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 24 for “"Logic controllers"”.
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Implementing adaptive fuzzy logic controllers with neural networks.
… an efficient approach that combines fuzzy logic and neural networks to capture these two important features required for an intelligent control system. A design method for adaptive neuro-fuzzy controllers has been proposed using structured neuro-fuzzy networks. The structured neuro-fuzzy …
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Runtime Monitoring of PLCs In Critical Real-Time Systems
… systems with special focus on programmable logic controllers. We also discuss runtime monitoring as a solution for securing critical real-time systems and explore the details and challenges of runtime monitoring by implementing our own runtime monitors based on existing design principles
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A series-connected VSC for voltage regulation, balancing and harmonics mitigation
… electronic equipment, such as computers, process controllers, programmable logic controllers, adjustable speed drives and robotic devices is increasingly used in modern industrial processes. Industrial loads thus require a supply free of voltage disturbances such as voltage dips, swells, …
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Técnicas de automatización avanzadas en procesos industriales
… discrete events dynamic systems, programmable logic controllers, simulation, supervision and graphic engineering. Initially certain automation elements are presented: PLCs, SCADAs and formalisms for modeling, analysis, and implementation of discrete systems: GRAFCET and PNs. These issues are …
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A heuristic approach for path planning for redundant robots
… 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 correspond …
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Machine to machine communication for physical security
… (WPAN), and complex coding for Programmable Logic Controllers (PLC), for delivering data to a central controller and the internet. Based on the processed data, information was generated and passed to the subscribers. The demonstration of the M2M communication system followed the developed …
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A fuzzy-logic controller for an autonomous vehicle operation in an unknown environment
… avoiding obstacles. The vehicle uses a fuzzy-logic controller to determine the corresponding change in steering. While fuzzy-logic controllers exhibit robustness under varying operating conditions, it is difficult to design a good controller when observations about the system are scarce or …
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ETSU GearUp: The Design and Development of an Alternative Energy Greenhouse.
… with control systems including programmable logic controllers and power management. There is also an emphasis on the importance of green engineering.</p><p>The high school's students have been involved in the design and development of every aspect of the system. The development of the system …
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The programmable logic controller : its prehistory, emergence and application
Programmable Logic Controllers (PLCs) are widely used devices controlling industrial machines and processes and many other diverse applications, requiring primarily, combinatorial logic and sequential control. The PLC is a hidden technology, little known by the general public and overlooked in …
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Structured Petri Nets for the Design and Implementation of Manufacturing Control Software with Fault Monitoring Capabilities
… various implementation methods on programmable logic controllers. Conclusions are then drawn on the various aspects of the work and details of further research possibilities are described.
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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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Development of a relay ladder logic programming/debugging/simulation software package with graphical user interface
<p>"Programmable Logic Controllers (PLC’s) are widely used in industry for Logic and Sequencing Control. Typically, PLC’s are programmed using Relay Ladder Logic, in which the programmer draws a circuit diagram schematic for a set of conceptual logic circuits with which to control physical …
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Using fuzzy logic for congestion control at the user-network interface of asynchronous transfer mode networks
The aim of this thesis was to design a fuzzy logic controller that could be used to prevent congestion in Asynchronous Transfer Mode networks. The controller would be located at the User-Network Interface of the network and would be used to monitor the incoming traffic. The control action would be …
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Implementation of a Testbed with SDN-enabled Communication Networks to Experiment on Physical Function Virtualization that Disrupts Reconnaissance of Cyber-Physical Infrastructures
… acquisition (SCADA) systems and the programmable logic controllers (PLCs). PLCs and SCADA exchange control signals and measurement data through a communication network. As an ICS scales, the geographical span of the communication network increases dramatically such that it is impossible to deploy …
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Mechanical Design and Learned Control System Development of Fiber Extrusion Device on Industrial Programmable Logic Controller (PLC) Platform.
… PID (Proportional–Integral–Derivative) controllers. This thesis attempts to showcase the work done to establish a framework and a “digital twin” for deploying advanced learned control algorithms on industrial platforms such as Programmable Logic Controllers (PLC) based on machine …
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On Migration of Scan Cycle Based PLC Programs to Distributed Component-Based Event Driven Software Architecture with Semantic Correctness Assurance
… of systems are designed using programmable logic controllers (PLC) under the IEC 61131-3 standard. The IEC 61131-3 standard PLCs are struggling with increasing demand for reconfigurability and flexibility in distributed control systems. The IEC 61499 standard is considered as the key of …
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Neural-Network and Fuzzy-Logic Learning and Control of Linear and Nonlinear Dynamic Systems
… 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 motion …
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An investigation into control strategies for activated sludge wastewater treatment plants.
… oxygen control methods, namely PID, Fuzzy logic and self-tuning control have been investigated, applied and their performances compared. As in most other processes, the number and location of sensors and actuators within a water treatment plant can have large implications for successful …
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Achieving Security and Reliability of Industrial Control Systems Using Data-Driven Models Informed by Physical Domain Knowledge
… data acquisition (SCADA) systems or programmable logic controllers (PLCs) and disrupting process activity. To cause these disruptions, attacks inject malicious commands or falsify sensor data to cause the physical process to deviate away from reliable states. The longer these attacks remain in the …
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Machine Learning for Modeling and Control of a Packaging Manufacturing Process
… effective and easy to implement on Programmable Logic Controllers (PLC). However, this control strategy does not account for the dynamics of the process while developing a control policy, thereby fundamentally limiting its performance capabilities. This means that intervention by operators is …
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