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A Fault Detection Method for Self-triggering Transmission Systems Based on Convex Polytope Theory

A fault detection and convex multicellular technology, which is applied in general control systems, control/regulation systems, test/monitoring control systems, etc., can solve problems such as system fault detection that cannot interfere with input and faults, and prolong the service life of equipment , Reduce the frequency of data transmission, reduce the effect of energy consumption

Active Publication Date: 2021-07-23
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Abstract
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Problems solved by technology

However, existing methods do not perform well in fault detection for systems with disturbing inputs and faults based on self-triggering transfer mechanisms

Method used

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  • A Fault Detection Method for Self-triggering Transmission Systems Based on Convex Polytope Theory
  • A Fault Detection Method for Self-triggering Transmission Systems Based on Convex Polytope Theory
  • A Fault Detection Method for Self-triggering Transmission Systems Based on Convex Polytope Theory

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Embodiment

[0198] Example: The DTS200 three-capacity water tank system produced by the German Amira Automation Company is a multi-input multi-output nonlinear experimental system, and the physical figure of the three-capacity water tank is as follows figure 2shown. The experimental platform includes three cylindrical glass water tanks, which are water tanks 2, 3, and 1 from right to left. Any two water tanks are connected by connecting pipes equipped with ball valves, and water tank 2 is connected to the bottom reservoir. The water in the reservoir can directly flow to the storage tank through the connecting pipe, and the water in the storage tank can directly enter the water tank 1 and the water tank 2 through the pump 1 and the pump 2. The differential pressure transmitter is used to measure the liquid level of each water tank, and the pump 1, 2 can be used to control the liquid level of water tank 1 and 2, and the liquid level of water tank 3 is not controlled. Leakage faults, actua...

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Abstract

The invention discloses a fault detection method for a system with a self-triggering transmission mechanism based on a convex multicellular theory, comprising: step 1, establishing a continuous system model containing disturbance input and fault and discretizing it; step 2, designing Fault detection filter, deduce the state estimation error system; Step 3, use the convex polytope theory to process the error system, define stochastic stability and H_ / H ∞ Performance constraints; Step 4: Solve the linear matrix inequality to obtain the parameters of the fault detection filter; Step 5, Design a self-triggering transmission mechanism; Step 6, Substitute the parameters obtained in the above steps into the fault detection filter for fault detection.

Description

technical field [0001] The invention relates to the field of fault diagnosis of known system mathematical models, such as three-capacity water tank systems and power systems, and specifically relates to a fault detection method for systems with self-triggering transmission mechanisms based on convex polytopic theory. Background technique [0002] With the continuous development of modern technology, modern industrial systems are becoming more and more complex and costly. Once the system fails, it will not only cause huge economic losses, but even endanger the safety of workers. This requires the system to have higher security, stability and reliability. Fault diagnosis technology is playing an increasingly important role in industrial production, and many researches and production practices have shown that fault diagnosis technology has very important practical significance. [0003] In a networked control system, due to bandwidth limitations, data transmission will be limi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B23/02
CPCG05B23/0254
Inventor 朱正茂张建华
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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