Method for distributing multiple motor speed instructions in strip producing process

Abstract

The invention discloses a method for distributing multiple motor speed instructions in a strip producing process. In the current method, linear speed microinverse between front and back motor driving rollers is arranged according to experiences generally, and a requirement can be met through repeated adjustment, so that finished products are high in rejection rate, high in raw material loss and unstable in tension. The method comprises the following steps of firstly, calculating the theoretical multiplicative tension of strips according to physical attribute parameters, and calculating a linear speed chain parameter of the two adjacent motor driving rollers according to the expected tension value of the strips; secondly, calculating the linear speed instructions of adjacent front roller motors according to the linear speed instruction of a reference roller motor driving roller; and finally, respectively converting the linear speed instructions of two adjacent motor driving rollers into rotation speed instructions of two motor rotating shafts, and outputting the rotation speed instructions to a speed instruction receiving end of each motor driver, so that coordinated control on the linear speed of multiple motor driving rollers is realized, and the tension of the strips meets a production requirement. The method is good in universality, and simple and convenient to use and is not required to be repeatedly adjusted.

Description

technical field [0001] The invention belongs to the field of industrial automation and relates to a method for distributing speed commands of multiple motors in the production process of strips. When the production speed meets the requirements, the tension of the strips also meets the requirements. Background technique [0002] The processing and production process of various strip materials such as flexible packaging materials, plastic films, and textiles generally consists of multiple production units, which involve the coordination and control of multiple motors. At present, in many such production equipment, in order to simplify the equipment structure and reduce the cost, the closed-loop control of the tension is not directly performed, but there is a certain micro-gradient between the linear speeds of the front and rear motor drive rollers set according to the production process. For example, a production unit is generally equipped with a feed drive motor (also called ...

AI Technical Summary

Problems solved by technology

One of the main disadvantages of this type of speed distribution method is that the linear velocity micro-gradient between the front and rear motor-driven rollers is generally set according to experience, and repeated debugging is required to meet the requirements, resulting in a high scrap rate of finished products and a large loss of raw materials. The tension is unstable, which seriously restricts the improvement of production quality and production speed