Skip to content

January 19, 2014

Biktashev D.A., Lieberman Y.L., Gorbunova L.N. Huffman-Lieberman synthesis code for CNC systems by DNC class machine tools

Huffman-Lieberman synthesis code for CNC systems by DNC class machine tools

Biktashev D.A., Lieberman Y.L., Gorbunova L.N.

DNC class CNC systems are the most rational and promising type of equipment and control systems, in particular, machine tools for flexible automated production. The two types of codes are used in the DNC systems such as Chudakov’s corrective ISO-7bit codes and the optimal (statistical) codes, based on Huffman’s synthesis algorithm. It is extremely difficult to detect errors in the programs made in Huffman’s code, if there are any. This entails a significant complication of CNC system interfaces and requires special software of their work. The paper presents an optimal Huffman-Lieberman uneven code for the transmission of control programs from the computer to the CNC machine tools designed for flexible automated production. The paper describes one of the possible synthesis algorithms of such codes and compares Huffman-Lieberman code with ISO-7bit Chudakov’s and Huffman’s algorithm. Huffman-Lieberman code will improve accident-free DNC class CNC systems, as well as reduce possible production failures and economic losses.

Keywords: Huffman-Lieberman code, CNC system, parity control, flexible automated production.

References

  1. Ratmirov V.A. Machine Control of flexible manufacturing systems. – Moskow: Mashinostroenie, 1987.
  2. Chudacov A.D. Management system flexible machining complexes. – Moskow: Mashinostroenie, 1987.
  3. Huffman D. Method of building codes with minimum redundancy // Cybernetic collection, № 3, 1961.
  4. Lieberman Y.L. Statistical codes for systems of numerical control machines directly from the computer // Machines and Tools, 1975, № 7.
  5. Lieberman Y.L. Principles and prospects of development of monitoring systems for machine tools. – Moscow: VNIITEMR, 1989.
  6. Lieberman Y.L., Zhurov S.P. Increased reliability of CNC machine tools DNC-class method of statistical encoding / Quality performance and reliability of the BMS. – Sverdlovsk, Ural Branch of the USSR Academy of Sciences, 1988.
  7. Lieberman Y.L., Timashev  S.A., Zhurov S.P. Statistical coding of information management programs as a way to enhance the reliability of the DNC class CNC. – Sverdlovsk, Ural Branch of the USSR Academy of Sciences, 1988.
  8. Lieberman Y.L. Monitoring systems for machine tools. – Ekaterinburg: Ural. gov. techn. university Press, 2000.
  9. Tsymbal V.P. Information Theory and Coding. – Kiev, Visha School, 1973.
  10. Novick D.A. Efficient coding. – Leningrad: Energiya, 1965.

«Engineering industry and life safety» №1 (15), 2013. Pages: 35-44

Download full text:Biktashev D.A., Lieberman Y.L., Gorbunova L.N. Huffman-Lieberman synthesis code for CNC systems by DNC class machine tools

View russian version


Biktashev Denis Andreevich – Engineer, Ural Federal University, Ekaterinburg, Russia. E-mail: msi@mmf.ustu.ru

Lieberman Yakov Lvovich – Ph.D., Ural Federal University, Ekaterinburg, Russia. E-mail: yakov_liberman@list.ru

Gorbunova Lyubov Nikolaevna – Ph.D., Siberian Federal University, Krasnoyarsk, Russia. E-mail: Brigitta_81@mail.ru



Комментарии закрыты.