Fault detection method of inertial system state selector

A state selection, inertial navigation system technology, applied in the direction of instruments, measuring devices, navigation through speed/acceleration measurement, etc., can solve the failure of accurate isolation and positioning, the inability to judge and distinguish the output switching value of the state selector, troublesome maintenance, etc. problems, to facilitate fault location, reduce maintenance time, and ensure normal use

Active Publication Date: 2010-12-29
中国航空工业集团有限公司
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Problems solved by technology

[0005] In the original design of the inertial navigation system, there was no fault detection and isolation design for the working state of the state selector, resulting in the inability to judge and distinguish the input switching value of the inertial navigation components when the sys

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  • Fault detection method of inertial system state selector
  • Fault detection method of inertial system state selector
  • Fault detection method of inertial system state selector

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[0015] As a replaceable component in the field, the state selector requires fault detection and isolation of the state selector, while the state selector of the inertial navigation system is a mechanical contact switch, and it is impossible to use its own signal to achieve fault detection and isolation. Relying on the addition of detection circuits will bring about hardware resource overhead and design complexity, which will reduce the inherent reliability of the inertial navigation system. In order to solve this problem, a detection method based on the uniqueness of the inertial navigation system's state is proposed. Through the steps of detecting the input switch channel of the inertial navigation component and the output switch value of the state selector, the uniqueness of the inertial navigation system's working state is detected. To realize the detection and isolation of the inertial navigation system state selector. See the flow chart of its detection figure 2 : The de...

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Abstract

The invention belongs to the mechanical equipment and relates to a fault detection method of inertial system state selector. The invention can well realize the detection and the isolation of an inertial component input switching value channel and a state selector output switching value without adding any hardware resource in the inertial system through respectively detecting the inertial component input switching value channel and the state selector output switching value so as to make the fault positioning of the outfield convenient. In the invention, the faults of the state selector and the inertial component are distinguished; for the outfield fault condition, the maintenance operation of changing the component for twice is replaced by a single operation of shooting the trouble, therefore, the maintenance time of the inertial system is decreased. The invention guarantees the normal use of the plane.

Description

technical field [0001] The invention belongs to airborne equipment and relates to a fault detection method for an inertial navigation system state selector. Background technique [0002] The working state of the inertial navigation system includes preparation, alignment, navigation, satellite and test, etc. In the inertial navigation system equipped with a state selector, the state selector is used to select the working state of the inertial navigation system. The state selector is a field replaceable part of the inertial navigation system. [0003] The design principle of the state selector is to switch between different working states of the inertial navigation system by turning on and off the band switch. The inertial navigation system judges the state selector as an input switch. The general design state is that the grounding of the band switch is effective, and the disconnection is invalid. Its schematic diagram is shown in 1. [0004] The state selector is a mechan...

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Application Information

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IPC IPC(8): G01C25/00G01C21/16
Inventor 樊亮莫勇
Owner 中国航空工业集团有限公司
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