Estimation and improvement of the safety of photoelectrical protective devices of one-knife paper cutting machines

Author(s) Collection number Pages Download abstract Download full text
Kazmirovych O. R., Kazmirovych R. V. № 1 (50) 35-41 Image Image

The theoretical and practical methods of the safety improvement exploitation of one-knife paper-cutting machines by their multi-ray photoelectrical protective devices (PPD) with embedded systems of periodical control for perfect functioning have been described. The empirical diagrams of intervals between the control cycles have been presented, the analysis of which demonstrates its typicality for the exponential law. The model of a reliable protective device in the form of graph transition reflecting the Markov processes has been offered. The theoretical analysis of the PPD reliability has been conducted, the result of which being the calculation figures for the estimation of the PPD reliability in a real control system.

The principle electrical scheme of multi-ray PPD with periodical control has been proposed, being simple in making and exploitation.

Keywords: one-knife paper-cutting machines, photoelectrical protective devices, reliability, periodical control.

  • 1. Каzmirovych R. (1996), About estimation of traumatism of one-knife paper-cutting machines with programming control, Printing and publishing, No.31, pp. 115–120.
  • 2. Каzmirovych R. (1977), Photoelectric protective device of one-knife paper-cutting machines and the questions of its light barrier optimum placing, Printing and publishing, No.13, pp. 84–89.
  • 3. Каzmirovych R. (1979), Some questions of photoelectrical protective devices optimization parameters according to reliability, Printing and publishing , No.15, pp. 85–90.
  • 4. Каzmirovych R. (1984), Analysis of reliability of photoelectrical protective devices, Printing and publishing, No. 20, pp. 78–82.
  • 5. Gurevych А. and Nejshtadt A. (1970), Reliability of logical control systems, Energy, Moscow.
  • 6. Kasatkin А. (1975), Efficiency of automated control systems, Energy, Moscow.
  • 7. Venttsel Е. and Ovcharov L. (1983), Applied problems of the theory of probability, Radio and communication, Moscow.
  • 8. Golynkevych Т. (1977), Applied theory of reliability, Higher school, Moscow.