CN211765473U - Telex brake system of unmanned aerial vehicle - Google Patents
Telex brake system of unmanned aerial vehicle Download PDFInfo
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- CN211765473U CN211765473U CN201922152491.2U CN201922152491U CN211765473U CN 211765473 U CN211765473 U CN 211765473U CN 201922152491 U CN201922152491 U CN 201922152491U CN 211765473 U CN211765473 U CN 211765473U
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Abstract
The utility model discloses an unmanned aerial vehicle telex braking system, including main braking system, backup braking system, emergent braking system, wherein, main braking system, backup braking system can independently accomplish the anti-skidding brake function of left and right wheel, and emergent braking system can accomplish the brake function of left and right wheel; the main brake system comprises a main hydraulic lock, a main brake control valve and a main pressure sensor; the backup brake system comprises a backup hydraulic lock, a backup brake control valve and a backup pressure sensor; the emergency brake system and the backup brake system share the backup brake control valve. This system adopts three redundancy designs in order to improve unmanned aerial vehicle telex braking system's operational reliability, avoids stopping and explodes the tire, effectively improves aircraft safety in utilization.
Description
Technical Field
The utility model relates to an aircraft braking system field, concretely relates to unmanned aerial vehicle telex braking system.
Background
The aircraft brake system is a component of an aircraft take-off and landing system, is an important airborne device, and has the main tasks of shortening the landing and sliding distance of the aircraft, realizing the safe braking of the aircraft, and seriously affecting the safety of the aircraft if the aircraft can work normally. At present, a single set of control system is mostly adopted for an aircraft brake system, redundancy design is not considered or is not enough, when any accessory in the system fails, the aircraft brake system is easy to work abnormally, and faults such as tire burst occur, so that the use safety of the aircraft is seriously influenced.
SUMMERY OF THE UTILITY MODEL
Purpose of the utility model
In order to solve the problem, the utility model provides an unmanned aerial vehicle telex braking system.
Technical solution of utility model
An unmanned aerial vehicle teletransmission brake system comprises a main brake system, a backup brake system and an emergency brake system, wherein the main brake system and the backup brake system can independently complete the anti-skid brake function of a left wheel and a right wheel, and the emergency brake system can complete the brake function of the left wheel and the right wheel; the main brake system comprises a main hydraulic lock, a main brake control valve and a main pressure sensor; the backup brake system comprises a backup hydraulic lock, a backup brake control valve and a backup pressure sensor; the emergency brake system and the backup brake system share the backup brake control valve.
Preferably, the main hydraulic lock and the backup hydraulic lock are both in a one-lock double-valve structure; the outlet of the main hydraulic lock is respectively connected with a main brake control valve for controlling the left and right airplane wheels, the outlet of the backup hydraulic lock is respectively connected with a backup brake control valve for controlling the left and right airplane wheels, the main brake control valve and the backup brake control valve for controlling the left and right airplane wheels are respectively connected with the left and right airplane wheel brake devices, the speed sensor is arranged in the axle of the left and right airplane wheel brake devices, and the main pressure sensor and the backup pressure sensor for controlling the left and right airplane wheels are respectively connected with the left and right airplane wheel brake devices.
Preferably, the brake control system further comprises an anti-skid brake control box, wherein the anti-skid brake control box comprises a main control panel, a backup control panel and an emergency control panel, and the main control panel is connected with a main hydraulic lock, a main brake control valve, a main pressure sensor and a speed sensor; the backup control panel is connected with the backup hydraulic lock, the backup brake control valve and the backup pressure sensor; the emergency control panel is connected with the backup brake control valve; in the normal anti-skid control process, the main control panel, the main brake control valve, the main pressure sensor and the speed sensor are in working states, and the backup control panel is in a hot backup state; when the fault of the main brake system is detected and the backup brake system is normal, the anti-skid control is switched from the main brake system to the backup brake system, so that the system switching of complete functions is realized; when the faults of the main control system, the backup control panel and the backup hydraulic lock are detected and the backup brake control valve is normal, the emergency control system is switched to the emergency control system, and the emergency brake system outputs a constant current to the backup brake control valve through the emergency control panel so as to output brake pressure to the brake device to realize the braking of the airplane wheel.
Preferably, the speed sensor is in the form of a double coil, and is used for a main braking system and a backup braking system respectively.
Preferably, the main pressure sensor and the backup pressure sensor are both physical dual-redundancy structures, and the main pressure sensor is divided into a left main pressure sensor and a right main pressure sensor which respectively control the left airplane wheel and the right airplane wheel; the backup pressure sensor is divided into a left backup pressure sensor and a right backup pressure sensor which respectively control the left airplane wheel and the right airplane wheel.
Preferably, in the main brake system, the output signals of the left pressure sensor and the right pressure sensor are collected in real time and compared; in the backup brake system, one path of pressure signals of the left pressure sensor and the right pressure signal of the backup pressure sensor are used as a main output, the other path of pressure signals are used as a backup of the main output, and when the backup brake system is used, the main output is firstly adopted, and the backup output is adopted after the main output fails.
The utility model has the advantages that: this system adopts three redundancy designs in order to improve unmanned aerial vehicle telex braking system's operational reliability, avoids stopping and explodes the tire, effectively improves aircraft safety in utilization.
Drawings
Fig. 1 is the utility model discloses an unmanned aerial vehicle telex braking system's schematic structure diagram.
Fig. 2 is the utility model discloses an unmanned aerial vehicle telex braking system's electrical connection picture.
Detailed Description
The utility model discloses a realize through following technical scheme.
The utility model provides an unmanned aerial vehicle telex braking system, adopts three redundancy designs, including main braking system, backup braking system, emergent braking system. The main brake system and the backup brake system can independently complete the anti-skid brake function, and the emergency brake system can complete the brake function. The main brake system comprises a main hydraulic lock, a main brake control valve and a main pressure sensor; the backup brake system comprises a backup hydraulic lock, a backup brake control valve and a backup pressure sensor; the emergency brake system and the backup brake system share the backup brake control valve.
In order to reduce the weight of the system, the main hydraulic lock and the backup hydraulic lock are both in a one-lock double-valve structure; the outlet of the main hydraulic lock is respectively connected with a main brake control valve for controlling the left and right airplane wheels, the outlet of the backup hydraulic lock is respectively connected with a backup brake control valve for controlling the left and right airplane wheels, the main brake control valve and the backup brake control valve for controlling the left and right airplane wheels are respectively connected with the left and right airplane wheel brake devices, the speed sensors are installed in the left and right airplane wheel brake devices, and the main pressure sensor and the backup pressure sensor for controlling the left and right airplane wheels are respectively connected with the left and right airplane wheel brake devices.
The anti-skid brake control box comprises a main control panel, a backup control panel and an emergency control panel, wherein the main control panel is connected with a main hydraulic lock, a main brake control valve, a main pressure sensor and a speed sensor; the backup control panel is connected with the backup hydraulic lock, the backup brake control valve and the backup pressure sensor; the emergency control panel is connected with the backup brake control valve; in the normal anti-skid control process, the main control panel, the main brake control valve, the main pressure sensor and the speed sensor are in working states, and the backup control panel is in a hot backup state; when the fault of the main brake system is detected and the backup brake system is normal, the anti-skid control is switched from the main brake system to the backup brake system, so that the system switching of complete functions is realized; when the faults of the main control system, the backup control panel and the backup hydraulic lock are detected and the backup brake control valve is normal, the emergency control system is switched to the emergency control system, and the emergency brake system outputs a constant current to the backup brake control valve through the emergency control panel so as to output brake pressure to the brake device to realize the braking of the airplane wheel.
In order to improve the reliability of the system, the speed sensor adopts an electric dual-redundancy design, and the speed sensor is designed into a double-coil form and is respectively used for a main braking system and a backup braking system.
The pressure sensor is a feedback component of the system pressure, and the response time, the precision and other performance indexes of the pressure sensor are related to whether the system pressure can be timely and accurately reflected, so that the braking software can accurately control the braking pressure. In order to improve the reliability of the system, the pressure sensor is designed by physical dual redundancy and is provided with two pressure sensing elements and two processing circuits, and two paths of signals are output independently. The main and backup brake systems are respectively provided with an independent left and right pressure sensor, which are divided into a main pressure sensor left side, a main pressure sensor right side, a backup pressure sensor left side and a backup pressure sensor right side, and each pressure sensor is designed by physical dual redundancy. Meanwhile, in order to further improve the accuracy and reliability of pressure signal acquisition, a non-similar design is adopted for processing the pressure signals output by the pressure sensor, namely, different processing modes are adopted for the pressure signals of the main brake system and the backup brake system: the self-monitoring mode is adopted for the left and right pressure signals in the main brake system, and the main and standby modes are adopted in the backup brake system. In the main brake system, 2 paths of output signals of the pressure sensor are collected in real time and compared. In the backup brake system, one path of output is used as main output, the other path of output is used as backup of the main output, and when in use, the main output is firstly adopted, and a backup output mode is adopted after the main output fails.
The above embodiments are only for illustrating the technical conception and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the same, so as not to limit the protection scope of the present invention, and all the equivalent changes or modifications made according to the spirit of the present invention should be covered in the protection scope of the present invention.
Claims (6)
1. The utility model provides an unmanned aerial vehicle telex braking system which characterized in that: the emergency braking system can finish the braking function of the left airplane wheel and the right airplane wheel independently; the main brake system comprises a main hydraulic lock, a main brake control valve and a main pressure sensor; the backup brake system comprises a backup hydraulic lock, a backup brake control valve and a backup pressure sensor; the emergency brake system and the backup brake system share the backup brake control valve.
2. The telebrake system of claim 1, wherein: the main hydraulic lock and the backup hydraulic lock are both in a one-lock double-valve structure; the outlet of the main hydraulic lock is respectively connected with a main brake control valve for controlling the left and right airplane wheels, the outlet of the backup hydraulic lock is respectively connected with a backup brake control valve for controlling the left and right airplane wheels, the main brake control valve and the backup brake control valve for controlling the left and right airplane wheels are respectively connected with the left and right airplane wheel brake devices, the speed sensor is arranged in the axle of the left and right airplane wheel brake devices, and the main pressure sensor and the backup pressure sensor for controlling the left and right airplane wheels are respectively connected with the left and right airplane wheel brake devices.
3. The telebrake system of claim 2, wherein: the anti-skid brake control box comprises a main control panel, a backup control panel and an emergency control panel, wherein the main control panel is connected with a main hydraulic lock, a main brake control valve, a main pressure sensor and a speed sensor; the backup control panel is connected with the backup hydraulic lock, the backup brake control valve and the backup pressure sensor; the emergency control panel is connected with the backup brake control valve; in the normal anti-skid control process, the main control panel, the main brake control valve, the main pressure sensor and the speed sensor are in working states, and the backup control panel is in a hot backup state; when the fault of the main brake system is detected and the backup brake system is normal, the anti-skid control is switched from the main brake system to the backup brake system, so that the system switching of complete functions is realized; when the faults of the main control system, the backup control panel and the backup hydraulic lock are detected and the backup brake control valve is normal, the emergency control system is switched to the emergency control system, and the emergency brake system outputs a constant current to the backup brake control valve through the emergency control panel so as to output brake pressure to the brake device to realize the braking of the airplane wheel.
4. The telebrake system of claim 2, wherein: the speed sensor adopts a double-coil form and is respectively used for a main braking system and a backup braking system.
5. The telebrake system of claim 2, wherein: the main pressure sensor and the backup pressure sensor are both physical dual-redundancy structures, and the main pressure sensor is divided into a left main pressure sensor and a right main pressure sensor which respectively control the left airplane wheel and the right airplane wheel; the backup pressure sensor is divided into a left backup pressure sensor and a right backup pressure sensor which respectively control the left airplane wheel and the right airplane wheel.
6. The telebrake system of claim 5, wherein: in a main brake system, acquiring output signals of a left pressure sensor and a right pressure sensor of the pressure sensor in real time and comparing the output signals; in the backup brake system, one path of pressure signals of the left pressure sensor and the right pressure signal of the backup pressure sensor are used as a main output, the other path of pressure signals are used as a backup of the main output, and when the backup brake system is used, the main output is firstly adopted, and the backup output is adopted after the main output fails.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201922152491.2U CN211765473U (en) | 2019-12-04 | 2019-12-04 | Telex brake system of unmanned aerial vehicle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922152491.2U CN211765473U (en) | 2019-12-04 | 2019-12-04 | Telex brake system of unmanned aerial vehicle |
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| CN211765473U true CN211765473U (en) | 2020-10-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112721885A (en) * | 2020-12-30 | 2021-04-30 | 中国航空工业集团公司沈阳飞机设计研究所 | Brake control system based on data reconstruction |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112721885A (en) * | 2020-12-30 | 2021-04-30 | 中国航空工业集团公司沈阳飞机设计研究所 | Brake control system based on data reconstruction |
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