A new approach to the design of adaptive automatic control systems for a short-range gas turbine engine

2011 ◽  
Vol 8 (1) ◽  
pp. 239-248
Author(s):  
E.V. Denisova ◽  
E.Sh. Nasibullaeva ◽  
M.A. Chernikova
Keyword(s):  
Automatic Control ◽  
Unmanned Aerial Vehicles ◽  
Control Systems ◽  
Gas Turbine ◽  
Short Range ◽  
Power Plants ◽  
Gas Turbine Engine ◽  
New Approach ◽  
Turbine Engine ◽  
Automatic Control Systems

The paper presents a new approach to the management of power plants by unmanned aerial vehicles, provides a structural diagram of the proposed automatic control systems of a gas turbine engine, presents preliminary results of modeling.

scholarly journals A simplified model of gas turbine unit adaptive control

2019 ◽  
Vol 124 ◽  
pp. 03002
Author(s):  
B. V. Kavalerov ◽  
I. R. Ziyatdinov ◽  
S. D. Basargin
Keyword(s):  
Adaptive Control ◽  
Automatic Control ◽  
Control Systems ◽  
Gas Turbine ◽  
Power Plants ◽  
Reference Model ◽  
Automatic Control Systems ◽  
Operating Modes ◽  
Model Complex ◽  
Simulation Parameters

The article explores the possibilities of building automatic control systems for gas turbine power plants. The use of the principles of adaptive control with a reference model and a signal effect is being studied. As an adaptation method, a method based on the Lyapunov function is used, in order to reduce the time for searching for an extremum. There is a need to ensure the specified indicators of electricity the quality in a constantly changing electrical load and changes in operating modes of the power plant in gas turbine units. The article presents a model of a gas turbine installation for the study of adaptive control. It is shown that the improvement of one coordinate is possible to obtain due to some deterioration of the other coordinate. For further study of this problem, a simplified second-order dynamic model has been constructed. With the help of such a model, complex studies of various stages of adaptive control were carried out. Results were obtained by varying the parameters of adaptive control and simulation parameters. The research results are designed to find the optimal ratios of adaptive automatic control systems parameters for power industry gas turbine plants.

LV100 AIPS Technology—For Future Army Propulsion

1992 ◽  
Author(s):  
Walter Brockett ◽  
Angelo Koschier
Keyword(s):  
Control Systems ◽  
Gas Turbine ◽  
Fuel Consumption ◽  
Cooling System ◽  
Gas Turbine Engine ◽  
Air Filtration ◽  
Turbine Engine ◽  
Overall Design ◽  
Armored Vehicle ◽  
And Control

The overall design of and Advanced Integrated Propulsion System (AIPS), powered by an LV100 gas turbine engine, is presented along with major test accomplishments. AIPS was a demonstrator program that included design, fabrication, and test of an advanced rear drive powerpack for application in a future heavy armored vehicle (54.4 tonnes gross weight). The AIPS design achieved significant improvements in volume, performance, fuel consumption, reliability/durability, weight and signature reduction. Major components of AIPS included the recuperated LV100 turbine engine, a hydrokinetic transmission, final drives, self-cleaning air filtration (SCAF), cooling system, signature reduction systems, electrical and hydraulic components, and control systems with diagnostics/prognostics and maintainability features.

scholarly journals A Method for Assessing the Stability of Digital Automatic Control Systems (ACS) with Discrete Elements. Hypothesis and Simulation Results

2020 ◽  
Author(s):  
Vladimir Kodkin ◽  
Alexander Baldenkov ◽  
Alexander Anikin
Keyword(s):  
Automatic Control ◽  
Control Systems ◽  
Variable Structure ◽  
Sampling Interval ◽  
Discrete Elements ◽  
Digital Controllers ◽  
Variable Structure Systems ◽  
New Approach ◽  
Automatic Control Systems ◽  
The Stability

The article presents a new approach to the analysis of the stability of automatic systems with discrete links.In almost all modern automatic control systems, there are links that break signals in time. These are power controlled switches - transistors or thyristors operating in a pulsed mode and digital links in regulators.Time discretization significantly affects the stability of processes in the automatic control system. The theoretical analysis of such systems is rather complicated and requires a significant change in engineering approaches to analysis. In connection with the improvement of digital controllers and a significant increase in their performance, in recent years this problem has practically not been remembered. However, its mathematical "content" has not changed since the 80s of the 20th century, when discreteness began to play a major role among the problems hindering progress in automatic control systems, in terms of the transition to digital systems.In this paper, a new approach is proposed, which consists in interpreting the sampling operation by a link with the proposed frequency characteristic, which determines the suppression of input high-frequency signals. This link greatly simplifies engineering calculations and demonstrates the new capabilities of sampling systems. These possibilities include the rational distribution of digitalization resources - the number of bits and the sampling interval between the regulator channels, depending on the frequency range of the efficiency of these channels. Theoretical statements have been verified and confirmed by simulation. It is shown how this approach makes it possible to formulate new principles of construction of seemingly well-known controllers - PID controllers and variable structure systems (VSS).

scholarly journals Повышение астатизма системы автоматического управления путем введения положительной обратной связи

2020 ◽  
Vol 43 (2) ◽  
Author(s):  
ANDREY KHANNANOV ◽  
KIRA CHUPINA ◽  
VALERY USOLTCEV
Keyword(s):  
Automatic Control ◽  
Control Systems ◽  
Positive Feedback ◽  
Power Plants ◽  
Proportional Integral ◽  
Automatic Control Systems ◽  
Non Linear ◽  
Additional Positive Feedback

Подчиненные системы автоматического управления (САУ) широко используются в технике, в том числе в судовых энергетических установках. Необходимость ограничения параметров объекта управления, таких как синхронный генератор или судовой электропривод, делает их нелинейными. Применение пропорционально-интегральных регуляторов создает проблему «интегрального насыщения», возникновения свободных движений в САУ при сходе регуляторов с ограничения. Авторами предлагается повысить астатизм САУ и решить проблему «интегрального насыщения» путем введения дополнительной положительной обратной связи с выхода объекта управления в пропорциональный канал регулятора. Эффективность таких САУ исследовалась нами с помощью анализа математических моделей нелинейных САУ и их цифрового моделирования. Результаты исследования: описана математическая модель одного из контуров САУ с дополнительной положительной обратной связью. Доказано, что введение такого вида связи позволяет увеличить астатизм САУ и исключить эффект «интегрального насыщения» при астатизме первого порядка, что повышает точность САУ при отработке управляющих сигналов. Предложен новый способ исключения эффекта «интегрального насыщения» в широкодиапазонных регуляторах напряжения судовых синхронных генераторов промысловых систем освещения без применения аппаратных защитных средств. Таким образом, доказана эффективность введения дополнительной положительной обратной связи на увеличение точности САУ и исключения эффекта «интегрального насыщения». Отмечена низкая чувствительность эффекта введения положительной обратной связи к изменению параметров САУ. Subordinate automatic control systems (SACS) are widely used in engineering inclusive of ship power plants. The need to limit specific parameters of the object makes them non-linear. The use of proportional-integral regulators leads to the problem of integral saturation, the emergence of free movements in SACS when the regulators descend from the limit. The authors propose to increase astatism of SACS and solve the problem of integral saturation by introducing additional positive feedback.

Sign in / Sign up

Export Citation Format

Share Document