scholarly journals AUTOMATIC CONTROL AND MANAGEMENT OF PRODUCTION QUALITY DURING HIGH-FREQUENCY WELDING OF PLASTICS

Author(s):  
Pavel N. Petukhov ◽  
◽  
Yury P. Yulenets ◽  
◽  
Author(s):  
А. Yu. Izmaylov ◽  
Ya. P. Lobachevskiy ◽  
V. К. Khoroshenkov ◽  
N. Т. Goncharov ◽  
S. E. Lonin ◽  
...  

The introduction of information and digital technologies that support and support all technological processes in the field is an urgent need for the development and implementation of such technology. An organisationally complex and financially intensive project is necessary because of the wide variety of economic entities that differ in the size of production, forms of ownership and socio-economic conditions of production. Automated information control system for mobile units agricultural enterprise provides those-Niko-economic performance, optimum capacity utilization through the use of timely and reliable information on technology. Machine and tractor aggregates are appertained as control objects with variable structure, which is explained by possibility of the system formation from tractor or field machines mobile units with various purposes: tillable, cultivatable, sowing, harvesting and etc. This MTA feature was determined creation of digital control systems of two groups of automatic control and management of the basic energy and operational parameters: tractors, machines and vehicles as part of MTA. To the first group are appertained the automatic control system of tractor motor component loading, motion speed, frictional sliding. To the second group – automatic regulation system of operating depth, seed rate, treatment of liquid combined fertilizers and crop protection agents, filling and driving of various MTA. Novelty of researches consists in methodology of the organization of the centralized control and management of various technological processes at carrying out field works.


2005 ◽  
Vol 19 (9) ◽  
pp. 745-747
Author(s):  
A V Markov ◽  
YU P Yulenets ◽  
S N Rumynskii

Vestnik MEI ◽  
2020 ◽  
Vol 6 (6) ◽  
pp. 91-100
Author(s):  
Mikhail A. Babochkin ◽  
◽  
Oleg S. Kolosov ◽  
Anna A. Kuznetsova ◽  
◽  
...  

The article addresses the matter of reducing the power of high-frequency noise in the control signal produced by industrial automatic systems through the use of algorithms implementing the properties of comb filters in microprocessor controllers. The specific features relating to the frequency responses of open- and closed-loop automatic control systems of industrial facilities are analyzed - both taken alone and in combination with the characteristics of comb filters. The frequency properties of three filter groups that are conventionally used in continuous automatic control systems are compared with three groups of comb filters that implement similar functions. As applied to control tasks, such filters include real differentiating sections or first-order high-pass filters, first-order lag sections or low-pass filters, and proportional sections. The ratios between the parameters of continuous filters and comb filters at which their frequency properties coincide in the operating frequency band are determined. These ratios known, it becomes possible to synthesize the controllers of systems using the existing techniques. It is shown that the amplitude-frequency responses of comb filters have dips in the high-frequency band, due to which the high frequency noise power is finally decreased by up to 30%. The advantage of comb filters in control systems lies in simplicity of implementing them in digital form in a microprocessor controller. The application of comb filters in automatic control systems makes it possible to cut undesirable harmonic noise of large amplitude in the control signal.


Author(s):  
N.V.P.R. Durga Prasad ◽  
T. Lakshminarayana ◽  
J.R.K. Narsimham ◽  
M. Thenmozhi Verman ◽  
C.S.R. Krishnam Raju

2021 ◽  
pp. 94-97
Author(s):  
Alexandr Vladimirovich Lavrov ◽  
Valeriya Aleksandrovna Zubina

            The article discusses the brands of foreign agricultural tractors used by modern automation systems. The main questions of the expediency application and methods of creating means automatic control and management for agricultural tractors are considered. The characteristics of the categories of application of automation elements are given.


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