Optimization of the Positional Control System for Electrical Drives of Non-Supported Pendulum Suspended Ropeways

2021 ◽  
Author(s):  
Badur Tchunashvili ◽  
Mamuka Kobalia ◽  
Alexander Petrosyan ◽  
Revaz Gurgenadze ◽  
Giorgi Bulbulashvili
Keyword(s):  
Control System ◽  
Electrical Drives ◽  
Positional Control

Robotized complex control system with a modernized electric drive for calibration and transportation of glass tubes for medical and veterinary purposes

2021 ◽  
pp. 23-35
Author(s):  
V. A. Alekseev ◽  
S. P. Kolosov ◽  
M. E. Seleznev
Keyword(s):  
Control System ◽  
Electric Drive ◽  
Process Technology ◽  
Mechanical Parts ◽  
Complex Control ◽  
Electrical Drives ◽  
Complex Control System ◽  
Glass Tubes

The paper considers the process of automating calibration steklomramor for medical and veterinary industry, with the introduction of the functions of vision and of methods of intellectualization of process technology for control of electrical drives for transportation and the management of mechanical parts, with the purpose of increase of efficiency of functioning of the complex.

The position of regenerating cambia: auxin/sucrose ratio and the gradient induction hypothesis

1978 ◽  
Vol 203 (1151) ◽  
pp. 153-176 ◽  
Keyword(s):  
Control System ◽  
Induction Hypothesis ◽  
Sucrose Concentration ◽  
Vascular Differentiation ◽  
Concentration Gradients ◽  
Published Evidence ◽  
Different Types ◽  
Source And Sink ◽  
Positional Control

To account for the positions in which vascular cambia regenerate in wound callus, a gradient induction hypothesis was proposed in 1961 in terms of gradients in ‘some factor as yet unknown’. It now seems likely that the gradient is based on morphogen diffusion between source and sink on opposite sides of existing cambia, with morphogen diffusing into the adjoining wound callus. It is specifically proposed that there are two morphogens, auxin diffusing centrifugally and sucrose diffusing centripetally. The cambium then regenerates along a path where the ratio of auxin to sucrose concentration is similar to that at the original cambium, and its orientation (as regards xylem and phloem formation) is determined by the direction of the gradient in this ratio. These proposals are supported by published evidence on auxin and sucrose concentration gradients across the cambium, and on their sources, movements, and known effects on vascular differentiation. Simulations of the proposed positional control system predict patterns of cambial regeneration and orientation corresponding to those observed in four different types of would and graft.

scholarly journals Điều khiển thích nghi vị trí trên cơ sở kỹ thuật vi xử lý Phần I: Hệ thống điều chỉnh vị trí nhờ quan sát và phản hồi trạng thái

2018 ◽  
Vol 5 (4) ◽  
pp. 10-16
Author(s):  
Pham Huy Thoa
Keyword(s):  
Control System ◽  
Feedback Control ◽  
Control Problem ◽  
Control Algorithm ◽  
Position Control ◽  
The State ◽  
Control Algorithms ◽  
State Variable ◽  
Load Characteristics ◽  
Positional Control

  In order to investigate different position control algorithms for numerical controlled machines and robots, a positional control system was built on the base of  a microcomputer. In part I, the paper presents the  observer algorithm for  state variable estimation and the state variable feedback control algorithm applied to the position control of a  particular machine-table. With the hardware and software structure of the microcomputer based digital system described in this paper different control algorithms can be  realized flexibly. The position control problem for the plant with variations or  uncertainties of  parameters and load characteristics will be reported in part II.

Development of Fuzzy Controllers with Dynamics Regarding Stability Conditions and Sensitivity Analysis

2004 ◽  
Vol 8 (5) ◽  
pp. 499-506 ◽  
Author(s):  
Radu-Emil Precup ◽  
◽  
Stefan Preitl ◽  
Péter Korondi ◽  
Keyword(s):  
Sensitivity Analysis ◽  
Control System ◽  
Stability Analysis ◽  
Stability Conditions ◽  
Fuzzy Controllers ◽  
Electrical Drives ◽  
Points Of View ◽  
The Stability ◽  
Predictive Effect

The paper presents development techniques for fuzzy controllers with dynamics and with predictive effect dedicated to some electrical drives with variable inertia. The development techniques are presented regarding the stability analysis based on programs developed in Matlab & Simulink. In addition, it presents points of view regarding the sensitivity analysis on the basis of some sensitivity models associated to the control system.

scholarly journals Comparing traditional and constrained disturbance-observer based positional control

2021 ◽  
pp. 002029402198975
Author(s):  
Igor Bélai ◽  
Mikulas Huba ◽  
Damir Vrancic
Keyword(s):  
Disturbance Observer ◽  
Closed Loop ◽  
Controller Design ◽  
Quantization Noise ◽  
Pi Control ◽  
Electrical Drives ◽  
Integral Action ◽  
Binomial Formula ◽  
Double Integrator ◽  
Positional Control

This paper compares three different position controllers of electrical drives equipped by binomial [Formula: see text] th order filters, which are offering filtering properties important in a quantization noise attenuation. To demonstrate their impact, a non-filtered P-PI control is considered, as a reference. The comparative framework includes a filtered P-PI control, a filtered linear pole assignment PD controllers with a disturbance observer (DO) based integral action and its constrained modification. In terms of a total variation, depending on noise and process properties, all filtered controllers are capable to bring down the undue controller activity at the plant input from 10 to more than 100 times. Furthermore, thanks to the applied disturbance observer, the constrained control derived for a double integrator is shown to fully exploit the closed loop capabilities without any trajectory generation, taking into account the control constraints. Thus, the simplified controller design may focus on other important aspects.

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