The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
In order to design reasonable guidance and control systems for an unmanned aerial vehicle (UAV),which will be used as a platform to do the flight test to confirm the thought that was attacking the target with bank-to-turn (BTT) maneuvering in the terminal phase. To obtain the control model of this UAV, the flight test experiment designed for identification was done firstly. Using the least square...
The heat exchange of distilled water unit is a very complex process.The main steam pressure and temperature are tightly coupled with the pressure of raw water, temperature and flow in the circuit, and show non-linear relationship. There are two important parameters need to be controlled in water production process: conductivity and temperature of distilled water at the exit. This is a typical double...
In order to deal with the control difficulties of the dredger's dynamic positioning system under large disturbances caused by dredging operation, a disturbances compensating dynamic surface control method is proposed to be used in the dredger's dynamic positioning system. Disturbances can be measured and compensated by the adding forces sensors. The proposed robust controller guarantees the semi-globally...
This work describes a novel modeling and simulation approach of brushless DC motor control system depended on analysis of it's mathematical model. The brushless DC motor ontology model, the voltage type inverter circuit model, the hysteresis current tracking comparative model and the PID speed controller model were constructed in the Simulink environment of Matlab. S-function was used in modeling...
By analyzing luminous process and volt-ampere characteristics of gas discharge lamp, a piecewise linear regress mathematical model is proposed. An illuminated loop-locked intelligent adjust light controller is designed by using power switching devices and SPWM variable voltage variable frequency controlling means. The above design can modify pulse and control carrier-to-noise ratio. Within a certain...
By mapping the pump and the injector of 16V265H diesel engine, it comes to the conclusion of the structural parameters of the fuel injection system for electronic control unit pump. GT-Fuel is used to establish and perform the simulation model of fuel injection system for 16V265H diesel engine. Compared with that of local locomotive fuel injection system, the performance curve of 16V265H diesel engine...
This article introduces the make-up and principle of intelligent wheat dampen control system, establishes system mathematical models, analyses PID control and the fuzzy roles of parameter on-line dynamic self -tuning, develops a fuzzy PID controller.
With the help of the Simulink toolbox of MATLAB the dynamic simulation model of PMLSM is built. Then according to the principle of robust controlling and the features of robust H∞ controller. The control system modeling and simulation experiments by use of the Simulink toolbox of MATLAB is designed. and the results show that the controller not only has the good tracking performance for the speed controller,...
This paper describes a fuzzy control system and simulation for ultrasonic motors. Although ultrasonic motor has much merit, such as small size, light weight, high precision, fast control dynamics and large driving force when low speed, etc. However, the nonlinear dynamic characteristic and the accurate mathematical model is difficult to obtain. So the traditional control method is almost no effect...
In this paper, based on parameter self-tuning fuzzy PID controller, a fuzzy inference method is utilized to realize automatic regulating PID parameter, and the application of the controller in a system is studied with MATLAB. The results of simulation indicate that the controller gives a good control performance and has a high reference value for further applications.
The permanent magnet synchronous motor (PMSM) is increasingly playing an important role in alternating current(AC) transmission system. Recently, lots of researches have been investigated for the PMSM system without speed and position sensors. The Vector-control system based on fuzzy self-tuning PID is proposed in this paper. The new algorithm based on fuzzy self-tuning PID can improve the performance...
Traffic congestion has been a long-held social problem because of the increasing number of vehicles. In this paper, we apply a pheromone model to a traffic signal control in order to alleviate the traffic congestion. The pheromone model is a tool to communicate among insects (e.g., ants) for their crowd action. In our target problem, the pheromone is strewed by vehicles in a trail across the road...
For the Italian Navy Multi Mission Frigates (Fremm) program, actually in progress (first ship will be delivered by Fincantieri in 2012), will be installed an advanced Ship Management System (SMS), evolution of the “Cavour” ship automation system, supplied by SEASTEMA (company owned by Fincantieri and ABB).
This paper presents a modified particle swarm optimization (MPSO) algorithm to design an optimal multi input multi out (MIMO) fuzzy logic controller for a cement mill process. The membership function, rule base and the scaling factor of the multi input multi output FLC is tuned for optimal control performance using MPSO by minimizing the Integral absolute error for minimum and maximum operating setpoints...
Inverted Pendulum is a nonlinear, coupling, variable and naturally unsteady system. In order to control the system, the mathematic model through lag range equation was set up and the LQR Controller was designed in this paper. Last, the author analyzes the control results and obtains superior parameters through simulation. The experimental results show that LQR control is more effective and robust.
In this paper, an impulsive reaction-diffusion system is studied. Sufficient conditions are obtained for the global existence of solution for the impulsive system. By considering the equiattractivity property of the impulsive error system, the impulsive synchronization of the reaction-diffusion system is investigated, and the sufficient conditions leading to the equiattractivity property are obtained,...
Impact angle control has been widely used in a variety of guided weapons. For anti-ship or anti-tank weapons, the terminal impact angle is important for warhead effect. This paper deals with the guidance and control system to impact a target with a desired impact angle for precision guided bombs such as JDAM. The guidance and control system is composed of three-loop autopilot and impact angle control...
An abnormal driving state recognition method is proposed in this paper. The basic idea is to regard the driving behavior as a feed back control system; the input signal is vehicle lateral position; the output signal is steering wheel angle. The control system, i.e., the driving behavior, is modeled with normal driving data. And then the model is used to fit the driving data of unknown driving state...
Recently, as the amount of trade among nations has increased, a greater amount of the transport by ship is required and container ships have been enlarged to satisfy this requirement. However, there are some nations or harbors that have the problem of lack of sufficient area for the anchoring of large ships. To solve this problem, the Mobile Harbor (MH) has been proposed conceptually at KAIST. Since...
This paper discusses `the physical Karnopp model' and `the modified Karnopp model' that were proposed for dynamic simulation, friction compensation, and haptic rendering of surface friction, and shows that when these models are used for haptic display of virtual surface friction, the transparency can be deteriorated. Also, to remedy this problem, we propose a `more physically oriented Karnopp model',...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.