scholarly journals Impulsive Controllability/Observability for Interconnected Descriptor Systems with Two Subsystems

2015 ◽  
Vol 2015 ◽  
pp. 1-14
Author(s):  
Qingling Zhang ◽  
Jian Li ◽  
Junchao Ren
Keyword(s):  
Large Scale ◽  
Necessary Conditions ◽  
Feedback Controller ◽  
Descriptor Systems ◽  
Impulse Controllability

The problem of decentralized impulse controllability/observability for large-scale interconnected descriptor systems with two subsystems by derivative feedback is studied. Necessary conditions for the existence of a derivative feedback controller for the first subsystem of the large-scale interconnected descriptor systems ensuring the second subsystem to be impulse controllable and impulse observable are derived, respectively. Based on the results, a derivative feedback controller for the first subsystem of the large-scale interconnected descriptor systems is constructed easily such that the second subsystem is impulse controllable or impulse observable. Finally, examples are given to illustrate the effectiveness of the results obtained in this paper.

scholarly journals Certifying Global Optimality for the L∞-Norm Computation of Large-Scale Descriptor Systems

2020 ◽  
Vol 53 (2) ◽  
pp. 4279-4284
Author(s):  
P. Schwerdtner ◽  
E. Mengi ◽  
M. Voigt
Keyword(s):  
Large Scale ◽  
Descriptor Systems ◽  
Global Optimality

PRECISION FARMING AS AN ELEMENT OF THE 4.0 INDUSTRY ECONOMY

2020 ◽  
Vol XXII (3) ◽  
pp. 119-128
Author(s):  
Bogdan Klepacki
Keyword(s):  
Industry 4.0 ◽  
Large Scale ◽  
Agricultural Land ◽  
Necessary Conditions ◽  
Precision Farming ◽  
Technological Knowledge ◽  
Economic Effects ◽  
Digital Society ◽  
Agricultural Enterprises ◽  
Near Future

The study attempts to determine the place of precision farming in Poland, in conditions of the emergence of new megatrends in a globalizing, digital society and the economy entering the industry 4.0 era. The understanding of the concept of megatrends by various authors, their main types, as well as the basic technologies relevant to the 4.0 economy are presented. The concept and scope of precision farming as well as the necessary conditions and benefits of its use are briefly discussed. It was found that at present, the dissemination of solutions of this agriculture in Poland is still limited. This is due, inter alia, to the small share of large-scale farms (especially large agricultural land), which is a condition for obtaining favorable economic effects from using this form of farming. Progressive improvement in the area structure of agricultural enterprises, the growing concentration of production in them and the relatively lower prices of machinery and equipment for precision farming will, however, be conducive to its expansion in scope. The technological knowledge of producers is also improving. Therefore, it can be expected that the importance of this type of farming will increase in the near future.

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