On-line fault diagnosis device and on-line fault diagnosis method of simple-type environmental control system

Abstract

The invention discloses an on-line fault diagnosis device of a simple-type environmental control system, which comprises temperature sensors A, B, C and D and a fault display, wherein the temperature sensors A and B are respectively arranged at a hot side inlet and a hot side outlet of a heat exchanger; the temperature sensors C and D are respectively positioned at an inlet and an outlet of a turbine; and the temperature sensors A, B, C and D transmit a measured temperature signal to the fault display. An on-line fault diagnosis method of the simple-type environmental control system comprises the following steps: 1, constructing the on-line fault diagnosis device of the simple-type environmental control system; and 2, establishing and training a BP neural network for fault diagnosis. The diagnosis device and the diagnosis method are mainly applied to the on-line fault diagnosis of the simple-type environmental control system, can diagnose typical faults of the simple-type environmental control system in an on-line mode in the flight process to enable pilots to deal with the faults in time and avoid accidents. The on-line fault diagnosis device has few accessories, simple structure, light weight and convenient installation, and is easy to be installed on the conventional simple-type environmental control system.

Description

technical field [0001] The invention relates to an online fault diagnosis device and a diagnosis method of a simple environmental control system, belonging to the fault diagnosis technology of an aircraft environment control system. Background technique [0002] The simple environmental control system is a typical fighter environment control system. Its task is to adjust the air supply temperature of the cockpit or equipment compartment under various flight conditions, create a safe and comfortable working environment for the pilot, and ensure the reliable operation of the airborne equipment. . When the simple environmental control system fails, it needs to be diagnosed and dealt with in time to improve the reliability of the system, ensure the safety of the passengers and the normal operation of the airborne equipment. [0003] The existing environmental control system fault diagnosis methods mostly use the fault tree analysis method, that is, the analysis method of the sy...

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Problems solved by technology

[0004] The above methods are all researches on the fault diagnosis methods of the environmental control system or its specific components, but no implementation scheme is given from the perspective of the actual simple environmental control system, and the fault diagnosis effect is not good

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