CN112721887A - Holding brake control method and system and railway vehicle - Google Patents
Holding brake control method and system and railway vehicle Download PDFInfo
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- CN112721887A CN112721887A CN202110071380.8A CN202110071380A CN112721887A CN 112721887 A CN112721887 A CN 112721887A CN 202110071380 A CN202110071380 A CN 202110071380A CN 112721887 A CN112721887 A CN 112721887A
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- 238000000034 method Methods 0.000 title claims abstract description 66
- 238000004590 computer program Methods 0.000 claims description 9
- 230000003068 static effect Effects 0.000 claims description 9
- 230000000116 mitigating effect Effects 0.000 claims description 8
- 238000004364 calculation method Methods 0.000 claims description 6
- 238000005265 energy consumption Methods 0.000 abstract description 10
- 238000004891 communication Methods 0.000 description 15
- 230000006870 function Effects 0.000 description 5
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- 238000004458 analytical method Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000004422 calculation algorithm Methods 0.000 description 1
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- 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
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/17—Using electrical or electronic regulation means to control braking
- B60T8/1701—Braking or traction control means specially adapted for particular types of vehicles
- B60T8/1705—Braking or traction control means specially adapted for particular types of vehicles for rail vehicles
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- 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
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/17—Using electrical or electronic regulation means to control braking
- B60T8/1755—Brake regulation specially adapted to control the stability of the vehicle, e.g. taking into account yaw rate or transverse acceleration in a curve
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L25/00—Recording or indicating positions or identities of vehicles or trains or setting of track apparatus
- B61L25/02—Indicating or recording positions or identities of vehicles or trains
- B61L25/025—Absolute localisation, e.g. providing geodetic coordinates
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- Mechanical Engineering (AREA)
- Transportation (AREA)
- Regulating Braking Force (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention provides a holding brake control method, a holding brake control system and a railway vehicle, wherein the holding brake control method comprises the following steps: acquiring running route information and position information of the rail vehicle; calculating the required holding braking force of the rail vehicle according to the running route information and the position information of the rail vehicle; and applying the holding braking force to the rail vehicle according to the holding braking force required by the rail vehicle. The impact in the starting stage is effectively reduced, on the premise of ensuring the braking and driving safety of the motor train unit, the energy consumption in starting is reduced, the energy is saved, the environment is protected, the comfort is improved, and the operation efficiency is improved.
Description
Technical Field
The invention relates to the technical field of rail transit, in particular to a method and a system for keeping brake control and a rail vehicle.
Background
The motor train unit is one of important components of the rail transit system, and the operation safety, reliability and efficiency of the motor train unit directly influence the operation of the rail transit system. The motor train unit is stopped and a brake keeping function is applied according to the planning of the development direction of safety, reliability and comfort of the motor train unit.
At present, a fixed holding braking force is adopted for holding braking applied to a motor train unit, and in order to ensure that a railway vehicle can stably stop on a slope and cannot slide down the slope, the set value of the holding braking force is often larger. Although the function of applying the holding brake during parking is helpful for preventing the train from generating the phenomenon of retrogression when starting on a ramp, the railway vehicle on a straight road needs larger traction force for overcoming the holding brake force during starting, so that the energy consumption is larger when the railway vehicle is started, the impact in the starting stage is large, and the problems of poor comfort of passengers, slow starting, low operation efficiency and the like are caused.
Therefore, how to provide a method and a system for maintaining brake control and a railway vehicle, reduce the impact in the starting stage, reduce the energy consumption during starting, save energy, protect environment, improve comfort and improve operation efficiency on the premise of ensuring the braking and driving safety of a motor train unit becomes a problem to be solved urgently.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a holding brake control method, a holding brake control system and a railway vehicle.
The invention provides a holding brake control method, which comprises the following steps:
acquiring running route information and position information of the rail vehicle;
calculating the required holding braking force of the rail vehicle according to the running route information and the position information of the rail vehicle;
and applying the holding braking force to the rail vehicle according to the holding braking force required by the rail vehicle.
According to the holding brake control method provided by the present invention,
the holding brake control method further includes:
and when the running route information and/or the position information of the rail vehicle cannot be acquired, calculating the required holding braking force of the rail vehicle according to the maximum gradient information allowed to be reached by the road during the running of the rail vehicle.
According to the holding brake control method provided by the present invention,
the applying of the holding braking force to the rail vehicle according to the holding braking force required by the rail vehicle specifically comprises:
determining gradient information of the current position of the rail vehicle according to the rail vehicle running route information and the rail vehicle position information;
and calculating the required holding braking force of the railway vehicle according to the gradient information.
According to the holding brake control method provided by the present invention,
the applying of the holding braking force to the rail vehicle according to the holding braking force required by the rail vehicle specifically comprises:
comparing the required holding braking force of the rail vehicle with the lowest braking force which can be provided by the rail vehicle;
if the required holding braking force of the rail vehicle is larger than the lowest braking force which can be provided by the rail vehicle, applying the holding braking force to the rail vehicle according to the required holding braking force of the rail vehicle;
and if the required holding braking force of the railway vehicle is not more than the lowest braking force which can be provided by the railway vehicle, applying the holding braking force to the railway vehicle according to the lowest braking force which can be provided by the railway vehicle.
According to the holding brake control method provided by the present invention,
the holding brake control method further includes:
when the rail vehicle is in a traction state, acquiring the actual traction of the rail vehicle;
comparing the rail vehicle actual tractive effort to a hold brake effort mitigation threshold;
if the actual traction force of the railway vehicle is greater than the braking force maintaining relieving threshold value, the railway vehicle relieves the braking force maintaining;
and if the actual traction force of the railway vehicle is not greater than the holding braking force relieving threshold value, the railway vehicle does not relieve the holding braking force.
According to the holding brake control method provided by the present invention,
when the required holding braking force of the railway vehicle is greater than the lowest braking force which can be provided by the railway vehicle, the holding braking force relieving threshold value is the sum of the required holding braking force of the railway vehicle and the static friction force overcome when the railway vehicle is started;
when the required holding brake force of the railway vehicle is not more than the lowest brake force which can be provided by the railway vehicle, the holding brake force relieving threshold value is the sum of the lowest brake force which can be provided by the railway vehicle and the static friction force which is overcome when the railway vehicle is started.
The present invention also provides a maintenance brake control system, comprising:
the information acquisition unit is used for acquiring the running route information and the position information of the rail vehicle;
the data calculation unit is used for calculating the required holding braking force of the rail vehicle according to the rail vehicle running route information and the rail vehicle position information;
and the brake applying unit is used for applying the holding braking force to the railway vehicle according to the holding braking force required by the railway vehicle.
The invention also provides a railway vehicle comprising the holding brake control system.
The invention also provides electronic equipment which comprises a memory and a processor, wherein the processor and the memory finish mutual communication through a bus; the memory stores program instructions executable by the processor, which when invoked by the processor are capable of performing the various steps of the holding brake control method as described above.
The invention also provides a non-transitory computer-readable storage medium having stored thereon a computer program which, when executed by a processor, carries out the steps of the holding brake control method as described above.
According to the method and the system for controlling the holding brake and the railway vehicle, the impact in the starting stage is reduced through the intelligent control on the holding brake force, on the premise of ensuring the braking and driving safety of the motor train unit, the energy consumption in the starting process is reduced, the energy is saved, the environment is protected, the comfort is improved, and the operation efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a flow chart of a holding brake control method provided by the present invention;
FIG. 2 is a flow chart of a method for maintaining braking control when signal communication is normal according to the present invention;
FIG. 3 is a flow chart of a method for maintaining braking control in case of abnormal signal communication according to the present invention;
FIG. 4 is a schematic diagram of a holding brake control system according to the present invention;
fig. 5 is a schematic physical structure diagram of an electronic device provided in the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
At present, pantograph video monitoring systems applied to batch loading of motor train units have the functions of real-time watching, video storage and the like, and an intelligent analysis host installation interface is reserved.
The intelligent analysis host computer extracts the structural characteristics of the pantograph of the running train and the structural state characteristics of the normal pantograph in the database by using an image processing technology, carries out contrastive analysis and confirms the working state of the current pantograph.
However, due to the fact that the difference of the running environments of the rail vehicles is large, the method for acquiring the images and extracting the characteristic information for comparison through the videos of the pantograph cannot guarantee the detection accuracy in the actual use process, and due to the fact that the calculation complexity is high, the detection real-time performance is poor.
Therefore, how to use the algorithm to extract the features is urgent to compare and match with the pantograph model to the maximum extent and improve the detection accuracy and the real-time performance.
Fig. 1 is a flowchart of a holding brake control method provided by the present invention, and as shown in fig. 1, the method includes:
step S1, acquiring running route information and position information of the rail vehicle;
step S2, calculating the required holding braking force of the rail vehicle according to the rail vehicle running route information and the rail vehicle position information;
and step S3, applying the holding braking force to the rail vehicle according to the holding braking force required by the rail vehicle.
Specifically, in step S1, the rail vehicle travels along the travel route, positions the travel position of the vehicle in real time, and acquires the travel route information and the position information of the rail vehicle.
In step S2, when it is determined that the railway vehicle is in a stopped state and the application of the holding brake is required, the holding brake force required by the railway vehicle is calculated based on the railway vehicle running route information and the railway vehicle position information acquired in step S1.
In step S3, a holding braking force is applied to the rail vehicle based on the holding braking force required for the rail vehicle calculated in step S2.
According to the holding brake control method provided by the invention, the holding brake force required by the rail vehicle is calculated according to the rail vehicle running route information and the rail vehicle position information, the holding brake is applied, the intelligent control on the holding brake force is realized, the impact in the starting stage is reduced, on the premise of ensuring the braking and driving safety of the motor train unit, the energy consumption in starting is reduced, the energy is saved, the environment is protected, the comfort is improved, and the operation efficiency is improved.
Alternatively, in the holding brake control method provided in any one of the embodiments of the present invention,
the holding brake control method further includes:
and when the running route information and/or the position information of the rail vehicle cannot be acquired, calculating the required holding braking force of the rail vehicle according to the maximum gradient information allowed to be reached by the road during the running of the rail vehicle.
Specifically, the present invention will be described taking the actual operation of the vehicle-related system as an example. Fig. 2 is a flowchart of a method for controlling holding braking when signal communication is normal according to the present invention, as shown in fig. 2.
During the running process of the rail vehicle, a situation that the rail vehicle running route information and/or the rail vehicle position information cannot be acquired due to some reasons may occur, for example: the signal system does not comprise running route information of the railways vehicle; the inability to communicate data via an MVB (Multifunction Vehicle Bus) results in the network system being unable to confirm the route information and the operating position of the Vehicle in real time.
At this time, when calculating the holding braking force required for the rail vehicle, the network system cannot perform calculation based on data of the current position of the rail vehicle. In order to ensure safety, the network system calculates the holding brake force required by the rail vehicle according to the maximum gradient information which the road is allowed to reach when the rail vehicle is running after the vehicle is in a parking state and the brake is applied.
Calculating the required holding brake force F for a rail vehicleHoldingThe formula of (1) is as follows:
Fholding＝Mgθ’
And Mg is the maximum load of the rail vehicle, and theta' is the maximum gradient allowed to be reached by the road when the rail vehicle runs.
On the basis of the above embodiment, the method for controlling holding braking provided by the invention can calculate the braking force required by the rail vehicle based on the maximum gradient allowed by the road when the rail vehicle runs and the maximum load of the rail vehicle when the running route information and the position information of the rail vehicle cannot be obtained, and apply the holding braking, so that the rail vehicle can be ensured to be safely started and stopped under the working condition without vehicle route data. The intelligent control on the brake force is realized, the impact in the starting stage is reduced, the energy consumption in starting is reduced on the premise of ensuring the braking and driving safety of the motor train unit, the energy is saved, the environment is protected, the comfort is improved, and the operation efficiency is improved.
Alternatively, in the holding brake control method provided in any one of the embodiments of the present invention,
the applying of the holding braking force to the rail vehicle according to the holding braking force required by the rail vehicle specifically comprises:
determining gradient information of the current position of the rail vehicle according to the rail vehicle running route information and the rail vehicle position information;
and calculating the required holding braking force of the railway vehicle according to the gradient information.
Specifically, the present invention will be described taking the actual operation of the vehicle-related system as an example. Fig. 3 is a flowchart of a method for controlling holding braking when signal communication is abnormal, as shown in fig. 3.
Under the condition that the communication function of the rail vehicle is innocent, the signal system records the line information of the running of the vehicle and can position the running position of the vehicle, and the signal system sends the running route information and the position information of the rail vehicle to the network system in real time through MVB data communication.
When the vehicle is in a parking state and braking is applied, the network system determines gradient information of the current position of the rail vehicle according to the obtained running route information of the rail vehicle and the position information of the rail vehicle, and calculates the required holding braking force of the rail vehicle.
Calculating the required holding brake force F for a rail vehicleHoldingThe formula of (1) is as follows:
Fholding＝FLower slide＝Mgθ
Wherein Mg is the gross weight of the rail vehicle under the overload condition, and theta is the gradient of the current position of the rail vehicle.
On the basis of the above embodiment, the holding brake control method provided by the invention calculates the braking force required by the rail vehicle to apply the holding brake based on the gradient of the current position of the rail vehicle and the total weight of the rail vehicle under the overload condition. Different keeping braking forces are calculated according to different slopes, the keeping braking force can be guaranteed to be not less than the gravity sliding force of the rail vehicle on the slope, the vehicle can be guaranteed to be stably stopped on the slope, and impact in the starting stage is reduced. Compared with the scheme of fixedly keeping the braking force in the prior art, the method can effectively reduce the energy consumption during starting, save energy, protect environment, improve the comfort and improve the operation efficiency.
Alternatively, in the holding brake control method provided in any one of the embodiments of the present invention,
the applying of the holding braking force to the rail vehicle according to the holding braking force required by the rail vehicle specifically comprises:
comparing the required holding braking force of the rail vehicle with the lowest braking force which can be provided by the rail vehicle;
if the required holding braking force of the rail vehicle is larger than the lowest braking force which can be provided by the rail vehicle, applying the holding braking force to the rail vehicle according to the required holding braking force of the rail vehicle;
and if the required holding braking force of the railway vehicle is not more than the lowest braking force which can be provided by the railway vehicle, applying the holding braking force to the railway vehicle according to the lowest braking force which can be provided by the railway vehicle.
Specifically, after the network system calculates the required holding brake force of the rail vehicle, the required holding brake force of the rail vehicle is compared with the lowest brake force that can be provided by the rail vehicle.
As shown in fig. 2 and 3, when the network system determines that the holding brake force required by the rail vehicle is greater than the minimum brake force that can be provided by the rail vehicle, the magnitude of the holding brake application command and the holding brake force is sent to a BCU (braking control unit) through MVB communication, and after receiving the holding brake command issued by the network system, the BCU applies the holding brake force to the rail vehicle according to the holding brake force required by the rail vehicle.
When the network system judges that the holding braking force required by the rail vehicle is not greater than the lowest braking force which can be provided by the rail vehicle (such as when the current rail vehicle is on a straight road), the holding braking application instruction and the holding braking force are sent to the BCU through MVB communication, and after the BCU receives the holding braking instruction sent by the network system, the BCU applies the holding braking force to the rail vehicle according to the lowest braking force which can be provided by the rail vehicle.
On the basis of the embodiment, the holding brake control method provided by the invention has the advantages that the calculated holding brake force required by the rail vehicle is compared with the lowest brake force capable of being provided by the rail vehicle, and the smaller value is selected as the holding brake force actually applied by the vehicle, so that the energy consumption during starting can be effectively reduced, and the purposes of energy conservation and environmental protection are further achieved.
Alternatively, in the holding brake control method provided in any one of the embodiments of the present invention,
the holding brake control method further includes:
when the rail vehicle is in a traction state, acquiring the actual traction of the rail vehicle;
comparing the rail vehicle actual tractive effort to a hold brake effort mitigation threshold;
if the actual traction force of the railway vehicle is greater than the braking force maintaining relieving threshold value, the railway vehicle relieves the braking force maintaining;
and if the actual traction force of the railway vehicle is not greater than the holding braking force relieving threshold value, the railway vehicle does not relieve the holding braking force.
Specifically, as shown in fig. 2 and 3, when the rail vehicle is in a braking state, and the driver control handle is turned to a traction position (the rail vehicle is in a traction state), the motor starts to work, the traction converter converts all motor currents into a value of the traction force of the whole vehicle, and uploads the actual traction force value of the rail vehicle to the network system.
And the network system obtains the actual traction force value of the rail vehicle uploaded by the traction converter and compares the actual traction force value with the braking force release maintaining threshold value.
And when the network system judges that the actual traction value of the railway vehicle is greater than the braking force release maintaining threshold value, the braking force release maintaining instruction is transmitted to the BCU, and the BCU starts to release the braking force after receiving the braking force release maintaining instruction sent by the network.
When the network system judges that the actual traction force value of the railway vehicle is not greater than the brake force maintaining release threshold value, the BCU receives a brake force maintaining non-release instruction issued by the network, and brake force maintaining is not released.
It should be noted that, in the present invention, the holding braking force mitigation threshold may be preset and fixed according to an actual requirement or calculated according to a preset rule, which is not limited in this embodiment.
On the basis of the embodiment, the method for controlling the holding brake calculates the size of the holding brake force required by the rail vehicle in real time according to the actual working condition of the line when the holding brake is applied to the rail vehicle, sets the holding brake force release threshold value when the rail vehicle applies the traction release holding brake, and selectively releases the holding brake, so that the stable stop and start of the rail vehicle under a large slope are ensured, and the low-torque start can be realized under a straight road or a small slope to meet the purposes of energy conservation and environmental protection.
Alternatively, in the holding brake control method provided in any one of the embodiments of the present invention,
when the required holding braking force of the railway vehicle is greater than the lowest braking force which can be provided by the railway vehicle, the holding braking force relieving threshold value is the sum of the required holding braking force of the railway vehicle and the static friction force overcome when the railway vehicle is started;
when the required holding brake force of the railway vehicle is not more than the lowest brake force which can be provided by the railway vehicle, the holding brake force relieving threshold value is the sum of the lowest brake force which can be provided by the railway vehicle and the static friction force which is overcome when the railway vehicle is started.
Specifically, when the holding brake force required by the rail vehicle is greater than the minimum brake force that can be provided by the rail vehicle, the holding brake force mitigation threshold value is the sum of the holding brake force required by the rail vehicle and the static friction force that is overcome when the rail vehicle is started.
Calculating a holding braking force mitigation threshold value FMitigationThe formula of (1) is as follows:
Fmitigation＝FHolding+FStatic friction force
When the holding brake force required by the rail vehicle is not greater than the lowest brake force which can be provided by the rail vehicle, the holding brake force mitigation threshold value is the sum of the lowest brake force which can be provided by the rail vehicle and the static friction force which is overcome when the rail vehicle is started.
Calculating a holding braking force mitigation threshold value FMitigationThe formula of (1) is as follows:
Fmitigation＝FLowest level of+FStatic friction force
Wherein, when the rail vehicle can obtain the rail vehicle running route information and the rail vehicle position information, FHolding＝FLower slideMg θ; when the rail vehicle running route information and/or the rail vehicle position information cannot be acquired, FHolding＝Mgθ’。
It should be noted that the lowest braking force F that can be provided by the rail vehicleLowest level ofAnd the static friction force F to be overcome when the rail vehicle is startedStatic friction forceThe calculation is performed according to the current situation of the rail vehicle, which is not limited in this embodiment.
On the basis of the embodiment, the method for controlling the holding brake provided by the invention can be used for calculating the size of the holding brake force required by the rail vehicle in real time according to the actual working condition of a line when the holding brake is applied to the rail vehicle, adjusting the holding brake force relieving threshold value in real time when the rail vehicle applies traction relieving holding brake, and selectively relieving the holding brake, so that the flexible intelligent control of the holding brake is realized, the stable parking and starting of the rail vehicle under a large slope are ensured, and the low-torque starting can be realized under a straight road or a small slope, so that the aims of saving energy and protecting environment are fulfilled.
Fig. 4 is a schematic structural diagram of a holding brake control system provided by the present invention, and as shown in fig. 4, the present invention further provides a holding brake control system, including:
an information obtaining unit 410, configured to obtain rail vehicle operation route information and rail vehicle position information;
the data calculation unit 420 is used for calculating the required holding braking force of the rail vehicle according to the running route information and the position information of the rail vehicle;
and a brake applying unit 430, configured to apply a holding braking force to the rail vehicle according to the holding braking force required by the rail vehicle.
Specifically, the rail vehicle runs according to a running route, and positions the running position of the vehicle in real time, and the information obtaining unit 410 is configured to obtain the running route information of the rail vehicle and the position information of the rail vehicle.
And the data calculating unit 420 is used for calculating the required holding braking force of the railway vehicle according to the railway vehicle running route information and the railway vehicle position information acquired by the information acquiring unit 410 when the railway vehicle is determined to be in a parking state and the holding braking needs to be applied.
And a brake applying unit 430, configured to apply a holding braking force to the rail vehicle according to the holding braking force required by the rail vehicle calculated by the data calculating unit 420.
According to the holding brake control system provided by the invention, the holding brake force required by the rail vehicle is calculated according to the rail vehicle running route information and the rail vehicle position information, the holding brake is applied, the intelligent control on the holding brake force is realized, the impact in the starting stage is reduced, on the premise of ensuring the braking and driving safety of the motor train unit, the energy consumption in starting is reduced, the energy is saved, the environment is protected, the comfort is improved, and the operation efficiency is improved.
It should be noted that, the holding brake control system provided in the embodiment of the present invention is used for executing the holding brake control method, and the specific implementation manner thereof is consistent with the method implementation manner, and is not described herein again.
The invention also provides a railway vehicle comprising the holding brake control system.
Specifically, the rail vehicle is equipped with the holding control system, and intelligent control of the holding braking force is realized.
The railway vehicle loading and loading holding control system provided by the invention calculates the holding braking force required by the railway vehicle according to the running route information and the position information of the railway vehicle, applies the holding braking, realizes the intelligent control on the holding braking force, reduces the impact in the starting stage, reduces the energy consumption during starting on the premise of ensuring the braking and driving safety of a motor train unit, and can save energy, protect environment, improve the comfort and improve the operation efficiency.
It should be noted that, the functions of the holding control system have been described in detail in the foregoing embodiments, and the holding brake control system is used for executing the holding brake control method, and the specific implementation manner thereof is consistent with the method implementation manner, and is not described herein again.
Fig. 5 is a schematic physical structure diagram of an electronic device provided in the present invention, and as shown in fig. 5, the electronic device may include: a processor (processor)510, a communication interface (communication interface)520, a memory (memory)530 and a communication bus (bus)504, wherein the processor 510, the communication interface 520 and the memory 530 complete communication with each other through the communication bus 504. Processor 510 may invoke logic instructions in memory 530 to perform the aforementioned hold brake control method, including: acquiring running route information and position information of the rail vehicle; calculating the required holding braking force of the rail vehicle according to the running route information and the position information of the rail vehicle; and applying the holding braking force to the rail vehicle according to the holding braking force required by the rail vehicle.
Furthermore, the logic instructions in the memory 530 may be implemented in the form of software functional units and stored in a computer readable storage medium when the software functional units are sold or used as independent products. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and the like.
In another aspect, an embodiment of the present invention further provides a computer program product, where the computer program product includes a computer program stored on a non-transitory computer-readable storage medium, the computer program includes program instructions, and when the program instructions are executed by a computer, the computer can execute the holding brake control method provided by the above-mentioned method embodiments, where the method includes: acquiring running route information and position information of the rail vehicle; calculating the required holding braking force of the rail vehicle according to the running route information and the position information of the rail vehicle; and applying the holding braking force to the rail vehicle according to the holding braking force required by the rail vehicle.
In yet another aspect, an embodiment of the present invention further provides a non-transitory computer-readable storage medium, on which a computer program is stored, the computer program being implemented by a processor to execute the methods provided in the foregoing embodiments to perform a holding brake control method, the method including: acquiring running route information and position information of the rail vehicle; calculating the required holding braking force of the rail vehicle according to the running route information and the position information of the rail vehicle; and applying the holding braking force to the rail vehicle according to the holding braking force required by the rail vehicle.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and 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.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A holding brake control method, characterized by comprising:
acquiring running route information and position information of the rail vehicle;
calculating the required holding braking force of the rail vehicle according to the running route information and the position information of the rail vehicle;
and applying the holding braking force to the rail vehicle according to the holding braking force required by the rail vehicle.
2. The holding brake control method according to claim 1,
the holding brake control method further includes:
and when the running route information and/or the position information of the rail vehicle cannot be acquired, calculating the required holding braking force of the rail vehicle according to the maximum gradient information allowed to be reached by the road during the running of the rail vehicle.
3. The holding brake control method according to claim 1,
the applying of the holding braking force to the rail vehicle according to the holding braking force required by the rail vehicle specifically comprises:
determining gradient information of the current position of the rail vehicle according to the rail vehicle running route information and the rail vehicle position information;
and calculating the required holding braking force of the railway vehicle according to the gradient information.
4. The holding brake control method according to claim 1,
the applying of the holding braking force to the rail vehicle according to the holding braking force required by the rail vehicle specifically comprises:
comparing the required holding braking force of the rail vehicle with the lowest braking force which can be provided by the rail vehicle;
if the required holding braking force of the rail vehicle is larger than the lowest braking force which can be provided by the rail vehicle, applying the holding braking force to the rail vehicle according to the required holding braking force of the rail vehicle;
and if the required holding braking force of the railway vehicle is not more than the lowest braking force which can be provided by the railway vehicle, applying the holding braking force to the railway vehicle according to the lowest braking force which can be provided by the railway vehicle.
5. The holding brake control method according to any one of claims 1 to 4,
the holding brake control method further includes:
when the rail vehicle is in a traction state, acquiring the actual traction of the rail vehicle;
comparing the rail vehicle actual tractive effort to a hold brake effort mitigation threshold;
if the actual traction force of the railway vehicle is greater than the braking force maintaining relieving threshold value, the railway vehicle relieves the braking force maintaining;
and if the actual traction force of the railway vehicle is not greater than the holding braking force relieving threshold value, the railway vehicle does not relieve the holding braking force.
6. The holding brake control method according to claim 5,
when the required holding braking force of the railway vehicle is greater than the lowest braking force which can be provided by the railway vehicle, the holding braking force relieving threshold value is the sum of the required holding braking force of the railway vehicle and the static friction force overcome when the railway vehicle is started;
when the required holding brake force of the railway vehicle is not more than the lowest brake force which can be provided by the railway vehicle, the holding brake force relieving threshold value is the sum of the lowest brake force which can be provided by the railway vehicle and the static friction force which is overcome when the railway vehicle is started.
7. A holding brake control system, comprising:
the information acquisition unit is used for acquiring the running route information and the position information of the rail vehicle;
the data calculation unit is used for calculating the required holding braking force of the rail vehicle according to the rail vehicle running route information and the rail vehicle position information;
and the brake applying unit is used for applying the holding braking force to the railway vehicle according to the holding braking force required by the railway vehicle.
8. A rail vehicle comprising the holding brake control system of claim 7.
9. An electronic device, comprising a memory and a processor, wherein the processor and the memory communicate with each other via a bus; the memory stores program instructions executable by the processor, the processor invoking the program instructions to enable execution of the method of holding brake control as claimed in any one of claims 1 to 6.
10. A non-transitory computer-readable storage medium having stored thereon a computer program, wherein the computer program, when executed by a processor, implements the holding brake control method according to any one of claims 1 to 6.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110071380.8A CN112721887A (en) | 2021-01-19 | 2021-01-19 | Holding brake control method and system and railway vehicle |
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| CN202110071380.8A CN112721887A (en) | 2021-01-19 | 2021-01-19 | Holding brake control method and system and railway vehicle |
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