Three-section cascaded fuzzy control method for blanking equipment of cooling bed in production line of continuous-rolling seamless steel pipes

Abstract

The invention relates to a three-section cascaded fuzzy control method for the blanking equipment of a cooling bed in a production line of continuous-rolling seamless steel pipes, which belongs to the field of fuzzy control. The invention aims at solving the problems that the number of detecting elements adopted by a traditional conventional control method is much, the equipment cost is increased and the number of the damaged detecting elements is also increased simultaneously. According to the method disclosed by the invention, the running processes of all equipment are decomposed and summarized into a plurality of 'therbligs', and the cascaded prediction of the actions of starting and stopping of each 'therblig' is carried out and is also input to a programmable logic controller (PLC) for carrying out logical operation so as to obtain the cascaded prediction of starting and stopping of 'therbligs' managed by equipment at a next stage. Such a process is circulated and reciprocated. The number of in-situ on-line detecting elements is lowered, and the running stability of the equipment is also enhanced. By predicting the actions of the equipment and combining the thinning of the 'therbligs' of the action processes of the equipment with the PLC, the aim of fuzzy process control is realized, and the on-line number and the failure rate of the in-situ detecting elements are lowered.

Description

technical field [0001] The invention relates to a three-stage cascade fuzzy control method for cooling bed blanking equipment in a continuous rolling seamless steel pipe production line, belonging to the field of fuzzy control. Background technique [0002] The cooling bed unloading equipment in the continuous rolling seamless steel pipe production line consists of four parts: the inverted arm feeding system, the material distribution system, the translation system and the conveying system. See figure 1 As shown, the inverted arm feeding system is responsible for vertically placing the steel pipes from the five-meter-high platform to the material distribution system through the hydraulic system. The material distribution system is responsible for placing the steel pipes on the corresponding material distribution platform. The platform is horizontally transported to the conveying system and the steel pipe is sent out by the conveying system. Since the equipment in this area ...

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the existing conventional control method uses a large number of detection elements, which increases the cost of equipment and increases the number of detection elements damaged, and provides a cooling system for the continuous rolling seamless steel pipe production line. Three-stage cascade fuzzy control method for bed unloading equipment

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