Search results for "roller"
showing 10 items of 247 documents
Position Control of a Mobile Robot through PID Controller
2019
Abstract In this paper, the implementation and tuning steps of the PID controllers were proposed for the position control of a mobile robot with differential steering. The purpose of this robot was the participation in a European amateur robotics contest, the mobile robot being developed in the Engineering Faculty of Sibiu, Department of Industrial Machines and Equipment. After a brief introduction of the mobile entertainment robot, followed by description of the robot’s different components and traction principles, several principles of tuning the PID controller for the mobile robot are presented. The paper ends with some general conclusions based upon the results obtained from studying th…
Design and Implementation of Acoustic Source Localization on a Low-Cost IoT Edge Platform
2020
The implementation of algorithms for acoustic source localization on edge platforms for the Internet of Things (IoT) is gaining momentum. Applications based on acoustic monitoring can greatly benefit from efficient implementations of such algorithms, enabling novel services for smart homes and buildings or ambient-assisted living. In this context, this brief proposes extreme low-cost sound source localization system composed of two microphones and the low power microcontroller module ESP32. A Direction-Of-Arrival (DOA) algorithm has been implemented taking into account the specific features of this board, showing excellent performance despite the memory constraints imposed by the platform. …
Frequency Regulation of Hybrid Power System by Optimized Adaptive Fuzzy PID Controller
2020
In this study, an adaptive fuzzy PID (AFPID) regulator has been proposed for frequency control of hybrid power system. For controller parameter optimization, an upgraded Whale Optimization Algorithm (WOA) has been employed. In the proposed Upgraded WOA (UWOA) technique, a cosine function is incorporated in the original WOA for determining control parameter to manage the position of whales throughout optimization procedure. Furthermore, scaling factors are employed in original WOA to adjust the travel of whales in search procedure. Proposed UWOA technique is employed to design an AFPID controller for frequency regulation of a hybrid power system It is demonstrated that UWOA technique out per…
Performances of the Fault Decoupling Device when unbalanced and multiple faults occur on distribution systems.
2005
Nowadays industrial processes are largely based on electronic devices such as programmable logic controllers and adjustable speed drives. Consequently, industrial equipments became less tolerant towards power supply disturbances. Voltage dips due to faults are surely among the worst disturbances for industrial equipments. A paper machine can be affected by disturbances of only 10% voltage drop lasting for 100 ms. A voltage dip of 75% (of the nominal voltage) with a duration shorter than 100 ms results in material loss in the range of thousands of US Dollars for semiconductors industry [1].
Dynamic optimization of a continuous Lactide ring-opening polymerization process
2019
An increasing attention has been paid to the production of the polylactic acid (PLA) in recent years, owing to its properties as a biodegradable thermoplastic besides the fact that it is derived from renewable resources. PLA is industrially produced by ring opening polymerization of lactide. This reaction is sensitive to deviations in the operating conditions that highly affect the reaction rate and the polymer properties. Therefore, a process monitoring and control policy is crucial in order to restore the nominal conditions in case of drift. In this paper, a continuous PLA process is considered with three cascade reactors, two tubular and one loop reactor, that is described by partial dif…
Specific protocol (SENSLOG) over TCP/IP for sensors applications
2005
The objective is to obtain an embedded system using a microcontroller that will communicate with other devices over a specific protocol (SENSLOG) over TCP/IP for sensors applications. The protocol has been designed for this application, but the commands are generic. They can be used for any type of sensing. We must take into account that this program will run in a microcontroller and it will communicate with another program running in a PC. The protocol is based on commands, like SMTP. From the PC we will send commands to the microcontroller to do specific tasks, and if it is necessary, the microcontroller will answer to the PC. Some of the functions designed for this protocol are: to contr…
BI-järjestelmän vaikutukset laskentainformaatioon ohjauksen ja päätöksenteon tukena
2017
Business intelligence (BI) eli liiketoimintatiedon hallinta on viime vuosina kasvattanut merkittävästi rooliaan päätöksenteon apuvälineenä. Tiedosta ja sen hallinnasta on muodostunut yrityksille kilpailukyvyn perusta. Suuren datamäärän jalostaminen ohjausta ja päätöksentekoa tukevaksi laadukkaaksi informaatioksi aiheuttaa monille yrityksille kuitenkin vielä haasteita. Tämän pro gradu -tutkielman tavoitteena on selvittää, miten BI-järjestelmä on vaikuttanut laskentainformaatioon ohjauksen ja päätöksenteon tukena. Aiempi business intelligenceen liittyvä tutkimus on hyvin teknologiapainotteista jättäen vähälle huomiolle BI-järjestelmän roolin laadukkaan informaation tuottamisessa ohjauksen ja …
"Är socialarbetaren i en jämlik dialog med de medikala experterna?" : en fallstudie av socialarbetarens skiftande roller på ett stadssjukhus och som …
2008
Ierīču barošanas kontrollera programmatūras izstrāde
2015
Barošanas kontrolleris ir autonoma sistēma, kas kontrolē pieslēgto ierīču, strāvas padevi un saglabā datus par ierīču stāvokli. Priekš paplašinātas funkcionalitātes ir paredzēts, ka lietotājs var savienot ierīces ar Barošanas kontrolleri caur Ethernet tīklu. Lietotājam tiek dotas 3 iespējas vadīt sistēmu: pieslēdzoties caur pārlūkprogrammu sistēmai un izmantojot tīmekļa pārlūka interfeisu, izmantojot mazākas funkcionalitātes skārienjūtīgo ekrānu, kas pieslēgts sistēmai, izmantojot tiešo pieeju pie ierīces kā piemēram: ssh, ftp utt, lai mainītu sistēmas noklusētos iestatījumus.
An Energy-Autonomous Wireless Sensor with Simultaneous Energy Harvesting and Ambient Light Sensing
2021
Wireless sensor nodes (WSNs) are generally powered by batteries, which results in a substantial limitation to the places where the nodes can be installed, to the maximum number of deployable devices, and to the node lifetime. To meet the demand for Internet-of-Things (IoT) applications that require a large number of maintenance-free, low cost, wireless sensor nodes, this paper proposes a wireless sensor platform with a single photovoltaic transducer that performs the dual role of harvesting energy and sensing ambient light. This dual use allows even smaller and cheaper nodes that do not require any form of supporting external power, with a reduced component count. The device implements off-…