CN113911164A - Brake control method and device for high-speed superconducting electromagnetic levitation train and train - Google Patents

Brake control method and device for high-speed superconducting electromagnetic levitation train and train Download PDF

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Publication number
CN113911164A
CN113911164A CN202111398882.8A CN202111398882A CN113911164A CN 113911164 A CN113911164 A CN 113911164A CN 202111398882 A CN202111398882 A CN 202111398882A CN 113911164 A CN113911164 A CN 113911164A
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China
Prior art keywords
braking
braking mechanism
aerodynamic
speed
target
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CN202111398882.8A
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Chinese (zh)
Inventor
于青松
张显锋
刘明东
郑闯
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CRRC Changchun Railway Vehicles Co Ltd
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CRRC Changchun Railway Vehicles Co Ltd
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Priority to CN202111398882.8A priority Critical patent/CN113911164A/en
Priority to PCT/CN2021/134787 priority patent/WO2023087400A1/en
Publication of CN113911164A publication Critical patent/CN113911164A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61H—BRAKES OR OTHER RETARDING DEVICES SPECIALLY ADAPTED FOR RAIL VEHICLES; ARRANGEMENT OR DISPOSITION THEREOF IN RAIL VEHICLES
    • B61H11/00—Applications or arrangements of braking or retarding apparatus not otherwise provided for; Combinations of apparatus of different kinds or types
    • B61H11/14—Combinations of different types of brakes, e.g. brake blocks acting on wheel-rim combined with disc brakes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L13/00—Electric propulsion for monorail vehicles, suspension vehicles or rack railways; Magnetic suspension or levitation for vehicles
    • B60L13/04—Magnetic suspension or levitation for vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/74—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61H—BRAKES OR OTHER RETARDING DEVICES SPECIALLY ADAPTED FOR RAIL VEHICLES; ARRANGEMENT OR DISPOSITION THEREOF IN RAIL VEHICLES
    • B61H11/00—Applications or arrangements of braking or retarding apparatus not otherwise provided for; Combinations of apparatus of different kinds or types
    • B61H11/06—Applications or arrangements of braking or retarding apparatus not otherwise provided for; Combinations of apparatus of different kinds or types of hydrostatic, hydrodynamic, or aerodynamic brakes
    • B61H11/10—Aerodynamic brakes with control flaps, e.g. spoilers, attached to the vehicles

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Transportation (AREA)
  • Fluid Mechanics (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Control Of Vehicles With Linear Motors And Vehicles That Are Magnetically Levitated (AREA)

Abstract

The application discloses a brake control method and device of a high-speed superconducting electromagnetic levitation train and the train, wherein the train is provided with an electric brake mechanism, a skid brake mechanism, an aerodynamic brake mechanism and a wheel disc brake mechanism, when brake control needs to be implemented, the target brake working condition of the high-speed superconducting electromagnetic levitation train is determined according to acquired state information, the target brake mechanism is determined from the electric brake mechanism, the skid brake mechanism, the aerodynamic brake mechanism and the wheel disc brake mechanism according to the target brake working condition, and then the target brake mechanism is controlled to execute brake tasks so as to realize braking of the high-speed superconducting electromagnetic levitation train. By adding the aerodynamic braking mechanism and the wheel disc braking mechanism, the corresponding combination of the electric braking mechanism, the skid braking mechanism, the aerodynamic braking mechanism and the wheel disc braking mechanism is selected as the target braking mechanism to implement braking under different target braking conditions, and the requirements of various braking conditions of the high-speed superconducting electric magnetic suspension train are met.

Description

Brake control method and device for high-speed superconducting electromagnetic levitation train and train
Technical Field
The application relates to the field of high-speed superconducting electric maglev trains, in particular to a brake control method and device of a high-speed superconducting electric maglev train and the train.
Background
The technical characteristics of the high-speed superconducting electric-magnetic levitation train braking system are different from those of the traditional motor train unit, urban rail transit train and electromagnetic levitation train. The braking system of the motor train unit and the urban rail transit train is mainly used for braking by utilizing the adhesion force between wheel rails, and the few braking systems adopt eddy current braking and magnetic rail braking; the high-speed electromagnetic levitation train can realize zero-speed in-situ levitation, and the whole train is braked by electric braking, eddy current braking and skid braking; for the high-speed superconducting electric magnetic levitation train, the high-speed superconducting electric magnetic levitation train can enter a levitation state only after being accelerated to 150km/h by virtue of the running wheels in the low-speed acceleration stage, and the high-speed superconducting electric magnetic levitation train needs to be supported by the running wheels to run after being decelerated to 150km/h, namely the train does not have a levitation function in the low-speed stage.
Aiming at the characteristic of the high-speed superconducting electromagnetic levitation train, at present, no mature scheme for solving the problem of the braking system of the high-speed superconducting electromagnetic levitation train exists in China, and the current technology is in a blank stage.
Disclosure of Invention
In order to solve the technical problems, the application provides a brake control method and device for a high-speed superconducting electric magnetic suspension train and the train, fills the blank of a brake scheme of the high-speed superconducting electric magnetic suspension train, and meets various brake working condition requirements of the high-speed superconducting electric magnetic suspension train.
The embodiment of the application discloses the following technical scheme:
in a first aspect, an embodiment of the present application provides a brake control method for a high-speed superconducting electric magnetic levitation train, where the method includes:
acquiring state information of the high-speed superconducting electric magnetic levitation train;
determining a target braking condition of the high-speed superconducting electromagnetic levitation 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 wheel disc braking mechanism according to the target braking working condition;
and controlling the target brake mechanism to execute a braking task so as to realize the braking of the high-speed superconducting electromagnetic levitation train.
Optionally, if the target braking condition is a normal starting acceleration condition, the target braking mechanism is the electric braking mechanism, the aerodynamic braking mechanism and the wheel disc braking mechanism, or the target braking mechanism is the electric braking mechanism and the aerodynamic braking mechanism.
Optionally, if the target braking condition is a service braking condition or a maintenance braking condition, the target braking mechanism is the electric braking mechanism and the wheel disc braking mechanism.
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 wheel disc braking mechanism.
Optionally, the determining the target braking condition of the high-speed superconducting electromagnetic levitation train according to the state information includes:
and if the working state of the electric braking mechanism indicates that the electric braking mechanism is in a fault state of a target level, determining that the target braking working condition is a safe braking working condition.
Optionally, the 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:
acquiring the running speed of the high-speed superconducting electric magnetic levitation train;
and determining the target braking mechanism from the electric braking mechanism, the skid braking mechanism, the aerodynamic braking mechanism and the wheel disc braking mechanism according to the running speed and the target braking condition.
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 target braking mechanism is determined from the electric braking mechanism, the skid braking mechanism, the aerodynamic braking mechanism and the wheel disc braking mechanism according to the running speed and the target braking condition, and includes:
if the running speed is determined to be in the process of decelerating from the first speed to the second speed, determining the vertical lifting aerodynamic braking mechanism and the electric braking mechanism as the target braking mechanism;
if the running speed is determined to be in the process of decelerating from the second speed to a third speed, determining that the vertical lifting aerodynamic braking mechanism, the folding aerodynamic braking mechanism and the electric braking mechanism are the target braking mechanisms;
if the running speed is determined to be in the process of decelerating from the third speed to the fourth speed, determining the aerodynamic braking mechanism and the electric braking mechanism as the target braking mechanism;
and if the running speed is determined to be in the process of decelerating from the fourth speed to the fifth speed, determining the aerodynamic braking mechanism, the electric braking mechanism and the wheel disc braking mechanism as the target braking mechanism.
Optionally, if the target braking condition is a safe braking condition, the aerodynamic braking mechanism includes a folding aerodynamic braking mechanism and a vertical lifting aerodynamic braking mechanism, and the target braking mechanism is determined from the electric braking mechanism, the skid braking mechanism, the aerodynamic braking mechanism and the wheel disc braking mechanism according to the running speed and the target braking condition, and includes:
if the running speed is determined to be in the process of decelerating from a sixth speed to a seventh speed, determining the folding type aerodynamic braking mechanism and the vertical lifting aerodynamic braking mechanism as the target braking mechanism;
if the running speed is determined to be in the process of decelerating from the seventh speed to the eighth speed, determining the aerodynamic braking mechanism as the target braking mechanism;
and if the running speed is determined to be in the process of decelerating from the eighth speed to the ninth speed, determining the aerodynamic braking mechanism and the wheel disc braking mechanism as the target braking mechanism.
Optionally, if the target braking condition is a falling braking condition or a parking braking condition, the target braking mechanism is the skid braking mechanism.
In a second aspect, the present application provides a brake control apparatus for a high-speed superconducting electric magnetic levitation train, the apparatus including:
the acquisition unit is used for acquiring the state information of the high-speed superconducting electromagnetic levitation train;
the determining unit is used for determining the target braking condition of the high-speed superconducting electromagnetic levitation train according to the state information;
the determining unit is also used for determining a target braking mechanism from an electric braking mechanism, a skid braking mechanism, an aerodynamic braking mechanism and a wheel disc braking mechanism according to the target braking working condition;
and the control unit is used for controlling the target brake mechanism to execute a braking task so as to realize the braking of the high-speed superconducting electric-magnetic levitation train.
Optionally, if the target braking condition is a normal starting acceleration condition, the target braking mechanism is the electric braking mechanism, the aerodynamic braking mechanism and the wheel disc braking mechanism, or the target braking mechanism is the electric braking mechanism and the aerodynamic braking mechanism.
Optionally, if the target braking condition is a service braking condition or a maintenance braking condition, the target braking mechanism is the electric braking mechanism and the wheel disc braking mechanism.
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 wheel disc braking mechanism.
Optionally, the state information is a working state of an electric brake mechanism of the high-speed superconducting electromagnetic levitation train, and the determining unit is configured to:
and if the working state of the electric braking mechanism indicates that the electric braking mechanism is in a fault state of a target level, determining that the target braking working condition is a safe braking working condition.
Optionally, the control unit is configured to:
acquiring the running speed of the high-speed superconducting electric magnetic levitation train;
and determining the target braking mechanism from the electric braking mechanism, the skid braking mechanism, the aerodynamic braking mechanism and the wheel disc braking mechanism according to the running speed and the target braking condition.
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:
if the running speed is determined to be in the process of decelerating from the first speed to the second speed, determining the vertical lifting aerodynamic braking mechanism and the electric braking mechanism as the target braking mechanism;
if the running speed is determined to be in the process of decelerating from the second speed to a third speed, determining that the vertical lifting aerodynamic braking mechanism, the folding aerodynamic braking mechanism and the electric braking mechanism are the target braking mechanisms;
if the running speed is determined to be in the process of decelerating from the third speed to the fourth speed, determining the aerodynamic braking mechanism and the electric braking mechanism as the target braking mechanism;
and if the running speed is determined to be in the process of decelerating from the fourth speed to the fifth speed, determining the aerodynamic braking mechanism, the electric braking mechanism and the wheel disc braking mechanism as the target braking mechanism.
Optionally, if the target braking condition is a safe 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:
if the running speed is determined to be in the process of decelerating from a sixth speed to a seventh speed, determining the folding type aerodynamic braking mechanism and the vertical lifting aerodynamic braking mechanism as the target braking mechanism;
if the running speed is determined to be in the process of decelerating from the seventh speed to the eighth speed, determining the aerodynamic braking mechanism as the target braking mechanism;
and if the running speed is determined to be in the process of decelerating from the eighth speed to the ninth speed, determining the aerodynamic braking mechanism and the wheel disc braking mechanism as the target braking mechanism.
Optionally, if the target braking condition is a falling braking condition or a parking braking condition, the target braking mechanism is the skid braking mechanism.
In a third aspect, an embodiment of the present application provides a high-speed superconducting electromagnetic levitation train, where the high-speed superconducting electromagnetic levitation train includes a plurality of carriages, traveling wheels, a braking device, and a braking control unit, and the braking device includes an electric braking mechanism, a skid braking mechanism, an aerodynamic braking mechanism, and a wheel disc braking mechanism:
the skid braking mechanism is arranged at the bottom of the train suspension frame;
the aerodynamic braking mechanism is arranged at the target position of the multiple carriages;
the wheel disc brake mechanism is arranged on the inner side of a traveling wheel of the train suspension frame;
the brake control unit is configured to perform the method of any of the first aspect.
Optionally, the aerodynamic braking mechanism comprises a vertical lift aerodynamic braking mechanism, and the target position is an end wall of each of the plurality of carriages.
Optionally, the vertical lift aerodynamic braking mechanism includes an aerodynamic braking wing plate and an air cylinder inside the vertical lift aerodynamic braking mechanism, and the vertical lift aerodynamic braking mechanism is used for driving the air cylinder with pressure air to push the aerodynamic braking wing plate to rise upwards.
Optionally, the multiple carriages include a first carriage and a second carriage, the aerodynamic braking mechanism includes a folding aerodynamic braking mechanism and a vertical lifting aerodynamic braking mechanism, the folding aerodynamic braking mechanism is mounted on a vehicle body structure above the train suspension of the first carriage, the vertical lifting aerodynamic braking mechanism is mounted on an end wall of the second carriage, and the target position is on the vehicle body structure above the train suspension of the first carriage and on the end wall of the second carriage.
Optionally, the folding type aerodynamic braking mechanism comprises an aerodynamic braking wing plate and an oil cylinder inside the folding type aerodynamic braking mechanism, and the folding type aerodynamic braking mechanism is used for driving the oil cylinder by pressure oil to push the aerodynamic braking wing plate to be folded in the vertical direction;
the vertical lifting aerodynamic braking mechanism comprises an aerodynamic braking wing plate and an air cylinder inside the vertical lifting aerodynamic braking mechanism, and is used for driving the air cylinder by pressure air to push the aerodynamic braking wing plate to rise upwards.
Optionally, the walking wheels are rubber wheels.
According to the technical scheme, the method comprises the steps that an electric braking mechanism, a skid braking mechanism, an aerodynamic braking mechanism and a wheel disc braking mechanism are arranged on the high-speed superconducting electromagnetic levitation train, when the high-speed superconducting electromagnetic levitation train needs to be braked, state information of the high-speed superconducting electromagnetic levitation train is obtained, a target braking condition of the high-speed superconducting electromagnetic levitation 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 wheel disc braking mechanism according to the target braking condition, and the target braking mechanism is controlled to execute a braking task to brake the high-speed superconducting electromagnetic levitation train. The method fills the blank of the braking scheme of the high-speed superconducting electric-magnetic levitation train, realizes braking of the high-speed superconducting electric-magnetic levitation train by selecting the corresponding combination of the electric braking mechanism, the skid braking mechanism, the aerodynamic braking mechanism and the wheel disc braking mechanism as the target braking mechanism under different target braking conditions by adding the aerodynamic braking mechanism and the wheel disc braking mechanism, and thus meets various braking condition requirements of the high-speed superconducting electric-magnetic levitation train.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a structural diagram of a high-speed superconducting electromagnetic levitation train provided in an embodiment of the present application;
FIG. 2 is a schematic view of an arrangement of an aerodynamic braking mechanism according to an embodiment of the present application;
fig. 3 is a flowchart of a braking control method for a high-speed superconducting electric magnetic levitation train according to an embodiment of the present application;
FIG. 4 is a schematic diagram of a control curve under a service braking condition according to an embodiment of the present disclosure;
FIG. 5 is a schematic diagram of a control curve under an emergency braking condition according to an embodiment of the present disclosure;
FIG. 6 is a schematic diagram of a control curve under a safety braking condition according to an embodiment of the present disclosure;
FIG. 7 is a schematic diagram of a control curve under another safe braking condition according to an embodiment of the present application;
fig. 8 is a structural diagram of a brake control device of a high-speed superconducting electric magnetic levitation train according to an embodiment of the present application.
Detailed Description
Embodiments of the present application are described below with reference to the accompanying drawings.
A mature scheme for solving the problem of a high-speed superconducting electromagnetic levitation train braking system is not available in China, and the current technology is in a blank stage.
Therefore, the application provides a brake control method and device for a high-speed superconducting electric magnetic suspension train and the train, fills the blank of the brake scheme of the high-speed superconducting electric magnetic suspension train, and meets various brake working condition requirements of the high-speed superconducting electric magnetic suspension train.
Referring to fig. 1, fig. 1 shows a schematic diagram of a high-speed superconducting electrodynamic-magnetic levitation train. The high-speed superconducting electromagnetic levitation train comprises a plurality of carriages 101, running wheels 102, a braking device 103 and a braking control unit 104, wherein the braking device 103 comprises an electric braking mechanism 1031, a skid braking mechanism 1032, an aerodynamic braking mechanism 1033 and a wheel disc braking mechanism 1034.
The electric brake mechanism 1031, the skid brake mechanism 1032, the aerodynamic brake mechanism 1033 and the wheel disc brake mechanism 1034 included in the brake device 103 are distributed at different positions of the high-speed superconducting electromagnetic levitation train.
As shown in fig. 1, a skid brake mechanism 1032 is mounted to the bottom of the train suspension to apply braking by virtue of the friction of the skid brake mechanism 1032 with the track. Fig. 1 merely shows an installation position of the skid braking mechanism 1032 by way of example, as long as the installation position of the skid braking mechanism 1032 is ensured to be located at the bottom of the train suspension frame, and can rub against the track to provide friction force to implement braking, and the specific installation position is not limited.
The aerodynamic braking mechanism 1033 is arranged at the target position of the multi-section carriage; the wheel disc brake 1034 is mounted inside the road wheels of the train suspension, as shown in the rectangular box with a dashed line in fig. 1, which enlarges the road wheels to show the mounting relationship between the road wheels and the wheel disc brake 1034. A Brake Control Unit (BCU) 1035 is a device for performing brake Control on the high-speed superconducting electric-magnetic levitation train, and is configured to determine a target brake condition, so as to determine a target brake mechanism from the electric brake mechanism 1031, the skid brake mechanism 1032, the aerodynamic brake mechanism 1033, and the wheel disc brake mechanism 1034 according to the target brake condition, and further Control the target brake mechanism to perform a brake task, so as to implement Braking of the high-speed superconducting electric-magnetic levitation train.
Different braking mechanisms included in the braking device 103 are used for implementing different braking modes on the high-speed superconducting electromagnetic levitation train, the electric braking mechanism 1031 is used for implementing electric braking on the high-speed superconducting electromagnetic levitation train, the skid braking mechanism 1032 is used for implementing skid braking on the high-speed superconducting electromagnetic levitation train, the aerodynamic braking mechanism 1033 is used for implementing aerodynamic braking on the high-speed superconducting electromagnetic levitation train, and the wheel disc braking mechanism 1034 is used for implementing wheel disc braking on the high-speed superconducting electromagnetic levitation train. The electric brake and the aerodynamic brake belong to non-adhesion brake, and the wheel disc brake and the skid brake belong to adhesion brake. The four braking modes are described in detail below.
1) Electric braking: the regenerative braking and the resistance braking are both in the electric braking mode of the high-speed superconducting electromagnetic levitation train, the electric braking mechanism is used, the electric braking mechanism is realized by converting the electric state of the linear motor into the power generation state through adjusting the control strategy of the traction control system on the inverter module, when the linear motor is in the power generation state, the ground coil applies a braking force opposite to the running direction of the high-speed superconducting electromagnetic levitation train on the superconducting magnet to force the high-speed superconducting electromagnetic levitation train to decelerate, and meanwhile, the kinetic energy of the high-speed superconducting electromagnetic levitation train is converted into electric energy to be fed back to a power supply side.
2) Aerodynamic braking: a method of effecting braking deceleration by means of an aerodynamic brake flap included in an aerodynamic brake mechanism mounted on a high speed superconducting electro-magnetic levitation train. In one possible implementation, the aerodynamic braking mechanism of the high-speed superconducting electromagnetic levitation train includes both a fold-over aerodynamic braking mechanism and a vertical lift aerodynamic braking mechanism, and the arrangement of the aerodynamic braking mechanism is shown in fig. 2.
Folding type aerodynamic braking mechanism: the multi-section carriages of the high-speed superconducting electromagnetic levitation train comprise a first carriage and a non-first carriage, and the folding type aerodynamic braking mechanism is installed on a train body structure above a train suspension frame of the first carriage (see the mark 1 in figure 2). The oil cylinder arranged in the mechanism is driven by pressure oil to push the whole aerodynamic braking wing plate to be opened towards the vertical direction. The folding type aerodynamic braking mechanism comprises an aerodynamic braking wing plate and an oil cylinder inside the folding type aerodynamic braking mechanism, and the folding type aerodynamic braking mechanism can drive the oil cylinder by means of pressure oil to push the aerodynamic braking wing plate to be folded in the vertical direction.
Vertical lift aerodynamic braking mechanism: the vertical lift aerodynamic braking mechanism is mounted on the end wall of the non-head car (see 2 in fig. 2). The vertical lifting aerodynamic braking mechanism comprises an aerodynamic braking wing plate and an air cylinder inside the vertical lifting aerodynamic braking mechanism, and the vertical lifting aerodynamic braking mechanism can drive the air cylinder by means of pressure air to push the aerodynamic braking wing plate to rise upwards.
When the aerodynamic braking mechanism comprises a folding aerodynamic braking mechanism and a vertical lifting aerodynamic braking mechanism, the target positions are on the train body structure above the train suspension frame of the first train carriage and on the end wall of the non-first train carriage.
In some cases, the aerodynamic brake mechanism may comprise only a vertical lift aerodynamic brake mechanism, where the target location is on the end wall of each of the plurality of cars. The vertical lifting aerodynamic braking mechanism comprises an aerodynamic braking wing plate and an air cylinder inside the vertical lifting aerodynamic braking mechanism, and the vertical lifting aerodynamic braking mechanism is used for driving the air cylinder by pressure air to push the aerodynamic braking wing plate to rise upwards.
In the case where the aerodynamic brake mechanism includes only the vertical lift aerodynamic brake mechanism, the structure and the driving system of the aerodynamic brake mechanism can be simplified.
Under the two conditions, the control of the aerodynamic braking mechanism can adopt different speeds to correspondingly open different numbers of vertical lifting aerodynamic braking mechanisms to realize the matching of the speed and the braking deceleration.
3) Disc braking: the wheel disc brake mechanism is arranged on the inner side of a traveling wheel of the train suspension frame, and braking and relieving are implemented by pressure oil.
It will be appreciated that in the embodiments of the present application, the running wheels may be rubber wheels. The traveling wheels of the high-speed superconducting electromagnetic levitation train adopt a rubber wheel structure, and compared with a wheel rail structure of a traditional railway, the traveling wheels have larger adhesive force and smaller influence of a wet sliding rail surface compared with the adhesion coefficient of a cement road surface, so that the braking force exerted by a wheel disc brake is larger and more stable.
4) Skid braking: the skid braking mechanism is arranged at the bottom of the train suspension frame and brakes by means of friction force between the skid and the track. The skid brake is used for implementing the open of the falling brake and the parking brake working condition when the train suspension frame descends when the superconductor is quenched.
Based on the braking mode of the high-speed superconducting electromagnetic levitation train, the high-speed superconducting electromagnetic levitation train can have multiple braking working conditions, and different braking working conditions can require at least one braking mode to implement braking.
The common braking working condition can comprise a normal starting acceleration working condition, a common braking working condition, a holding braking working condition, an emergency braking working condition, a safe braking working condition, a parking braking working condition and a falling braking working condition, and the braking force can be adjusted according to the load.
Normal start-up acceleration regime: with the continuous acceleration of the high-speed superconducting electromagnetic levitation train, the hybrid braking mode of electric braking, aerodynamic braking and disc braking can be adopted firstly, and then the hybrid braking mode of electric braking and aerodynamic braking is adopted.
Service braking condition: the electric brake and the wheel disc brake are combined, the electric brake is preferentially used, and the electric brake and the wheel disc brake can be stably switched when being matched. The brake system should have an anti-skid control function to make full use of the adhesion.
Under the working condition of service braking, the braking system can adjust the empty and heavy vehicles according to the pressure of the air spring so as to ensure that the high-speed superconducting electric magnetic suspension train has the same braking deceleration requirement under different loads.
Under the working condition of common braking, the electric braking and the wheel disc braking are coordinated and matched in real time. In which electric braking is used as much as possible on the principle that electric braking takes precedence. After the landing gear is lowered, the high-speed superconducting electromagnetic levitation train is supported by the traveling wheels, when the electric brake cannot meet the brake force required by the brake instruction, the insufficient brake force is supplemented by the wheel disc brake, and the sum of the electric brake force and the wheel disc brake force can meet the brake deceleration required by the brake instruction. The whole vehicle Braking force calculation is completed by a BCU (Electronic Braking Control Unit, EBCU), an Electronic Braking Control Unit (EBCU) sends a load signal acquired by air spring pressure calculation to the BCU, the BCU calculates the whole vehicle Braking force according to the current load and Braking instruction, a traction Control Unit (DCU) feeds back the electric Braking force which can be exerted actually to the BCU, and the BCU calculates the needed supplementary wheel disc Braking force according to the current exerted electric Braking force and the whole vehicle Braking force and sends the wheel disc Braking force to the EBCU. When the electric braking force can meet the braking force required by the full-train high-speed superconducting electromagnetic levitation train, the high-speed superconducting electromagnetic levitation train does not supplement the wheel disc brake; when the total electric braking force can not meet the braking force required by the high-speed superconducting electric magnetic suspension train, the required supplementary wheel disc braking force is the difference value between the braking force required by the high-speed superconducting electric magnetic suspension train and the total electric braking force, the difference value is preferentially and evenly distributed on each suspension bracket to realize wheel disc braking compensation, and the braking system has an anti-skidding control function so as to fully utilize the adhesive force between the traveling wheels and the rail surface. Under the working condition of common braking, two modes of hard line transmission and network transmission are available, the high-speed superconducting electromagnetic levitation train takes network signals as main signals, and the hard line signals are used as backup signals.
Keeping the braking condition: the braking device is used for braking the high-speed superconducting electromagnetic levitation train after the high-speed superconducting electromagnetic levitation train stops, and the high-speed superconducting electromagnetic levitation train is braked by the wheel disc braking mechanism arranged on the traveling wheels so as to keep the high-speed superconducting electromagnetic levitation train in a stopped state continuously. Ensuring that the high-speed superconducting electric magnetic suspension train with the overload cannot slip on the maximum slope. And after the traction force of the high-speed superconducting electric-magnetic levitation train overcomes the maintaining braking force, the maintaining braking is relieved.
The brake control unit can keep the high-speed superconducting electromagnetic levitation train stationary when stopping on the slope by the brake control function or the slope starting function, and prevent the high-speed superconducting electromagnetic levitation train from slipping back when starting on the slope.
Under normal conditions, the EBCU applies the holding brake according to the holding brake command issued by the BCU. The wheel brake mechanism will apply a wheel brake sufficient to hold the high speed superconducting electromagnetic levitation train stationary on the grade.
Emergency braking condition: under the working condition of emergency braking, electric braking, air power braking and hydraulic wheel disc braking can be coordinated and completed. In an emergency, the windward projection area is expanded by lifting the aerodynamic braking wing plate, meanwhile, the electric brake is applied to meet the requirement of braking deceleration, the undercarriage starts to put down after the high-speed superconducting electromagnetic levitation train decelerates to 200km/h, and the wheel disc braking mechanism supplements the insufficient part of the braking force after the undercarriage is completely put down.
Under the emergency braking working condition, real-time constant deceleration control can be adopted, the BCU carries out braking management of the whole vehicle, and coordination of electric braking, aerodynamic braking and wheel disc braking are carried out.
The emergency brake is a brake mode in which electric brake, aerodynamic brake and disc brake are applied in coordination and directly controlled by an emergency safety loop train line, and the load compensation of the emergency brake is adjusted according to the acquired air spring pressure. After the emergency braking occurs, the braking is not allowed to be relieved before the high-speed superconducting electric magnetic suspension train completely stops. Any of the following conditions may result in the application of emergency braking:
striking an emergency brake button;
separating the train;
hydraulic underpressure;
the train emergency braking electric loop is interrupted or loses power;
the BCU sends out an emergency braking instruction
Requirements for emergency braking implementation:
after the emergency braking instruction is sent out, the emergency braking instruction cannot be removed, and the train must be decelerated until the train stops;
no matter what reason triggers the emergency braking, the high-speed superconducting electric magnetic suspension train must implement the braking action with the deceleration of the emergency braking;
when the emergency braking action is used, the braking of the high-speed superconducting electric-magnetic levitation train is not limited by the longitudinal impact rate of the high-speed superconducting electric-magnetic levitation train;
in the emergency braking process, the high-speed superconducting electromagnetic levitation train emergency braking electric loop loses power;
after the emergency braking instruction is sent out, the braking force is shared by electric braking, aerodynamic braking and wheel disc braking.
Under the working condition of emergency braking, two modes of hard line transmission and network transmission are available, the high-speed superconducting electromagnetic levitation train takes network signals as main signals, and the hard line signals are used as backup signals.
The safe braking condition is as follows: after the electric brake has a fault of a target level, the high-speed superconducting electromagnetic levitation train completes safe braking through coordination of aerodynamic braking and disk braking. Under the working condition of safe braking, real-time deceleration control is adopted, the BCU carries out whole vehicle braking management, the coordination and coordination of aerodynamic braking and wheel disc braking are carried out, and the wheel disc braking is required to carry out antiskid control and load compensation. Under the working condition of safety braking, two modes of hard line transmission and network transmission are available, the high-speed superconducting electromagnetic levitation train takes network signals as main signals, and the hard line signals are used as backup signals.
Generally, the electric brake fault is divided into a 3-level fault mode, and an electric brake 1-level fault: the electric brake failure is not more than 10%; electric brake level 2 fault: the electric brake fails by 10 to 30 percent; electric brake class 3 fault: the electric brake fails more than 30%. When the electric brake of the high-speed superconducting electric magnetic suspension train is in a grade 1 fault, the train adopts a speed reduction running mode, when the electric brake of the high-speed superconducting electric magnetic suspension train is in a grade 2 fault, the high-speed superconducting electric magnetic suspension train performs braking parking by a braking mode under a common braking working condition, and when the electric brake of the high-speed superconducting electric magnetic suspension train is in a grade 3 fault, the safety brake is started. At this time, the target level is 3 levels.
Parking brake working condition: when the high-speed superconductive electric magnetic suspension train needs to be parked for a long time, the skid is adopted to brake to implement parking brake. The friction force is generated by the contact of the skid and the rail surface, so that the requirement of safe parking on the maximum wind speed and the maximum ramp under the condition of overload of the train can be met.
The falling brake condition is as follows: when the superconductor is quenched and the landing gear can not land normally under the extreme working condition, the skid mounted at the bottom of the train suspension frame is adopted to brake to implement braking.
Next, a brake control method of the high-speed superconducting electric magnetic levitation train will be described based on the high-speed superconducting electric magnetic levitation train provided as described above. Referring to fig. 3, the method includes:
s301, acquiring the state information of the high-speed superconducting electric magnetic levitation train.
S302, determining the target braking condition of the high-speed superconducting electromagnetic levitation train according to the state information.
And S303, determining a target braking mechanism from the electric braking mechanism, the skid braking mechanism, the aerodynamic braking mechanism and the wheel disc braking mechanism according to the target braking working condition.
S304, controlling the target brake mechanism to execute a brake task so as to realize the brake of the high-speed superconducting electric-magnetic levitation train.
In one possible implementation, if the target braking condition is a normal start acceleration condition, the target braking mechanism is an electric braking mechanism, an aerodynamic braking mechanism and a disc braking mechanism, or the target braking mechanism is an electric braking mechanism and an aerodynamic braking mechanism.
The high-speed superconducting electric magnetic levitation train is in a static state, the undercarriage is put down, the whole train is supported by using the travelling wheels arranged on the undercarriage, the travelling of the high-speed superconducting electric magnetic levitation train is carried out by depending on the travelling wheels in the acceleration process of accelerating the speed of the high-speed superconducting electric magnetic levitation train from 0 to 150km/h, the conditions of implementing electric braking, aerodynamic braking and wheel disc braking are met at the stage, and the target braking mechanism is an electric braking mechanism, an aerodynamic braking mechanism and a wheel disc braking mechanism at the moment; the undercarriage is retracted from 150km/h when the speed of the high-speed superconducting electric magnetic suspension train reaches 180km/h, the high-speed superconducting electric magnetic suspension train enters a suspension state, namely, in the acceleration process of the high-speed superconducting electric magnetic suspension train, the conditions of implementing electric braking and aerodynamic braking are met after the speed of the high-speed superconducting electric magnetic suspension train is more than 150km/h, the conditions of implementing disc braking are not met, and the target braking mechanism is an electric braking mechanism and an aerodynamic braking mechanism.
In one possible implementation, the target braking mechanism is an electric braking mechanism and a disc braking mechanism if the target braking condition is a service braking condition or a maintenance braking condition.
The high-speed superconducting electric magnetic levitation train normally operates in a high-speed reduction mode, the speed of the high-speed superconducting electric magnetic levitation train is reduced to 200km/h by electric braking, the landing gear starts to be put down, the whole train is supported by the traveling wheels arranged on the landing gear, the speed reduction is realized by the electric braking in the process, the whole train is supported by the traveling wheels to travel after the landing gear is completely put down, and the speed reduction braking is realized by the electric braking and the wheel disc braking in the stage.
The brake function is stable under the working condition of service braking. Under the working condition of common braking, the high-speed superconducting electromagnetic levitation train is completely braked to stably reduce the high-speed superconducting electromagnetic levitation train from high speed to 7km/h and then is switched between electric braking and wheel disc braking, and the wheel disc braking is used for applying and maintaining braking until the high-speed superconducting electromagnetic levitation train completely stops after the speed is reduced to 3km/h, so that 1m/s can be maintained in the process2Constant deceleration. The electric brake of the high-speed superconducting electromagnetic levitation train is not influenced by adhesion factors, and constant deceleration control can be realized. The control curve for service brake conditions is shown in FIG. 4.
And braking the high-speed superconducting electromagnetic levitation train after the high-speed superconducting electromagnetic levitation train stops, wherein the high-speed superconducting electromagnetic levitation train is braked by a wheel disc braking mechanism arranged on a traveling wheel, so that the high-speed superconducting electromagnetic levitation train is continuously kept in a stopped state. Ensuring that the high-speed superconducting electric magnetic suspension train with the overload cannot slip on the maximum slope. And after the traction force of the high-speed superconducting electric-magnetic levitation train overcomes the maintaining braking force, the maintaining braking is relieved.
In one possible implementation, if the target braking condition is an emergency braking condition, the target braking mechanism is an electric braking mechanism, an aerodynamic braking mechanism, or a disc braking mechanism.
When meeting the emergencyAnd (5) a braking condition, wherein emergency braking is required to be implemented. The emergency braking can give full play to the control capability of braking, and different braking control strategies are adopted for different speed sections. The high-speed stage braking is mainly aerodynamic braking and electric braking, and the aerodynamic braking force of the high-speed superconducting electromagnetic levitation train is basically in direct proportion to the square of the running speed and is exponentially reduced along with the reduction of the speed, so that the two aerodynamic braking of the first-car turnover aerodynamic braking and the middle-car vertical lifting aerodynamic braking can be arranged to intervene in braking at different speed stages, the braking capacity of the aerodynamic braking can be fully utilized, and the influence of overlarge aerodynamic braking at the high-speed stage on the running stability of the train can be controlled. Under the working condition of emergency braking, the high-speed superconducting electric magnetic levitation train is required to maintain 1.8m/s2Constant deceleration. The control curve for the emergency braking condition is shown in fig. 5.
Based on the above, in a possible implementation manner, the method for determining the target braking mechanism from the electric braking mechanism, the skid braking mechanism, the aerodynamic braking mechanism and the wheel disc braking mechanism according to the target braking condition can be to obtain the running speed of the high-speed superconducting electromagnetic levitation train; and determining a target braking mechanism from the electric braking mechanism, the skid braking mechanism, the aerodynamic braking mechanism and the wheel disc braking mechanism according to the running speed and the target braking condition.
In a possible implementation manner, if the target braking condition is an emergency braking condition, the aerodynamic braking mechanism comprises a folding aerodynamic braking mechanism and a vertical lifting aerodynamic braking mechanism, and the mode of determining the target braking mechanism from the electric braking mechanism, the skid braking mechanism, the aerodynamic braking mechanism and the wheel disc braking mechanism according to the running speed and the target braking condition can be that if the running speed is determined to be in the process of decelerating from the first speed to the second speed, the vertical lifting aerodynamic braking mechanism and the electric braking mechanism are determined to be the target braking mechanism; if the running speed is determined to be in the process of decelerating from the second speed to the third speed, determining the vertical lifting aerodynamic braking mechanism, the folding aerodynamic braking mechanism and the electric braking mechanism as target braking mechanisms; if the running speed is determined to be in the process of decelerating from the third speed to the fourth speed, determining the aerodynamic braking mechanism and the electric braking mechanism as target braking mechanisms; and if the running speed is determined to be in the process of decelerating from the fourth speed to the fifth speed, determining the aerodynamic braking mechanism, the electric braking mechanism and the wheel disc braking mechanism as target braking mechanisms.
For example, the emergency braking condition is divided into four stages, and each stage selects a corresponding target braking mechanism to implement braking:
1) the first stage is as follows: in the process of reducing the speed to 500km/h from 650km/h, a vertical lifting aerodynamic braking mechanism and an electric braking mechanism which are not arranged on the carriage of the head car are used, the aerodynamic braking implemented by the aerodynamic braking mechanism is used as the main part, and the electric braking implemented by the electric braking mechanism is used as the auxiliary part. In order to ensure that the aerodynamic braking deceleration of the high-speed superconducting electromagnetic levitation train is not higher than 1.8m/s when the high-speed superconducting electromagnetic levitation train operates at 650km/h2At this stage, only the vertical lifting aerodynamic braking mechanism is put into use, the folding aerodynamic braking mechanism installed on the first carriage is not involved, and simultaneously, the 1.8m/s maintenance is carried out on the high-speed superconducting electromagnetic levitation train during emergency braking2The control system of the high-speed superconducting electromagnetic levitation train can supplement the insufficient part of the aerodynamic brake in real time by using the electric brake at constant deceleration. At this time, the first speed was the deceleration of 650km/h, and the second speed was 500 km/h.
2) And a second stage: and in the process of reducing the speed to 200km/h by 500km/h, a folding type aerodynamic braking mechanism, a vertical lifting aerodynamic braking mechanism and an electric braking mechanism are used for braking together. Along with the reduction of the speed of the high-speed superconducting electromagnetic levitation train, the braking capacity exerted by the vertical lifting aerodynamic braking mechanism is reduced, the folding aerodynamic braking mechanism in the stage can supplement the shortage of the braking force provided by the vertical lifting aerodynamic braking mechanism of the middle train, but the emergency braking deceleration provided by the two mechanisms in the stage is still not higher than 1.8m/s2To ensure that the high-speed superconducting electromagnetic levitation train maintains 1.8m/s during emergency braking2The control system of the high-speed superconducting electromagnetic levitation train can supplement the insufficient part of the aerodynamic brake in real time by using the electric brake at constant deceleration.As the speed is further reduced, electric braking will dominate and the ability of aerodynamic braking to provide deceleration drops rapidly. At this time, the second speed was 500km/h, and the third speed was 200 km/h.
3) And a third stage: the process of decelerating to 150km/h at 200km/h, the high-speed superconducting electromagnetic levitation train puts down the undercarriage at the stage of converting from a levitation state to a state of supporting and traveling by the traveling wheels, the entire train is supported by the traveling wheels arranged on the undercarriage, and the deceleration is implemented by the aerodynamic braking mechanism and the electric braking mechanism in the process, because the aerodynamic braking force at the stage is extremely weak, the high-speed superconducting electromagnetic levitation train maintains 1.8m/s2The electric brake mechanism will exert its braking force to the maximum extent at a constant deceleration. At this time, the third speed was 200km/h, and the fourth speed was 150 km/h.
4) A fourth stage: and in the process of decelerating to 0km/h at 150km/h, implementing deceleration braking by using an aerodynamic braking mechanism, an electric braking mechanism and a wheel disc braking mechanism. The speed is reduced, the aerodynamic braking mechanism is weakened, the electric braking mechanism is used as the main stage, and the wheel disc braking mechanism supplements the insufficient braking force provided by the electric braking mechanism. At this time, the fourth speed is 150km/h and the fifth speed is 0 km/h.
In a possible implementation manner, the state information is a working state of an electric brake mechanism of the high-speed superconducting electric maglev train, and the determining of the target braking condition of the high-speed superconducting electric maglev train according to the state information may be performed in a manner that the target braking condition is determined to be a safe braking condition if the working state of the electric brake mechanism indicates that the electric brake mechanism is in a fault state of a target level. The target level may be 3 levels according to the electric brake fault level described above.
When the electric brake mechanism of the high-speed superconducting electric magnetic suspension train is in a 3-level fault (a target-level fault), the high-speed superconducting electric magnetic suspension train enters a safe brake working condition, and under the safe brake working condition, the electric brake provided by the electric brake mechanism is completely cancelled, so that the aerodynamic brake of the high-speed superconducting electric magnetic suspension train is exerted to the maximum extent. Under the condition of safe braking, the high-speed superconducting electric magnetic levitation train is required to be flatThe average braking deceleration is not less than 1.5m/s2. The control under the safe braking condition is divided into two types, the first type is that the constant deceleration control is realized under the condition that a brake control system normally works after the undercarriage of the train is put down, and the control curve is shown in figure 6; the second is that when the high-speed superconducting electromagnetic levitation train landing gear is put down and the brake control system works abnormally, the constant wheel disc braking force is realized, and the braking curve is shown in figure 7.
In a possible implementation manner, if the target braking condition is the safe braking condition, the aerodynamic braking mechanism comprises a folding aerodynamic braking mechanism and a vertical lifting aerodynamic braking mechanism, and the mode of determining the target braking mechanism from the electric braking mechanism, the skid braking mechanism, the aerodynamic braking mechanism and the wheel disc braking mechanism according to the running speed and the target braking condition can be that if the running speed is determined to be in the process of decelerating from the sixth speed to the seventh speed, the folding aerodynamic braking mechanism and the vertical lifting aerodynamic braking mechanism are determined to be the target braking mechanism; if the running speed is determined to be in the process of decelerating from the seventh speed to the eighth speed, determining the aerodynamic braking mechanism as a target braking mechanism; and if the running speed is determined to be in the process of decelerating from the eighth speed to the ninth speed, determining the aerodynamic braking mechanism and the wheel disc braking mechanism as target braking mechanisms.
For example, the safety braking condition is divided into three stages, and each stage selects a corresponding target braking mechanism to implement braking:
1) the first stage is as follows: when the speed is reduced to 400km/h from 650km/h, the folding type aerodynamic braking mechanism and the vertical lifting aerodynamic braking mechanism are combined to implement braking, and the maximum braking force of the folding type aerodynamic braking mechanism and the vertical lifting aerodynamic braking mechanism is larger than 1.5m/s2. At this time, the sixth speed is 650km/h and the seventh speed is 400 km/h.
2) And a second stage: and (5) the speed is reduced to 350km/h from 400km/h, and the high-speed superconducting electric magnetic levitation train is converted from a levitation state to a state of walking by depending on walking wheels. The high-speed superconducting electromagnetic levitation train puts down the undercarriage, supports the whole train by using the traveling wheels arranged on the undercarriage, and decelerates by relying on an aerodynamic braking mechanism in the process. At this time, the seventh speed is 400km/h and the eighth speed is 350 km/h.
3) And a third stage: and in the process of decelerating to 0km/h at 350km/h, implementing deceleration braking by using an aerodynamic braking mechanism and a wheel disc braking mechanism. The braking capacity of the aerodynamic braking provided by the aerodynamic braking mechanism is sharply weakened along with the reduction of the speed, the wheel disc braking provided by the wheel disc braking mechanism can play a leading role, if the braking control system works normally at this stage, the antiskid of the high-speed superconducting electromagnetic levitation train is considered in the braking process, the average deceleration requirement of the high-speed superconducting electromagnetic levitation train is realized, and the priority of the antiskid requirement is higher than the average deceleration requirement; if the brake control system works abnormally at this stage, the skid resistance of the high-speed superconducting electric magnetic suspension train is not considered in the braking process, and the high-speed superconducting electric magnetic suspension train implements constant wheel disc braking force.
In one possible implementation, the target braking mechanism is a skid braking mechanism if the target braking condition is a landing braking condition or a parking braking condition.
When the superconductor arranged on the train suspension frame of the high-speed superconducting electric magnetic suspension train is quenched to cause that the train suspension frame of the high-speed superconducting electric magnetic suspension train cannot normally float, the high-speed superconducting electric magnetic suspension train needs to be controlled to heat the superconductors of other non-quenched train suspension frames, so that all the superconductors of the train suspension frames are quenched, the whole train suspension frame of the whole high-speed superconducting electric magnetic suspension train falls, and the train falling brake is implemented by means of friction between a skid arranged at the bottom of the train suspension frame and a track.
According to the technical scheme, the method comprises the steps that an electric braking mechanism, a skid braking mechanism, an aerodynamic braking mechanism and a wheel disc braking mechanism are arranged on the high-speed superconducting electromagnetic levitation train, when the high-speed superconducting electromagnetic levitation train needs to be braked, state information of the high-speed superconducting electromagnetic levitation train is obtained, a target braking condition of the high-speed superconducting electromagnetic levitation 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 wheel disc braking mechanism according to the target braking condition, and the target braking mechanism is controlled to execute a braking task to brake the high-speed superconducting electromagnetic levitation train. The method fills the blank of the braking scheme of the high-speed superconducting electric-magnetic levitation train, realizes braking of the high-speed superconducting electric-magnetic levitation train by selecting the corresponding combination of the electric braking mechanism, the skid braking mechanism, the aerodynamic braking mechanism and the wheel disc braking mechanism as the target braking mechanism under different target braking conditions by adding the aerodynamic braking mechanism and the wheel disc braking mechanism, and thus meets various braking condition requirements of the high-speed superconducting electric-magnetic levitation train.
The embodiment of the application provides a brake control device of a high-speed superconducting electric magnetic levitation train, which is shown in fig. 8 and comprises:
an obtaining unit 801, configured to obtain state information of the high-speed superconducting electromagnetic levitation train;
a determining unit 802, configured to determine a target braking condition of the high-speed superconducting electromagnetic levitation train according to the state information;
the determining 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 disc braking mechanism according to the target braking condition;
and the control unit 803 is used for controlling the target brake mechanism to execute a braking task so as to realize the braking of the high-speed superconducting electromagnetic levitation train.
Optionally, if the target braking condition is a normal starting acceleration condition, the target braking mechanism is the electric braking mechanism, the aerodynamic braking mechanism and the wheel disc braking mechanism, or the target braking mechanism is the electric braking mechanism and the aerodynamic braking mechanism.
Optionally, if the target braking condition is a service braking condition or a maintenance braking condition, the target braking mechanism is the electric braking mechanism and the wheel disc braking mechanism.
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 wheel disc braking mechanism.
Optionally, the state information is a working state of an electric brake mechanism of the high-speed superconducting electromagnetic levitation train, and the determining unit is configured to:
and if the working state of the electric braking mechanism indicates that the electric braking mechanism is in a fault state of a target level, determining that the target braking working condition is a safe braking working condition.
Optionally, the control unit is configured to:
acquiring the running speed of the high-speed superconducting electric magnetic levitation train;
and determining the target braking mechanism from the electric braking mechanism, the skid braking mechanism, the aerodynamic braking mechanism and the wheel disc braking mechanism according to the running speed and the target braking condition.
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:
if the running speed is determined to be in the process of decelerating from the first speed to the second speed, determining the vertical lifting aerodynamic braking mechanism and the electric braking mechanism as the target braking mechanism;
if the running speed is determined to be in the process of decelerating from the second speed to a third speed, determining that the vertical lifting aerodynamic braking mechanism, the folding aerodynamic braking mechanism and the electric braking mechanism are the target braking mechanisms;
if the running speed is determined to be in the process of decelerating from the third speed to the fourth speed, determining the aerodynamic braking mechanism and the electric braking mechanism as the target braking mechanism;
and if the running speed is determined to be in the process of decelerating from the fourth speed to the fifth speed, determining the aerodynamic braking mechanism, the electric braking mechanism and the wheel disc braking mechanism as the target braking mechanism.
Optionally, if the target braking condition is a safe 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:
if the running speed is determined to be in the process of decelerating from a sixth speed to a seventh speed, determining the folding type aerodynamic braking mechanism and the vertical lifting aerodynamic braking mechanism as the target braking mechanism;
if the running speed is determined to be in the process of decelerating from the seventh speed to the eighth speed, determining the aerodynamic braking mechanism as the target braking mechanism;
and if the running speed is determined to be in the process of decelerating from the eighth speed to the ninth speed, determining the aerodynamic braking mechanism and the wheel disc braking mechanism as the target braking mechanism.
Optionally, if the target braking condition is a falling braking condition or a parking braking condition, the target braking mechanism is the skid braking mechanism.
According to the technical scheme, the electric brake mechanism, the skid brake mechanism, the aerodynamic brake mechanism and the wheel disc brake mechanism are arranged on the high-speed superconducting electric magnetic suspension train, when the high-speed superconducting electric magnetic suspension train needs to be braked, the state information of the high-speed superconducting electric magnetic suspension train is obtained, the target brake working condition of the high-speed superconducting electric magnetic suspension train is determined according to the state information, the target brake mechanism is determined from the electric brake mechanism, the skid brake mechanism, the aerodynamic brake mechanism and the wheel disc brake mechanism according to the target brake working condition, and the target brake mechanism is controlled to execute a brake task so as to brake the high-speed superconducting electric magnetic suspension train. The method fills the blank of the braking scheme of the high-speed superconducting electric-magnetic levitation train, realizes braking of the high-speed superconducting electric-magnetic levitation train by selecting the corresponding combination of the electric braking mechanism, the skid braking mechanism, the aerodynamic braking mechanism and the wheel disc braking mechanism as the target braking mechanism under different target braking conditions by adding the aerodynamic braking mechanism and the wheel disc braking mechanism, and thus meets various braking condition requirements of the high-speed superconducting electric-magnetic levitation train.
Those of ordinary skill in the art will understand that: all or part of the steps for realizing the method embodiments can be completed by hardware related to program instructions, the program can be stored in a computer readable storage medium, and the program executes the steps comprising the method embodiments when executed; and the aforementioned storage medium may be at least one of the following media: various media that can store program codes, such as read-only memory (ROM), RAM, magnetic disk, or optical disk.
It should be noted that, in the present specification, all the embodiments are described in a progressive manner, and the same and similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the apparatus and system embodiments, since they are substantially similar to the method embodiments, they are described in a relatively simple manner, and reference may be made to some of the descriptions of the method embodiments for related points. The above-described embodiments of the apparatus and system are merely illustrative, and the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
The above description is only one specific embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (16)

1. A brake control method of a high-speed superconducting electromagnetic levitation train, characterized by comprising:
acquiring state information of the high-speed superconducting electric magnetic levitation train;
determining a target braking condition of the high-speed superconducting electromagnetic levitation 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 wheel disc braking mechanism according to the target braking working condition;
and controlling the target brake mechanism to execute a braking task so as to realize the braking of the high-speed superconducting electromagnetic levitation train.
2. The method of claim 1, wherein if the target braking condition is a normal start 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 of claim 1, wherein the target braking mechanism is the electric braking mechanism and the disc braking mechanism if the target braking condition is a service braking condition or a hold braking condition.
4. The method of claim 1, wherein the target braking mechanism is the electric braking mechanism, the aerodynamic braking mechanism, and the disc braking mechanism if the target braking condition is an emergency braking condition.
5. The method of claim 1, wherein the status information is an operating status of an electric brake mechanism of the high speed superconducting electromagnetic levitation train, and wherein determining the target braking condition of the high speed superconducting electromagnetic levitation train based on the status information comprises:
and if the working state of the electric braking mechanism indicates that the electric braking mechanism is in a fault state of a target level, determining that the target braking working condition is a safe braking working condition.
6. The method of claim 4 or 5, wherein determining a target brake mechanism from among an electric brake mechanism, a skid brake mechanism, an aerodynamic brake mechanism, and a disc brake mechanism according to the target brake condition comprises:
acquiring the running speed of the high-speed superconducting electric magnetic levitation train;
and determining the target braking mechanism from the electric braking mechanism, the skid braking mechanism, the aerodynamic braking mechanism and the wheel disc braking mechanism according to the running speed and the target braking condition.
7. The method of claim 6, wherein if the target braking condition is an emergency braking condition, the aerodynamic braking mechanism comprises a fold-over aerodynamic braking mechanism and a vertical lift aerodynamic braking mechanism, and determining the target braking mechanism from the electric braking mechanism, the skid braking mechanism, the aerodynamic braking mechanism, and the disc braking mechanism based on the travel speed and the target braking condition comprises:
if the running speed is determined to be in the process of decelerating from the first speed to the second speed, determining the vertical lifting aerodynamic braking mechanism and the electric braking mechanism as the target braking mechanism;
if the running speed is determined to be in the process of decelerating from the second speed to a third speed, determining that the vertical lifting aerodynamic braking mechanism, the folding aerodynamic braking mechanism and the electric braking mechanism are the target braking mechanisms;
if the running speed is determined to be in the process of decelerating from the third speed to the fourth speed, determining the aerodynamic braking mechanism and the electric braking mechanism as the target braking mechanism;
and if the running speed is determined to be in the process of decelerating from the fourth speed to the fifth speed, determining the aerodynamic braking mechanism, the electric braking mechanism and the wheel disc braking mechanism as the target braking mechanism.
8. The method of claim 6, wherein if the target braking condition is a safe braking condition, the aerodynamic braking mechanism comprises a fold-over aerodynamic braking mechanism and a vertical lift aerodynamic braking mechanism, and 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 travel speed and the target braking condition comprises:
if the running speed is determined to be in the process of decelerating from a sixth speed to a seventh speed, determining the folding type aerodynamic braking mechanism and the vertical lifting aerodynamic braking mechanism as the target braking mechanism;
if the running speed is determined to be in the process of decelerating from the seventh speed to the eighth speed, determining the aerodynamic braking mechanism as the target braking mechanism;
and if the running speed is determined to be in the process of decelerating from the eighth speed to the ninth speed, determining the aerodynamic braking mechanism and the wheel disc braking mechanism as the target braking mechanism.
9. The method of claim 1, wherein the target braking mechanism is the skid braking mechanism if the target braking condition is a drop braking condition or a park braking condition.
10. A brake control apparatus for a high speed superconducting electromagnetic levitation train, the apparatus comprising:
the acquisition unit is used for acquiring the state information of the high-speed superconducting electromagnetic levitation train;
the determining unit is used for determining the target braking condition of the high-speed superconducting electromagnetic levitation train according to the state information;
the determining unit is also used for determining a target braking mechanism from an electric braking mechanism, a skid braking mechanism, an aerodynamic braking mechanism and a wheel disc braking mechanism according to the target braking working condition;
and the control unit is used for controlling the target brake mechanism to execute a braking task so as to realize the braking of the high-speed superconducting electric-magnetic levitation train.
11. The high-speed superconducting electromagnetic levitation train is characterized by comprising a plurality of carriages, running wheels, a braking device and a braking control unit, wherein the braking device comprises an electric braking mechanism, a skid braking mechanism, an aerodynamic braking mechanism and a wheel disc braking mechanism:
the skid braking mechanism is arranged at the bottom of the train suspension frame;
the aerodynamic braking mechanism is arranged at the target position of the multiple carriages;
the wheel disc brake mechanism is arranged on the inner side of a traveling wheel of the train suspension frame;
and the brake control unit is used for selecting a target brake mechanism from the multiple brake mechanisms according to a target brake working condition to realize the braking of the high-speed superconducting electromagnetic levitation train.
12. The train of claim 11 wherein the aerodynamic brake mechanism comprises a vertical lift aerodynamic brake mechanism and the target location is an end wall of each of the plurality of cars.
13. The train of claim 12, wherein the vertical lift aerodynamic brake mechanism comprises an aerodynamic brake flap and a cylinder within the vertical lift aerodynamic brake mechanism, the vertical lift aerodynamic brake mechanism configured to actuate the cylinder with pressurized air to lift the aerodynamic brake flap upward.
14. The train of claim 11 wherein the plurality of cars includes a lead car and a non-lead car, the aerodynamic braking mechanism includes a roll-over aerodynamic braking mechanism and a vertical lift aerodynamic braking mechanism, the roll-over aerodynamic braking mechanism is mounted on the body structure above the train suspension of the lead car, the vertical lift aerodynamic braking mechanism is mounted on the end wall of the non-lead car, and the target locations are on the body structure above the train suspension of the lead car and on the end wall of the non-lead car.
15. The train of claim 14 wherein the folding aerodynamic braking mechanism comprises an aerodynamic braking flap and a cylinder within the folding aerodynamic braking mechanism, the folding aerodynamic braking mechanism being configured to drive the cylinder with pressurized oil to push the aerodynamic braking flap to open in a vertical direction;
the vertical lifting aerodynamic braking mechanism comprises an aerodynamic braking wing plate and an air cylinder inside the vertical lifting aerodynamic braking mechanism, and is used for driving the air cylinder by pressure air to push the aerodynamic braking wing plate to rise upwards.
16. A train according to any of claims 11 to 15, wherein the running wheels are rubber wheels.
CN202111398882.8A 2021-11-19 2021-11-19 Brake control method and device for high-speed superconducting electromagnetic levitation train and train Pending CN113911164A (en)

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CN202111398882.8A CN113911164A (en) 2021-11-19 2021-11-19 Brake control method and device for high-speed superconducting electromagnetic levitation train and train
PCT/CN2021/134787 WO2023087400A1 (en) 2021-11-19 2021-12-01 Braking control method and device for high-speed superconducting electric maglev train, and high-speed superconducting electric maglev train

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JPH0779506A (en) * 1993-09-09 1995-03-20 Toshiba Corp Aerodynamic brake controller
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