Cut-to-length shear crankshaft encoder fault diagnosis method and device

Abstract

The invention provides a cut-to-length shear crankshaft encoder fault diagnosis method and device. The method comprises the steps that the rotation angle value of a crankshaft in the shearing processof a cut-to-length shear is obtained in real time through a crankshaft encoder; in the shearing process of the cut-to-length shear, time slices are generated according to a preset time interval, and each time slice is marked with a numerical value sequence; the rotation angle value of the crankshaft is set to be within a preset angle range, and an angle value alpha 1 when a swing roller way is started to fall, an angle value alpha 2 when a pressing plate is started to fall, an angle value alpha 3 when the pressing plate is started to rise and an angle value alpha 4 when the swing roller way isstarted to rise are obtained; time slice calibration values are intercepted from the generated time slices according to the angle values alpha1, alpha2, alpha3 and alpha4; and whether the crankshaftencoder breaks down or not is determined according to the intercepted time slice calibration values and the running state characteristic signals of the corresponding angle values. According to the invention, the operation state of the cut-to-length shear crankshaft encoder can be detected and diagnosed in real time, and when the crankshaft encoder fails, encoder fault information can be displayedin real time.

Description

technical field [0001] The invention relates to the technical field of iron and steel, in particular to a fault diagnosis method and device for a shear crankshaft encoder. Background technique [0002] In the production of medium and heavy plate steel, the encoder of the crankshaft of the cut-to-length shear is the core detection element of the control of the cut-to-length shear. If the encoder breaks down, the cut-to-length shears cannot be cut normally. At present, usually when the cut-to-length shears cannot be cut normally, the maintenance workers are called to the scene to check and judge the faults of the cut-to-length shears, and to perform fault maintenance. The whole process often takes a long time, and the length of maintenance time is also closely related to the level of technical skills of maintenance workers. In the context of reducing costs and increasing benefits in the iron and steel industry, if the time for fault judgment and processing is reduced, accide...

AI Technical Summary

Problems solved by technology

The whole process often takes a long time, and the length of maintenance time is also closely related to the level of technical skills of maintenance workers

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