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Leakage fault diagnose method and system thereof for networked three-container water tank system

A three-capacity water tank and fault diagnosis technology, which is applied in the direction of comprehensive factory control, comprehensive factory control, electrical program control, etc.

Active Publication Date: 2013-07-24
TSINGHUA UNIV
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  • Application Information

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Problems solved by technology

But so far, there is no implementation scheme for leakage fault diagnosis using the networked three-capacity water tank system

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  • Leakage fault diagnose method and system thereof for networked three-container water tank system
  • Leakage fault diagnose method and system thereof for networked three-container water tank system
  • Leakage fault diagnose method and system thereof for networked three-container water tank system

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Embodiment Construction

[0072] The present invention provides a relatively systematic leakage fault detection and separation strategy for the networked three-capacity water tank system based on the Internet. Discrete-time linear equations with parameter uncertainty; use the delta function to describe the signal time delay and data loss caused by network transmission; through state augmentation, the target system, network and residual generator can be combined into an overall fault detection system model, the residual generator parameter design problem is transformed into a discrete-time networked system robust filtering problem; by solving a series of linear matrix inequalities, the sufficient conditions for the existence of the residual generator can be obtained, and then its parameters can be obtained; in fault diagnosis In the application stage of the algorithm, the residual error is generated in real time by using the designed residual error generator, and whether the fault occurs is detected by c...

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Abstract

The invention provides a leakage fault diagnose method and a system thereof for a networked three-container water tank system. The method comprises the following steps: step1, solving a residual error generator model according to a three-container water tank model, a network transmission model and a preset condition; step2, carrying out fault detection according to a residual error signal and a residual error evaluation function. According to the invention, an experiment on leakage fault detection is carried out on a real networked three-container water tank system and a good effect is obtained.

Description

technical field [0001] The invention relates to the field of intelligent detection, in particular to a leakage fault diagnosis method and system for a networked three-capacity water tank system. Background technique [0002] With the rapid development of network technology, more and more systems form a closed loop through network channels, and these systems are called networked systems (NSs). NSs have many advantages over traditional systems, such as lower manufacturing costs and energy consumption, easy installation and maintenance, and resource sharing. But at the same time, the introduction of a network with limited bandwidth also brings many problems to the analysis and design of the system, such as data loss, signal time delay, signal quantization, timing disorder, etc. These problems will inevitably lead to system performance degradation. It may even lead to system instability. [0003] At present, the development of fault diagnosis technology is mainly based on the ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/418
CPCY02P90/02
Inventor 何潇周东华王子栋吉吟东刘洋
Owner TSINGHUA UNIV