SIMULATION OF THE SURFACE OF A PAPER FLOW 

Revunov Maksim Sergeevich, postgraduate student, Penza State University (40 Krasnaya street, Penza, Russia); engineer of automated system process control department, JSC «Mayak» (1 Bumaznikov street, Penza, Russia), E-mail: revunov_rabota@mail.ru
Salmov Evgeniy Nikolaevich, candidate of technical sciences, leading software engineer of automated system process control department, JSC «Mayak» (1 Bumaznikov street, Penza, Russia), E-mail: salmove@mail.ru 

676.2.056-55 

10.21685/2307-5538-2020-1-6 

Background. On long-mesh papermaking machines (BDM), the issue of stabilization of the parameters (in particular, the angle of incidence and the rate of discharge) of the flow of paper mass coming from the pressure or discharge device is acute. The use of contact methods of speed measurement is impossible, since the device violates the integrity of the flow and, accordingly, destroys the process of forming a paper web on the grid. The use of laser meters is complicated by the design features of the grid table. Thus, optical liquid flow velocity meters based on a cross-correlation algorithm come to the fore. However, it is impossible to justify the applicability of this method on the current BDM without a number of complex, resource-intensive experiments. The purpose of this work is to create a model of the paper mass flow surface on the BDM grid and to evaluate the main characteristics of the non-contact speed measurement method based on the cross-correlation algorithm.
Materials and methods. The paper uses methods of modern theory of automatic control and automation of technological processes, methods of digital image processing and tracer visualization, computer modeling.
Results. A model of the paper mass flow surface on the grid part of the BDM was created.
Conclusions. Evaluation of the main characteristics of the non-contact method of speed measurement based on the cross-correlation algorithm using the paper mass flow surface model allows us to talk about the applicability of the method for the above purposes. 

papermaking machines, contactless speed measurement, cross-correlation algorithm