DEVELOPMENT OF THE LOAD MEASURING DEVICES TO DETERMINE THE RESIDUAL DEFORMATION OF THE ELASTIC SENSING ELEMENT

The main focus in the design of weighing and batching devices is to create a gravimetric technique, capable of providing not only mass measurement – weighing with the required accuracy and speed, but also automatic control of technological processes and their control and regulation. In this case, the opportunity of two-way communication with a computer when designing the load measuring devices is realized, allowing remote monitoring and solution of logical problems associated with the management process. Modern automatic weighing and batching devices are important parts of comprehensive automation in different branches of industry. Existing developments of electrical, electronic, computing and other branches of instrument engineering techniques allow to implement transformations of the measured quantity with a very high degree of accuracy. However, if the measured quantity in the weighing process is perceived by the elastic sensing element of low quality, then no matter how high the accuracy of further changes is; the characteristics of the elastic element will limit the accuracy of the instrument as a whole. Although the elastic elements are simple mechanical parts, and many types of elastic elements are known and are widely used for many decades, their performance often does not meet the requirements, and hampers the device creation of high accuracy classes. Growing requirements for primary transformer makes actual the problem solution of improving the quality of elastic sensing elements not only in the manufacture but in the design. This led to the appearance of projects aimed at the development of computational and experimental methods that have altered the methodology for the design of force measuring devices.

1. Felikson E.N. Uprugie ehlementy priborov [Elastic elements of instruments]. M., Mechanical Engineering publ., 1977, 311 p.

2. Asch G. Les capteurs en enstrumentation industrielle. Lyon, 1991, 970 p.

3. Barber J.R. Elasticity, Second Edition. Kluwer, 2004, 431 p.

4. Karpin E.B. Sredstva avtomatizacii dlya izmereniya dozirovaniya massy [Automation means to measure mass dosing]. 2nd edition revised and added. M., Mechanical Engineering publ., 1971, 470 p. (in Russian)

5. Tikhonov A.I., Mokrov E.A. Prospects for improving the elastic elements of mechanical parameters sensors [Measuring elements (sensors) of information-measuring systems, automated systems of technological processes control and automation systems]. Saratov, Saratov University, 1979, 244 p. (in Russian)

6. Alfutov N.A. Osnovy rascheta na ustojchivost' uprugih sistem [Basics of calculating the stability of elastic system]. M., Mechanical Engineering publ., 1978, 312 p. (in Russian)

7. Rijlaarsdam D.J. Modelling damping in linear dynamic systems. Eindhoven, 2005, 50 p.

8. Antonets I.V., Gorshkov G.M., Petrov V.A., Tereshenok A.P. RF Patent, №129630. Vesoizmeritel'noe ustrojstvo [Weight measurement device]. Applicant and patent holder Ul’yanovsk State University. Application of 14.12.2012, publ. on 27.06.2013. Bulletin № 18. 2 p.

9. Tikhonov A.I., Kulagin L.I. The transformation function of the annular elastic elements [Information processing in automated systems]. Ryazan, Ryazan Radio Engineering Institute publ., 1977, 286 p. (in Russian)

10. Antonets I.V., Gorshkov G.M., Petrov V.A., Tereshenok A.P. RF Patent, № 129631. Vesoizmeritel'noe ustrojstvo [Weight measurement device]. Applicant and patent holder – Ul’yanovsk State University. № 2012154613/28; application of 14.12.2012; published on 27.06.2013. Bulletin № 18. 2 p.

11. Datshenko A.F. Kozinskaya Y.A., Limarenko A.S. Method of calculating the elastic element of a force measurement device [Pracі Odes'kogo polіtekhnіchnogo unіversitetu]. Odessa, Odessa Polytechnic University Publ., 2013, Vol. 2 (41). (in Ukrainian)

12. Titus S.S.K., Kamlesh K. Jain, S.K. Dhulkhead, Poonam Yadav. Design and development of precision artifact for dissemination of low forces of 1N and 2N 19. IMEKO World Congress, 2009.

13. Antonets I.V., Gorshkov G.M., Petrov V.A., Tereshenok A.P. RF Patent № 129632. Vesoizmeritel'noe ustrojstvo [Weight measurement device]. Applicant and patent holder – Ul’yanovsk State University № 2013102877/28; application of 22.01.2013; published on 27.06.2013. Bulletin № 18. 2 p.

14. Tropf U. Opto-Elektronik steurt Verpackungsvorgange "Nene Verpackung". 1975, Vol. 1–18.

15. Kamble V.A., Gore P.N. Use of FEM and Photo Elasticity for Shape Optimization of „S‟ Type Load Cell. Indian Journal of Science and Technology, 2012, Vol. 5, No. 3, pp. 2384–2389.

16. Aleinikov A.F., Gridchin V.A., Tsapenko M.P. Datchiki (perspektivnye napravlenija razvitija) [Sensors (perspective directions of development)]. Novosibirsk, NSTU publ., 2001, 176 p. (in Russian)

17. Andreeva L.E. Uprugie jelementy priborov [Elastic elements of devices]. M., Mechanical Engineering publ., 1980, 230 p. (in Russian)

18. Ciarlet P.G. Anintroduction to differential geometry with applications to elasticity. Springer, 2005, 211 p.

19. Nyce David S. Linear position sensors: theory and application. [John Wiley & Sons, Inc]., Hoboken, New Jersey, 2004, 179 p.

20. Elbestawi M.A. Force Measurement. Measurement, Instrumentation, and Sensors Handbook, 1999, pp. 600–615.