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In this work, design and control system development of a gas-electric hybrid quad tilt-rotor UAV with morphing wing are presented. The proposed aircraft has an all carbon-composite body, gas-electric hybrid electric generation system for 3 hours hovering or up to 10 hours of horizontal flight, a novel configuration for VTOL and airplane-like flights with minimized aerodynamic costs and mechanical...
This paper shows control results of simulations on mathematical model and real measurements on the real model of the water tank. The level in the tank is controlled via input volumetric flow rate through the proportional solenoid valve. The adaptive approach with the recursive identification was employed here for controlling of this system. The controller could be tuned by the choice of the pole position...
The most Grid-connected inverters for photovoltaic (PV) system use the three-level grid-connected inverter, which generates the three voltage level at the output of inverter. It can inject the sinusoidal current to utility grid through a set of filter as shown in Fig. 1. Even though, the three-level grid-connected inverter can be operated in high efficiency, but it still has some drawback, such as,...
In Software Defined Networks (SDN), each flow table entry is dedicated to an individual flow and has an idle timeout value associated with it. Due to limited flow table and controller processing resources, SDN suffers from scalability problem especially when dealing with a large number of flows. As Instant Messaging (IM) applications usually generate too many different flows and idle timeout has effect...
In this paper, we introduce an efficient method to control the propagation stopping condition locally for asynchronous binary propagation networks. Additional switches are introduced to the Wired-OR pull-down path branches, where the switches are controlled by the PE outputs from the neighborhood. An example for a 1-D case for object center pixel extraction is given with simulation results for asymmetric...
In recent years, the development of electric vehicles has gained a lot progress. Many infrastructures are being installed for the electrical vehicles. However, due to the limited power availability, not every electric vehicle can be charged simultaneously in parking lots. This paper proposed a simulation environment which is a Genetic Algorithm based charging control system that can achieve more efficient...
This paper presents a control strategy for a brushless DC motor (BLDCM) drive with a new converter topology. The new topology is based on the conventional voltage-fed inverter, but includes an additional source such as a capacitor or a battery, and requires connection to the BLDCM neutral. The objective of the proposed control strategy is to control the otherwise unregulated voltage across the additional...
We describe a software system known as the Plasma Control System Simulation Platform (PCSSP) that is being constructed to support development of the ITER plasma control system. When mature, PCSSP will provide support for industry standard practices such as model-based controller design, simulation testing of controllers, auto-generation of controller code, hardware- and software-in-the-loop testing,...
Tokamak Simulation Code (TSC) is a numerical model of an axisymmetric free boundary tokamak plasma and the associated control systems. The time dependence of ohmic discharges of China Fusion Engineering Test Reactor (CFETR) has been simulated using TSC in this work. The TSC numerical model, CFETR device and plasma parameters are presented. According to the CFETR design requirements, the poloidal field...
A new direct synthesis method for tuning the Pseudo-Derivative Feedback controller for integrating as well as stable or unstable first order processes with time delay is presented. The proposed control structure and tuning method ensure smooth closed-loop response to set-point changes, fast regulatory control and sufficient robustness against parametric uncertainty. Simulation results show that the...
The basis of a new approach of hybrid systems, called the mathematical-heuristic modelling, and its applications in analysis, simulation and stability of hybrid control systems are presented. The mathematical-heuristic model of a high complexity system is a hybrid model including a continuous and/or a discrete simulation model (a differential and/or a discrete-time model), a discrete event simulation...
Petri nets are an effective way to model, analyze, and control deadlocks in automated manufacturing systems (AMS). There are three important criteria in designing and evaluating a liveness-enforcing supervisor for a system to be controlled: behavioral permissiveness, structural complexity, and computational complexity. A maximally permissive supervisor can lead to high utilization of system resources...
Nowadays advanced software programs are actively used in the field for simulation and modeling. LabVIEW and MATLAB/Simulink are both graphical programming languages, allowing a more efficient method to perform and analyze control systems. Therefore, they are the most commonly used software programs for these purposes. Moreover; in some applications — like hardware in the loop systems, flight simulations...
In this paper, a Graphical User Interface (GUI) is developed in MATLAB environment for educational and research purpose in the field of control engineering. This interactive user-friendly software focuses on the behavior and performance analysis of linear time invariant control system in time as well as frequency domain. The user can input the dynamics of the system in the form of transfer function...
Historically, all engineering systems have been studied, analyzed and implemented by approximating the governing dynamics associated with the system by an Integer Order model. Although these models were able to replicate a close to real time working behavior, an exact model of these systems was always subject matter of research. With the advancement in technology an accurate model understanding of...
The conventional three term, Proportional/Integral/Derivative (PID) controllers have established their presence in industry due to the satisfactory performance exhibited by them. The present paper discusses a class of PID controllers with a sliding model transfer characteristics. The inherent features of the three terms are effectively utilized through this sliding model transfer characteristics....
According to the characteristics of two software Labview and Matlab, this paper presents a co-simulation method of Labview and Matlab. This method will combine the advantages of both software by mixing programming and co-simulation. Through the example of Direct Torque Control (DTC) fuzzy controlling, this paper introduces the design of the fuzzy controller in the Labview, and describes a method to...
A study regarding the swing-up and stabilization problem of a double pendulum on a cart is presented. Current methods of feed forward control, energy based control, and passivity based control are used to select a design for the swing-up controller. The stabilization is done using an LQR controller. The nonlinear controller is analyzed with respect to being approximated by a neural network [1].
This article deals with a case study of application of wireless sensor networks for control of emergency situations in an automated manufacturing. The control design approach of manufacture, which is using as self-energy production solutions and municipal utility services, is discussed. The correlation of manufacturing processes with emergency situations in critical infrastructure is taken in the...
In this paper, we address the communication overhead problem between OpenFlow controllers and switches due to table-miss in a flow table. For dealing with table-miss, the switch informs the controller by sending a packet-in message to make the controller perform further actions. However, this packet-in procedure to deal with table-miss may cause a controller overhead when one controller has to process...
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