CN109515698A - A kind of various dimensions constant speed antiskid control system - Google Patents
A kind of various dimensions constant speed antiskid control system Download PDFInfo
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- CN109515698A CN109515698A CN201810223719.XA CN201810223719A CN109515698A CN 109515698 A CN109515698 A CN 109515698A CN 201810223719 A CN201810223719 A CN 201810223719A CN 109515698 A CN109515698 A CN 109515698A
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- brake
- control box
- antiskid
- various dimensions
- wheel
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C25/00—Alighting gear
- B64C25/32—Alighting gear characterised by elements which contact the ground or similar surface
- B64C25/42—Arrangement or adaptation of brakes
- B64C25/44—Actuating mechanisms
- B64C25/46—Brake regulators for preventing skidding or aircraft somersaulting
-
- 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
- B60T8/1703—Braking or traction control means specially adapted for particular types of vehicles for aircrafts
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transportation (AREA)
- Regulating Braking Force (AREA)
Abstract
The invention discloses a kind of various dimensions constant speed antiskid control systems, belong to airplane brake system technical field.The on-off formula machinery inertial anti-skid brake system (ABS) of original aircraft is improved to analog electronic anti-skid braking system; using advanced III antiskid brake control principle of MARK-; utilize electrifies technique; with the permanent rate of deceleration control strategy of " speed difference+PBM "; establish " the anti-shape of a saddle " brake pressure a --- rate curve; and the functions such as ground protection are increased, Fit Models range is wide, machine dimension is more, solves the lower problem of man-machine efficacy matching in inertia anti-skid brake system (ABS).
Description
Technical field
The invention belongs to airplane brake system technical fields, are related to a kind of various dimensions perseverance rate of deceleration anti-sliding control brake system
Technology.
Background technique
Original airplane brake system is typical on-off formula machinery inertial anti-skid brake system (ABS), in normal braking system
Using the inertia non-skid braking device of I type of MARK, the characteristics of this system is clutch type, by relay operation electromagnetism
Valve.One inertial sensor is installed, when wheel skids, inertial sensor issues the electricity that signal connects solenoid valve on each wheel
The high-voltage oil liquid on road, the chamber that brakes is let go, and realization gets off the brakes, and is eliminated wheel and is skidded.This system biggest advantage is reliability
Height, but braking efficiency is relatively low.20~30km/h is greater than in aircraft running speed using this brake system inertial sensor
In the case where, negative angle acceleration value is not less than 150r/s2(corresponding 3~5r/s of wheel revolving speed), could accurately issue and get off the brakes
Signal prevents wheel from dragging tire.Thus, only after aircraft landing, wheel is sufficiently rotated, and can just step on brake pedal
Plate.
From after delivery user's use in 2013, multi rack time occurs main wheel in landing period and blows out aircraft accident sign aircraft
It waits, causes the different degrees of damage of aircraft.Trace it to its cause is to be landed or pedaled rudder straps brake due to strap brake, that is to say, that is flown
The shortcoming of this inertia anti-skid brake system (ABS) of machine is that man-machine efficacy matching is lower.
Summary of the invention
Goal of the invention: the present invention overcomes the lower deficiency of man-machine efficacy matching in inertia anti-skid brake system (ABS) technology,
Provide a kind of brake system design method with ground protection function.Man-machine efficacy is improved, is largely avoided artificial
Aircraft accident sign caused by factor is suitble to a variety of aircraft modified brake system.
Technical solution: in order to solve the above-mentioned technical problem, the present invention is achieved by the following technical solutions: by aircraft
On-off formula machinery inertial anti-skid brake system (ABS) is improved to analog electronic anti-skid braking system, and increases ground protection function.
The various dimensions perseverance rate of deceleration anti-sliding control brake system is by velocity sensor, anti-sliding control box, Electric hydraulic pressure servo valve, Air-Ground
Switch composition.
When brake system works, the signal whether undercarriage is grounded is passed through electricity by the Air-Ground switch being mounted on undercarriage
Cable is transmitted to anti-sliding control box, while being mounted on the velocity sensor in brake machine wheel and transmitting the speed signal of wheel by cable
Anti-sliding control box is given, after the anti-sliding control box being mounted in landing gear compartment is connected to the signal of Air-Ground switch and velocity sensor, warp
Output electric current is calculated, electric current is transmitted to the Electric hydraulic pressure servo valve for being mounted on and having led in cabin, Electric hydraulic pressure servo valve root by cable
Corresponding pressure is exported according to received electric current, realizes antiskid brake.
The main component anti-sliding control box of anti-skid brake system (ABS), anti-sliding control box are main in electronic anti-skid braking system
Attachment is controlled, for adjusting eight main wheel brake pressures, antiskid function is completed in principal security.Eight main wheels are divided into a left side
Before, it is left back, right after, it is right before four sides control respectively, inside and outside two wheel is divided in every side.When wheel any in either side is in sliding shape
Can quickly be detected when state, and using automatically control by the way of electrohydraulic servo valve is adjusted, with reach improve braking efficiency,
Shorten aircraft landing ground run distance, prevent wheel from skidding, reduce tire wear, guarantees the purpose that aircraft safety lands.In addition it
Also with protection, ground protection, quiet brake defencive function between side.
Advantageous effects
(1) electrifies technique is used, traditional control mode is changed.The technology for solving brake control law complexity is difficult
Topic has the characteristics that control precision height, fast response time, replaceability is good, maintenance and debugging is convenient；
(2) with the permanent rate of deceleration control strategy of " speed difference+PBM ", operation is carried out to the wheel speed signal of input, is adopted
It is designed with the PID of multiple speed difference thresholding, different sliding velocities is provided to different velocity shootings, improve system to runway
Adaptability, enhance safety, reliability；
(3) " the anti-shape of a saddle " brake pressure a --- rate curve is established, traditional " shape of a saddle " characteristic is solved and exists
High regime and low speed segment brake torque may be excessive, and pressure rises slowly due to middling speed section is adjusted partially pressure, influences to make
The System design technology difficult point of efficiency of movement；
(4) functions such as ground protection are increased, keep the system function more complete.Aircraft is completely eliminated to blow out inducement, it is full
Foot pilot's man-machine efficacy requirement, improves airplane brake system safety, maintainability；
(5) Fit Models range is wide, machine dimension is more.The technology is not only applicable in Special Aircraft, electronic anti-breaking brake control
Principle processed can also be used in other machines of domestic active service.The system Fit Models range is wider, belongs to various dimensions machine and is applicable in
Electronic anti-skid braking system.
Detailed description of the invention
Fig. 1 is a kind of various dimensions constant speed antiskid control system；
Fig. 2 is system functional block diagram.
1. Air-Ground switch, 2. Electric hydraulic pressure servo valves, 3. anti-sliding control boxes, 4. velocity sensors.
Specific embodiment
Present invention is further described in detail with specific embodiment with reference to the accompanying drawing:
1, ground protection function
Before aircraft landing (in the sky), gear down and after locking, landing gear switch is connected, system power supply is given.It drives
Member connects Anti-skid switch, system work.In an ON state, anti-sliding control box 3 exports maximum current to electricity to landing switch 1 at this time
Hydraulic coupling servo valve 2 makes Electric hydraulic pressure servo valve 2 export brake pressure and is less than 1MPa.Even if driver accidentally steps on pedal in the sky,
System earth defencive function guarantees that Electric hydraulic pressure servo valve 2 exports brake pressure and is less than 1MPa, avoids strap brake landing and causes
The danger blown out.
After ground contact, the Air-Ground switch being mounted on main unit of landing gear is gone off by connection or wheel speed is big
When certain value, anti-sliding control box 3 exports quiescent current to Electric hydraulic pressure servo valve 2, and Electric hydraulic pressure servo valve 2 is made to be in brake
Channel status, driver step on the implementable normal braking of pedal.
2, antiskid brake function
Antiskid control system is formed by velocity sensor 4, anti-sliding control box 3, Electric hydraulic pressure servo valve 2, makes normal braking
System has antiskid function.Two brake machine wheels are front side before same main landing gear, behind two brake machine wheels be rear side, by
One channel of Electric hydraulic pressure servo valve 2 controls front side, another channel control rear side.Velocity sensor 4 incudes brake machine wheel
Speed gives wheel speed signal to anti-sliding control box 3, and anti-sliding control box 3 is compared ipsilateral two wheel speed, if
The brake pressure that driver's foot is stepped on makes brake torque caused by wheel be higher than the floor binding force between wheel and runway at that time
Square, when wheel generates skidding in ipsilateral two wheel, anti-sliding control box 3 according to " speed difference+PBM " PID control strategy,
A control signal is exported to Electric hydraulic pressure servo valve 2, the brake pressure of Electric hydraulic pressure servo valve output is adjusted, keeps wheel speed extensive
It is multiple, it releases wheel and skids deeply, mitigate tire wear, prevent from blowing out, guarantee safety, achieve the purpose that most preferably to brake.
3, brake system can complete to power on BIT, maintenance BIT and landing BIT, and brake system fault message is transmitted to comprehensive
Close display equipment, eventually by synthesis display equipment by airplane brake system malfunction to pilot explicitly to indicate, make
It is simple and direct intuitive with facilitating.
4, anti-sliding control box is the main control attachment in electronic anti-skid braking system, for adjusting eight host wheel brakes
Antiskid function is completed in pressure, principal security.By eight main wheels be divided into it is left front, left back, right after, it is right before four sides control respectively, often
Inside and outside two wheel is divided in side.It can quickly be detected when wheel any in either side is in sliding mode, and using automatic control
Electrohydraulic servo valve is adjusted in mode, to reach raising braking efficiency, shortening aircraft landing ground run distance, prevent wheel from beating
Sliding, reduction tire wear, guarantees the purpose that aircraft safety lands.In addition it also has protection, ground protection, the protection of quiet brake between side
Function.Its inside has fault detection link simultaneously, if the coil of wheel spin-up transducer, electrohydraulic servo valve is opened a way
Or short circuit, and master control channel or the failure of ground protection function of control box itself, it can be detected, use indicator light
The mode of display notifies driver.
In brake process, anti-sliding control box establishes " the anti-shape of a saddle " brake pressure a --- rate curve, than passing
System " shape of a saddle " brake pressure --- rate curve is more efficient.
5, analog electronic anti-breaking is pressed with the permanent rate of deceleration control strategy of " speed difference+PBM ", " the anti-shape of a saddle " brake
Power --- rate curve and ground protection function.
Claims (2)
1. a kind of various dimensions constant speed antiskid control system, it is characterised in that: by the on-off formula machinery inertial antiskid brake of aircraft
System is improved to analog electronic anti-skid braking system, and increases ground protection function；The anti-slip control of the various dimensions perseverance rate of deceleration
Brake system processed is made of velocity sensor, anti-sliding control box, Electric hydraulic pressure servo valve, Air-Ground switch；
The signal whether undercarriage is grounded, is transmitted to anti-sliding control box by cable, together by the Air-Ground switch being mounted on undercarriage
When the velocity sensor that is mounted in brake machine wheel the speed signal of wheel is sent to anti-sliding control box by cable, be mounted on
After anti-sliding control box in landing gear compartment is connected to the signal of Air-Ground switch and velocity sensor, it is computed output electric current, electric current is logical
It crosses cable and is transmitted to the Electric hydraulic pressure servo valve for being mounted on and having led in cabin, Electric hydraulic pressure servo valve based on the received answer by electric current output phase
Pressure, realize antiskid brake.
2. a kind of various dimensions constant speed antiskid control system according to claim 1, it is characterised in that: anti-sliding control box pair
Brake machine wheel is using the form controlled respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810223719.XA CN109515698A (en) | 2018-03-16 | 2018-03-16 | A kind of various dimensions constant speed antiskid control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810223719.XA CN109515698A (en) | 2018-03-16 | 2018-03-16 | A kind of various dimensions constant speed antiskid control system |
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| CN109515698A true CN109515698A (en) | 2019-03-26 |
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ID=65769820
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| CN201810223719.XA Pending CN109515698A (en) | 2018-03-16 | 2018-03-16 | A kind of various dimensions constant speed antiskid control system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110450768A (en) * | 2019-08-13 | 2019-11-15 | 成都飞机工业（集团）有限责任公司 | A kind of small-sized fixed-wing unmanned plane brake anti-skid control method of low cost |
| CN110543189A (en) * | 2019-09-25 | 2019-12-06 | 成都飞机工业（集团）有限责任公司 | ground guide control method for fixed-wing unmanned aerial vehicle |
| CN116901911A (en) * | 2023-09-11 | 2023-10-20 | 四川腾盾科技有限公司 | Design method of front three-point unmanned aerial vehicle brake autonomous pressure control logic |
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| US20150203194A1 (en) * | 2014-01-22 | 2015-07-23 | The Boeing Company | Optimized Real-Time Antiskid Control Initialization for Travel Surfaces as a Function of Wheel Spinup |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110450768A (en) * | 2019-08-13 | 2019-11-15 | 成都飞机工业（集团）有限责任公司 | A kind of small-sized fixed-wing unmanned plane brake anti-skid control method of low cost |
| CN110450768B (en) * | 2019-08-13 | 2021-08-03 | 成都飞机工业（集团）有限责任公司 | Low-cost small-sized fixed wing unmanned aerial vehicle brake anti-skidding control method |
| CN110543189A (en) * | 2019-09-25 | 2019-12-06 | 成都飞机工业（集团）有限责任公司 | ground guide control method for fixed-wing unmanned aerial vehicle |
| CN110543189B (en) * | 2019-09-25 | 2022-01-25 | 成都飞机工业（集团）有限责任公司 | Ground guide control method for fixed-wing unmanned aerial vehicle |
| CN116901911A (en) * | 2023-09-11 | 2023-10-20 | 四川腾盾科技有限公司 | Design method of front three-point unmanned aerial vehicle brake autonomous pressure control logic |
| CN116901911B (en) * | 2023-09-11 | 2023-12-22 | 四川腾盾科技有限公司 | Design method of front three-point unmanned aerial vehicle brake autonomous pressure control logic |
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Application publication date: 20190326 |