Brake control method, device and train for high-speed superconducting electromagnetic suspension train

Abstract

The present application discloses a braking control method, device and train for a high-speed superconducting electromagnetic levitation train. An electric braking mechanism, a skid braking mechanism, an aerodynamic braking mechanism and a disc braking mechanism are arranged on the train. When braking control needs to be implemented, the target braking condition of the high-speed superconducting electromagnetic levitation train is determined according to the acquired state information, and the target braking mechanism is determined from the electric braking mechanism, the skid braking mechanism, the aerodynamic braking mechanism and the disc braking mechanism according to the target braking condition. Then, the target braking mechanism is controlled to execute the braking task to realize the braking of the high-speed superconducting electromagnetic levitation train. By adding the aerodynamic braking mechanism and the disc braking mechanism, when in different target braking conditions, the corresponding combination of the electric braking mechanism, the skid braking mechanism, the aerodynamic braking mechanism and the disc braking mechanism is selected as the target braking mechanism to implement braking, so as to meet the requirements of various braking conditions of the high-speed superconducting electromagnetic levitation train.

Description

Technical Field

[0001] The present application relates to the field of high-speed superconducting electromagnetic suspension trains, and particularly to a braking control method, device and train for a high-speed superconducting electromagnetic suspension train. Background Art

[0002] The technical characteristics of the braking system of a high-speed superconducting electromagnetic suspension train are different from those of traditional multiple units, urban rail transit trains, and electromagnetic suspension trains. Most of the braking systems of multiple units and urban rail transit trains implement braking by utilizing the adhesion force between wheels and rails, and a few use eddy current braking and magnetic track braking; a high-speed electromagnetic suspension train can achieve zero-speed in-situ suspension, and it realizes the braking of the whole vehicle through electric braking, eddy current braking, and skid braking; for a high-speed superconducting electromagnetic suspension train, it needs to rely on running wheels to accelerate to 100 - 150 km / h in the low-speed acceleration stage before entering the suspension state, and it needs to rely on running wheels to support the whole vehicle to run after decelerating from high speed to 150 km / h, that is, the train does not have the suspension function in the low-speed stage.

[0003] In view of this characteristic of the high-speed superconducting electromagnetic suspension train, at present, there is no mature solution for the braking system of the high-speed superconducting electromagnetic suspension train in China, and the current technology is in a blank stage. Summary of the Invention

[0004] In order to solve the above technical problems, the present application provides a braking control method, device and train for a high-speed superconducting electromagnetic suspension train, filling the blank of the braking scheme for the high-speed superconducting electromagnetic suspension train and meeting the requirements of various braking working conditions of the high-speed superconducting electromagnetic suspension train.

[0005] The embodiments of the present application disclose the following technical solutions:

[0006] In a first aspect, the embodiments of the present application provide a braking control method for a high-speed superconducting electromagnetic suspension train, the method comprising:

[0007] Obtain the state information of the high-speed superconducting electromagnetic suspension train;

[0008] Determine the target braking working condition of the high-speed superconducting electromagnetic suspension train according to the state information;

[0009] Determine the target braking mechanism from an electric braking mechanism, a skid braking mechanism, an aerodynamic braking mechanism, and a disc braking mechanism according to the target braking working condition;

[0010] Control the target braking mechanism to execute the braking task to achieve the braking of the high-speed superconducting electromagnetic suspension train.

[0011] Optionally, if the target braking condition is a normal start and acceleration condition, the target braking mechanism is the electric braking mechanism, the aerodynamic braking mechanism, and the disc braking mechanism, or the target braking mechanism is the electric braking mechanism and the aerodynamic braking mechanism.

[0012] Optionally, if the target braking condition is a service braking condition or a holding braking condition, the target braking mechanism is the electric braking mechanism and the disc braking mechanism.

[0013] Optionally, if the target braking condition is an emergency braking condition, the target braking mechanism is the electric braking mechanism, the aerodynamic braking mechanism, and the disc braking mechanism.

[0014] Optionally, the state information is the working state of the electric braking mechanism of the high-speed superconducting maglev train. Determining the target braking condition of the high-speed superconducting maglev train according to the state information includes:

[0015] If the working state of the electric braking mechanism indicates that the electric braking mechanism is in a fault state of a target level, determine that the target braking condition is a safety braking condition.

[0016] Optionally, determining the target braking mechanism from the electric braking mechanism, the skid braking mechanism, the aerodynamic braking mechanism, and the disc braking mechanism according to the target braking condition includes:

[0017] Obtain the running speed of the high-speed superconducting maglev train;

[0018] Determine the target braking mechanism from the electric braking mechanism, the skid braking mechanism, the aerodynamic braking mechanism, and the disc braking mechanism according to the running speed and the target braking condition.

[0019] Optionally, if the target braking condition is an emergency braking condition, the aerodynamic braking mechanism includes a folding aerodynamic braking mechanism and a vertical lifting aerodynamic braking mechanism. Determining the target braking mechanism from the electric braking mechanism, the skid braking mechanism, the aerodynamic braking mechanism, and the disc braking mechanism according to the running speed and the target braking condition includes:

[0020] If it is determined that the running speed is in the process of decelerating from a first speed to a second speed, determine that the vertical lifting aerodynamic braking mechanism and the electric braking mechanism are the target braking mechanisms;

[0021] If it is determined that the running speed is in the process of decelerating from the second speed to a third speed, determine that the vertical lifting aerodynamic braking mechanism, the folding aerodynamic braking mechanism, and the electric braking mechanism are the target braking mechanisms;

[0022] If it is determined that the driving speed is in the process of decelerating from the third speed to the fourth speed, determine the aerodynamic braking mechanism and the electric braking mechanism as the target braking mechanisms;

[0023] If it is determined that the driving speed is in the process of decelerating from the fourth speed to the fifth speed, determine the aerodynamic braking mechanism, the electric braking mechanism, and the disc braking mechanism as the target braking mechanisms.

[0024] Optionally, if the target braking condition is a safety braking condition, the aerodynamic braking mechanism includes a folding aerodynamic braking mechanism and a vertical lifting aerodynamic braking mechanism. Determining the target braking mechanism from the electric braking mechanism, the skid braking mechanism, the aerodynamic braking mechanism, and the disc braking mechanism according to the driving speed and the target braking condition includes:

[0025] If it is determined that the driving speed is in the process of decelerating from the sixth speed to the seventh speed, determine the folding aerodynamic braking mechanism and the vertical lifting aerodynamic braking mechanism as the target braking mechanisms;

[0026] If it is determined that the driving speed is in the process of decelerating from the seventh speed to the eighth speed, determine the aerodynamic braking mechanism as the target braking mechanism;

[0027] If it is determined that the driving speed is in the process of decelerating from the eighth speed to the ninth speed, determine the aerodynamic braking mechanism and the disc braking mechanism as the target braking mechanisms.

[0028] Optionally, if the target braking condition is a car-drop braking condition or a parking braking condition, the target braking mechanism is the skid braking mechanism.

[0029] In a second aspect, an embodiment of the present application provides a braking control device for a high-speed superconducting maglev train, and the device includes:

[0030] An acquisition unit, configured to acquire the state information of the high-speed superconducting maglev train;

[0031] A determination unit, configured to determine the target braking condition of the high-speed superconducting maglev train according to the state information;

[0032] The determination unit is further configured to determine a target braking mechanism from an electric braking mechanism, a skid braking mechanism, an aerodynamic braking mechanism, and a disc braking mechanism according to the target braking condition;

[0033] A control unit for controlling the target braking mechanism to perform a braking task to achieve braking of the high-speed superconducting electromagnetic levitation train.

[0034] Optionally, if the target braking condition is a normal start and acceleration condition, the target braking mechanism is the electric braking mechanism, the aerodynamic braking mechanism, and the disc braking mechanism, or the target braking mechanism is the electric braking mechanism and the aerodynamic braking mechanism.

[0035] Optionally, if the target braking condition is a service braking condition or a holding braking condition, the target braking mechanism is the electric braking mechanism and the disc braking mechanism.

[0036] Optionally, if the target braking condition is an emergency braking condition, the target braking mechanism is the electric braking mechanism, the aerodynamic braking mechanism, and the disc braking mechanism.

[0037] Optionally, the state information is the working state of the electric braking mechanism of the high-speed superconducting electromagnetic levitation train, and the determining unit is configured to:

[0038] If the working state of the electric braking mechanism indicates that the electric braking mechanism is in a target-level fault state, determine that the target braking condition is a safety braking condition.

[0039] Optionally, the control unit is configured to:

[0040] Obtain the traveling speed of the high-speed superconducting electromagnetic levitation train;

[0041] Determine the target braking mechanism from the electric braking mechanism, the skid braking mechanism, the aerodynamic braking mechanism, and the disc braking mechanism according to the traveling speed and the target braking condition.

[0042] Optionally, if the target braking condition is an emergency braking condition, the aerodynamic braking mechanism includes a folding aerodynamic braking mechanism and a vertical lifting aerodynamic braking mechanism, and the control unit is configured to:

[0043] If it is determined that the traveling speed is in the process of decelerating from a first speed to a second speed, determine that the vertical lifting aerodynamic braking mechanism and the electric braking mechanism are the target braking mechanisms;

[0044] If it is determined that the traveling speed is in the process of decelerating from the second speed to a third speed, determine that the vertical lifting aerodynamic braking mechanism, the folding aerodynamic braking mechanism, and the electric braking mechanism are the target braking mechanisms;

[0045] If it is determined that the traveling speed is in the process of decelerating from the third speed to the fourth speed, determine the aerodynamic braking mechanism and the electric braking mechanism as the target braking mechanisms;

[0046] If it is determined that the traveling speed is in the process of decelerating from the fourth speed to the fifth speed, determine the aerodynamic braking mechanism, the electric braking mechanism, and the disc braking mechanism as the target braking mechanisms.

[0047] Optionally, if the target braking condition is a safety braking condition, the aerodynamic braking mechanism includes a folding aerodynamic braking mechanism and a vertical lifting aerodynamic braking mechanism, and the control unit is configured to:

[0048] If it is determined that the traveling speed is in the process of decelerating from the sixth speed to the seventh speed, determine the folding aerodynamic braking mechanism and the vertical lifting aerodynamic braking mechanism as the target braking mechanisms;

[0049] If it is determined that the traveling speed is in the process of decelerating from the seventh speed to the eighth speed, determine the aerodynamic braking mechanism as the target braking mechanism;

[0050] If it is determined that the traveling speed is in the process of decelerating from the eighth speed to the ninth speed, determine the aerodynamic braking mechanism and the disc braking mechanism as the target braking mechanisms.

[0051] Optionally, if the target braking condition is a car body lowering braking condition or a parking braking condition, the target braking mechanism is the skid braking mechanism.

[0052] In a third aspect, an embodiment of the present application provides a high-speed superconducting maglev train, which includes multiple carriages, running wheels, a braking device, and a braking control unit. The braking device includes an electric braking mechanism, a skid braking mechanism, an aerodynamic braking mechanism, and a disc braking mechanism:

[0053] The skid braking mechanism is installed at the bottom of the train suspension frame;

[0054] The aerodynamic braking mechanism is installed at the target positions of the multiple carriages;

[0055] The disc braking mechanism is installed inside the running wheels of the train suspension frame;

[0056] The braking control unit is configured to execute the method according to any one of the first aspect.

[0057] Optionally, the aerodynamic braking mechanism includes a vertical lifting aerodynamic braking mechanism, and the target positions are the end walls of each carriage in the multiple carriages.

[0058] Optionally, the vertical lifting aerodynamic braking mechanism includes an aerodynamic braking wing plate and a cylinder inside the vertical lifting aerodynamic braking mechanism. The vertical lifting aerodynamic braking mechanism is configured to be driven by compressed air to the cylinder, pushing the aerodynamic braking wing plate to rise upward.

[0059] Optionally, the multi - section carriages include a head - car carriage and non - head - car carriages. The aerodynamic braking mechanism includes a folding aerodynamic braking mechanism and a vertical lifting aerodynamic braking mechanism. The folding aerodynamic braking mechanism is installed on the car - body structure above the train suspension of the head - car carriage, and the vertical lifting aerodynamic braking mechanism is installed on the end wall of the non - head - car carriage. The target positions are the car - body structure above the train suspension of the head - car carriage and the end wall of the non - head - car carriage.

[0060] Optionally, the folding aerodynamic braking mechanism includes an aerodynamic braking wing plate and an oil cylinder inside the folding aerodynamic braking mechanism. The folding aerodynamic braking mechanism is configured to be driven by pressure oil to the oil cylinder, pushing the aerodynamic braking wing plate to open in the vertical direction;

[0061] The vertical lifting aerodynamic braking mechanism includes an aerodynamic braking wing plate and a cylinder inside the vertical lifting aerodynamic braking mechanism, and is used to be driven by compressed air to the cylinder, pushing the aerodynamic braking wing plate to rise upward.

[0062] Optionally, the running wheels are rubber wheels.

[0063] As can be seen from the above technical solutions, the present application provides a braking control method for a high - speed superconducting electromagnetic suspension train. The method sets an electric braking mechanism, a skid braking mechanism, an aerodynamic braking mechanism and a disc braking mechanism on the high - speed superconducting electromagnetic suspension train. When it is necessary to brake the high - speed superconducting electromagnetic suspension train, the state information of the high - speed superconducting electromagnetic suspension train is obtained, the target braking condition of the high - speed superconducting electromagnetic suspension train is determined according to the state information, the target braking mechanism is determined from the electric braking mechanism, the skid braking mechanism, the aerodynamic braking mechanism and the disc braking mechanism according to the target braking condition, and then the target braking mechanism is controlled to execute the braking task to achieve the braking of the high - speed superconducting electromagnetic suspension train. This method fills the blank of the braking scheme for high - speed superconducting electromagnetic suspension trains. By adding an aerodynamic braking mechanism and a disc braking mechanism, it is realized that under different target braking conditions, a corresponding combination of the electric braking mechanism, the skid braking mechanism, the aerodynamic braking mechanism and the disc braking mechanism is selected as the target braking mechanism to brake the high - speed superconducting electromagnetic suspension train, so as to meet the requirements of various braking conditions of the high - speed superconducting electromagnetic suspension train. Description of the Drawings

[0064] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0065] Figure 1 It is a structural diagram of a high-speed superconducting electromagnetic suspension train provided by an embodiment of the present application;

[0066] Figure 2 It is a schematic diagram of the layout of an aerodynamic braking mechanism provided by an embodiment of the present application;

[0067] Figure 3 It is a flowchart of a braking control method for a high-speed superconducting electromagnetic suspension train provided by an embodiment of the present application;

[0068] Figure 4 It is a schematic diagram of a control curve under a common braking condition provided by an embodiment of the present application;

[0069] Figure 5 It is a schematic diagram of a control curve under an emergency braking condition provided by an embodiment of the present application;

[0070] Figure 6 It is a schematic diagram of a control curve under a safety braking condition provided by an embodiment of the present application;

[0071] Figure 7 It is another schematic diagram of a control curve under a safety braking condition provided by an embodiment of the present application;

[0072] Figure 8 It is a structural diagram of a braking control device for a high-speed superconducting electromagnetic suspension train provided by an embodiment of the present application. Detailed implementation manners

[0073] The following will describe the embodiments of the present application with reference to the drawings.

[0074] There is no mature solution for the braking system of high-speed superconducting electromagnetic suspension trains in China, and the current technology is in a blank stage.

[0075] Therefore, the present application provides a braking control method, device and train for high-speed superconducting electromagnetic suspension trains, filling the blank of the braking scheme for high-speed superconducting electromagnetic suspension trains and meeting the requirements of various braking conditions of high-speed superconducting electromagnetic suspension trains.

[0076] See Figure 1 , Figure 1The structural schematic diagram of a high-speed superconducting electromagnetic levitation train is shown. The high-speed superconducting electromagnetic levitation train includes multiple carriages 101, running wheels 102, a braking device 103, and a braking control unit 104. The braking device 103 includes an electric braking mechanism 1031, a skid braking mechanism 1032, an aerodynamic braking mechanism 1033, and a disc braking mechanism 1034.

[0077] Among them, the electric braking mechanism 1031, the skid braking mechanism 1032, the aerodynamic braking mechanism 1033, and the disc braking mechanism 1034 included in the braking device 103 are distributed at different positions of the high-speed superconducting electromagnetic levitation train.

[0078] As Figure 1 shown, the skid braking mechanism 1032 is installed at the bottom of the train suspension frame so as to implement braking by relying on the friction between the skid braking mechanism 1032 and the track. Figure 1 Only the installation position of the skid braking mechanism 1032 is exemplarily shown. As long as it is ensured that the installation position of the skid braking mechanism 1032 is at the bottom of the train suspension frame and can friction with the track to provide friction force for braking, the specific installation position is not limited.

[0079] The aerodynamic braking mechanism 1033 is installed at the target position of multiple carriages; the disc braking mechanism 1034 is installed inside the running wheels of the train suspension frame. As Figure 1 shown by the dashed-line rectangular frame in the figure, the running wheel is enlarged to show the installation relationship between the running wheel and the disc braking mechanism 1034. The braking control unit (BCU) 1035 is a device for braking control on the high-speed superconducting electromagnetic levitation train, which is used to determine the target braking condition, so as to determine the target braking mechanism from the electric braking mechanism 1031, the skid braking mechanism 1032, the aerodynamic braking mechanism 1033, and the disc braking mechanism 1034 according to the target braking condition, and then control the target braking mechanism to execute the braking task to achieve the braking of the high-speed superconducting electromagnetic levitation train.

[0080] The different braking mechanisms included in the braking device 103 are used to implement different braking methods for the high-speed superconducting electromagnetic levitation train. The electric braking mechanism 1031 is used to implement electric braking on the high-speed superconducting electromagnetic levitation train, the skid braking mechanism 1032 is used to implement skid braking on the high-speed superconducting electromagnetic levitation train, the aerodynamic braking mechanism 1033 is used to implement aerodynamic braking on the high-speed superconducting electromagnetic levitation train, and the disc braking mechanism 1034 is used to implement disc braking on the high-speed superconducting electromagnetic levitation train. Among them, electric braking and aerodynamic braking belong to non-adhesive braking, and disc braking and skid braking belong to adhesive braking. The above four braking methods will be introduced in detail below.

[0081] 1) Electric braking: Both regenerative braking and resistive braking are forms of electric braking for high-speed superconducting maglev trains. They use an electric braking mechanism, which is achieved by adjusting the control strategy of the traction control system for the inverter module to convert the linear motor from the electric state to the generating state. When the linear motor is in the generating state, the ground coil applies a braking force opposite to the running direction of the high-speed superconducting maglev train to the superconducting magnet, forcing the high-speed superconducting maglev train to decelerate. At the same time, the kinetic energy of the high-speed superconducting maglev train is converted into electrical energy and fed back to the power supply side.

[0082] 2) Aerodynamic braking: A method of achieving braking and deceleration by relying on the aerodynamic braking flaps included in the aerodynamic braking mechanism installed on the high-speed superconducting maglev train. In a possible implementation, the aerodynamic braking mechanism of the high-speed superconducting maglev train includes two types: a folding aerodynamic braking mechanism and a vertical lifting aerodynamic braking mechanism. The layout of its aerodynamic braking mechanism is shown in Figure 2 .

[0083] Folding aerodynamic braking mechanism: The multiple carriages of the high-speed superconducting maglev train include a head car carriage and non-head car carriages. The folding aerodynamic braking mechanism is installed on the vehicle body structure above the train suspension frame of the head car carriage (see the indication of 1 in Figure 2 ). It relies on pressure oil to drive the oil cylinder installed inside the mechanism, pushing the entire aerodynamic braking flap to open vertically. The folding aerodynamic braking mechanism includes an aerodynamic braking flap and an oil cylinder inside the folding aerodynamic braking mechanism. The folding aerodynamic braking mechanism can rely on pressure oil to drive the oil cylinder and push the aerodynamic braking flap to open vertically.

[0084] Vertical lifting aerodynamic braking mechanism: The vertical lifting aerodynamic braking mechanism is installed on the end wall of the non-head car carriage (see the indication of 2 in Figure 2 ). The vertical lifting aerodynamic braking mechanism includes an aerodynamic braking flap and a cylinder inside the vertical lifting aerodynamic braking mechanism. The vertical lifting aerodynamic braking mechanism can rely on compressed air to drive the cylinder and push the aerodynamic braking flap to rise.

[0085] When the aerodynamic braking mechanism includes a folding aerodynamic braking mechanism and a vertical lifting aerodynamic braking mechanism, the target positions are the vehicle body structure above the train suspension frame of the head car carriage and the end wall of the non-head car carriage.

[0086] In some cases, the aerodynamic braking mechanism may only include a vertical lifting aerodynamic braking mechanism, and in this case, the target position is on the end walls of each carriage in a multi-carriage train. The vertical lifting aerodynamic braking mechanism includes an aerodynamic braking flap and a cylinder inside the vertical lifting aerodynamic braking mechanism. The vertical lifting aerodynamic braking mechanism is used to drive the cylinder with compressed air to push the aerodynamic braking flap to rise upward.

[0087] When the aerodynamic braking mechanism only includes the vertical lifting aerodynamic braking mechanism, the structure and drive system of the aerodynamic braking mechanism can be simplified.

[0088] In the above two cases, the control of the aerodynamic braking mechanism can be achieved by opening different numbers of vertical lifting aerodynamic braking mechanisms at different speeds to match the speed and braking deceleration.

[0089] 3) Disc braking: The disc braking mechanism is installed inside the running wheels of the train suspension frame and is braked and released by pressure oil.

[0090] It can be understood that in the embodiments of the present application, the running wheels can be rubber wheels. Since the running wheels of the high-speed superconducting electromagnetic levitation train adopt a rubber wheel structure, the adhesion coefficient with the cement road surface is greater than that of the wheel-rail structure of traditional railways, and it is less affected by wet sliding rail surfaces. Therefore, the braking force that the disc braking can exert is greater and more stable.

[0091] 4) Skid braking: The skid braking mechanism is installed at the bottom of the train suspension frame and brakes by relying on the friction between the skid and the track. The skid braking is used for the train suspension frame to land and implement the landing braking and parking braking conditions when the superconductor quenches.

[0092] Based on the braking methods of the high-speed superconducting electromagnetic levitation train provided above, there may be multiple braking conditions for the high-speed superconducting electromagnetic levitation train, and different braking conditions may require at least one braking method to implement braking.

[0093] Typical braking conditions usually include normal start-up and acceleration conditions, service braking conditions, holding braking conditions, emergency braking conditions, safety braking conditions, parking braking conditions, and landing braking conditions, and the braking force can be adjusted according to the load.

[0094] Normal start-up and acceleration conditions: As the high-speed superconducting electromagnetic levitation train continuously accelerates, a hybrid braking method of electric braking, aerodynamic braking, and disc braking can be adopted first, and then a hybrid braking method of electric braking and aerodynamic braking can be used.

[0095] Normal braking condition: The combined braking mode of electric braking and disc braking is adopted, with electric braking being given priority. When electric braking and disc braking are coordinated, smooth conversion should be achievable. The braking system should have an anti-skid control function to make full use of the adhesion force.

[0096] Under normal braking condition, the braking system will adjust for empty and loaded vehicles according to the air spring pressure to ensure that the high-speed superconducting maglev train has the same braking deceleration requirement under different loads.

[0097] Under normal braking condition, real-time coordination and cooperation between electric braking and disc braking are adopted. With the principle of giving priority to electric braking, electric braking is used as much as possible. After the landing gear is lowered, the high-speed superconducting maglev train is supported by the running wheels. When the electric braking cannot meet the braking force required by the braking command, the insufficient braking force is supplemented by disc braking, so that the sum of the electric braking force and the disc braking force can meet the braking deceleration required by the braking command. The calculation of the vehicle's total braking force is completed by the BCU. The electronic braking control unit (EBCU) sends the load signal calculated by collecting the air spring pressure to the BCU. The BCU calculates the vehicle's total braking force based on the current load and the braking command. The drive control unit (DCU) feeds back the actually achievable electric braking force to the BCU. The BCU calculates the required supplementary disc braking force and sends it to the EBCU based on the currently exerted electric braking force and the vehicle's total braking force. When the electric braking force can meet the braking force required for the entire high-speed superconducting maglev train, the high-speed superconducting maglev train does not supplement disc braking; when the total electric braking force cannot meet the braking force required for the high-speed superconducting maglev train, the magnitude of the required supplementary disc braking force is the difference between the braking force required for the high-speed superconducting maglev train and the total electric braking force. This difference will be preferentially evenly distributed on each suspension bogie to achieve disc braking compensation. The braking system has an anti-skid control function to make full use of the adhesion force between the running wheels and the rail surface. Under normal braking condition, there are two ways: hardwired transmission and network transmission. The high-speed superconducting maglev train mainly uses network signals, with hardwired signals as a backup.

[0098] Holding braking condition: Used for braking after the high-speed superconducting maglev train stops. The high-speed superconducting maglev train is braked by the disc braking mechanism installed on the running wheels to keep the high-speed superconducting maglev train in a stopped state continuously. Ensure that the overloaded high-speed superconducting maglev train will not run away on the maximum slope. After the traction force of the high-speed superconducting maglev train overcomes the holding braking force, the holding braking is released.

[0099] The holding brake control function or ramp start function of the brake control unit can keep the high-speed superconducting maglev train stationary when it stops on a ramp, preventing it from rolling back when starting on a ramp.

[0100] Under normal circumstances, the EBCU applies the holding brake according to the holding brake command issued by the BCU. The disc brake mechanism will apply disc brakes sufficient to keep the high-speed superconducting maglev train stationary on a ramp.

[0101] Emergency braking condition: In the emergency braking condition, electric braking, aerodynamic braking, and hydraulic disc braking can be coordinated to complete. In an emergency, by raising the aerodynamic brake wing plates to expand the windward projection area, and at the same time applying electric braking to meet the braking deceleration requirements. After the high-speed superconducting maglev train decelerates to 200 km / h, the landing gear starts to lower. After the landing gear is fully lowered, the disc brake mechanism supplements the insufficient part of the braking force.

[0102] In the emergency braking condition, real-time constant deceleration control can be adopted. The BCU conducts the overall vehicle braking management and coordinates the cooperation of electric braking, aerodynamic braking, and disc braking.

[0103] Emergency braking is a braking mode in which electric braking, aerodynamic braking, and disc braking are coordinated and applied directly controlled by the emergency safety loop train line. The load compensation for emergency braking is adjusted according to the air spring pressure collected. After emergency braking occurs, it is not allowed to release the brake before the high-speed superconducting maglev train completely stops. Any of the following situations will result in the implementation of emergency braking:

[0104] Striking the emergency braking button;

[0105] Train separation;

[0106] Hydraulic underpressure;

[0107] The train emergency braking electrical loop is interrupted or de-energized;

[0108] The BCU issues an emergency braking command

[0109] Requirements for the implementation of emergency braking:

[0110] After the emergency braking command is issued, it cannot be withdrawn, and the train must decelerate until it stops;

[0111] Regardless of what causes the emergency braking to be triggered, the high-speed superconducting maglev train must apply braking with the emergency braking deceleration;

[0112] When the emergency braking acts, the braking of the high-speed superconducting maglev train is not restricted by its longitudinal impact rate;

[0113] During the emergency braking process, the emergency braking electrical loop of the high-speed superconducting maglev train loses power;

[0114] After the emergency braking command is issued, the braking force is jointly borne by electric braking, aerodynamic braking, and disc braking.

[0115] Under the emergency braking condition, there are two ways of hardwired transmission and network transmission. The high-speed superconducting maglev train mainly uses network signals and hardwired signals as a backup.

[0116] Safety braking condition: After a target-level fault occurs in the electric braking of the high-speed superconducting maglev train, the safety braking is completed through the coordination of aerodynamic braking and disc braking. Under the safety braking condition, real-time deceleration control is adopted, and the BCU conducts vehicle braking management to coordinate the cooperation of aerodynamic braking and disc braking. It is required that the disc braking performs anti-skid control and load compensation. Under the safety braking condition, there are two ways of hardwired transmission and network transmission. The high-speed superconducting maglev train mainly uses network signals and hardwired signals as a backup.

[0117] Generally, the electric braking fault is divided into 3-level fault modes. Electric braking level 1 fault: The electric braking failure is not more than 10%; Electric braking level 2 fault: The electric braking failure is 10% - 30%; Electric braking level 3 fault: The electric braking failure is greater than 30%. When the electric braking of the high-speed superconducting maglev train is in a level 1 fault, the train operates at a reduced speed. When the electric braking of the high-speed superconducting maglev train is in a level 2 fault, the high-speed superconducting maglev train relies on the braking method under the normal braking condition to implement braking and stop. When the electric braking of the high-speed superconducting maglev train is in a level 3 fault, the safety braking is activated. At this time, the target level is 3.

[0118] Parking braking condition: When the high-speed superconducting maglev train needs to be parked for a long time, skid braking is used to implement parking braking. Rely on the friction generated by the contact between the skid and the rail surface to ensure that the train can meet the requirements of safe parking under the maximum load, maximum wind speed, and maximum ramp.

[0119] Lowering the car braking condition: When an extreme condition occurs where the superconductor quenches and the landing gear cannot land normally, skid braking installed at the bottom of the train suspension is used to implement braking.

[0120] Next, based on the high-speed superconducting maglev train provided above, the braking control method of the high-speed superconducting maglev train will be introduced. See Figure 3 , the method includes:

[0121] S301. Obtain the state information of the high-speed superconducting maglev train.

[0122] S302. Determine the target braking condition of the high-speed superconducting maglev train according to the state information.

[0123] S303. Determine the target braking mechanism from the electric braking mechanism, skid braking mechanism, aerodynamic braking mechanism and disk braking mechanism according to the target braking condition.

[0124] S304. Control the target braking mechanism to perform the braking task to achieve the braking of the high-speed superconducting maglev train.

[0125] In a possible implementation manner, if the target braking condition is the normal start and acceleration condition, the target braking mechanisms are the electric braking mechanism, the aerodynamic braking mechanism and the disk braking mechanism, or the target braking mechanisms are the electric braking mechanism and the aerodynamic braking mechanism.

[0126] When the high-speed superconducting maglev train is in a stationary state and the landing gear is lowered, the whole vehicle is supported by the running wheels installed on the landing gear. During the acceleration process of the high-speed superconducting maglev train from 0 to 150 km / h, the running is carried out by relying on the running wheels. In this stage, the conditions for implementing electric braking, aerodynamic braking and disk braking are available. At this time, the target braking mechanisms are the electric braking mechanism, the aerodynamic braking mechanism and the disk braking mechanism; when the speed of the high-speed superconducting maglev train starts to retract the landing gear from 150 km / h and the landing gear is completely retracted when the speed reaches 180 km / h, the high-speed superconducting maglev train enters the levitation state, that is, during the acceleration process of the high-speed superconducting maglev train, after the vehicle speed is greater than 150 km / h, the conditions for implementing electric braking and aerodynamic braking are available, and the condition for implementing disk braking is not available. At this time, the target braking mechanisms are the electric braking mechanism and the aerodynamic braking mechanism.

[0127] In a possible implementation manner, if the target braking condition is the service braking condition or the holding braking condition, the target braking mechanisms are the electric braking mechanism and the disk braking mechanism.

[0128] When the high-speed superconducting maglev train is running at a high speed and decelerating normally, the speed of the high-speed superconducting maglev train is reduced to 200 km / h by using electric braking, and then the landing gear starts to be lowered, and the whole vehicle is supported by the running wheels installed on the landing gear. During this process, the deceleration is carried out by relying on electric braking. After the landing gear is completely lowered, the whole vehicle is supported by the running wheels for running. In this stage, electric braking and disk braking are used to implement deceleration braking.

[0129] The braking function is stable under normal braking conditions. When the high-speed superconducting maglev train is under normal braking conditions, it completely relies on electric braking to smoothly decelerate the high-speed superconducting maglev train from high speed to 7 km / h, and then switches to electric-wheel disc braking. When the speed drops to 3 km / h, disc brakes are used to apply holding braking until the high-speed superconducting maglev train comes to a complete stop. During this process, a constant deceleration of 1 m / s 2 can be maintained. The electric braking of the high-speed superconducting maglev train is not affected by adhesion factors and can achieve constant deceleration control. The control curve under normal braking conditions is shown in Figure 4 .

[0130] After the high-speed superconducting maglev train stops, braking is implemented on the high-speed superconducting maglev train through the disc brake mechanism installed on the running wheels, so that the high-speed superconducting maglev train can continuously maintain a stopped state. Ensure that the overloaded high-speed superconducting maglev train will not slip on the maximum ramp. After the traction force of the high-speed superconducting maglev train overcomes the holding braking force, the holding braking is released.

[0131] In a possible implementation, if the target braking condition is an emergency braking condition, the target braking mechanisms are the electric braking mechanism, the aerodynamic braking mechanism, and the disc brake mechanism.

[0132] When an emergency braking condition is encountered, emergency braking needs to be implemented. Emergency braking can give full play to the control ability of braking and adopt different braking control strategies for different speed sections. At high speeds, braking is mainly based on aerodynamic braking and electric braking. Since the aerodynamic braking force of the high-speed superconducting maglev train is basically proportional to the square of the running speed, as the vehicle speed decreases, the aerodynamic braking force will also decrease exponentially. Therefore, two types of aerodynamic braking, namely the folding aerodynamic braking of the leading car and the vertical lifting aerodynamic braking of the intermediate cars, can be arranged to intervene in braking at different speed stages. This can not only make full use of the braking ability of aerodynamic braking but also control the impact of excessive aerodynamic braking on the running stability of the train at high speeds. Under emergency braking conditions, it is required that the high-speed superconducting maglev train maintains a constant deceleration of 1.8 m / s 2 . The control curve under emergency braking conditions is shown in Figure 5 .

[0133] Based on this, in a possible implementation, the method of determining the target braking mechanism from the electric braking mechanism, the skid braking mechanism, the aerodynamic braking mechanism, and the disc brake mechanism according to the target braking condition can be to obtain the running speed of the high-speed superconducting maglev train; determine the target braking mechanism from the electric braking mechanism, the skid braking mechanism, the aerodynamic braking mechanism, and the disc brake mechanism according to the running speed and the target braking condition.

[0134] In a possible implementation, if the target braking condition is an emergency braking condition, the aerodynamic braking mechanism includes a folding aerodynamic braking mechanism and a vertical lifting aerodynamic braking mechanism. The method of determining the target braking mechanism from the electric braking mechanism, the skid braking mechanism, the aerodynamic braking mechanism, and the disc braking mechanism according to the driving speed and the target braking condition may be as follows: if it is determined that the driving speed is in the process of decelerating from the first speed to the second speed, determine the vertical lifting aerodynamic braking mechanism and the electric braking mechanism as the target braking mechanisms; if it is determined that the driving speed is in the process of decelerating from the second speed to the third speed, determine the vertical lifting aerodynamic braking mechanism, the folding aerodynamic braking mechanism, and the electric braking mechanism as the target braking mechanisms; if it is determined that the driving speed is in the process of decelerating from the third speed to the fourth speed, determine the aerodynamic braking mechanism and the electric braking mechanism as the target braking mechanisms; if it is determined that the driving speed is in the process of decelerating from the fourth speed to the fifth speed, determine the aerodynamic braking mechanism, the electric braking mechanism, and the disc braking mechanism as the target braking mechanisms.

[0135] For example, divide the above emergency braking condition into four stages, and select the corresponding target braking mechanism to implement braking in each stage:

[0136] 1) First stage: During the process of decelerating from 650 km / h to 500 km / h, use the vertical lifting aerodynamic braking mechanism installed on the non-leading carriages and the electric braking mechanism. The aerodynamic braking implemented by the aerodynamic braking mechanism is the main one, and the electric braking implemented by the electric braking mechanism is the auxiliary. To ensure that the aerodynamic braking deceleration of the high-speed superconducting maglev train when running at 650 km / h is not higher than 1.8 m / s 2 , in this stage, only the vertical lifting aerodynamic braking mechanism is put into use, and the folding aerodynamic braking mechanism installed on the leading carriages does not intervene. At the same time, to ensure that the high-speed superconducting maglev train maintains a constant deceleration of 1.8 m / s 2 during emergency braking, the control system of the high-speed superconducting maglev train will use electric braking to supplement the insufficient part of the aerodynamic braking in real time. At this time, the first speed is 650 km / h of deceleration, and the second speed is 500 km / h.

[0137] 2) Second stage: During the process of decelerating from 500 km / h to 200 km / h, use the folding aerodynamic braking mechanism, the vertical lifting aerodynamic braking mechanism, and the electric braking mechanism to jointly implement braking. As the speed of the high-speed superconducting maglev train decreases, the braking ability exerted by the vertical lifting aerodynamic braking mechanism decreases accordingly. In this stage, the folding aerodynamic braking mechanism intervenes to supplement the insufficient braking force provided by the vertical lifting aerodynamic braking mechanism of the intermediate carriages. However, the emergency braking deceleration provided by the two in this stage is still not higher than 1.8 m / s 2 , to ensure that the high-speed superconducting maglev train maintains 1.8 m / s during emergency braking2 At a constant deceleration rate, the control system of the high-speed superconducting maglev train will use electric braking to supplement the insufficient part of aerodynamic braking in real time. As the speed further decreases, electric braking will play a dominant role, and the deceleration capacity provided by aerodynamic braking will rapidly decline. At this time, the second speed is 500 km / h, and the third speed is 200 km / h.

[0138] 3) Third stage: During the process of decelerating from 200 km / h to 150 km / h, this is the stage where the high-speed superconducting maglev train transitions from the levitation state to the state of being supported by running wheels. The high-speed superconducting maglev train lowers its landing gear and uses the running wheels installed on the landing gear to support the whole vehicle. During this process, deceleration is implemented by relying on the aerodynamic braking mechanism and the electric braking mechanism. Since the aerodynamic braking force is extremely weak in this stage, in order for the high-speed superconducting maglev train to maintain a constant deceleration rate of 1.8 m / s 2 the electric braking mechanism will exert its braking force to the maximum extent. At this time, the third speed is 200 km / h, and the fourth speed is 150 km / h.

[0139] 4) Fourth stage: During the process of decelerating from 150 km / h to 0 km / h, deceleration braking is implemented by using the aerodynamic braking mechanism, the electric braking mechanism, and the disc braking mechanism. Due to the decrease in speed, the role played by the aerodynamic braking mechanism weakens. In this stage, the electric braking mechanism is the main one, and the disc braking mechanism supplements the insufficient part of the braking force provided by the electric braking mechanism. At this time, the fourth speed is 150 km / h, and the fifth speed is 0 km / h.

[0140] In a possible implementation manner, the state information is the working state of the electric braking mechanism of the high-speed superconducting maglev train. The method for determining the target braking condition of the high-speed superconducting maglev train according to the state information can be that if the working state of the electric braking mechanism indicates that the electric braking mechanism is in a target-level fault state, the target braking condition is determined to be the safety braking condition. According to the previously introduced electric braking fault level, the target level can be level 3.

[0141] When the electric braking mechanism of the high-speed superconducting maglev train is in a level 3 fault (the target-level fault), it enters the safety braking condition. Under the safety braking condition, the electric braking provided by the electric braking mechanism is completely revoked, and the aerodynamic braking of the high-speed superconducting maglev train is maximally exerted. Under the safety braking condition, it is required that the average braking deceleration of the high-speed superconducting maglev train is not less than 1.5 m / s 2 . The control under the safety braking condition is divided into two types. The first type is that when the landing gear of the train is lowered and the braking control system works normally, constant deceleration control is achieved, and its control curve is shown in Figure 6As shown; the second is to achieve a constant wheel disc braking force when the braking control system malfunctions after the landing gear of the high-speed superconducting maglev train is lowered, and its braking curve is shown in Figure 7 As shown.

[0142] In a possible implementation, if the target braking condition is a safety braking condition, the aerodynamic braking mechanism includes a folding aerodynamic braking mechanism and a vertical lifting aerodynamic braking mechanism. The method of determining the target braking mechanism from the electric braking mechanism, skid braking mechanism, aerodynamic braking mechanism, and wheel disc braking mechanism according to the traveling speed and the target braking condition can be as follows: if it is determined that the traveling speed is in the process of decelerating from the sixth speed to the seventh speed, determine the folding aerodynamic braking mechanism and the vertical lifting aerodynamic braking mechanism as the target braking mechanisms; if it is determined that the traveling speed is in the process of decelerating from the seventh speed to the eighth speed, determine the aerodynamic braking mechanism as the target braking mechanism; if it is determined that the traveling speed is in the process of decelerating from the eighth speed to the ninth speed, determine the aerodynamic braking mechanism and the wheel disc braking mechanism as the target braking mechanisms.

[0143] For example, divide the above safety braking condition into three stages, and select the corresponding target braking mechanism to implement braking in each stage:

[0144] 1) The first stage: during the process of decelerating from 650 km / h to 400 km / h, the folding aerodynamic braking mechanism and the vertical lifting aerodynamic braking mechanism jointly implement braking, and its maximum braking force will be greater than 1.5 m / s 2 . At this time, the sixth speed is 650 km / h, and the seventh speed is 400 km / h.

[0145] 2) The second stage: during the process of decelerating from 400 km / h to 350 km / h, this stage is the conversion stage of the high-speed superconducting maglev train from the suspended state to the state of relying on the running wheels to support walking. The high-speed superconducting maglev train lowers the landing gear and uses the running wheels installed on the landing gear to support the whole vehicle. During this process, deceleration is implemented by relying on the aerodynamic braking mechanism. At this time, the seventh speed is 400 km / h, and the eighth speed is 350 km / h.

[0146] 3) Third stage: During the process of decelerating from 350 km / h to 0 km / h, air dynamic braking mechanism and disk braking mechanism are used to implement deceleration braking. The air dynamic braking provided by the air dynamic braking mechanism decreases sharply with the reduction of speed, and the disk braking provided by the disk braking mechanism will play a leading role. If the braking control system works normally in this stage, the anti-skid of the high-speed superconducting maglev train is considered during the braking process to meet the average deceleration requirement of the high-speed superconducting maglev train, but the anti-skid requirement has a higher priority than the average deceleration requirement; if the braking control system works abnormally in this stage, the anti-skid of the high-speed superconducting maglev train is not considered during the braking process, and the high-speed superconducting maglev train implements a constant disk braking force.

[0147] In a possible implementation manner, if the target braking condition is the vehicle dropping braking condition or the parking braking condition, the target braking mechanism is the skid braking mechanism.

[0148] When the superconductor installed on the vehicle suspension of the high-speed superconducting maglev train quenches, causing the vehicle suspension of the high-speed superconducting maglev train unable to float normally, it is necessary to control the high-speed superconducting maglev train to heat the superconductors of other non-quenched vehicle suspensions, so that all the superconductors of the vehicle suspensions are quenched, thereby dropping all the vehicle suspensions of the entire high-speed superconducting maglev train, and relying on the friction between the skids installed at the bottom of the vehicle suspension and the track to implement vehicle dropping braking.

[0149] It can be seen from the above technical solutions that the present application provides a braking control method for a high-speed superconducting maglev train. The method sets an electric braking mechanism, a skid braking mechanism, an air dynamic braking mechanism and a disk braking mechanism on the high-speed superconducting maglev train. When it is necessary to brake the high-speed superconducting maglev train, the state information of the high-speed superconducting maglev train is obtained, the target braking condition of the high-speed superconducting maglev train is determined according to the state information, and the target braking mechanism is determined from the electric braking mechanism, the skid braking mechanism, the air dynamic braking mechanism and the disk braking mechanism according to the target braking condition, and then the target braking mechanism is controlled to execute the braking task to achieve the braking of the high-speed superconducting maglev train. This method fills the blank of the braking scheme of the high-speed superconducting maglev train. By adding an air dynamic braking mechanism and a disk braking mechanism, it is realized that under different target braking conditions, a corresponding combination of the electric braking mechanism, the skid braking mechanism, the air dynamic braking mechanism and the disk braking mechanism is selected as the target braking mechanism to brake the high-speed superconducting maglev train, so as to meet the various braking condition requirements of the high-speed superconducting maglev train.

[0150] The embodiment of the present application provides a braking control device for a high-speed superconducting maglev train. Refer to Figure 8 as shown, the device includes:

[0151] An acquisition unit 801 for acquiring the status information of the high-speed superconducting maglev train;

[0152] A determination unit 802 for determining the target braking condition of the high-speed superconducting maglev train according to the status information;

[0153] The determination unit 802 is further configured to determine a target braking mechanism from an electric braking mechanism, a skid braking mechanism, an aerodynamic braking mechanism, and a disk braking mechanism according to the target braking condition;

[0154] A control unit 803 for controlling the target braking mechanism to perform a braking task to achieve braking of the high-speed superconducting maglev train.

[0155] Optionally, if the target braking condition is a normal start and acceleration condition, the target braking mechanism is the electric braking mechanism, the aerodynamic braking mechanism, and the disk braking mechanism, or the target braking mechanism is the electric braking mechanism and the aerodynamic braking mechanism.

[0156] Optionally, if the target braking condition is a service braking condition or a holding braking condition, the target braking mechanism is the electric braking mechanism and the disk braking mechanism.

[0157] Optionally, if the target braking condition is an emergency braking condition, the target braking mechanism is the electric braking mechanism, the aerodynamic braking mechanism, and the disk braking mechanism.

[0158] Optionally, the status information is the working state of the electric braking mechanism of the high-speed superconducting maglev train, and the determination unit is configured to:

[0159] If the working state of the electric braking mechanism indicates that the electric braking mechanism is in a target-level fault state, determine that the target braking condition is a safety braking condition.

[0160] Optionally, the control unit is configured to:

[0161] Acquire the traveling speed of the high-speed superconducting maglev train;

[0162] Determine the target braking mechanism from the electric braking mechanism, the skid braking mechanism, the aerodynamic braking mechanism, and the disk braking mechanism according to the traveling speed and the target braking condition.

[0163] Optionally, if the target braking condition is an emergency braking condition, the aerodynamic braking mechanism includes a folding aerodynamic braking mechanism and a vertical lifting aerodynamic braking mechanism, and the control unit is configured to:

[0164] If it is determined that the driving speed is in the process of decelerating from the first speed to the second speed, determine the vertical lifting aerodynamic braking mechanism and the electric braking mechanism as the target braking mechanisms;

[0165] If it is determined that the driving speed is in the process of decelerating from the second speed to the third speed, determine the vertical lifting aerodynamic braking mechanism, the folding aerodynamic braking mechanism and the electric braking mechanism as the target braking mechanisms;

[0166] If it is determined that the driving speed is in the process of decelerating from the third speed to the fourth speed, determine the aerodynamic braking mechanism and the electric braking mechanism as the target braking mechanisms;

[0167] If it is determined that the driving speed is in the process of decelerating from the fourth speed to the fifth speed, determine the aerodynamic braking mechanism, the electric braking mechanism and the disc braking mechanism as the target braking mechanisms.

[0168] Optionally, if the target braking condition is a safety braking condition, the aerodynamic braking mechanism includes a folding aerodynamic braking mechanism and a vertical lifting aerodynamic braking mechanism, and the control unit is configured to:

[0169] If it is determined that the driving speed is in the process of decelerating from the sixth speed to the seventh speed, determine the folding aerodynamic braking mechanism and the vertical lifting aerodynamic braking mechanism as the target braking mechanisms;

[0170] If it is determined that the driving speed is in the process of decelerating from the seventh speed to the eighth speed, determine the aerodynamic braking mechanism as the target braking mechanism;

[0171] If it is determined that the driving speed is in the process of decelerating from the eighth speed to the ninth speed, determine the aerodynamic braking mechanism and the disc braking mechanism as the target braking mechanisms.

[0172] Optionally, if the target braking condition is a car drop braking condition or a parking braking condition, the target braking mechanism is the skid braking mechanism.

[0173] As can be seen from the above technical solutions, an electric braking mechanism, a skid braking mechanism, an aerodynamic braking mechanism, and a disc braking mechanism are provided on a high-speed superconducting maglev train. When it is necessary to brake the high-speed superconducting maglev train, the state information of the high-speed superconducting maglev train is obtained, the target braking condition of the high-speed superconducting maglev train is determined according to the state information, and the target braking mechanism is determined from the electric braking mechanism, the skid braking mechanism, the aerodynamic braking mechanism, and the disc braking mechanism according to the target braking condition. Then, the target braking mechanism is controlled to execute the braking task to achieve the braking of the high-speed superconducting maglev train. This method fills the gap in the braking scheme of high-speed superconducting maglev trains. By adding an aerodynamic braking mechanism and a disc braking mechanism, it is possible to select a corresponding combination of the electric braking mechanism, the skid braking mechanism, the aerodynamic braking mechanism, and the disc braking mechanism as the target braking mechanism to brake the high-speed superconducting maglev train under different target braking conditions, so as to meet the various braking condition requirements of the high-speed superconducting maglev train.

[0174] Those of ordinary skill in the art can understand that all or part of the steps of implementing the above method embodiments can be completed by hardware related to program instructions. The foregoing program can be stored in a computer-readable storage medium. When the program is executed, it executes the steps including the above method embodiments; and the foregoing storage medium can be at least one of the following media: read-only memory (abbreviation: ROM), RAM, magnetic disk, or optical disc, etc., which can store program codes.

[0175] It should be noted that the various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the device and system embodiments, since they are basically similar to the method embodiments, the description is relatively simple. For the relevant parts, reference can be made to the partial description of the method embodiments. The device and system embodiments described above are only illustrative. The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art can understand and implement it without creative efforts.

[0176] As described above, it is only a specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present application should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A braking control method for a high-speed superconducting electromagnetic levitation train, characterized in that, The method includes: Obtaining the state information of the high-speed superconducting maglev train; Determining the target braking condition of the high-speed superconducting maglev train according to the state information; Determining a target braking mechanism from an electric braking mechanism, a skid braking mechanism, an aerodynamic braking mechanism, and a disc braking mechanism according to the target braking condition. The aerodynamic braking mechanism includes a folding aerodynamic braking mechanism and a vertical lifting aerodynamic braking mechanism. The high-speed superconducting maglev train includes multiple carriages. The aerodynamic braking mechanism is installed at a target position of the multiple carriages. The multiple carriages include a head carriage and non-head carriages. The folding aerodynamic braking mechanism is installed on the car body structure above the train suspension of the head carriage. The vertical lifting aerodynamic braking mechanism is installed on the end wall of the non-head carriage. The target position is the car body structure above the train suspension of the head carriage and the end wall of the non-head carriage; Wherein, if the target braking condition is an emergency braking condition: If it is determined that the running speed is in the process of decelerating from a first speed to a second speed, determine the vertical lifting aerodynamic braking mechanism and the electric braking mechanism as the target braking mechanisms; If it is determined that the running speed is in the process of decelerating from the second speed to a third speed, determine the vertical lifting aerodynamic braking mechanism, the folding aerodynamic braking mechanism, and the electric braking mechanism as the target braking mechanisms; If it is determined that the running speed is in the process of decelerating from the third speed to a fourth speed, determine the aerodynamic braking mechanism and the electric braking mechanism as the target braking mechanisms; If it is determined that the running speed is in the process of decelerating from the fourth speed to a fifth speed, determine the aerodynamic braking mechanism, the electric braking mechanism, and the disc braking mechanism as the target braking mechanisms; Controlling the target braking mechanism to perform a braking task to achieve braking of the high-speed superconducting maglev train.

2. The method according to claim 1, wherein If the target braking condition is a normal start and acceleration condition, the target braking mechanism is the electric braking mechanism, the aerodynamic braking mechanism, and the disc braking mechanism, or the target braking mechanism is the electric braking mechanism and the aerodynamic braking mechanism.

3. The method according to claim 1, wherein If the target braking condition is a service braking condition or a holding braking condition, the target braking mechanism is the electric braking mechanism and the disc braking mechanism.

4. The method according to claim 1, characterized in that, If the target braking condition is an emergency braking condition, the target braking mechanism is the electric braking mechanism, the aerodynamic braking mechanism, and the disc braking mechanism.

5. The method according to claim 1, characterized in that, The state information is the working state of the electric braking mechanism of the high-speed superconducting maglev train. Determining the target braking condition of the high-speed superconducting maglev train according to the state information includes: If the working state of the electric braking mechanism indicates that the electric braking mechanism is in a target-level fault state, determine the target braking condition as a safety braking condition.

6. The method according to claim 4 or 5, characterized in that, Determining a target braking mechanism from an electric braking mechanism, a skid braking mechanism, an aerodynamic braking mechanism, and a disc braking mechanism according to the target braking condition includes: Obtain the running speed of the high-speed superconducting maglev train; Determine the target braking mechanism from the electric braking mechanism, the skid braking mechanism, the aerodynamic braking mechanism, and the disc braking mechanism according to the running speed and the target braking condition.

7. The method according to claim 6, wherein If the target braking condition is a safety braking condition, the aerodynamic braking mechanism includes a folding aerodynamic braking mechanism and a vertical lifting aerodynamic braking mechanism. The step of determining the target braking mechanism from the electric braking mechanism, the skid braking mechanism, the aerodynamic braking mechanism, and the disc braking mechanism according to the running speed and the target braking condition includes: If it is determined that the running speed is in the process of decelerating from the sixth speed to the seventh speed, determine the folding aerodynamic braking mechanism and the vertical lifting aerodynamic braking mechanism as the target braking mechanism; If it is determined that the running speed is in the process of decelerating from the seventh speed to the eighth speed, determine the aerodynamic braking mechanism as the target braking mechanism; If it is determined that the running speed is in the process of decelerating from the eighth speed to the ninth speed, determine the aerodynamic braking mechanism and the disc braking mechanism as the target braking mechanism.

8. The method according to claim 1, characterized in that If the target braking condition is a car body lowering braking condition or a parking braking condition, the target braking mechanism is the skid braking mechanism.

9. The method according to claim 1, wherein the braking control method for a high-speed superconducting electromagnetic levitation train is applied to a braking control device for a high-speed superconducting electromagnetic levitation train, and is characterized in that, The device includes: An acquisition unit for acquiring the state information of the high-speed superconducting maglev train; A determination unit for determining the target braking condition of the high-speed superconducting maglev train according to the state information; The determination unit is further configured to determine the target braking mechanism from the electric braking mechanism, the skid braking mechanism, the aerodynamic braking mechanism, and the disc braking mechanism according to the target braking condition, and the aerodynamic braking mechanism includes a folding aerodynamic braking mechanism and a vertical lifting aerodynamic braking mechanism; A control unit for controlling the target braking mechanism to perform a braking task to achieve braking of the high-speed superconducting maglev train.

10. The braking control method of the high-speed superconducting maglev train according to claim 1 is applied to a high-speed superconducting maglev train, and is characterized in that, The high-speed superconducting maglev train includes multiple carriages, running wheels, a braking device, and a braking control unit. The braking device includes an electric braking mechanism, a skid braking mechanism, an aerodynamic braking mechanism, and a disc braking mechanism. The aerodynamic braking mechanism includes a folding aerodynamic braking mechanism and a vertical lifting aerodynamic braking mechanism: The skid braking mechanism is installed at the bottom of the train suspension; The aerodynamic braking mechanism is installed at the target position of the multiple carriages; The disc braking mechanism is installed inside the running wheels of the train suspension; The braking control unit is configured to select the target braking mechanism from the electric braking mechanism, the skid braking mechanism, the aerodynamic braking mechanism, and the disc braking mechanism according to the target braking condition to achieve braking of the high-speed superconducting maglev train.

11. The method according to claim 10, characterized in that, The vertical lifting aerodynamic braking mechanism includes an aerodynamic braking wing plate and a cylinder inside the vertical lifting aerodynamic braking mechanism. The vertical lifting aerodynamic braking mechanism is used to drive the cylinder by compressed air to push the aerodynamic braking wing plate to rise upward.

12. The method according to claim 10, wherein The folding aerodynamic braking mechanism includes an aerodynamic braking wing plate and an oil cylinder inside the folding aerodynamic braking mechanism. The folding aerodynamic braking mechanism is used to drive the oil cylinder by pressure oil to push the aerodynamic braking wing plate to open in the vertical direction; The vertical lifting aerodynamic braking mechanism includes an aerodynamic braking wing plate and a cylinder inside the vertical lifting aerodynamic braking mechanism, which is used to drive the cylinder by compressed air to push the aerodynamic braking wing plate to rise upward.

13. The method according to any one of claims 10 to 12, characterized in that The running wheel is a rubber wheel.

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