cylinder and the energy storage device respectively, and there is flowing magnetorheological fluid in the connecting pipe;

The electromagnet generates a magnetic field after being energized, and the magnetic field passes through the connecting pipe. The magnetic field disappears after the power is turned off;

When the suspension cylinder is compressed and extended, together with the accumulator, the magnetorheological fluid is repeatedly conducted in the connecting tube; when an external current is applied, the electromagnetic field causes the magnetorheological fluid in the connecting tube to "solidify", thus affecting the properties of the magnetorheological fluid. Flow velocity and the magnitude of the system's resultant damping.
The controllable damping external magnetorheological intelligent suspension system according to claim 1, characterized in that:

Also includes an intelligent control center;

The intelligent control center includes a central controller and multiple vehicle operating information collection sensors;

The input end of the central controller is electrically connected to a plurality of vehicle operating information collection sensors, and the output end of the central controller is electrically connected to the magnetorheological control unit;

The central controller collects the vehicle operating information collected by the vehicle operating information collection sensor, performs analysis and calculation, and then outputs a predetermined intensity current to the magnetorheological control unit to control the size of the magnetic field.
The controllable damping external magnetorheological intelligent suspension system according to any one of claims 1 to 4, characterized by:

The number of the suspension cylinder is one, the number of the magnetorheological control unit is one, and the number of the energy accumulator is one;

There is a magnetorheological control unit between the suspension cylinder and the energy storage device. The suspension cylinder, the magnetorheological control unit and the energy storage device are are connected through connecting tubes to form an external magnetorheological intelligent suspension system for a single axle.
A vehicle, including an axle, characterized by:

It also includes two sets of controllable damping external magnetorheological intelligent suspension systems according to claim 5;

Two sets of controllable damping external magnetorheological intelligent suspension systems are independently arranged on both sides of the axle.
The controllable damping external magnetorheological intelligent suspension system according to any one of claims 1 to 4, characterized by:

The number of the suspension cylinders is two, the number of the magnetorheological control units is two, and the number of the energy storage devices is one;

There is a magnetorheological control unit between the two suspension cylinders and the energy storage device. The suspension cylinder, the magnetorheological control unit and the energy storage device are connected through connecting pipes to form a biaxial interconnected external magnetic flow. Become an intelligent suspension system.
A vehicle including two axles, characterized by:

It also includes two sets of controllable damping external magnetorheological intelligent suspension systems according to claim 5;

Two sets of external magnetorheological smart suspension systems with controllable damping are independent of each other and straddle both sides of the two axles.
The external magnetorheological intelligent suspension control method with controllable damping is characterized by:

There is a flow magnetorheological control unit between the suspension cylinder and the energy storage device, and the three are connected through a connecting pipe;

The outside of the flow magnetorheological control unit is a closed casing. The casing is equipped with an electromagnet and a channel. Inside the channel is a magnetorheological fluid channel. The electromagnet generates a magnetic field when it is energized, and the magnetic field disappears when the power is turned off;

The shell is connected to the connecting pipe through a threaded connection device. When the suspension cylinder is compressed and extended, it conducts the magnetorheological fluid to flow back and forth together with the accumulator, and the connecting pipe receives the magnetorheological fluid through the flow magnetorheological control unit. The magnetorheological fluid The fluid flows through the channel in the electromagnet. When an external current is applied, the electromagnetic field causes the magnetorheological fluid to "solidify", thus affecting the flow speed of the magnetorheological fluid and the damping of the suspension system;

By increasing and decreasing the applied current, thereby increasing and decreasing the electromagnetic field intensity, the system damping can be adjusted according to the needs of the suspension system.
The controllable damping external magnetorheological intelligent suspension control method according to claim 9, characterized in that:

There are multiple vehicle operating information collection sensors installed on the vehicle; the central controller collects the vehicle operating information collected by the vehicle operating information collection sensors, performs analysis and calculation, and then outputs a predetermined intensity current to the magnetorheological control unit to control the size of the magnetic field.
The external magnetorheological intelligent suspension control method with controllable damping is characterized by:

There is a surrounding magnetorheological control unit between the suspension cylinder and the energy accumulator, and the three are connected through connecting pipes;

The surrounding magnetorheological control unit is composed of an electromagnet. The inside of the electromagnet is a hollow channel. After the connecting pipe passes through the channel, its two ends are connected to the suspension cylinder and the energy storage device respectively. There is flowing magnetorheological fluid in the connecting pipe. The electromagnet generates a magnetic field when energized, and the magnetic field passes through the connecting tube. The magnetic field disappears when the power is turned off;

When the suspension cylinder is compressed and extended, together with the accumulator, the magnetorheological fluid is repeatedly conducted in the connecting tube; when an external current is applied, the electromagnetic field causes the magnetorheological fluid in the connecting tube to "solidify", thus affecting the properties of the magnetorheological fluid. Flow velocity and the magnitude of the system’s resultant damping;

By increasing and decreasing the applied current, thereby increasing and decreasing the electromagnetic field intensity, the system damping can be adjusted according to the needs of the suspension system.
The controllable damping external magnetorheological intelligent suspension control method according to claim 11, characterized in that:

There are multiple vehicle operating information collection sensors installed on the vehicle; the central controller collects the vehicle operating information collected by the vehicle operating information collection sensors, performs analysis and calculation, and then outputs a predetermined intensity current to the magnetorheological control unit to control the size of the magnetic field.