Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 40 for “"Fuzzy logic controller"”.
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A REGION-SENSITIVE FUZZY LOGIC CONTROLLER FOR pH
… to a host of control strategies. In recent years fuzzy logic has been employed successfully to pH control (e.g., Galluzzo et al., 1991, Parekh et al., 1994 and Tan et al., 1996). The advantages of a controller based on fuzzy logic are that it is nonlinear and does not require an analytical model …
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An adaptive fuzzy logic controller for intelligent networking and control
In this thesis, we present a fuzzy logic control scheme to regulate the flow of traffic approaching a set of intersections. An adaptive Fuzzy Logic Traffic Controller (FLTC) is used to adjust the green phase split of the north-south and east-west approaches of a set of traffic signals based on the …
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Development and implementation of a methodology for fuzzy logic controller design
… is devoted to development of the methodology of fuzzy logic controller design and implementation. The thesis introduces a universal fuzzy logic controller structure. The structure proposed combines three main functions and two support functions. The support functions are implementing novel fuzzy …
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Simulation of speed control brushless DC motor using gaussian fuzzy logic controller
This paper presents a control scheme of a Fuzzy Logic for the brushless direct current (BLDC) motor drives. The BLDC motor has some advantages compare to others type of motors. However, the nonlinearity of this motor drive characteristics cause it is difficult to handle using conventional …
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Development of dc-dc converter for dc motor using fuzzy logic controller
… if connected to a load. The use of conventional controllers has long been used to control the dc motor and reduce overshoot starting. Fuzzy logic controller is one controller that can be used to control the speed of a dc motor including motor control overshoot starting. To see the effectiveness …
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A fuzzy-logic controller for an autonomous vehicle operation in an unknown environment
A controller is developed to guide a four-wheeled vehicle through an unknown environment. The vehicle is equipped with an ultrasonic sensor that can rotate to survey the neighboring environment. A new path planning algorithm is developed that reduces the computational time while avoiding obstacles. …
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A transputer based prototype for a fuzzy logic controller with tuning and simulation capabilities
… for streamlining development and maintenance of fuzzy logic systems applied to industrial control. That method provides for tuning the rules and parameters for fuzzy control of an industrial process, without interfering in the production process itself. The capability to simulate a real-world …
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AC motor speed performance improvement using fuzzy logic control
This project focuses on the fuzzy logic controller design to control single phase induction motor. The controller strategy is done through phase angle control method. The phase angle is controlled by controlling the firing angle delay of the triac. This controller system is implemented and …
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Virtual Synchronous Machine based Fuzzy V-F Control for VSC of Battery Storage System for Seamless Performance of Microgrid
… mode during islanded operation of microgrid. A fuzzy logic controller has been designed for V-F control during the islanded mode of operation of microgrid. The fuzzy logic controller can efficiently deal with non-linearity of power system as it does not depend on the mathematical model of the …
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A heuristic approach for path planning for redundant robots
… the human experience; The proposed method uses a fuzzy logic controller to generate the magnitude of the angles needed to move the end effector to the next target point. The inputs to the controller are the desired displacement of the end effector and the elements of the jacobian matrix that …
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Online position control system using incremental fuzzy control
In the field of fuzzy control theory, fuzzy logic controllers is one of the most active research areas and are particularly useful in controlling various types of physical processes. Therefore, this project also involved in usage of the fuzzy logic controller. Main objective of this project is to …
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Analysis and traction control of a rocker-bogie planetary rover
… system. The analysis leads to the design of a fuzzy logic controller that increases rover traction and mobility. Analytical and experimental studies are performed to validate the analysis and control scheme.
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Neural-Network and Fuzzy-Logic Learning and Control of Linear and Nonlinear Dynamic Systems
… forces produced by them, and a neural-network/fuzzy-logic controller. LAMP is based on a source-panel method to model the flowfield around the ship, whereas the fins are modeled by a general unsteady vortex-lattice method. The ship is considered to be a rigid body and the complete equations of …
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Development of the finite and infinite interval learning control theory
… control tasks. To widen the application of FIL, Fuzzy Logic Learning Control scheme is proposed, in which FIL is added to a Fuzzy Logic Controller directly. By taking advantage of CEF, the FIL is extended to the IIL for both parametric and norm-bounded uncertainties. To facilitate the practical …
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Control of Rotary Cranes Using Fuzzy Logic and Time-Delayed Position Feedback Control
… control preferable. In this work, two types of controllers are studied: fuzzy logic and time-delayed position feedback controllers. The fuzzy logic controller is introduced first with the idea of split-horizon; that is, to use some fuzzy engines for tracking position and others for damping load …
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Analysis of microgrid with renewable generation and energy storage system
… that integrates RESs and ESSs, incorporating a fuzzy logic controller (FLC)-based energy management system (EMS). The MG operation is evaluated in both grid-connected and islanded modes. A frequency analysis reveals that the point of common coupling (PCC) frequency is controlled within the …
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On the use of fuzzy logic to control paralleled DC-DC converters
The objective of the thesis is to introduce a new fuzzy logic control application, develop the associated mathematical theory and prove the concept and its advantages through comparative simulation with existing, classical, methods. A stable fuzzy logic controller for the master-slave current …
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Gaze control for remote robotics
… in the predicted target position. Finally, a fuzzy logic controller which guides a robot through use of the user's gaze is presented. These methods illustrate how gaze can enhance performance while ensuring an interface is natural and comfortable to use.
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Intelligent Parameter Adaptation for Chemical Processes
… for minimization routines. A decentralized controller is first developed that stabilizes the plant to set point changes and disturbances. Subsequently, a genetic algorithm calculates input parameters of the decentralized controller for minimum operating cost performance. Genetic algorithms …
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The field oriented control of a permanent magnet synchrounous motor (PMSM) by using fuzzy logic
… magnet synchronous motor (PMSM) drive system of Fuzzy Logic Controller (FLC) and proportional-integral PI for speed control in closed loop operation. To perform speed control of typical PMSM drives, PI controllers and FOC method are classically used. PI Controller controller suffers from the …
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