scholarly journals Development and research of the invariant automatic control system of angular speed of diesel engine

2019 ◽  
Vol 5 (2 (101)) ◽  
pp. 51-56
Author(s):  
Andriy Uzhelovskyi ◽  
Mikhail Spilnik ◽  
Valentyn Uzhelovskyi ◽  
Maxim Shaptala ◽  
Halyna Kravec ◽  
...  
Keyword(s):  
Control System ◽  
Diesel Engine ◽  
Automatic Control ◽  
Automatic Control System ◽  
Angular Speed

scholarly journals Studies of behaviour of the automatic control system of roadheader cutting heads movement

2019 ◽  
Vol 252 ◽  
pp. 09002 ◽  
Author(s):  
Piotr Cheluszka ◽  
Piotr Sobota ◽  
Grzegorz Głuszek
Keyword(s):  
Control System ◽  
Automatic Control ◽  
Automatic Control System ◽  
Frequency Converter ◽  
Angular Speed ◽  
Underground Mines ◽  
System Parameters ◽  
Programming Device ◽  
Innovative Solution ◽  
Control Purpose

Boom–type roadheaders are basic machines used in underground mines for drilling roadways, in tunnelling and also for making underground buildings using trenchless methods. The article presents selected results of tests carried out in a semi–industrial scale, on a roadheader R–130, concerning behaviour of an innovative solution of system for automatic control of boom–type roadheader cutting heads’ movements. This important innovation, not known before in mining cutting machines, is the software control of cutting heads angular speed using a frequency converter. The text shows an impact of key values, from a perspective of an assumed control purpose, of programming device (setting system) parameters, achieving reference values for the actuators, on controlled facility behaviour when cutting a layered cement and sand block. The performance of the automatic control system without and with feedback to the setting system concerning an actual speed of cutting heads movement, which is important from the control system hardware perspective, was compared.

scholarly journals Simulation of the Diesel Engine Rotational Speed Automatic Control System

2019 ◽  
pp. 35-46
Author(s):  
V.A. Markov ◽  
E.F. Pozdnyakov ◽  
V.V. Furman ◽  
S.V. Plakhov
Keyword(s):  
Control System ◽  
Diesel Engine ◽  
Automatic Control ◽  
Automatic Control System ◽  
Pid Control ◽  
Rotational Speed ◽  
Internal Combustion Engines ◽  
Transient Processes ◽  
Diesel Generator ◽  
Proportional Integral

In this work, the problem of improving the quality of controlling the diesel engine crankshaft speed is considered. The principles that govern the control of this parameter in internal combustion engines are described. The advantages of the proportional-integral-differential (PID) control principle are shown. Calculations of the influence of the PID controller structure on the dynamic characteristics of the diesel engine rotational speed automatic control system are performed. The transient processes of acceleration–inhibition and load-dropping are investigated using a KamAZ-740 engine of a 100 kW diesel generator. Transient processes are achieved for different values of the proportional, integral and differential components of the PID control law. The influence of these coefficients on the quality indicators of the regulatory process such as the duration of the transient process and overshoot is evaluated.

scholarly journals The method for automatic control of a ship with directional instability

2021 ◽  
Vol 2061 (1) ◽  
pp. 012084
Author(s):  
AI Kondratyev ◽  
I V Burylin ◽  
KP Mamaev ◽  
S V Skorokhodov
Keyword(s):  
Kalman Filter ◽  
Control System ◽  
Automatic Control ◽  
Automatic Control System ◽  
Wind Wave ◽  
Angular Acceleration ◽  
Angular Speed ◽  
Control Actions ◽  
Control Diagram ◽  
Simple Integration

Abstract A method for creating an automatic control system for a ship with directional instability has been developed. As part of the tests of a small-sized unmanned vessel, a control diagram was built. It showed that the vessel is unstable along its route. It became necessary to add a control channel for the angular acceleration of the vessel to the main channels of the PID regulator. The PID-U regulator has a significant advantage in controlling an unstable vessel on the route over a standard PID regulator due to the channel of angular acceleration; the regulator monitors the angular speed and compensates it with control actions. The disadvantage of the method is difficulties in finding the angular acceleration of the vessel, since, gyroscopic sensors installed on vessels provide data only on the route and angular speed. Simple integration of the angular speed to determine the acceleration can result in errors, especially in wind-wave conditions. The mathematical observer based on the Kalman filter can be used. The results of operation modeling forthis regulator are described.

Investigation of the stability of periodic motions in a nonlinear automatic control system based on the fast fourier transform

2003 ◽  
Vol 3 ◽  
pp. 297-307
Author(s):  
V.V. Denisov
Keyword(s):  
Fourier Transform ◽  
Control System ◽  
Automatic Control ◽  
Fast Fourier Transform ◽  
Automatic Control System ◽  
Resonance Phenomenon ◽  
Periodic Motions ◽  
Multiply Connected ◽  
Non Linear ◽  
The Stability

An approach to the study of the stability of non-linear multiply connected systems of automatic control by means of a fast Fourier transform and the resonance phenomenon is considered.

scholarly journals Results of Laboratory Studies of the Automated Sorting System for Root and Onion Crops

Agronomy ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1257
Author(s):  
Alexey Dorokhov ◽  
Alexander Aksenov ◽  
Alexey Sibirev ◽  
Nikolay Sazonov ◽  
Maxim Mosyakov ◽  
...  
Keyword(s):  
Control System ◽  
Automatic Control ◽  
Automatic Control System ◽  
Technological Parameters ◽  
Post Harvest ◽  
Manual Sorting ◽  
Sorting System ◽  
Working Bodies ◽  
Automatic Removal

The roller and sieve machines most commonly used in Russia for the post-harvest processing of root and tuber crops and onions have a number of disadvantages, the main one being a decrease in the quality of sorting due to the contamination of working bodies, which increases the quantity of losses during sorting and storage. To obtain high-quality competitive production, it is necessary to combine a number of technological operations during the sorting process, such as dividing the material into classes and fractions by quality and size, as well as identifying and removing damaged products. In order to improve the quality of sorting of root tubers and onions by size, it is necessary to ensure the development of an automatic control system for operating and technological parameters, the use of which will eliminate manual sorting on bulkhead tables in post-harvest processing. To fulfill these conditions, the developed automatic control system must have the ability to identify the material on the sorting surface, taking into account external damage and ensuring the automatic removal of impurities. In this study, the highest sorting accuracy of tubers (of more than 91%) was achieved with a forward speed of 1.2 m/s for the conveyor of the sorting table, with damage to 2.2% of the tubers, which meets the agrotechnical requirements for post-harvest processing. This feature distinguishes the developed device from similar ones.

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