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The present article reveals an objective role of close cooperation between manufacturing companies and scientific schools of colleges in training academic personnel for enterprises and colleges and in their professional development. In earlier times it was compulsory to bring the operating plans of expedition departments to the Science and Technical Council before they were approved by the Central Board. However, the scientific control over the geological prospecting by the approved projects did not bring the personnel in on preparing degree dissertations. Fruitful cooperation between the manufacturers of expedition no. 101 and scientific researchers of Sverdlovsk Mining Institute based on the study of Ural deposits of piezooptical and gangue quartz was marked by the defense of 17 PhD and 4 DSc dissertations by the members of SSI, and 20 PhD and 7 DSc dissertations by the geologists of expedition no. 101. Thus, close cooperation between the manufacturers and scientific researchers of colleges is an effective way to form academic personnel and develop professionalism.

Key words: academic personnel; academic degree; SSI; expedition; Ural deposits of gangue quartz; academic personnel formation.

1. Polenov Iu. A., et al. The history of research, prospecting, and exploitation at Ural crystal-bearing deposits (1937–1991): scientific monograph. Ekaterinburg: UrSMU Publishing; 2017. (In Russ.) 2. Volkova A. N. On quartz and other minerals: the history of VNIISIMS. Moscow: Nedra Publishing; 1989. (In Russ.) 3. Emlin E. F. Sketches of Ural Mining Institute Mineralogy Department history. Ekaterinburg: UrSMU Publishing; 2008. (In Russ.)

Download issue №6 - 2019 

	GEOTECHNOLOGY: UNDERGROUND, OPEN, CONSTRUCTIONAL
Sokolov I. V. Rozhkov A. A.	Investigating the parameters of dispersion in the plane system of charges at granular quartz deep mining (In English)
Smirnov A. A. Nikitin I. V.	Justifying the types and methods of adapting the mining technological system of a mining enterprise to changing conditions of underground mining
	GEOMECHANICS. DESTRUCTION OF ROCKS
Karablin M. M. Guriev D. V. Prostov S. M. Lesin Iu. V.	Automatic analysis of pit slope stability in clays of quaternary sediments (In English)
Panzhin A. A. Panzhina N. A.	Evaluation of geodetic reference points stability as a basis for geodynamic monitoring
Kozyrev A. A. Kuznetsov N. N. Fedotova Iu. V. Shokov A. N.	The determination of rockburst hazard degree of hard rocks by the test results under uniaxial compression
	PHYSICAL AND CHEMICAL PROCESSES OF MINING. AEROGAS DYNAMICS
Smirnov V. G. Dyrdin V. V. Kim T. L.	The factor of outburst hazard of coal seams zones, conditioned by coal particles size (In English)
	MINING AND OIL-AND-GAS GEOLOGY, GEOPHYSICS
Teplukhin V. K. Ratushniak A. N. Wang Xiaolong.	Electromagnetic technology of diagnosing the internal protective coating of field pipelines
	MINERAL PROCESSING
Prokopiev S. A. Pelevin A. E. Prokopiev E. S. Ivanova K. K.	Increasing the integrity of iron-ore raw material use with the help of screw separation
Stupakova E. V.	Measuring errors in the compositional reference materials of gold ore
Shaikhova D. R.	Prospects for bioleaching of metal from wastes with Acidithiobacillus ferrooxidans
	ECONOMICS AND MINING PRODUCTION CONTROL
Ivanov A. N. Logvinenko O. A. Ignatieva M. N.	Economic evaluation of environmental implications in subsoil use
	ROCK GEOMECHANICS. MINING MACHINERY AND TRANSPORT
Zhetesova G. S. Beisembaev K. M. Mendikenov K. K. Teliman I. V. Akizhanova Zh. T.	Modelling scraper conveyor operation in the turn zone
Poliakov S. V.	Determination of steel wire rope parameters affecting the safety of operation
	HISTORY. INFORMATION. REVIEWS
	To the anniversary of Iakovlev Viktor Leontievich

Introduction. The efficiency of mineral production carried out by the shearer loaders entering the winning and heading mechanized systems is improved by their design and control systems development. At mineral resistance variation, in order to provide the full capacity utilization of shearer executive body electric motors, cutting electric drive torque (load) controller is used, control quality parameters of which depend on the value of cutting resistance. In this regard, relevant is the task of developing cutting torque stabilization system for shearer loader drive with constant control quality parameters through the use of intelligent control systems. Research aims to synthesize the fuzzy controller of the shearer loader electric drive cutting torque which increases the quality of cutting torque stabilization at material cutting resistance variation and to assess its efficiency by the mathematical modeling method. Methodology. The mathematical model of shearer loader electric drive cutting torque stabilization has been worked out; structure and parameters of cutting torque fuzzy regulator have been substantiated. The comparison of the proposed fuzzy controller with a typical PI controller has been carried out with the use of the model experiment method. Results. The mathematical model of shearer loader cutting torque stabilization system has been obtained which takes into account material cutting resistance variability, the constant of chip formation and the dynamic properties of cutting drives and feed drives. Shearer loader cutting torque fuzzy controller has been synthesized, in which four fuzzy sets have been applied at proportional part fuzzification, providing an automatic variation of the controller gain depending on error ratio. The model experiment has shown that the use of a fuzzy controller makes it possible to reduce the transient overshoot by torque by 15% and increase its speed by 25% under material cutting resistance variation by a factor of 2. Summary. The use of the proposed fuzzy controller makes it possible to obtain the quality of control action transition process independent of cutting resistance variation and lower overshoot under perturbing actions.

Key words: fuzzy controller; coal shearer; feed drive; cutting drive; mathematical model; transition process; coal hardness.

REFERENCES

1. Babokin G. I., Kolesnikov E. B. Variable frequency electric drive of shearers feed mechanisms. Gornyi informatsionno-analiticheskii biulleten (nauchno-tekhnicheskii zhurnal) = Mining Informational and Analytical Bulletin (scientifi c and technical journal). 2004; 3: 231–235. (In Russ.) 2. Sysoev N. I., Kozhevnikov A. S. Shearer loader with mode parameters adjustment. Gornaia mekhanika = Mining Mechanical Engineering and Machine Building. 2017; 11: 18–22. (In Russ.) 3. Fish S. G. The system of controlling electric drive of direct current with identifi cation self-adjustment. PhD (Engineering) dissertation. Voronezh; 2004. 151 p. (In Russ.) 4. Generalov L. K., Mochalova M. I., Generalov A. L. Close loop gain stabilization in cutting control system. Evraziiskii nauchnyi zhurnal = Eurasian Science Journal. 2016; 3: 17–24. (In Russ.) 5. Burakov M. V., Konovalov A. S. Modifi cation of Smith predictor for a linear plant with changeable parameters. Informatsionnye upravliaiushchie sistemy = Information and Control Systems. 2017; 89 (4): 25–34. (In Russ.) 6. Vlasov K. P. The theory of automatic control. Kharkov: Gumanitarnyi tsentr Publication; 2007. (In Russ.) 7. Pegat A. Fuzzy modeling and control. Moscow: Binom. Laboratoriia znanii Publication; 2009. (In Russ.) 8. Ruey-Jing Lian, Bai-Fu Lin, and Jyun-Han Huang. Self-organizing fuzzy control of constant cutting force in turning. In: The International Journal of Advanced Manufacturing Technology. Publisher Springer London, 17 August 2005. Available from: https://link.springer.com/article/10.1007%2Fs00170-005-2546-8 9. D. Kim and D. Jeon. Fuzzy-logic control of cutting forces in CNC milling processes using motor currents as indirect force sensors. Precision Engineering. 2011; 35; 1: 143–152. 10. Kulenko M. S., Burenin S. V. Research of ff uzzy controller application in technological processes control systems. Vestnik IGEU = Vestnik of Ivanovo State Power Engineering University. 2010; 2: 1–5. (In Russ.) 11. Filimonov A. B., Fulimon N. B. Robust correction in control system with nigt gain. Mechatronics, automation, control. 2014; 12: 3–10.

12. Sudhakara R., Landers R. Design and analysis of output feedback force control in parallel turning. Proc. I MECHE. Part I. Journal of Systems & Control Engineering. 2004; 16: 487–501. 13. Kudin V. F., Kolacny J. Synthesis of subortimal nonlinear regulator by immersion method. J. Electrical engineering. 1998; 49; 1–2: 11–15. 14. Firago B. I., Pavliachik L. V. The theory of electric drive. Minsk: Tekhnoperspektiva Publishing; 2004. (In Russ.) 15. Klementieva I. N. Substantiation and selection of dynamic parameters of shearer loader drive transmission. PhD (Engineering) dissertation. Moscow, 2015. 124 p. (In Russ.)

Received 11 March 2019