Reclaimer reclaiming flow control method and reclaiming flow control system

Abstract

Disclosed are a reclaimer reclaiming flow control method and a reclaiming flow control system. The system comprises a belt weigher connected with a cantilever crane, a detection transducing unit for detecting active power of a bucket-wheel motor or the pressure of a hydraulic motor, a input and output unit, a control unit and a cantilever crane rotation drive inverter; according to the motor active power or the hydraulic motor pressure value, real-time flow is obtained; relevant parameters of a real-time flow relation model obtained according to the motor active power or the hydraulic motor pressure value are corrected or revised by the flow value detected by the belt weigher, and the control unit makes the relation model more precise through self-learning; current reclaiming flow is calculated according to the real-time flow relation model by the motor active power or the hydraulic motor pressure value, PID control is conducted by using the calculated current reclaiming flow as negative feedback and given target flow, and the PID control target is the cantilever crane rotation drive inverter; the rotation speed of the cantilever crane is adjusted by adjusting the given speed of the inverter to control the reclaiming flow.

Description

technical field [0001] The invention relates to the technical field of reclaimer reclaiming operations, in particular to a reclaimer reclaimer flow control method and a reclaimer reclaimer flow control system. Background technique [0002] During the reclaiming operation, the reclaimer needs to control the reclaiming flow rate, and control the equipment to reclaim the material stably according to the set flow rate, so as to improve the operating efficiency of the equipment, ensure that no overload occurs during reclaiming, prolong the service life of the equipment, and reduce maintenance Overhaul costs. For the production process of fuel preparation for thermal power generation and iron and steel metallurgy raw material preparation, various raw materials need to be mixed according to different proportions. The higher the control accuracy of the proportioning operation, the more obvious the economic benefits. [0003] CN105404318A disclosed a method and device for controllin...

AI Technical Summary

Problems solved by technology

However, when the motor operation is below 60% load level, due to the drop of power factor, the relationship between the motor current and the reclaimed flow rate has entered a nonlinear region. In this range, the motor current or bucket wheel pressure will not be reflected according to the linear relationship. Reclaiming flow rate, at this time, if the motor current or bucket wheel pressure is used as the control basis to control the reclaiming flow rate, a large error will occur