An auxiliary power unit overrun detection device and method

A technology for auxiliary power devices and detection devices, which is applied to aircraft power devices, auxiliary power equipment, transportation and packaging, etc., can solve problems such as being in the blank, achieve high control reliability, reduce complexity, and solve super The effect of re-detecting the control problem

Active Publication Date: 2021-02-26
XIAN AVIATION COMPUTING TECH RES INST OF AVIATION IND CORP OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the research and development of auxiliary power units in China is still in its infancy, and the control and protection technology of auxiliary power units has just entered into engineering applications, and the research on related technologies in the early stage is still blank

Method used

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  • An auxiliary power unit overrun detection device and method
  • An auxiliary power unit overrun detection device and method
  • An auxiliary power unit overrun detection device and method

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Embodiment Construction

[0040] The present invention will be further described below in conjunction with the accompanying drawings.

[0041] from figure 1 , figure 2 It can be seen that the over-rotation detection device of the auxiliary power unit of the present invention mainly includes a speed signal conditioning circuit, two independent hardware over-rotation detection circuits and a CPU software over-rotation detection unit. The speed signal conditioning circuit is used to receive the two-way speed signal output by the auxiliary power unit and condition the two-way speed signal into a square wave signal that can be collected by the hardware over-rotation detection circuit and the CPU software over-rotation detection unit; the output terminal of the speed signal conditioning circuit They are respectively connected to the input ends of two independent hardware over-rotation detection circuits and the CPU software over-rotation detection unit; the output ends of the hardware over-rotation detecti...

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Abstract

The invention belongs to the field of aviation power control, and relates to an auxiliary power unit super-rotation detection device and method. In order to effectively realize the over-rotation detection protection control of the APU, the device includes a speed signal conditioning circuit, two independent hardware over-rotation detection circuits and a CPU software over-rotation detection unit; Hardware over-rotation detection circuit and CPU software over-rotation detection unit; when either the CPU software over-rotation detection unit or the hardware over-rotation detection circuit detects over-rotation of the auxiliary power unit, the over-rotation control signal is output to control and cut off the fuel of the auxiliary power unit The supply of solenoid valves can ensure that the auxiliary power unit can reliably and accurately realize over-rotation protection control within the full working envelope.

Description

technical field [0001] The invention belongs to the field of aerodynamic control, and relates to a gas turbine engine, especially an overrotation detection and control method for an auxiliary power unit. Background technique [0002] Auxiliary Power Unit (APU) is a small gas turbine engine, which is mainly used to provide bleed air for the starting of the main engine of the aircraft and the environmental control system, and can provide shaft power for the aircraft power generation system through the accessory gearbox. When the aircraft is on the ground, the APU can replace the bulky air source vehicle and power supply vehicle; during the take-off process, the power of the main engine can be used to accelerate the climb to improve the take-off performance of the aircraft; after the aircraft lands, the main engine can be shut down in time , to save fuel and reduce airport noise. Therefore, modern large and medium-sized aircraft are all equipped with APU. [0003] The design ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B64D41/00B64D31/00
CPCB64D31/00B64D41/00
Inventor 杨恒辉张宝升张弛王超赵小勇徐杰
Owner XIAN AVIATION COMPUTING TECH RES INST OF AVIATION IND CORP OF CHINA
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