Multi-roller synchronous control method and related device

Abstract

The invention discloses a multi-roller synchronous control method and a related device. The multi-roller synchronous control method comprises the steps that the linear speed of a main pinch roll motor and the linear speed of an auxiliary pinch roll motor are given; according to the linear speed, determining a master frequency given value of a slave pinch roll motor; when it is judged that the working state of the slave pinch roll motor is the power generation state, the working state of the slave pinch roll motor is adjusted from the power generation state to an electric state; the output torque of the main pinch roll motor running at the linear speed is used as the given value of the speed regulation PID of the auxiliary pinch roll motor, the output torque of the auxiliary pinch roll motor in the electric state is used as the feedback value of the speed regulation PID, and the output of the speed regulation PID is used as the auxiliary frequency given value of the auxiliary pinch roll motor; and superposing the main frequency given value and the auxiliary frequency given value to obtain a frequency given value of the slave pinch roll motor. According to the method, the linear speed synchronization of the driving pinch roll motor and the driven pinch roll motor can be realized without an external sensor, and the internal friction phenomenon is avoided.

Description

technical field [0001] The present application relates to the technical field of industrial control, in particular to a multi-roller synchronous control method; and also to a multi-roller synchronous control device, equipment, and computer-readable storage medium. Background technique [0002] Rewinding and unwinding equipment is generally used in the secondary processing of steel coils, and the pinch roller device in the middle of the winding and unwinding equipment generally adopts a cylinder pressing device. The pinch roller is generally made of polyurethane rubber wheel or silicone rubber wheel. For steel, the extrusion friction between the steel belt and the pinch wheel is much smaller than the tension. The friction force can be increased by increasing the contact area, but it is necessary to increase mechanical and electrical accessories such as frequency conversion, cylinder, and motor. In order to meet the mechanical compactness, it is impossible to install the line...

AI Technical Summary

Problems solved by technology

Friction can be increased by increasing the contact area, but mechanical and electrical accessories such as frequency conversion, cylinders, and motors need to be added

In order to meet the mechanical compactness, it is impossible to install the linear speed calibration sensor. For this, the high-speed communication method is often used to ensure the given synchronization. The whole scheme requires full-speed experimental debugging, which is complicated and requires high machining.

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