Optimizing Control Methods of Airport Pipeline Refueling Process

2015 ◽  
Vol 738-739 ◽  
pp. 1007-1011
Author(s):  
Xiao Zhong Zhang ◽  
Fan Qin Meng ◽  
Jie Hui Wang
Keyword(s):  
Intelligent Control ◽  
Control Methods ◽  
Fuzzy Pid Control ◽  
Pipe Line ◽  
Optimizing Control ◽  
The Stability ◽  
Stability And Accuracy ◽  
Classical Control ◽  
And Control ◽  
Better Than

Due to the non-linearity and long delay of airport pipe line refueling system, it is difficult for classical control methods to ensure stable pumping pressure and refueling flow. To improve the stability of the refueling process, the paper introduces human-simulated intelligent control (HSIC) method to the recognization of refueling status, online self-adjusting and control of refueling parameters. Simulation shows that the stability and accuracy of HSIC control methods were better than that of classical PID and fuzzy PID control.

Modelling and control of manipulators with flexible links working on land and underwater environments

Robotica ◽  
2010 ◽  
Vol 29 (3) ◽  
pp. 461-470 ◽  
Author(s):  
Levent Gümüşel ◽  
Nurhan Gürsel Özmen
Keyword(s):  
Fuzzy Control ◽  
Control Method ◽  
Robot Manipulator ◽  
Control Methods ◽  
Control Laws ◽  
Linear Ordinary Differential Equations ◽  
Intelligent Technique ◽  
Wide Range ◽  
Classical Control ◽  
And Control

SUMMARYIn this study, modelling and control of a two-link robot manipulator whose first link is rigid and the second one is flexible is considered for both land and underwater conditions. Governing equations of the systems are derived from Hamilton's Principle and differential eigenvalue problem. A computer program is developed to solve non-linear ordinary differential equations defining the system dynamics by using Runge–Kutta algorithm. The response of the system is evaluated and compared by applying classical control methods; proportional control and proportional + derivative (PD) control and an intelligent technique; integral augmented fuzzy control method. Modelling of drag torques applied to the manipulators moving horizontally under the water is presented. The study confirmed the success of the proposed integral augmented fuzzy control laws as well as classical control methods to drive flexible robots in a wide range of working envelope without overshoot compared to the classical controls.

scholarly journals Enhancement the stability of power system using optimal location of FACTS devices

2020 ◽  
Vol 18 (2) ◽  
pp. 648
Author(s):  
Ali Najim Abdullah ◽  
Ahmed Majeed Ghadhban ◽  
Hayder Salim Hameed ◽  
Husham Idan Hussein
Keyword(s):  
Power Network ◽  
Performance Factors ◽  
Facts Devices ◽  
Clearing Time ◽  
Thyristor Controlled Series Capacitor ◽  
Overall Performance ◽  
Set Up ◽  
The Stability ◽  
And Control ◽  
Better Than

<p><span>This paper proposes a steady-state of the Static Var Compensator (SVC) &amp; Thyristor Controlled Series Capacitor (TCSC) set up for enhancing the damping overall performance and growing the integral clearing time (CCT) of a power network. The indispensable clearing time is carried out through increasing the time fault interval until the gadget loses stability. Increasing the CCT can be contribute to reliability of the safety gadget, decrease the protection machine ranking and cost. In order to attain most enhancement of machine stability via optimizing location, sizing and control modes of SVC and TCSC. Models and methodology for putting and designing shunt FACT’s units SVC (injected reactive strength Q) and series FACT’s devices TCSC (chose capacitive region) are examined in a 6-bus system. Performance factors are described to show validation of SVC and TCSC on extraordinary conditions. It is proven that the SVC is better than TCSC. </span></p>

scholarly journals Designing Stipulated Gains of Aircraft Stability and Control Augmentation Systems for Semiglobal Trajectories Tracking

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
Mohamed Mostafa Y. B. Elshabasy ◽  
Yongki Yoon ◽  
Ashraf Omran
Keyword(s):  
Control Method ◽  
Simple Procedure ◽  
Operating Conditions ◽  
Stability And Control ◽  
Wide Range ◽  
Flight Envelope ◽  
The Stability ◽  
Classical Control ◽  
And Control ◽  
Aircraft Stability And Control

The main objective of the current investigation is to provide a simple procedure to select the controller gains for an aircraft with a largely wide complex flight envelope with different source of nonlinearities. The stability and control gains are optimally devised using genetic algorithm. Thus, the gains are tuned based on the information of a single designed mission. This mission is assigned to cover a wide range of the aircraft’s flight envelope. For more validation, the resultant controller gains were tested for many off-designed missions and different operating conditions such as mass and aerodynamic variations. The results show the capability of the proposed procedure to design a semiglobal robust stability and control augmentation system for a highly maneuverable aircraft such as F-16. Unlike the gain scheduling and other control design methodologies, the proposed technique provides a semi-global single set of gains for both aircraft stability and control augmentation systems. This reduces the implementation efforts. The proposed methodology is superior to the classical control method which rigorously requires the linearization of the nonlinear aircraft model of the investigated highly maneuverable aircraft and eliminating the sources of nonlinearities mentioned above.

Study on Fuzzy-PID Control Simulation of Diesel Engines Electronic Governor

2013 ◽  
Vol 331 ◽  
pp. 263-266
Author(s):  
Yan Qiang Li ◽  
Zhi Gang Yao ◽  
You Lin Xu
Keyword(s):  
Pid Control ◽  
Engine Speed ◽  
Control Methods ◽  
Fuzzy Pid ◽  
Control Effect ◽  
Fuzzy Pid Control ◽  
Parallel Connection ◽  
Composite Control ◽  
Speed Regulation ◽  
Better Than

In this paper, two types Fuzzy-PID composite control methods were studied. The Fuzzy-PID alternately control and parallel connection control were simulated by MATLAB SIMULINK. The simulation conclusions were that Fuzzy-PID composite control effect was better than FUZZY control or PID control, and Fuzzy-PID parallel connection control effect was better than alternately control on diesel engine speed regulation.

Design of Automatic Spot Welding Control System about the Vehicle Compartment Side Plate Based on PLC

2013 ◽  
Vol 441 ◽  
pp. 801-804
Author(s):  
Yi Lun Han ◽  
Jing Wang ◽  
Zong Bing Zhang ◽  
Ming Zhang
Keyword(s):  
Intelligent Control ◽  
Spot Welding ◽  
Welding Process ◽  
Response Speed ◽  
Welding Parameter ◽  
Side Plate ◽  
Compound Control ◽  
The Stability ◽  
And Control ◽  
Control Accuracy

In order to improve the welding efficiency of vehicle compartment side plate, the stability of welding parameter and control accuracy, the thesis applies advanced intelligent control theory (fuzzy and PID compound control) and multi-sensor fusion technology and combines with the automatic spot welding process, using the Mitsubishi FX2N-80MT-001 programmable controller and GT1155-QSBD-C touch screen, achieved the automatic spot welding control of the vehicle compartment side plate. Experimental results show that the system’s response speed, control accuracy and stability can meet the requirements of production.

The Research on Human Simulating Intelligent Control of the Inverted Pendulum Based on Feedback Linearization

2013 ◽  
Vol 710 ◽  
pp. 511-514 ◽  
Author(s):  
Ling Zhang ◽  
Shi Zhong Hu
Keyword(s):  
Intelligent Control ◽  
Feedback Linearization ◽  
Inverted Pendulum ◽  
Interference Control ◽  
Lqr Control ◽  
Partial Feedback Linearization ◽  
Partial Feedback ◽  
The Stability ◽  
Triple Inverted Pendulum ◽  
Better Than

In this paper, the partial feedback linearization was made for the non-linear model of the triple inverted pendulum, by means of the differential geometry. Then the simulation and analysis of tracking control and interference control were made, which combined with the human simulating intelligent control and LQR control in the system. The results show that the human simulating intelligent control can achieve better control results than the LQR control, it not only can effectively improve the stability of the system, but also the anti-interference ability is better than LQR control, it meets the control requirements of the triple inverted pendulum.

Application of Improved Fuzzy PID Control Algorithm in Heating Furnace

2011 ◽  
Vol 383-390 ◽  
pp. 760-763
Author(s):  
Hong Jun Wang ◽  
De Xiong Li ◽  
Hui Juan Qi ◽  
Li Na Liu
Keyword(s):  
Pid Control ◽  
Control Algorithm ◽  
Gas Flow ◽  
Control Program ◽  
Fuzzy Pid ◽  
Fuzzy Pid Control ◽  
Modeling And Control ◽  
And Control ◽  
Fuzzy Control Algorithm ◽  
Better Than

e furnace of steel plant is a complex controlled object and it has the properties of nonlinear, Time-varying and delay. Its modeling and control are very difficult. The temperature control of the furnace mainly depends on the control of gas flow. Therefore, the study of a reasonable gas flow control program is the key to increase the level of heating control. In this paper, an improved fuzzy PID control algorithm is proposed, in which, PID control algorithm and fuzzy control algorithm are integrated together, and its characteristics are improved according to feature of furnace. This made the algorithm to have good adaptability and Interference capability. The simulation results show that the improved control algorithm is better than traditional algorithm in overcoming the non-liner, delay of the object and the performance is excellent.

Intelligent Control Method of Ground to Air Missile Based on FCMAC

2011 ◽  
Vol 128-129 ◽  
pp. 168-171
Author(s):  
Gang Li ◽  
Hao He ◽  
Gang Fang ◽  
Jian Feng Wu
Keyword(s):  
Neural Network ◽  
Intelligent Control ◽  
Fuzzy Neural Network ◽  
Control Method ◽  
Basic Structure ◽  
Control Methods ◽  
Missile Guidance ◽  
Guidance And Control ◽  
Fuzzy Neural ◽  
And Control

Intelligent control methods of missile guidance and control system (GACS) are studied in this paper. Secondly, the component and principle of GACS is introduced. Based on the fuzzy neural network, this paper constructs a basic structure of the intelligent control method of missile. Meanwhile, a new intelligent control method of rolling channel of missile based on Fuzzy Cerebella Model Articulation Controller (FCMAC) is designed. Under complicated environmental conditions, the missile can be accurately controlled with this method. Finally, the application value is illustrated. It’s very meaningful to improve the combat capability.

Flight control and flight experiments of a tilt-propeller VTOL UAV

2018 ◽  
Vol 40 (8) ◽  
pp. 2454-2465 ◽  
Author(s):  
Zafer Öznalbant ◽  
Mehmet Ş. Kavsaoğlu
Keyword(s):  
Flight Control ◽  
Equations Of Motion ◽  
Control Methods ◽  
Stability And Control ◽  
Flight Mode ◽  
Aerial Vehicle ◽  
The Stability ◽  
And Control ◽  
Pitch Tilt ◽  
Fixed Pitch

The purpose of this work is to present a study on the stability and control of an unmanned, fixed wing, vertical take-off and landing aerial vehicle. This airplane is driven by a fixed-pitch tilt-propeller system with the capability of vertical take-off and landing as well as conventional flight. The novelty of the vehicle is the use of a fixed-pitch propeller system instead of variable-pitch tilt-rotors. There are three flight modes: vertical, transitional and conventional flight modes. Each flight mode has different dynamic characteristics. Therefore, these modes each need dedicated flight control methods. In this paper, the equations of motion are generated by modelling the aerodynamic and propulsion forces and moments. After performing trim condition calculations, longitudinal stability characteristics are investigated for each flight mode. The control methods are described for vertical, transitional and conventional flight modes. Stability augmentation systems, which consist of proportional and proportional/integral controller, are applied. A number of flight tests, including vertical, transitional and conventional flights, have been successfully performed with a prototype aircraft.

The Coordinated Control Strategies of Voltage Stability Based on Expert Rules

2013 ◽  
Vol 732-733 ◽  
pp. 772-777
Author(s):  
Fei Zhang ◽  
Chun Lin Guo ◽  
Ling Yun Jiang ◽  
Lin Yang ◽  
Jian Zhang
Keyword(s):  
Voltage Stability ◽  
Control Strategies ◽  
Coordinated Control ◽  
Control Methods ◽  
Stability Problems ◽  
Process Characteristics ◽  
Control Rules ◽  
Facts Devices ◽  
And Control ◽  
Better Than

According to the process characteristics and control methods of different voltage stability problems, the paper researches control rules and strategies of the voltage stability, then sets up controllers of FACTS devices on a simulation platform, and puts forward the coordinated control strategies of voltage stability problems based on expert rules. The simulation studies have shown that control effects of multiple FACTS devices are significantly better than a single device, and the coordinated control methods based on the expert rules is more conducive to improving voltage stability.

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