Multi-fault mode identification method and device of swashplate of helicopter

An automatic tilter and pattern recognition technology, applied in the direction of measuring devices, machine/structural component testing, instruments, etc., can solve problems such as fault monitoring and low diagnostic efficiency, improve efficiency, improve real-time performance, and increase safety sexual effect

Inactive Publication Date: 2014-03-26
BEIJING AEROSPACE MEASUREMENT & CONTROL TECH
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Problems solved by technology

It is used to solve the problem of low efficiency in the fault monito

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  • Multi-fault mode identification method and device of swashplate of helicopter
  • Multi-fault mode identification method and device of swashplate of helicopter

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Embodiment Construction

[0022] In order to solve the problem of low efficiency in fault monitoring and diagnosis of helicopter automatic tilters in the prior art, the present invention provides a multi-fault pattern recognition method and device for helicopter automatic tilters. The present invention will be described below in conjunction with the drawings and embodiments Further details. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0023] Such as figure 1 as shown, figure 1 It is a structural schematic diagram of a multi-fault mode recognition device for a helicopter automatic tilter according to an embodiment of the present invention.

[0024] The device may include bearings, one or more sensors, signal conditioners equal to the number of sensors, analog-to-digital converters (A / D converters), digital signal processors (Digital Signal Processing, DSP), timing and logic controllers (Comple...

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Abstract

The invention discloses a multi-fault mode identification method and device of a swashplate of a helicopter. The multi-fault mode identification method comprises the steps that analog quantity signals collected in real time are pre-processed to obtain real-time data corresponding to the analog quantity signals; one or more time domain features in the real-time data are extracted; by comparing each time domain feature with a time domain feather threshold range corresponding to the time domain feature, one or more suspected faults are determined; based on the real-time data corresponding to the one or more suspected faults, one or more fault information items are obtained through a pre-trained radial basis function neural network. The multi-fault mode identification method and device of the swashplate of the helicopter improve real-time performance and efficiency of fault monitoring, eliminate potential fault threats, improve safety of automatic inclination, improve the accuracy of fault identification, shorten the time for fault identification and improve efficiency of fault identification.

Description

technical field [0001] The invention relates to the technical fields of measurement and testing, fault diagnosis, etc., in particular to a method and device for identifying multiple fault modes of a helicopter automatic tilter. Background technique [0002] With the opening of the low-altitude field, helicopters will develop rapidly in the fields of rescue, search, aerial photography, and transportation. The automatic tilter is one of the most important components on the helicopter. It is a device that converts the instructions of the driver or autopilot transmitted through the helicopter flight control system into the controlled motion of the rotor blades. Among them, the large bearing is the core component of the automatic tilter, and the collective pitch and periodic pitch control of the rotor must be realized through it. Any failure or failure of the helicopter bearing in operation may lead to failure of the control system, resulting in serious personal injury. and prop...

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Application Information

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IPC IPC(8): G01M13/00G01M13/04
Inventor 熊毅房红征文博武罗凯邓薇王伟李蕊
Owner BEIJING AEROSPACE MEASUREMENT & CONTROL TECH
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