CN116001751A - Scalable pneumatic brake control system and application thereof - Google Patents
Scalable pneumatic brake control system and application thereof Download PDFInfo
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- CN116001751A CN116001751A CN202211685633.1A CN202211685633A CN116001751A CN 116001751 A CN116001751 A CN 116001751A CN 202211685633 A CN202211685633 A CN 202211685633A CN 116001751 A CN116001751 A CN 116001751A
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Abstract
The invention discloses an expandable pneumatic brake control system and application thereof, and relates to the technical field of aviation. The system comprises a braking system, a state monitoring system, an expanding system and a control system; the braking system is used for braking the aircraft tire; the state monitoring system is used for monitoring cold air data in different stages and transmitting the data to the control system; the control system is used for receiving cold air feedback data and an upper computer instruction and controlling the brake system to output a specified function; the expansion system is used for superposing control equipment and realizing control of dual-redundancy cold air input, dual-redundancy cold air output and the like. The scalable pneumatic brake control system provided by the technical scheme of the invention has the advantages of simple structure, reliable structure, easiness in realizing fault isolation and expanding application, and effectively improved stability of the brake system.
Description
Technical Field
The invention relates to the technical field of aviation, in particular to an expandable pneumatic brake control system and application thereof.
Background
In the current aircraft platform system, a brake system is a key system for the taking-off and landing process of an aircraft and is an essential important component for the safe operation of the aircraft. Wherein, adopting multi-redundancy brake control is an effective method for improving the reliability of the brake system.
In the unmanned aerial vehicle/unmanned aerial vehicle braking system taking air pressure as power, a pilot or servo equipment controls a cold air distributor or similar pressure regulating equipment to output air with certain pressure to a braking mechanism, and the braking force is controlled through the adjustment of the air pressure, so that the operations of correcting the sliding direction of an airplane on the ground, steering, decelerating and stopping and the like are realized. However, the traditional system often only has a set of cold air pressure regulating loop, and the air supply and pressure regulating system connected with the left and right brake mechanisms has no redundant design, so that the whole brake system is invalid due to the damage of pressure regulating equipment or the damage of any pipeline element, and great potential safety hazard is brought.
Disclosure of Invention
In view of the above, the invention aims to provide an expandable pneumatic brake control system, which is provided with two or more sets of completely independent brake systems, has simple structure and reliable structure, is easy to realize fault isolation and expansion application, and effectively improves the stability of the brake system.
According to a first aspect of the present invention, there is provided an expandable pneumatic brake control system for control of an aircraft, characterized by: the system comprises a braking system, a state monitoring system, a control system and an expansion system;
the braking system is used for braking the aircraft tire;
the state monitoring system is used for monitoring the cold air states of different stages and obtaining cold air feedback data;
the control system is used for receiving cold air feedback data and an upper computer instruction and controlling the brake system to output a specified function;
the expansion system is used for superposing control equipment and realizing control of dual-redundancy or redundant cold air input, dual-redundancy or redundant cold air output and the like.
Further, the brake system comprises a high-pressure normally-open valve, a pressure reducing valve, a servo valve, a two-position three-way valve and a connecting pipeline;
the state monitoring system comprises a high-pressure cold air pressure sensor I, a high-pressure cold air pressure sensor II, a low-pressure cold air pressure sensor I, a low-pressure cold air pressure sensor II and a low-pressure cold air pressure sensor III;
the control system comprises a brake controller;
the expansion system comprises an external cold air pipeline joint and a pipeline plug.
Further, in the brake system, a high-pressure normally-open valve, a pressure reducing valve, a servo valve and a two-position three-way valve are sequentially connected by using a connecting pipeline;
the high-pressure normally open valve is used for controlling cold air input to enable;
the pressure reducing valve is used for reducing the pressure of the cold air to the maximum using cold air pressure;
the servo valve is used for controlling the pressure of the output cold air;
the two-position three-way valve is used for controlling cold air output enabling.
Further, the brake controller is used for receiving feedback data of each pressure sensor in the state monitoring system, controlling the working state of the electromagnetic valve, adjusting and controlling cold air pressure output by the servo valve, and receiving feedback of the output pressure of the servo valve when the servo valve outputs the cold air pressure.
Further, the external cold air pipeline joint of the expansion system comprises an input cold air pipeline external threaded joint, an input cold air pipeline internal threaded joint, an output cold air pipeline external threaded joint and an output cold air pipeline internal threaded joint;
the external threaded joint of the cold air pipeline at the input end and the internal threaded joint of the cold air pipeline at the input end can be in threaded connection, any joint of the external threaded joint of the cold air pipeline at the input end and the internal threaded joint of the cold air pipeline at the input end can be used as a cold air input end, and the other input end is plugged by a pipeline plug;
the cold air pipeline external threaded connector of the output end and the cold air pipeline internal threaded connector of the output end can be in threaded connection, any connector in the cold air pipeline external threaded connector of the output end and the cold air pipeline internal threaded connector of the output end can be used as a cold air output end, and the other output end is plugged by a pipeline plug.
Further, with the expansion system, the scalable pneumatic brake control system can be formed:
the single-sleeve pneumatic brake control system is characterized in that an inner threaded joint of an input cold air pipeline and an inner threaded joint of an output cold air pipeline are blocked by using a pipeline plug;
the multi-set brake control system with the single air source input end expanded is input by one air source, controls one air source to output, and comprises a first set of brake control system, a tail set of brake control system and n sets of middle brake control systems, wherein n is more than or equal to 0, the external threaded joints of the cold air pipelines at the input ends of the middle brake control system and the tail set of brake control system are connected with the internal threaded joints of the cold air pipelines at the input ends of the front set of brake control system, and the internal threaded joints of the cold air pipelines at the input ends of the tail set of brake control system are blocked by using pipeline plugs; the cold air pipeline external threaded connectors at the output ends of the middle brake control system and the tail sleeve brake control system are connected with the cold air pipeline internal threaded connector at the output end of the head sleeve brake control system, and the cold air pipeline internal threaded connectors at the output ends of the middle brake control system and the tail sleeve brake control system are plugged by using pipeline plugs;
the multi-set brake control system with the extended multi-path air source input ends is input by a plurality of paths of independent air sources, controls one path of air source to output and comprises a first set of brake control system, a tail set of brake control system and n sets of middle brake control systems, wherein n is more than or equal to 0, and cold air pipeline internal threaded joints at the input ends of the first set of brake control system, the tail set of brake control system and the middle brake control system are blocked by pipeline plugs; the cold air pipeline external threaded connectors at the output ends of the middle brake control system and the tail sleeve brake control system are connected with the cold air pipeline internal threaded connector at the output end of the head sleeve brake control system, and the cold air pipeline internal threaded connectors at the output ends of the middle brake control system and the tail sleeve brake control system are plugged by using pipeline plugs;
the multi-set brake control system with the extended output end is input by one air source and controls the output of multiple air sources, wherein the multi-set brake control system comprises a first set of brake control system, a tail set of brake control system and n sets of middle brake control systems, wherein n is more than or equal to 0, the external threaded joints of cold air pipelines at the input ends of the middle brake control system and the tail set of brake control system are connected with the internal threaded joints of cold air pipelines at the input ends of the front set of brake control system, and the internal threaded joints of the cold air pipelines at the input ends of the tail set of brake control system are blocked by using pipeline plugs; the inner threaded joints of the cold air pipeline at the output end of the first sleeve brake control system, the tail sleeve brake control system and the middle brake control system are all plugged by pipeline plugs.
Further, the single pneumatic brake control system works as follows:
the single pneumatic brake control system is characterized in that a high-pressure normally open valve is opened, namely, input cold air enters a pressure reducing valve through the high-pressure normally open valve, cold air with specified pressure is output to be communicated to a servo valve, and cold air pressure is output to the outside through a first passage of a two-position three-way valve;
the brake controller receives the instruction of the upper computer in real time, collects cold air pressure at different stages, and controls the servo valve to output specified pressure.
Further, the working modes of the multiple sets of brake control systems with single air source input end expansion and the multiple sets of brake control systems with multiple air source input ends expansion are as follows:
opening a first set of brake control system, inputting cold air into a pressure reducing valve through a high-pressure normally open valve, outputting cold air with specified pressure to be communicated with a servo valve, and outputting cold air pressure outwards through a first passage of a two-position three-way valve;
when the brake controller of the first set of brake control system detects that the first set of brake control system fails, the first set of brake control system is closed, the second set of brake control system is started, namely, the brake controller of the second set of brake control system controls the high-pressure normally-open valve of the first set of brake control system to be closed, the high-pressure normally-open valve of the second set of brake control system to be opened, and the two-position three-way valve of the first set of brake control system to be opened, so that cold air pressure is output to the outside;
when the brake controller of the second set of brake control system detects that the second set of brake control system fails, the second set of brake control system is closed, and the third set of brake control system is started, namely, the brake controller of the third set of brake control system controls the high-pressure normally open valve of the second set of brake control system to be closed, the high-pressure normally open valve of the third set of brake control system to be opened, and the two-position three-way valve second passage of the second set of brake control system to be opened, so that cold air pressure is output to the outside;
and so on.
Further, the working mode of the multiple sets of brake control systems with the extended output ends is as follows:
starting a plurality of sets of brake systems, inputting cold air into a pressure reducing valve through a high-pressure normally open valve, outputting cold air with specified pressure to be communicated with a servo valve, outputting two paths of cold air pressure outwards through a first passage of a two-position three-way valve, receiving an upper computer instruction in real time by a brake controller, respectively acquiring cold air pressure at different stages, and respectively controlling the servo valves to output the specified pressure;
when the brake controller detects that the brake system fails, the brake system is closed, namely the brake controller controls the high-pressure normally-open valve to be closed, the second passage of the two-position three-way valve to be opened, and cold air pressure output to the outside is cut off.
According to a second aspect of the present invention there is provided the use of an expandable pneumatic brake control system as described in any of the above aspects in an aircraft.
Compared with the prior art, the scalable pneumatic brake control system and method disclosed by the invention have the following advantages:
(1) The design has expandability, and can realize redundant input and output pneumatic brake control according to actual use requirements.
(2) The design of complete dual redundancy or redundancy can be realized, and other parts except for fixed structural parts such as an input and output pipeline, a device shell, a frame and the like are designed by adopting dual redundancy or redundancy. The control, driving, feedback and communication of two or more groups of pneumatic brake systems are completely independent, and when one controller fails completely, the redundancy switching can be still realized by switching on and off the control valve.
(3) The switching mechanism is used for switching and selecting the brake control system, has simple structure and reliable structure, is composed of an on-off control valve, can realize the switching of the brake system through simple power-on and power-off operation, and is easy to realize fault isolation.
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 specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:
FIG. 1 is a schematic diagram of an extensible pneumatic brake control system in accordance with the present invention;
fig. 2 is a schematic structural diagram of an extensible pneumatic brake control device according to the present invention.
Fig. 3 is a schematic diagram of a hybrid expansion structure of an input and output end of an expandable pneumatic brake control according to the present invention.
Reference numerals illustrate:
1-an air source input pipeline external threaded joint; 2-an air source input pipeline internal threaded joint; 3-an external threaded connector of an air source output pipeline; 4-an internal threaded joint of the air source output pipeline; 101-a high-pressure normally open valve; 102-a pressure reducing valve; 103-a servo valve; 104-a two-position three-way valve; 201-a high-pressure cold air pressure sensor I; 202-a high-pressure cold air pressure sensor II; 203-a low-pressure cold air pressure sensor I; 204-a low-pressure cold air pressure sensor II;205—low pressure cold air pressure sensor III; 301-a brake controller; 401-expanding application of the output ends of the multipath air sources; 402-single air source output end expansion application; 403-input extension application.
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present disclosure as detailed in the accompanying claims.
The terms first, second and the like in the description and in the claims, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the disclosure described herein may be capable of operation in sequences other than those illustrated or described herein, for example. 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.
A plurality, including two or more.
And/or, it should be understood that for the term "and/or" used in this disclosure, it is merely one association relationship describing associated objects, meaning that there may be three relationships. For example, a and/or B may represent: a exists alone, A and B exist together, and B exists alone.
The technical scheme of the invention provides an extensible pneumatic brake control system which comprises a brake system, a state monitoring system, an expanding system and a control system.
The braking system is used for braking the aircraft tire; the state monitoring system is used for monitoring the cold air states of different stages; the control system is used for receiving cold air feedback data and an upper computer instruction and controlling the brake system to output a specified function; the expansion system is used for superposing control equipment to realize control such as dual-redundancy cold air input, dual-redundancy cold air output and the like; the extensible pneumatic brake control system is single tire and single redundancy control, and is expanded and increased through an expansion system to realize multi-tire and redundancy control.
The brake system comprises a high-pressure normally open valve, a pressure reducing valve, a servo valve, a two-position three-way valve and a connecting pipeline; the state monitoring system comprises a high-pressure cold air pressure sensor I, a high-pressure cold air pressure sensor II, a low-pressure cold air pressure sensor I, a low-pressure cold air pressure sensor II and a low-pressure cold air pressure sensor III; the control system comprises a brake controller; the expansion system comprises an external cold air pipeline joint and a pipeline plug; the brake controller is respectively and electrically connected with a high-pressure normally-open valve, a servo valve, a two-position three-way valve, a high-pressure cold air pressure sensor I, a high-pressure cold air pressure sensor II, a low-pressure cold air pressure sensor I, a low-pressure cold air pressure sensor II and a low-pressure cold air pressure sensor III.
A valve body in the brake system is sequentially connected with a high-pressure normally-open valve, a pressure reducing valve, a servo valve and a two-position three-way valve through pipelines; the high-pressure normally open valve is used for controlling cold air input enabling; the pressure reducing valve is used for reducing the pressure of the cold air to the maximum using cold air pressure; the servo valve is used for controlling the output cold air pressure; the two-position three-way valve is used for controlling cold air output enabling.
The high-pressure cold air pressure sensor I is connected between the high-pressure normally-open valve and the cold air input joint and is used for collecting cold air pressure between the high-pressure normally-open valve and the cold air input joint; the high-pressure cold air pressure sensor II is connected between the high-pressure normally-open valve and the pressure reducing valve and is used for collecting cold air pressure between the high-pressure electromagnetic valve and the pressure reducing valve; the low-pressure cold air pressure sensor I is connected between the pressure reducing valve and the servo valve and is used for collecting cold air pressure between the pressure reducing valve and the servo valve; the low-pressure cold air pressure sensor II is connected between the servo valve and the low-pressure normally-open electromagnetic valve and is used for collecting cold air pressure between the servo valve and the low-pressure normally-open electromagnetic valve; the low-pressure cold air pressure sensor III is connected between the low-pressure normally-open electromagnetic valve and the cold air output joint and used for cold air pressure between the low-pressure normally-open electromagnetic valve and the cold air output joint;
the brake controller is electrically connected with the state monitoring system and the brake system. In addition, the brake controller is used for receiving feedback data of the pressure sensor, controlling the working state of the electromagnetic valve, adjusting and controlling cold air pressure output by the servo valve, and receiving feedback of the output pressure of the servo valve when the servo valve outputs the cold air pressure. Meanwhile, the outside of the brake controller is electrically connected with an upper computer, and the upper computer is used for receiving the working state of the brake control system and inputting instructions to the brake controller.
The expansion system comprises an input cold air pipeline external threaded joint, an input cold air pipeline internal threaded joint, an output cold air pipeline external threaded joint and an output cold air pipeline internal threaded joint; the external threaded joint of the cold air pipeline at the input end and the internal threaded joint of the cold air pipeline at the input end can be in threaded connection; any one of the external threaded joint of the cold air pipeline at the input end and the internal threaded joint of the cold air pipeline at the input end can be used as a cold air input end, and the other input end is plugged by a pipeline plug; the external threaded joint of the cold air pipeline at the output end and the internal threaded joint of the cold air pipeline at the output end can be in threaded connection; any one of the external threaded joint of the cold air pipeline at the output end and the internal threaded joint of the cold air pipeline at the output end can be used as the cold air output end, and the other output end is plugged by a pipeline plug.
The using method of the expandable pneumatic brake control system specifically comprises the following steps:
conventional use: the single-sleeve pneumatic brake control system is characterized in that an input end cold air pipeline internal threaded connector and an output end cold air pipeline internal threaded connector are plugged by a pipeline plug; the single pneumatic brake control system is characterized in that a high-pressure normally open valve is opened, namely, input cold air enters a pressure reducing valve through the high-pressure normally open valve, cold air with specified pressure is output to be communicated to a servo valve, and cold air pressure is output to the outside through a first passage of a two-position three-way valve; the brake controller receives the instruction of the upper computer in real time, collects cold air pressure at different stages, and controls the servo valve to output specified pressure.
Output end expansion use: the output end of the multi-set brake control system is expanded, and one air source is input to control the output of a plurality of air sources; the cold air pipeline external threaded joint at the input end of the brake control system is connected with the cold air pipeline internal threaded joint at the input end of the front set of brake control system, and the cold air pipeline internal threaded joint at the second set of input end is plugged by a pipeline plug; the first set and the second set of the cold air pipeline internal threaded joints at the output end are plugged by pipeline plugs; and so on.
The working mode is as follows:
starting a plurality of sets of brake systems, inputting cold air into a pressure reducing valve through a high-pressure normally open valve, outputting cold air with specified pressure to be communicated with a servo valve, outputting two paths of cold air pressure outwards through a first passage of a two-position three-way valve, receiving an upper computer instruction in real time by a brake controller, respectively acquiring cold air pressure at different stages, and respectively controlling the servo valves to output the specified pressure;
when the brake controller detects that the brake system fails, the brake system is closed, namely the brake controller controls the high-pressure normally-open valve to be closed, the second passage of the two-position three-way valve to be opened, and cold air pressure output to the outside is cut off.
Single air source input end expansion use: the input end of the multiple sets of brake control systems is extended, and one air source is input to control one air source to output; the external threaded joint of the cold air pipeline at the input end of the brake control system is connected with the internal threaded joint of the cold air pipeline at the input end of the front set of brake control system, so that a path of air source entering from the external threaded joint of the cold air pipeline at the input end of the front set of brake control system can be shared; the cold air pipeline internal threaded joint at the input end is plugged by a pipeline plug, so that an independent air source entering the cold air pipeline external threaded joint at the input end of the brake control system can be realized; the cold air pipeline external threaded joint at the output end of the brake control system is connected with the cold air pipeline internal threaded joint at the output end of the first set of brake control system, and the cold air pipeline internal threaded joints at the output ends of other sets of brake control system are plugged by using pipeline plugs, so that one air source output by the cold air pipeline external threaded joint at the output end of the first set of brake control system can be realized; and so on.
The working mode is as follows:
starting a first set of brake system, inputting cold air into a pressure reducing valve through a high-pressure normally-open valve, outputting cold air with specified pressure to be communicated with a servo valve, and outputting cold air pressure outwards through a first passage of a two-position three-way valve;
when the first set of brake controller detects that the first set of brake system fails, the first set of brake system is closed, and the second set of brake system is started, namely the second set of brake controller controls the first set of high-pressure normally-open valve to be closed, the second set of high-pressure normally-open valve to be opened, and the second set of two-position three-way valve to be opened, so that cold air pressure is output to the outside;
when the second set of brake controller detects that the second set of brake system fails, the second set of brake system is closed, and the third set of brake system is started, namely the third set of brake controller controls the second set of high-pressure normally-open valve to be closed, the third set of high-pressure normally-open valve to be opened, and the second set of two-position three-way valve to be opened, so that cold air pressure is output to the outside.
The multi-path air source input end is expanded and used: the input end of the multi-set brake control system is expanded, and the input ends of the multi-set brake control system are input by independent multi-path air sources to control one-path air source to output;
input and output end mixed expansion use: the multiple sets of brake control systems with the extended input and output ends are mixed, and one or multiple air sources are used for inputting and controlling the output of any air source.
Examples
The schematic diagram of the scalable pneumatic brake control system shown in fig. 1, wherein a thick solid line with an arrow is an equipment internal connecting pipeline, the arrow represents a cold air working direction, a dash-dot line with an arrow is a control line, the arrow is a communication transmission direction, a left broken line round corner frame is a control system, and a state monitoring system, a control system and an expansion system are sequentially arranged right.
As shown in fig. 2, the air source input and output pipelines of the brake system can be provided with an air source input pipeline external threaded joint 1, an air source input pipeline internal threaded joint, a 2 air source output pipeline external threaded joint 3 and an air source output pipeline internal threaded joint 4. Cold air enters from an air source input pipeline, and is fed back to a brake controller 301 through a high-pressure normally open valve 101, a pressure reducing valve 102 and a servo valve 103 by cold air pressure in each stage of a high-pressure cold air pressure sensor I201, a high-pressure cold air pressure sensor II 202, a low-pressure cold air pressure sensor I203, a low-pressure cold air pressure sensor II 204 and a low-pressure cold air pressure sensor III 205, and is controlled by the brake controller to obtain the output pressure of the cold air required by braking, and the cold air pressure is output by a two-position three-way valve 104 so as to control a pneumatic brake mechanism;
fig. 3 shows a schematic diagram of an expandable pneumatic brake control input/output end hybrid expansion structure, wherein a left dotted rounded frame is a multi-path air source input end expansion system 401, and a single air source input end expansion system 402 and an output end expansion system 403 are arranged right in sequence.
Referring to fig. 3, the brake control expansion system is divided into four expansion systems:
1) The output end expansion system is input by one air source and controls the output of multiple air sources; an input cold air pipeline external threaded joint 1 of the brake control system is connected with an input cold air pipeline internal threaded joint 2 of the front set of brake control system, and a second set of input cold air pipeline internal threaded joint is plugged by a pipeline plug; the first set and the second set of cold air pipeline internal threaded joints 4 at the output end are plugged by pipeline plugs; and so on.
One air source of two or more sets of pneumatic brake control equipment is used for inputting and outputting multi-path cold air; when the first set of pneumatic brake equipment is judged to be faulty, the brake system is switched to the second set of pneumatic brake equipment to work after the upper computer judges, and at the moment, the first set of high-pressure normally open valve is disconnected to cut off cold air output, so that fault isolation is realized.
2) The single air source input end expansion system is input by two or more sets of pneumatic brake control equipment through one air source, and the first set of pneumatic brake equipment is preferentially used; the cold air of the first passage of the two-position three-way valve is opened, and the second set of high-pressure normally open valve is opened; when the first set of pneumatic brake equipment is judged to be faulty, the brake system is switched to the second set of pneumatic brake equipment to work after the upper computer judges that the first set of high-pressure normally open valve is disconnected at the moment, the second set of high-pressure normally open valve is disconnected, and the second passage of the first set of two-position three-way valve is a passage; the cold air can only pass through the second set of pneumatic braking equipment, and the pressure is output by the second passage of the first set of two-position three-way valve; and so on.
3) The multi-path air source transmission system is characterized in that two or more sets of pneumatic brake control equipment are input by independent air sources respectively, and a first set of pneumatic brake equipment is preferentially used; the cold air of the first passage of the two-position three-way valve is opened, and the second set of high-pressure normally open valve is opened; when the first set of pneumatic brake equipment is judged to be faulty, the brake system is switched to the second set of pneumatic brake equipment to work after the upper computer judges that the first set of high-pressure normally open valve is disconnected at the moment, the second set of high-pressure normally open valve is disconnected, and the second passage of the first set of two-position three-way valve is a passage; the cold air can only pass through the second set of pneumatic braking equipment, and the pressure is output by the second passage of the first set of two-position three-way valve; and so on.
4) The input and output end mixed expansion system is input by two or more sets of pneumatic brake control equipment through any air source, the mixed expansion system is divided into an input end expansion system, a single air source output end expansion system and a multi-path air source output end expansion system, and air path control is carried out according to the first three expansion systems.
In conclusion, the invention has good practicability and system usability through reasonable design, and is easy to realize mass production. According to the invention, through the design of the pneumatic brake control single device and the combination and collocation of multiple sets of devices, redundant brake control devices can be formed, double redundancy backup is realized, and the reliability of a brake control system is greatly improved.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (10)
1. An expandable pneumatic brake control system for control of an aircraft, the expandable pneumatic brake control system characterized by: the system comprises a braking system, a state monitoring system, a control system and an expansion system;
the braking system is used for braking the aircraft tire;
the state monitoring system is used for monitoring the cold air states of different stages and obtaining cold air feedback data;
the control system is used for receiving cold air feedback data and an upper computer instruction and controlling the brake system to output a specified function;
the expansion system is used for superposing control equipment to realize redundant cold air input or redundant cold air output control.
2. An expandable pneumatic brake control system in accordance with claim 1,
the brake system comprises a high-pressure normally open valve, a pressure reducing valve, a servo valve, a two-position three-way valve and a connecting pipeline;
the state monitoring system comprises a high-pressure cold air pressure sensor I, a high-pressure cold air pressure sensor II, a low-pressure cold air pressure sensor I, a low-pressure cold air pressure sensor II and a low-pressure cold air pressure sensor III;
the control system comprises a brake controller;
the expansion system comprises an external cold air pipeline joint and a pipeline plug.
3. An expandable pneumatic brake control system as set forth in claim 2, wherein,
in the brake system, a high-pressure normally-open valve, a pressure reducing valve, a servo valve and a two-position three-way valve are sequentially connected by using a connecting pipeline;
the high-pressure normally open valve is used for controlling cold air input to enable;
the pressure reducing valve is used for reducing the pressure of the cold air to the maximum using cold air pressure;
the servo valve is used for controlling the pressure of the output cold air;
the two-position three-way valve is used for controlling cold air output enabling.
4. An expandable pneumatic brake control system as set forth in claim 3, wherein,
the brake controller is used for receiving feedback data of each pressure sensor in the state monitoring system, controlling the working state of the electromagnetic valve, adjusting and controlling cold air pressure output by the servo valve, and receiving feedback of the output pressure of the servo valve when the servo valve outputs the cold air pressure.
5. An expandable pneumatic brake control system as set forth in claim 2, wherein,
the external cold air pipeline joint of the expansion system comprises an input cold air pipeline external threaded joint, an input cold air pipeline internal threaded joint, an output cold air pipeline external threaded joint and an output cold air pipeline internal threaded joint;
the external threaded joint of the cold air pipeline at the input end and the internal threaded joint of the cold air pipeline at the input end can be in threaded connection, any joint of the external threaded joint of the cold air pipeline at the input end and the internal threaded joint of the cold air pipeline at the input end can be used as a cold air input end, and the other input end is plugged by a pipeline plug;
the cold air pipeline external threaded connector of the output end and the cold air pipeline internal threaded connector of the output end can be in threaded connection, any connector in the cold air pipeline external threaded connector of the output end and the cold air pipeline internal threaded connector of the output end can be used as a cold air output end, and the other output end is plugged by a pipeline plug.
6. The scalable pneumatic brake control system of claim 5, wherein by way of the expansion system, the scalable pneumatic brake control system is capable of forming:
the single-sleeve pneumatic brake control system is characterized in that an inner threaded joint of an input cold air pipeline and an inner threaded joint of an output cold air pipeline are blocked by using a pipeline plug;
the multi-set brake control system with the single air source input end expanded is input by one air source, controls one air source to output and comprises a first set of brake control system, a tail set of brake control system and a plurality of sets of middle brake control systems, wherein the cold air pipeline external threaded joints at the input ends of the middle brake control system and the tail set of brake control system are connected with the cold air pipeline internal threaded joints at the input ends of the front set of brake control system, and the cold air pipeline internal threaded joints at the input ends of the tail set of brake control system are plugged by pipeline plugs; the cold air pipeline external threaded connectors at the output ends of the middle brake control system and the tail sleeve brake control system are connected with the cold air pipeline internal threaded connector at the output end of the head sleeve brake control system, and the cold air pipeline internal threaded connectors at the output ends of the middle brake control system and the tail sleeve brake control system are plugged by using pipeline plugs;
the multi-set brake control system with the extended multi-path air source input ends is input by a plurality of paths of independent air sources, controls one path of air source to output and comprises a first set of brake control system, a tail set of brake control system and a plurality of sets of middle brake control systems, wherein the first set of brake control system, the tail set of brake control system and the cold air pipeline internal threaded joints at the input ends of the middle brake control system are plugged by pipeline plugs; the cold air pipeline external threaded connectors at the output ends of the middle brake control system and the tail sleeve brake control system are connected with the cold air pipeline internal threaded connector at the output end of the head sleeve brake control system, and the cold air pipeline internal threaded connectors at the output ends of the middle brake control system and the tail sleeve brake control system are plugged by using pipeline plugs;
the multi-set brake control system with the extended output end is input by one air source and controls the output of a plurality of air sources, wherein the multi-set brake control system comprises a first set of brake control system, a tail set of brake control system and a plurality of sets of intermediate brake control systems, wherein the cold air pipeline external threaded joints at the input ends of the intermediate brake control system and the tail set of brake control system are connected with the cold air pipeline internal threaded joints at the input ends of the front set of brake control system, and the cold air pipeline internal threaded joints at the input ends of the tail set of brake control system are plugged by pipeline plugs; the inner threaded joints of the cold air pipeline at the output end of the first sleeve brake control system, the tail sleeve brake control system and the middle brake control system are all plugged by pipeline plugs.
7. The scalable pneumatic brake control system of claim 6, wherein the control method of the single set of pneumatic brake control system comprises:
the single pneumatic brake control system is characterized in that a high-pressure normally open valve is opened, namely, input cold air enters a pressure reducing valve through the high-pressure normally open valve, cold air with specified pressure is output to be communicated to a servo valve, and cold air pressure is output to the outside through a first passage of a two-position three-way valve;
the brake controller receives the instruction of the upper computer in real time, collects cold air pressure at different stages, and controls the servo valve to output specified pressure.
8. The scalable pneumatic brake control system of claim 6, wherein the control method of the single air source input extended multiple brake control system and the multiple air source input extended multiple brake control system comprises:
opening a first set of brake control system, inputting cold air into a pressure reducing valve through a high-pressure normally open valve, outputting cold air with specified pressure to be communicated with a servo valve, and outputting cold air pressure outwards through a first passage of a two-position three-way valve;
when the brake controller of the first set of brake control system detects that the first set of brake control system fails, the first set of brake control system is closed, the second set of brake control system is started, namely, the brake controller of the second set of brake control system controls the high-pressure normally-open valve of the first set of brake control system to be closed, the high-pressure normally-open valve of the second set of brake control system to be opened, and the two-position three-way valve of the first set of brake control system to be opened, so that cold air pressure is output to the outside;
when the brake controller of the second set of brake control system detects that the second set of brake control system fails, the second set of brake control system is closed, and the third set of brake control system is started, namely, the brake controller of the third set of brake control system controls the high-pressure normally open valve of the second set of brake control system to be closed, the high-pressure normally open valve of the third set of brake control system to be opened, and the two-position three-way valve second passage of the second set of brake control system to be opened, so that cold air pressure is output to the outside;
and so on.
9. The scalable pneumatic brake control system of claim 6, wherein the control method of the output-extended multiple brake control system comprises:
starting a plurality of sets of brake systems, inputting cold air into a pressure reducing valve through a high-pressure normally open valve, outputting cold air with specified pressure to be communicated with a servo valve, outputting two paths of cold air pressure outwards through a first passage of a two-position three-way valve, receiving an upper computer instruction in real time by a brake controller, respectively acquiring cold air pressure at different stages, and respectively controlling the servo valves to output the specified pressure;
when the brake controller detects that the brake system fails, the brake system is closed, namely the brake controller controls the high-pressure normally-open valve to be closed, the second passage of the two-position three-way valve to be opened, and cold air pressure output to the outside is cut off.
10. Use of an expandable pneumatic brake control system according to any one of claims 1 to 9 in an aircraft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211685633.1A CN116001751A (en) | 2022-12-27 | 2022-12-27 | Scalable pneumatic brake control system and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211685633.1A CN116001751A (en) | 2022-12-27 | 2022-12-27 | Scalable pneumatic brake control system and application thereof |
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| Publication Number | Publication Date |
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| CN116001751A true CN116001751A (en) | 2023-04-25 |
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| CN202211685633.1A Pending CN116001751A (en) | 2022-12-27 | 2022-12-27 | Scalable pneumatic brake control system and application thereof |
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| Country | Link |
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| CN (1) | CN116001751A (en) |
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