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Electro-hydrostatic brake control device for unmanned aerial vehicle and dynamic pressure maintaining method

A technology of brake control and electromechanical hydrostatic, which is applied in the field of aircraft brake control system, can solve the problems of poor reliability, complex structure and high cost of UAV electrostatic hydraulic actuator, and achieve short pressure building time, low power consumption and high response The effect of shortening the time

Active Publication Date: 2021-11-30
XIAN MICROELECTRONICS TECH INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the disadvantages of complex structure, high cost, and poor reliability of the UAV electrostatic hydraulic actuator in the above-mentioned prior art, and provide a UAV electrohydrostatic brake control device and a dynamic pressure maintaining method

Method used

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  • Electro-hydrostatic brake control device for unmanned aerial vehicle and dynamic pressure maintaining method
  • Electro-hydrostatic brake control device for unmanned aerial vehicle and dynamic pressure maintaining method
  • Electro-hydrostatic brake control device for unmanned aerial vehicle and dynamic pressure maintaining method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] An unmanned aerial vehicle electrostatic hydraulic brake control device, such as figure 2 As shown, it includes a chassis 1, a controller 8, a motor 10, a gear assembly and a hydraulic assembly;

[0039] The controller 8 is installed inside the chassis 1, and a motor 10 is installed on the side of the controller 8, and the motor 10 is electrically connected to the controller 8; the hydraulic assembly includes a hydraulic cylinder 6 and a test chamber 5, and the hydraulic cylinder 6 is installed through the chassis 1. The cylinder 6 is provided with a piston 13, and the test cavity 5 is installed on the upper part of the hydraulic cylinder 6 and connected with the hydraulic cylinder 6; the motor 10 is connected with the piston 13 through a gear assembly.

Embodiment 2

[0041] Except for the following content, all the other contents are the same as in Example 1.

[0042] A connector 9 is left on the outside of the controller 8, and the leads of the motor 10, temperature sensor 16 and pressure sensor 17 of the electro-hydraulic actuator are connected to the connector 9. The controller 8 and the electro-hydraulic actuator are installed in the same case 1, and the electrical connection and separation can be conveniently performed by plugging in the connector 9. There is a circular connector 2 outside the brake control device for power supply and communication; the connector 2 is electrically connected to the controller 8 and the motor 10 respectively.

[0043] The test chamber 5 is provided with an oil outlet port 4 and an oil replenishment port 3. The oil outlet port 4 is used to connect a hose to send out hydraulic oil; the oil replenishment port 4 is used to connect an oil injection pipe to replenish hydraulic oil; the ball screw pair 12 The...

Embodiment 3

[0045] Except for the following content, all the other contents are the same as in Example 1.

[0046] like image 3 As shown, the test cavity 5 and the hydraulic cylinder 6 are sealed by an O-shaped rubber ring to form a connector, and at the same time provide a channel for the oil supply interface 3 . The hydraulic assembly also includes a temperature sensor 16 and a pressure sensor 17; both the temperature sensor 16 and the pressure sensor 17 are installed in the test chamber 5 for detecting oil pressure and oil temperature. The test chamber 5 is provided with an oil outlet interface 4 and an oil supply interface 3. In order to ensure the oil pressure dynamic seal between the outer circle of the piston and the inner wall of the hydraulic cylinder, 4 O-rings are designed on the piston 13; The oil and oil supply port 3 adopts a check valve and sealing design; the oil outlet port 4 adopts a standard 74° conical sealing design, which is convenient for connecting hoses. An oil...

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Abstract

The invention discloses an electro-hydrostatic brake control device for an unmanned aerial vehicle and a dynamic pressure maintaining method, belongs to the technical field of aircraft brake control systems, and adopts an integrated electro-hydrostatic brake technology, a piston, a hydraulic cylinder structure and a dynamic pressure maintaining strategy to realize rapid and accurate control of the brake pressure of the unmanned aerial vehicle. The functions of slow braking and snub braking are achieved; the characteristics of long-time pressure maintaining and low power consumption are realized; the device has the advantages of short pressure building time and high in-place pressure precision; the response time of the novel brake control device is shortened by more than 30% compared with that of a previous pump type hydraulic brake control device. A traditional EHA hydraulic transmission structure is abandoned, and the problems that an existing electro-hydrostatic actuator is large in size, poor in maintainability, low in reliability and the like are effectively solved.

Description

technical field [0001] The invention belongs to the technical field of aircraft brake control systems, and relates to an unmanned aerial vehicle electrostatic fluid brake control device and a dynamic pressure maintaining method. Background technique [0002] The brake control system is an important part of the aircraft take-off and landing system, and plays an important role in the take-off and safe landing of the aircraft. It is an important system to ensure the safe operation of the aircraft, and its working performance directly endangers the flight safety. [0003] The existing UAV braking control system mostly adopts Electrostatic Hydraulic Actuator (EHA), which is mainly composed of motor, quantitative pump, accumulator, check valve, overflow valve, fuel tank, reversing valve, hydraulic cylinder, pressure sensors etc. This pump-type electro-hydraulic braking system uses a hydraulic pump and a high-pressure accumulator as a hydraulic power source to adjust the hydrauli...

Claims

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Application Information

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IPC IPC(8): B64C25/44B60T8/17B60T13/12B60T13/74
CPCB64C25/44B60T8/1703B60T13/12B60T13/741Y02T50/40
Inventor 赵亚妮窦森代永波
Owner XIAN MICROELECTRONICS TECH INST
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