The problems of high dynamic drive control under circumstances of elastic transmission

2008 ◽  
Author(s):  
Jan Deskur ◽  
Roman Muszynski
Keyword(s):  
Drive Control ◽  
High Dynamic

Leistungsverzweigter Servopressenantrieb*/Power-split servo press drive - Control of a new servo press drive with mechanical power split

2015 ◽  
Vol 105 (05) ◽  
pp. 291-296
Author(s):  
B.-A. Behrens ◽  
R. Krimm ◽  
J. Jocker ◽  
T. Nitschke
Keyword(s):  
Control Systems ◽  
Operating Costs ◽  
Mechanical Power ◽  
Forming Technology ◽  
Servo Press ◽  
Drive Control ◽  
Power Split ◽  
Control Concept ◽  
High Dynamic ◽  
Special Control

Am Institut für Umformtechnik und Umformmaschinen der Leibniz Universität Hannover wird zurzeit an einer neuartigen Antriebslösung für Servopressen gearbeitet, welche die Vorteile von Servopressen und Exzenterpressen mit Schwungradantrieb vereint. Ziel ist, sowohl bei der Anschaffung als auch im Betrieb Kosten einzusparen. Für die Ansteuerung der Antriebsmotoren wurde ein spezielles Regelkonzept erarbeitet, das sich deutlich von bestehenden Regelungssystemen heutiger Servopressen abgrenzt.   At the Institute of Forming Technology and Machines (Leibniz Universität Hannover), a new drive concept for servo presses is being developed which combines the advantages of servo presses with a high dynamic powertrain and flywheel based eccentric presses. This is intended to save acquisition and operating costs. To control the drive engines, a special control concept has been developed which is completely different from control systems of modern servo presses.

scholarly journals DYNAMIC ANALYSIS PECULIARITIES OF SUSPENSION TRUCK TRAVEL IN BRIDGE CRANE WITH LINEAR DRIVE

2016 ◽  
Vol 2016 (3) ◽  
pp. 115-122
Author(s):  
Илья Денисов ◽  
Ilya Denisov ◽  
Кирилл Гончаров ◽  
Kirill Goncharov ◽  
Евгений Ильин ◽  
...  
Keyword(s):  
Dynamic Analysis ◽  
Dynamic Models ◽  
Metal Structure ◽  
Interaction Force ◽  
Bridge Crane ◽  
Electric Motors ◽  
Friction Forces ◽  
Drive Control ◽  
Operating Rate ◽  
High Dynamic

The paper reports the results of a dynamic analysis of suspension truck travel in a bridge crane with a linear drive. As compared with the existing designs this drive possesses a number of advantages and distinguishing capacities which should be taken into account at the formation of dynamic models. So, the interaction force between the elements of an electric motor affects the resistance value to a truck travel of friction forces. A nominal operating rate of linear electric motors exceeds 1 m/sec. The operating rates of the travel of most loadlifting machines and their separate elements are within the bounds of 0.1 – 1 m/sec. It is evident that even to maintain the same rate of travel the introduction of a control system is necessary. On the other hand, linear electric motors with the control systems possess high dynamic characteristics and may be used to reduce load oscillations on a flexible suspension which is particularly significant for technological cranes. A dynamic analysis is carried out for a singlemass and doublemass models. The results of computations confirmed a necessity for the drive control to obtain a working speed of movement and also to reduce load oscillations and dynamic loads upon mechanisms and a metal structure of a loadlifting machine. The analysis has also shown that a singlemass model does not give a complete comprehension of changes in a speed of a mechanism at acceleration and it should not be used at the design computations of movement mechanisms of this type.

High-dynamic-range interferometric bragg-cell spectrum analyser

1986 ◽  
Vol 133 (1) ◽  
pp. 26
Author(s):  
J. Mellis ◽  
G.R. Adams ◽  
K.D. Ward
Keyword(s):  
Dynamic Range ◽  
High Dynamic Range ◽  
Spectrum Analyser ◽  
High Dynamic

EUROPEAN UNION´S SUGAR MARKET CONCENTRATION UNDER THE SUGAR QUOTA PRODUCTION SYSTEM

2015 ◽  
Author(s):  
Ľuboš SMUTKA ◽  
Helena ŘEZBOVÁ ◽  
Patrik ROVNÝ
Keyword(s):  
United Kingdom ◽  
Quota System ◽  
Eu Member States ◽  
The United Kingdom ◽  
Sugar Market ◽  
Current Production ◽  
High Dynamic ◽  
Production Capacities ◽  
Very High ◽  
The Eu

The European sugar beet quota system is in very high dynamic process in recent years. The number of sugar companies involved in this system has been constantly decreasing. The aim of this paper is to define subjects (companies/alliances), which possess the current production capacities working under the production quotas system. The paper is determining especially the level of beet sugar production quota holder system concentration using the Herfindahl-Hirschman Index. The paper provides the following findings. The European quota holder system is extremely concentrated and it is becoming more and more dominated by fewer players. Sugar quota is distributed among 19 EU-Member States. In this regard, the quota is generous, especially in relation to France, Germany, Poland and United Kingdom. In Finland, Lithuania, Hungary, Sweden, Denmark, the Netherlands, Slovakia and the United Kingdom controlled by two or even one subject (companies, alliances). There is a large discrepancy between political efforts to distribute equitable R 1308/2013-sugar quotas among states and the actual reality of those distributions. While the EU-quota holder system does not indicate an extreme concentration, an analysis according to the headquarters´ location and allocated quotas to owners of production capacities provides the evidence of extreme concentration.

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