Search results for "1700"
showing 10 items of 243 documents
Flow Control of Fluid in Pipelines Using PID Controller
2019
In this paper, a PID controller is utilized in order to control the flow rate of the heavy oil in pipelines by controlling the vibration in a motor pump. A torsional actuator is placed on the motor pump in order to control the vibration on a motor and consequently controlling the flow rates in pipelines. The necessary conditions for the asymptotic stability of the proposed controller are validated by implementing the Lyapunov stability theorem. The theoretical concepts are validated utilizing numerical simulations and analysis, which proves the effectiveness of the PID controller in the control of flow rates in pipelines.
Modeling and control of uncertain nonlinear systems
2018
A survey of the methodologies associated with the modeling and control of uncertain nonlinear systems has been given due importance in this paper. The basic criteria that highlights the work is relied on the various patterns of techniques incorporated for the solutions of fuzzy equations that corresponds to fuzzy controllability subject. The solutions which are generated by these equations are considered to be the controllers. Currently, numerical techniques have come out as superior techniques in order to solve these types of problems. The implementation of neural networks technique is contributed in the complex way of dealing the appropriate coefficients and solutions of the fuzzy systems.
Parallel distributed compensation for voltage controlled active magnetic bearing system using integral fuzzy model
2018
Parallel Distributed Compensation (PDC) for current-controlled Active Magnetic Bearing System (AMBS) has been quite effective in recent years. However, this method does not take into account the dynamics associated with the electromagnet. This limits the method to smaller scale applications where the electromagnet dynamics can be neglected. Voltage-controlled AMBS is used to overcome this limitation but this comes with serious challenges such as complex mathematical modelling and higher order system control. In this work, a PDC with integral part is proposed for position and input tracking control of voltage-controlled AMBS. PDC method is based on nonlinear Takagi-Sugeno (T-S) fuzzy model. …
Cent números: una nova etapa de Cuadernos de Geografía
2018
Creiximent de la població, mortalitat, natalitat i migracions a les comarques de Tarragona (1700-1860)
2018
Retrieving Monitoring and Accounting Information from Constrained Devices in Internet-of-Things Applications
2013
Part 6: Monitoring Mechanisms; International audience; Internet-of-Things (IoT) is envisioned to provide connectivity to a vast number of sensing or actuating devices with limited computational and communication capabilities. For the organizations that manage these constrained devices, the monitoring of each device’s operational status and performance level as well as the accounting of their resource usage are of great importance. However, monitoring and accounting support is lacking in today’s IoT platforms. Hence, this paper studies the applicability of the Constrained Application Protocol (CoAP), a lightweight transfer protocol under development by IETF, for efficiently retrieving monito…
Maaseutukäsityöläisten sosiaalinen asema ja keskinäinen hierarkia esimodernissa Suomessa
2018
Ajatuksella ja ahkeruudella kolmen suvun vaiheista neljältä vuosisadalta
2018
Kirja-arvio teoksesta Immonen, Perttu: Suomen rahvaan historia. Kolmen suvun elämää keskiajalta 1800-luvulle. Atena Kustannus Oy, 2017. 639 sivua. ISBN 978- 952-300-335-4. Perttu Immonen yhdistää teoksessaan mielenkiintoisesti ja elävästi mikro- ja makrohistorian varhaismodernin ajan Suomessa. Hän seuraa kronologisesti kolmen eri seutukunnan: LänsiSuomen Sastamalan, Itä-Suomen Rantasalmen ja Pohjanmaan Kokkolan tapahtumia. Poikkeuksellisen ankarien aikojen kuvauksesta muodostuu moniulotteinen ja alueiden erilaisia kohtaloita tarkasteleva analyysi. nonPeerReviewed
Geometry of Quadrangles in Almqvist’s The Queen’s Tiara
2018
Quadrangles are repeatedly used in construction of scenes in Swedish author C. J. L. Almqvist’s novel The Queen’s Tiara. They limit and frame views. Repeating these structures creates connections between scenes. They form in relations between characters. Several quadrangular structures form around one main character called Tintomara, when she involuntarily attracts characters that fall in love in her. Also, quadrangles inside and beside each other are visible in scenes. Almqvist presented these forms in the elementary geometry textbook he published a year before this novel. peerReviewed
Julma ja kiehtova itä : muslimit englanninkielisissä maantieteen teoksissa 1700-luvun jälkimmäisellä puoliskolla
2010
Eurooppa ja islam ovat olleet toistensa kanssa tekemisissä jo vuosisatojen ajan. Kanssakäyminen on ollut sekä vihamielistä, että rauhanomaista, mutta eurooppalaisten asenteita on aina värittänyt pelko kristinuskon vanhentuneena kieltänyttä itäistä naapuria kohtaan. Tässä työssä tarkastellaan Euroopassa 1700-luvun loppupuolella vallinnutta muslimikuvaa. Tutkimuksessa selvitetään, miten muslimeihin suhtauduttiin maallistuvassa yhteiskunnassa, millaisia representaatioita heistä rakennettiin, sekä eroteltiinko muslimikansallisuudet toisistaan, vai tarkasteltiinko heitä yhtenäisenä ryhmänä. Alkuperäislähteenä käytetään 1700-luvun jälkimmäisellä puoliskolla kirjoitettuja englanninkielisiä maantie…