Automatic braking method and device for plane

An automatic braking and aircraft technology, applied in automatic starting devices, aircraft braking arrangements, brakes, etc., can solve the problems of inability to decelerate at a constant deceleration rate, and the mechanism is cumbersome, and achieve the effect of reducing braking delay, improving comfort, and working smoothly.

Active Publication Date: 2011-06-15
XIAN AVIATION BRAKE TECH
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AI Technical Summary

Problems solved by technology

[0005] In order to overcome the shortcomings of the prior art that cannot decelerate at a constant deceleration rate in a non-slip state and the mechanism is cumbersome, the invention provides an automatic braking method for an aircraft, which does not require a special automatic braking anti-skid valve, automatic braking control unit, and automatic braking cut-off valve. and other accessories, saving development costs, reducing the weight of the brake system, and can adopt constant deceleration control, so that the brake system works smoothly

Method used

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  • Automatic braking method and device for plane
  • Automatic braking method and device for plane

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Embodiment Construction

[0043] Method example:

[0044] Step 1: Determine the difference between the target deceleration rate and the aircraft deceleration rate.

[0045] The automatic brake selection switch should be set at least three landing gears according to the specification. There are five automatic brake selection switches in this system, namely LO, MED, HI, OFF and RTO. LO, MED and HI are used for landing brakes, corresponding to Different deceleration rate values ​​can be formulated according to the needs of the system. During the actual landing process, the driver can choose between three gears; RTO is used to stop the use of the take-off brake, and corresponds to the deceleration that can be achieved under the maximum brake pressure of the system rate; OFF is used to close the automatic braking function. The deceleration values ​​corresponding to each gear in this case are: LO=1.79; MED=2.33; HI=3.40; RTO corresponds to the maximum available deceleration rate.

[0046] First, the driver...

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Abstract

The invention discloses an automatic braking method and device for a plane. The method comprises the following steps: determining the brake current of a servo valve according to a difference value between a target deceleration rate and a plane deceleration rate; determining whether the braking slides or not, and calculating the anti-slide current; acquiring the brake pressure of a plane braking system according to the brake current and the anti-slide current; and repeating the steps until the plane is stopped completely. By adopting constant speed reducing control, the invention ensures stable work of the braking system, so the comfort of people on a plane is improved, the safety of plane landing brake is improved, the accessory composition is reduced, the weight is lightened, the fundamental reliability is improved, and the development period is shortened.

Description

technical field [0001] The invention relates to an aircraft braking method, and also relates to a device for realizing the method. Background technique [0002] The automatic braking system and control method are widely used in Boeing series aircraft and Airbus series aircraft in passenger aircraft. In US Patent No. 5024491, an aircraft automatic braking system including a wheel speed responsive controller is disclosed. Using the system, it automatically applies and regulates brake pressure after the aircraft touches down, slowing the aircraft at a preselected deceleration rate. The wheel speed signal is processed by the wheel speed logic circuit and then input to the automatic braking control circuit. When other signals provided meet the specified conditions, the automatic braking control circuit logic circuit makes the ramp generator circuit generate a control signal, which is connected in parallel with the anti-skid system , to control the antiskid valve drive current b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60T7/12B60T8/17B60T8/32B64C25/42
CPCY02T50/44Y02T50/40
Inventor 逯九利王红玲
Owner XIAN AVIATION BRAKE TECH
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