CN108128294B - Parking brake control method and device - Google Patents

Parking brake control method and device Download PDF

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Publication number
CN108128294B
CN108128294B CN201711312498.5A CN201711312498A CN108128294B CN 108128294 B CN108128294 B CN 108128294B CN 201711312498 A CN201711312498 A CN 201711312498A CN 108128294 B CN108128294 B CN 108128294B
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train
parking brake
force
rescue
hitching
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CN108128294A (en
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崔红光
张立国
梁杰
刘晓坤
张红萍
王寿峰
王相波
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CRRC Qingdao Sifang Co Ltd
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CRRC Qingdao Sifang Co Ltd
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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
    • 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
    • B60T2201/00—Particular use of vehicle brake systems; Special systems using also the brakes; Special software modules within the brake system controller
    • B60T2201/06—Hill holder; Start aid systems on inclined road

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  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Regulating Braking Force (AREA)

Abstract

The invention discloses a parking brake control method and device. Wherein, the method comprises the following steps: determining a hitching train set, wherein the hitching train set comprises: a train to be rescued and a rescue train; obtaining a parking brake instruction, wherein the parking brake instruction is used for indicating that a parking brake force is applied to the rescue train; on the basis of the holding brake force of the rescue train, the parking brake force is applied to the rescue train in response to the parking brake command, and the hitching train set is controlled to be kept static on the ramp. The invention solves the technical problem that the train is easy to slide on a long and large slope only under the condition of keeping braking in the related technology.

Description

Parking brake control method and device
Technical Field
The invention relates to the field of parking brake, in particular to a parking brake control method and device.
Background
At present, with the development of scientific technology and the demand of people on the development of urban traffic, various big cities have been developped to develop urban rail construction, many urban subway vehicle operation lines are successively developed, and for some cities, the problems of complex terrain conditions, long and large ramp lines and the like exist, so that the parking brake performance of trains is greatly examined. When a single train stops still on a long ramp, the requirements that a fault train in an overload state (namely AW3) and a rescue train in an idle state (namely AW0) are still on the long ramp under rescue conditions are also met. In addition, under the condition that the holding braking force of the maximum service brake is generally not satisfied, the train with the AW3 fault and the train with the AW0 rescue are still on a long slope, and the possibility of vehicle sliding exists.
Aiming at the problem that the train is easy to slide on a long and large slope only under the condition of keeping braking in the related technology, an effective solution is not provided at present.
Disclosure of Invention
The embodiment of the invention provides a parking brake control method and device, which at least solve the technical problem that a train is easy to slide on a long and large slope only under the condition of keeping braking in the related technology.
According to an aspect of an embodiment of the present invention, there is provided a parking brake control method including: determining a set of hitching train sets, wherein the set of hitching train sets comprises: a train to be rescued and a rescue train; obtaining a parking brake instruction, wherein the parking brake instruction is used for indicating that parking brake force is applied to the rescue train; and on the basis of the holding brake force of the rescue train, responding to the parking brake command, applying the parking brake force to the rescue train, and controlling the hitching train group to be held still on the slope.
Optionally, obtaining the parking brake command comprises: determining that a glide force of the hitching train set is greater than the holding brake force; and acquiring the parking brake instruction.
Optionally, before determining that the slip force of the hitching train set is greater than the holding brake force, the parking brake control method further comprises: determining the slip force by a first formula, wherein the first formula is: f1＝(MAW0+MAW3) G β, wherein MAW0Indicating the weight of said rescue train, MAW3Representing the weight of the train to be rescued, F1Representing the downhill force, g representing the gravitational acceleration, β representing the slope of the ramp; determining the holding brake force by a second formula, wherein the second formula is: f2＝MAW0A 70%, where a is service brake equivalent deceleration, F2Indicating the holding brake force.
Optionally, on the basis of the holding brake force of the rescue train, in response to the parking brake command, applying the parking brake force to the rescue train, and after controlling the hitching train set to remain stationary on the slope, the parking brake control method further comprises: starting a traction button of the rescue train; determining that the tractive force of the rescue train reaches a peak value; adjusting the parking brake force to reduce the parking brake force to a preset threshold.
According to another aspect of the embodiments of the present invention, there is also provided a parking brake control apparatus including: a first determination unit for determining a set of hitching trains, wherein the set of hitching trains comprises: a train to be rescued and a rescue train; the device comprises an acquisition unit, a control unit and a control unit, wherein the acquisition unit is used for acquiring a parking brake instruction, and the parking brake instruction is used for indicating that parking brake force is applied to the rescue train; and the control unit is used for responding to the parking brake command on the basis of the holding brake force of the rescue train, applying the parking brake force to the rescue train and controlling the hitching train set to be kept static on the slope.
Optionally, the obtaining unit includes: a determining module for determining that a glide force of the hitching train set is greater than the holding brake force; and the acquisition module is used for acquiring the parking brake instruction.
Optionally, the parking brake control device further comprises: a second determining unit configured to determine the slip force of the hitching train set by a first formula before determining that the slip force is greater than the holding brake force, wherein the first formula is: f1＝(MAW0+MAW3) G β, wherein MAW0Indicating the weight of said rescue train, MAW3Representing the weight of the train to be rescued, F1Representing the downhill force, g representing the gravitational acceleration, β representing the slope of the ramp; a third determination unit configured to determine the holding braking force by a second formula, wherein the second formula is: f2＝MAW0A 70%, where a is service brake equivalent deceleration, F2Indicating the holding brake force.
Optionally, the parking brake control device further comprises: the starting unit is used for responding to the parking brake instruction on the basis of the holding brake force of the rescue train, applying the parking brake force to the rescue train, and starting a traction button of the rescue train after the hitching train set is controlled to be kept static on the ramp; the fourth determining unit is used for determining that the traction force of the rescue train reaches the peak value; an adjusting unit for adjusting the parking brake force such that the parking brake force is reduced to a preset threshold.
According to another aspect of an embodiment of the present invention, there is also provided a storage medium including a stored program, wherein the program executes the parking brake control method according to any one of the above.
According to another aspect of the embodiment of the present invention, there is also provided a processor for executing a program, wherein the program is executed to execute the parking brake control method according to any one of the above.
In an embodiment of the present invention, a hitching train set is determined, wherein the hitching train set comprises: a train to be rescued and a rescue train; obtaining a parking brake instruction, wherein the parking brake instruction is used for indicating that a parking brake force is applied to the rescue train; on the basis of the holding brake force of the rescue train, the parking brake force is applied to the rescue train in response to the parking brake command, and the hitching train set is controlled to be kept static on the ramp. The parking brake control method provided by the embodiment of the invention can realize the purpose of applying the holding brake force to the rescue train and applying the parking brake force at the same time under the rescue condition, achieves the technical effect that the rescue train and the train to be rescued can be static on the slope, and further solves the technical problem that the train is easy to slide on the long and large slope only under the holding brake in the related technology.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
fig. 1 is a flowchart of a parking brake control method according to an embodiment of the present invention;
FIG. 2 is a schematic illustration of a hitching train set bearing forces on a grade according to an embodiment of the present invention; and
fig. 3 is a schematic view of a parking brake control apparatus according to an embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, 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 only a part of the embodiments of the present invention, and not all of the embodiments. 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.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
For convenience of description, some terms or expressions appearing in the embodiments of the present invention are explained in detail below:
keeping braking: the brakes applied when the train is normally operating and the platform is stopped are generally controlled by a brake system according to the train speed and a traction command, the brakes are applied when the train is stationary, the brakes are released when the traction command is received, the brakes are applied and the brakes are inflated and deflated by the brakes.
Parking and braking: the brake used when the train is parked in the garage for a long time is controlled by a release button applied to the parking brake of the train, the parking brake cylinder exhausts when the release button is applied, and the parking brake cylinder inflates when the release button is applied.
The unit mass (Atomic Weight, AW) is the same between the national QW0 and AW1 standards and abroad, AW1 refers to the fixed number of passengers in the standard state, AW0 is the no-load state, and AW3 is the overtaking state.
In accordance with an embodiment of the present invention, there is provided a method embodiment of a parking brake control method, it is noted that the steps illustrated in the flowchart of the drawings may be performed in a computer system, such as a set of computer-executable instructions, and that while a logical order is illustrated in the flowchart, in some cases the steps illustrated or described may be performed in an order different than presented herein.
Fig. 1 is a flowchart of a parking brake control method according to an embodiment of the present invention, as shown in fig. 1, including the steps of:
step S102, determining a hitching train set, wherein the hitching train set comprises the following steps: train to be rescued and rescue train.
The hitching train set is used for towing a train (a vehicle to be rescued) with a fault through a vehicle (namely a rescue train in the context) under the condition that the train has the fault, and further rescuing the train to be rescued. The rescue train is in an idle state, and the train to be rescued is in an overload state.
And step S104, obtaining a parking brake instruction, wherein the parking brake instruction is used for indicating that parking brake force is applied to the rescue train.
That is, after the rescue train is articulated with the train to be rescued, the rescue train can obtain a parking brake instruction for applying a parking brake force to the rescue train.
And S106, on the basis of the braking force maintaining of the rescue train, responding to a parking braking instruction, applying parking braking force to the rescue train, and controlling the hitching train group to keep still on the slope.
Wherein, the ramp is a long ramp, and the gradient is 5%. The braking force is applied under the condition that the rescue train keeps braking, the magnitude of the braking force is 70% of the maximum common braking force under the current load, the parking braking force applied by the rescue train is half of the conventional parking braking force of the train, namely, the anti-sliding braking strategy of the rescue train under the rescue condition in the embodiment of the invention is as follows: applying 70% of the maximum common braking force for the rescue train and half of the conventional parking braking force for the train.
Through the steps, a hitching train set can be determined, wherein the hitching train set can comprise: a train to be rescued and a rescue train; obtaining a parking brake instruction, wherein the parking brake instruction is used for indicating that a parking brake force is applied to the rescue train; on the basis of the holding brake force of the rescue train, the parking brake force is applied to the rescue train in response to the parking brake command, and the hitching train set is controlled to be kept static on the ramp. Compared with the defect that the train slides along the slope when the train breaks down on the slope in the related art, the method for controlling the parking brake can achieve the purpose that the train to be rescued and the train to be rescued can stop when the train to be rescued and the train to be rescued are applied with the holding brake under the rescue condition, achieve the technical effect that the train to be rescued and the train to be rescued can stop on the slope, and further solve the technical problem that the train slides along the long slope when the train is kept braked in the related art.
In step S104, obtaining the parking brake command may include: determining that the glide force of the hitching train set is greater than the holding brake force; and obtaining a parking brake instruction.
Before determining that the slip force of the hitching train set is greater than the holding brake force, the parking brake control method may further include: determining a slip force by a first formula, wherein the first formula is: f1＝(MAW0+MAW3) G β, wherein MAW0Indicating the weight of the rescue train, MAW3Representing the weight of the train to be rescued, F1Represents the downhill force, g represents the gravitational acceleration, and β represents the slope of the ramp; determining the holding braking force through a second formula, wherein the second formula is as follows: f2＝MAW0A 70%, where a is service brake equivalent deceleration, F2Indicating that the braking force is maintained.
For example, if the hitching train is to stop on the slope, the hold brake force in the upward direction is greater than the slip force in the downward direction. If, the weight MAW of the rescue train is above0Weight MAW of train to be rescued 204000kg3343320kg, half of the parking brake force F of the rescue train3245263N, the sum of the rescue train holding brake force and the parking brake force can be obtained as follows: MAW0*a*70％*0.5+F3Then β ═ MAW0*a*70％*0.5+F3]/[MAW0+MAW3)*g]Thus, β can be obtained as 0.62, and considering a safety factor of 1.1, the maximum gradient that can satisfy the ramp is:
Figure GDA0002159315160000051
the embodiment of the invention aims to rescue a train to be rescued in an overload state on a long and large slope with the gradient of 0.5 by a train in an unloaded state, so that the parking brake control method provided by the embodiment of the invention is feasible.
On the basis of the holding brake force of the rescue train, in response to a parking brake command, applying the parking brake force to the rescue train, and controlling the hitching train set to be held still on the slope, wherein the parking brake control method further comprises the following steps: starting a traction button of the rescue train; determining that the traction force of the rescue train reaches a peak value; the parking brake force is adjusted to reduce the parking brake force to a preset threshold.
Specifically, in the case of rescuing the train to be rescued on the above-mentioned ramp, the rescue train simultaneously keeps the rescue train and the train to be rescued stationary on the above-mentioned ramp under friction of the parking brake force and the holding brake force. When the traction motor of the rescue train reaches the peak value (about the time of pressing the traction button for 2-5S), the parking release button is pressed, and the rescue train pulls the rescue train and the rescued train to start on a long and large slope under the driving of traction force; when the condition of keeping the braking force to be relieved is met, the rescue vehicle relieves the keeping of the braking force, and rescue traction of the rescue vehicle on the long and large ramp is achieved.
By the parking brake control method provided by the embodiment of the invention, on the basis of not changing the brake keeping of a single train, the parking brake force can be increased under the rescue condition based on the brake keeping principle, so that the friction force is increased, and the total sliding force of the rescue train and the train to be rescued is overcome. In addition, a traction button is additionally arranged in the rescue mode, so that a traction loop is allowed to be established on the premise of applying parking brake force, and the rescue train and the train to be rescued are guaranteed not to slide and unhook during rescue on a long and large slope. And when the traction reaches the peak value, the parking brake is relieved, the relieving of the brake is kept to accord with the normal control logic, and the stable rescue of the rescue train and the vehicle to be rescued on the long and large slope is ensured. FIG. 2 is a schematic diagram of a stress relationship of a hitching train set on a slope according to an embodiment of the invention, specifically, as shown in FIG. 2, β is a gradient of the slope, A is a train to be rescued, B is a rescue train, F1For the above-mentioned maintenance of braking force, F2Is the gliding force (the gliding force comprises the gliding force of the rescue train and the gliding force of the train to be rescued).
Specifically, in order to rescue a train to be rescued which is in an overload state on a ramp with a gradient of 0.5 by a train of rescue trains in an idle state, traction force can be applied to the rescue train, the traction force can reach 360kN, wherein the maintenance braking force of the rescue train is relieved while the traction force is applied by triggering the traction button, and after the traction button is operated for 2 seconds, the parking braking relieving relay relieves the parking braking force by the parking braking relieving relay of the rescue train, so that the train to be rescued which is in the overload state is rescued on the ramp with the gradient of 0.5 by the train of rescue trains in the idle state under the condition of not sliding.
According to another aspect of the embodiment of the present invention, there is also provided a parking brake control apparatus, and fig. 3 is a schematic view of the parking brake control apparatus according to the embodiment of the present invention, as shown in fig. 3, including: the first determining unit 31, the obtaining unit 33, and the control unit 35 will be described in detail below with respect to the parking brake control device.
A first determination unit 31 for determining a set of hitching train sets, wherein a set of hitching train sets comprises: train to be rescued and rescue train.
And an obtaining unit 33, connected to the first determining unit 31, for obtaining a parking brake command, where the parking brake command is used to instruct to apply a parking brake force to the rescue train.
And the control unit 35 is connected with the acquisition unit 33 and used for responding to a parking brake command on the basis of the holding brake force of the rescue train, applying the parking brake force to the rescue train and controlling the hitching train group to be kept still on the slope.
In the above embodiment, a first determination unit may be utilized for determining a set of hitching train sets, wherein a set of hitching train sets comprises: a train to be rescued and a rescue train; the device comprises an acquisition unit, a control unit and a control unit, wherein the acquisition unit is used for acquiring a parking brake instruction, and the parking brake instruction is used for indicating that parking brake force is applied to the rescue train; and the control unit is used for responding to a parking brake instruction on the basis of the holding brake force of the rescue train, applying the parking brake force to the rescue train and controlling the hitching train group to keep still on the ramp. The parking brake control method provided by the embodiment of the invention can realize the purpose of applying the holding brake force to the rescue train and applying the parking brake force at the same time under the rescue condition, achieves the technical effect that the rescue train and the train to be rescued can be static on the slope, and further solves the technical problem that the train is easy to slide on the long and large slope only under the holding brake in the related technology.
In an optional embodiment of the present invention, the obtaining unit includes: the determining module is used for determining that the gliding force of the hitching train set is greater than the holding braking force; and the acquisition module is used for acquiring a parking brake instruction.
In an alternative embodiment of the present invention, the parking brake control apparatus further includes: a second determination unit for determining by the first formula that the slip force of the hitching train set is greater than the holding brake force before determining that the slip force is greater than the holding brake forceA slip force, wherein the first formula is: f1＝(MAW0+MAW3) G β, wherein MAW0Indicating the weight of the rescue train, MAW3Representing the weight of the train to be rescued, F1Represents the downhill force, g represents the gravitational acceleration, and β represents the slope of the ramp; a third determination unit for determining the holding braking force by a second formula, wherein the second formula is: f2＝MAW0A 70%, where a is service brake equivalent deceleration, F2Indicating that the braking force is maintained.
In an alternative embodiment of the present invention, the parking brake control apparatus further includes: the starting unit is used for responding to a parking braking instruction on the basis of the braking force keeping of the rescue train, applying parking braking force to the rescue train, and starting a traction button of the rescue train after the hitching train group is controlled to keep still on a ramp; the fourth determining unit is used for determining that the traction force of the rescue train reaches the peak value; and the adjusting unit is used for adjusting the parking braking force so as to reduce the parking braking force to a preset threshold value.
The parking brake control device may further include a processor and a memory, and the first determining unit 31, the obtaining unit 33, the control unit 35, and the like are stored in the memory as program units, and the processor executes the program units stored in the memory to implement corresponding functions.
The processor comprises a kernel, and the kernel calls the corresponding program unit from the memory. The kernel can be set to be one or more, the parking brake force is applied to the rescue train in response to the parking brake command on the basis of determining the maintenance brake force of the rescue train by adjusting the kernel parameters, and the hitching train set is controlled to keep still on the slope.
The memory may include volatile memory in a computer readable medium, Random Access Memory (RAM) and/or nonvolatile memory such as Read Only Memory (ROM) or flash memory (flash RAM), and the memory includes at least one memory chip.
According to another aspect of an embodiment of the present invention, there is also provided a storage medium including a stored program, wherein the program executes the parking brake control method of any one of the above.
According to another aspect of the embodiments of the present invention, there is also provided a processor for executing a program, wherein the program is executed to execute the parking brake control method according to any one of the above.
The embodiment of the present invention further provides an apparatus, which includes a processor, a memory, and a program stored in the memory and capable of being executed on the processor, and when the processor executes the program, the following steps are implemented: determining a hitching train set, wherein the hitching train set comprises: a train to be rescued and a rescue train; obtaining a parking brake instruction, wherein the parking brake instruction is used for indicating that a parking brake force is applied to the rescue train; on the basis of the holding brake force of the rescue train, the parking brake force is applied to the rescue train in response to the parking brake command, and the hitching train set is controlled to be kept static on the ramp.
An embodiment of the invention further provides a computer program product adapted to perform a program for initializing the following method steps when executed on a data processing device: determining a hitching train set, wherein the hitching train set comprises: a train to be rescued and a rescue train; obtaining a parking brake instruction, wherein the parking brake instruction is used for indicating that a parking brake force is applied to the rescue train; on the basis of the holding brake force of the rescue train, the parking brake force is applied to the rescue train in response to the parking brake command, and the hitching train set is controlled to be kept static on the ramp.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
In the above embodiments of the present invention, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units may be a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.
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 units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. 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 Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (10)

1. A parking brake control method characterized by comprising:
determining a set of hitching train sets, wherein the set of hitching train sets comprises: a train to be rescued and a rescue train;
obtaining a parking brake instruction, wherein the parking brake instruction is used for indicating that parking brake force is applied to the rescue train;
and on the basis of the holding brake force of the rescue train, responding to the parking brake command, applying the parking brake force to the rescue train, and controlling the hitching train group to be held still on the slope.
2. The method of claim 1, wherein obtaining the parking brake command comprises:
determining that a glide force of the hitching train set is greater than the holding brake force;
and acquiring the parking brake instruction.
3. The method of claim 2, further comprising, prior to determining that a glide force of the hitching train set is greater than the holding brake force:
determining the slip force by a first formula, wherein the first formula is: f1＝(MAW0+ MAW3 g β, where MAW0 represents the weight of the rescue train, MAW3 represents the weight of the train to be rescued, F1Representing the downhill force, g representing the gravitational acceleration, β representing the slope of the ramp;
determining the holding brake force by a second formula, wherein the second formula is: f2＝MAW0A 70%, where a is service brake equivalent deceleration, F2Indicating the holding brake force.
4. The method of claim 1, further comprising, after applying the parking brake force to the rescue train in response to the parking brake command based on the parking brake force of the rescue train to control the hitching train consist to remain stationary on the ramp, further comprising:
starting a traction button of the rescue train;
determining that the tractive force of the rescue train reaches a peak value;
adjusting the parking brake force to reduce the parking brake force to a preset threshold.
5. A parking brake control apparatus, characterized by comprising:
a first determination unit for determining a set of hitching trains, wherein the set of hitching trains comprises: a train to be rescued and a rescue train;
the device comprises an acquisition unit, a control unit and a control unit, wherein the acquisition unit is used for acquiring a parking brake instruction, and the parking brake instruction is used for indicating that parking brake force is applied to the rescue train;
and the control unit is used for responding to the parking brake command on the basis of the holding brake force of the rescue train, applying the parking brake force to the rescue train and controlling the hitching train set to be kept static on the slope.
6. The apparatus of claim 5, wherein the obtaining unit comprises:
a determining module for determining that a glide force of the hitching train set is greater than the holding brake force;
and the acquisition module is used for acquiring the parking brake instruction.
7. The apparatus of claim 6, further comprising:
a second determination unit for determining through the first formula before determining that the slip force of the hitching train set is greater than the holding brake forceDetermining the downslide force, wherein the first formula is: f1＝(MAW0+ MAW3 g β, where MAW0 represents the weight of the rescue train, MAW3 represents the weight of the train to be rescued, F1Representing the downhill force, g representing the gravitational acceleration, β representing the slope of the ramp;
a third determination unit configured to determine the holding braking force by a second formula, wherein the second formula is: f2＝MAW0A 70%, where a is service brake equivalent deceleration, F2Indicating the holding brake force.
8. The apparatus of claim 5, further comprising:
the starting unit is used for responding to the parking brake instruction on the basis of the holding brake force of the rescue train, applying the parking brake force to the rescue train, and starting a traction button of the rescue train after the hitching train set is controlled to be kept static on the ramp;
the fourth determining unit is used for determining that the traction force of the rescue train reaches the peak value;
an adjusting unit for adjusting the parking brake force such that the parking brake force is reduced to a preset threshold.
9. A storage medium characterized by comprising a stored program, wherein the program executes the parking brake control method according to any one of claims 1 to 4.
10. A processor, characterized in that the processor is configured to run a program, wherein the program is run to perform the parking brake control method according to any one of claims 1 to 4.
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CN109187057B (en) * 2018-11-02 2024-04-12 中车浦镇阿尔斯通运输系统有限公司 Method for checking parking brake capability
CN110758360B (en) * 2019-10-25 2020-09-08 中车青岛四方机车车辆股份有限公司 Train braking control method and device
CN111086533B (en) * 2020-01-02 2021-05-11 中车株洲电力机车有限公司 Traction brake control method, system and equipment of rescue vehicle

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