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Fault-tolerant control method and system for material tracking system

A tracking system, fault-tolerant control technology, applied in general control systems, adaptive control, control/regulation systems, etc., can solve the problems of no automatic compensation and recovery mechanism, only manual adjustment, confusion of material tracking information, etc. Diagnosis and failure tolerance, reduced maintenance work, high utility value effect

Inactive Publication Date: 2014-02-26
WISDRI WUHAN AUTOMATION
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Problems solved by technology

[0007] The purpose of this paper is to provide a fault-tolerant control method and system for material tracking system, mainly to judge whether there is a fault in the grating or frequency conversion transmission device, and to perform fault tolerance when the fault occurs, and to solve the fault caused by the grating or frequency conversion transmission device. Unnecessary material tracking information confusion and material tracking information confusion can only be adjusted manually without subsequent automatic compensation recovery mechanism

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  • Fault-tolerant control method and system for material tracking system
  • Fault-tolerant control method and system for material tracking system
  • Fault-tolerant control method and system for material tracking system

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Embodiment Construction

[0040] Such as figure 1 Furnace material tracking structure shown.

[0041] The heat treatment furnace is equipped with 4 gratings along the process direction of the production line, and there are 30 roller tables in total. Each roller table is driven by a frequency converter. With the 1# roller table as the origin, and the distance between the rollers is 600mm, all the gratings and roller tables can be obtained. The specific position of the 1# roller table.

[0042] This embodiment provides a fault-tolerant control method for a material tracking system, the steps of which are:

[0043] 1. First set the required parameters;

[0044] The parameters that need to be set include: grating sampling period, grating health weight , raster health weight , Flashing error signal threshold 最大值 , Flashing error signal threshold 最小值 , long time false signal threshold 最大值 , long time false signal threshold 最小值 , grating health warning line, minimum delay time, maximum dela...

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Abstract

The invention discloses a fault-tolerant control method and a fault-tolerant control system for a material tracking system. In the fault-tolerant control method, through quality analysis on an acquired real-time grating signal, the problem of furnace material tracking confusion caused by a false grating signal is reduced; a sampling period inverter is alarmed, the number of faults is monitored in real time, and a weighted mean difference and a threshold of a sliding time window are processed so as to achieve fault diagnosis on a furnace material tracking system; the actual position of a steel plate is directly compensated to realize fault-tolerant control of the material tracking system; a fault diagnosis result can be displayed in real time on a man-machine interface; and in case of an emergency, a material tracking position can be directly modified artificially beyond all links. The invention further correspondingly provides a system for realizing the fault-tolerant control method. The problems of unnecessary confusion of material tracking information caused by a fault of a grating or variable frequency transmission device, and only manual adjustment and absence of a subsequent automatically-compensating restoring mechanism after the confusion of the material tracking information are solved.

Description

technical field [0001] The invention belongs to the technical field of fault diagnosis and fault tolerance, and in particular relates to providing a fault tolerance control method and system for a material tracking system of a roller hearth heat treatment furnace. technical background [0002] The roller hearth heat treatment furnace has a large furnace length, high production efficiency, good quality of processed steel, high degree of mechanization and automation, so it is widely used in the production of metallurgy and machinery industries. The material tracking system is the basis for the normal operation of the roller hearth heat treatment furnace. It provides basic material tracking position information for other subsystems (temperature curve control system, secondary model control system) in the roller hearth heat treatment furnace control system. Position tracking calculation is very important in the production process, and its accuracy and stability directly affect t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21D9/00G05B13/04
Inventor 祝威王胜勇卢家斌李传涛李四川李海东赵德力
Owner WISDRI WUHAN AUTOMATION
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