a temperature control system
PLC communications in a process control system
... than one bit per baud Baseband and broadband The principle characteristics of base-band and broadband systems are listed in Table BASEBAND Digital signalling Entire bandwidth consumed By signal ... COMMUNICATIONS IN A PROCESS CONTROL SYSTEM by GR MacKenzie, AEG Communication has become a major part of any process control automation system Today PLC communication is as much for data acquisition ... performance, and is generally cheaper The maximum transmission time for any network configuration can be calculated A classic rule for any PLC application is that repeatability is more important than...
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Tài liệu PLC Communications in a Process Control System docx
... pair cable and standard connectors A few European PLC manufacturers immediately adopted this standard This Bit Bus, however, was also seen to have a major shortfall, in that it was based on a ... performance, and is generally cheaper The maximum transmission time for any network configuration can be calculated A classic rule for any PLC application is that repeatability is more important than ... and broadband systems are listed in Table BASEBAND Digital signalling Entire bandwidth consumed By signal Bi-directional Bus topology Distance up to a few kilometres BROADBAND Analog signalling...
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Development of DMC controllers for temperature control of a room deploying the displacement ventilation HVAC system
... [19] Hasnain, S.M., Alawaji, S.H., A1 -Ibrahim, A and Smiai, M.S (1999), Application of Thermal Energy Storage in Saudi Arabia International Journal of Energy Research, vol 23, pp 117-124 [20] Zaheer-uddin, ... was created to simulate the temperature of the exterior wall of the room This temperature curve simulated the exterior surface and was assumed to be at a constant value of 320K A 3-D Cartesian ... department of Mechanical Engineering and Materials Science at Washington University in St Louis, MO, USA He is a Fellow of ASME, AIAA, IEEE, and SAE E-mail address: rka@wustl.edu Huijun Gao received...
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Control systems design a new framework
... Cataloguing in Publication Data Control systems design : a new framework Automatic control I Zakian, Vladimir 629.8 ISBN 1852339136 Library of Congress Cataloging-in-Publication Data Control systems ... Fukushima University Kanayagawa 1, Fukushima, 960-1296 Japan e-mail: ishihara@educ.fukushima-u.ac.jp Paul Geoffrey Lane Federal Agricultural Research Centre (FAL) Institute for Technology and Biosystems ... but has been given various, somewhat arbitrary, mathematical interpretations, each leading to a separate branch of mainstream control theory and design Although sensitivity is a way of quantifying...
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Therapeutic ultrasound as a potential male contraceptive: power, frequency and temperature required to deplete rat testes of meiotic cells and epididymides of sperm determined using a commercially available system doc
... breeders served as untreated controls Sham-treated animals underwent all preparations for ultrasound treatment as treated animals: anesthesia was administered and maintained at - 2.5% isoflurane/oxygen, ... Methods Animals All animal work was approved by the Institutional Animal Care and Use Committee (IACUC) of Integrated Laboratory Systems (ILS, Research Triangle Park, North Carolina, USA) or by ... 5.0 d, GraphPad Software, San Diego California USA [6] If data failed Bartlett’s test for equal variances, significance was evaluated using the Kruskal-Wallis test and Dunn’s multiple comparison...
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Báo cáo khoa học: "Dialog Control in a Natural Language System" docx
... achieve a state (STATEX) In assumption 1, (STATEX) is in fact specialized for a consultation system as a real world state (instead of a mental state which is the general assumption in any dialog system) ... the proposal is (implicitly) anticipated, and that modifications of a want or of a proposal are not manageable In a more elaborated version, the goal accomplishment has to be marked as provisory ... drawn from a user want referring to a state, missing his/her acquaintance with the associated causal relation (pursuing a global goal) - 32 - (WANT SYSTEM (KNOW SYSTEM X FUTURE)NOW) A (BELIEVESYSTEM...
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ellis, g. (2002). observers in control systems - a practical guide
... parameter value such as is usually the case for mass, moment of inertia, thermal mass, capacitance, inductance, and many other physical parameters The inverse Live Constant is a space-saving alternative ... equipment damaged In addition to maintaining absolute stability, systems must maintain reasonable margins of stability For example, a temperature controller with low margins of stability may respond ... manufacturer, plant safety personnel, or local governmental officials such as the Occupational Health and Safety Administration Always operate control systems safely! Chapter Control Systems and the Role...
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ModelBased Design of a SUV antirollover control system
... configuration: Body slip rate = Measured yaw rate – Stable yaw Stable yaw = Lateral acceleration/Vehicle speed The body roll angle is estimated based on the transfer function relating the lateral acceleration ... constrained signals The tool applies optimization techniques that rapidly iterate over the parameter space of the PID gains to arrive at optimal values that will allow the controller to satisfy ... rates Some states of the vehicle are estimated based on available sensor data just as they would be in an actual vehicle controller The vehicle speed is estimated based on the averaged wheel speeds...
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Báo cáo y học: "Role of STAT4 polymorphisms in systemic lupus erythematosus in a Japanese population: a case-control association study of the STAT1-STAT4 region" pot
... Tsukahara S, Kawaguchi Y, Terai C, Hara M, Tomatsu T, Yamanaka H, Horiuchi T, Tao K, Yasutomo K, Hamada D, Yasui N, Inoue H, Itakura M, Okamoto H, Kamatani N, Momohara S: Association of STAT4 ... the TaqMan SNP Genotyping Assay (Applied Biosystems, Foster City, CA, USA), and association was examined in 308 SLE patients and 306 healthy individuals Statistical analysis Association of each ... regression analysis was performed under the additive model for the minor allele Assuming a polymorphic site with two alleles A and a, genotypes were encoded as = aa, = Aa, and = AA Population attributable...
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Báo cáo y học: "Replication of recently identified systemic lupus erythematosus genetic associations: a case–control study" pps
... Kobayashi S, Ikari K, Kaneko H, Kochi Y, Yamamoto K, Shimane K, Nakamura Y, Toyama Y, Mochizuki T, Tsukahara S, Kawaguchi Y, Terai C, Hara M, Tomatsu T, Yamanaka H, Horiuchi T, Tao K, Yasutomo ... JA: Statistical false positive or true disease pathway? Nat Genet 2006, 38:731-733 Minegishi Y, Saito M, Morio T, Watanabe K, Agematsu K, Tsuchiya S, Takada H, Hara T, Kawamura N, Ariga T, Kaneko ... Yasutomo K, Hamada D, Yasui N, Inoue H, Itakura M, Okamoto H, Kamatani N, Momohara S: Association of STAT4 with susceptibility to rheumatoid arthritis and systemic lupus erythematosus in the Japanese...
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báo cáo khoa học: " The association of aggressive and chronic periodontitis with systemic manifestations and dental anomalies in a jordanian population: a case control study" pdf
... distolingual/palatal) Inter-examiner reliability was calculated using alpha statistics with regard to probing depth and CAL on 16 quadrants Diagnosis of CP and AP was based on CAL values and confirmed radiographically ... http://www.head-face-med.com/content/6/1/30 Page of Table HAD Scale for Anxiety and Depression among the study population Variables CP AP Controls Table Dental Anomalies in CP and AP Dental Anomaly Site CP AP Controls No (% )a P values ... any of the control subjects (Table 4) All cases of dens invaginatus were observed uni- and bilaterally on the maxillary lateral incisors and were clinically and radiographically type I All cases...
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Báo cáo y học: " Membrane diffusion- and capillary blood volume measurements are not useful as screening tools for pulmonary arterial hypertension in systemic sclerosis: a case control study" pptx
... Statistical analysis SPSS 12.0 software package (Chicago, IL) was used for statistical analyses, and p < 0.05 was considered statistically significant Normal distribution was evaluated by Shapiro-Wilkinson's ... by a ratio less than 1[21] Analysis of hemodynamic parameters Pulmonary capillary wedge pressure (PCWP) was measured in order to exclude left sided heart disease and calculate pulmonary vascular ... manuscript JWLP acquisition of data, interpreted the data AVN designed the manuscript, analysis and interpretation of data, draft of manuscript MDS analysed the data, helped drafting the manuscript;...
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Báo cáo y học: "TLR7 single-nucleotide polymorphisms in the 3’ untranslated region and intron 2 independently contribute to systemic lupus erythematosus in Japanese women: a case-control association study" ppsx
... and have opposing inflammatory and regulatory roles in a murine model of lupus Immunity 2006, 25:417-428 Komatsuda A, Wakui H, Iwamoto K, Ozawa M, Togashi M, Masai R, Maki N, Hatakeyama T, Sawada ... Human Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba 305-8575, Japan Department of Rheumatology, Clinical Research Center for Allergy and Rheumatology, Sagamihara National Hospital, National ... National Hospital Organization, 18-1 Sakuradai, Minami-ku, Sagamihara 252-0392, Japan 3Division of Clinical Immunology, Doctoral Program in Clinical Sciences, Graduate School of Comprehensive Human...
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a survey on marine control systems
... (theoretical data) and sensors to collect actual data The system compares actual data with the theoretical data and thus detects any In order to estimate hydrodynamic coefficients of a vehicle there are ... control many onboard systems The networked control systems have data communication buses such as NEMA, CANOpen, and Profibus Fig 13 shows a networked control system with NAMA data communication ... Springer, 2006 Appendix Nonlinear Mathematical Models of Marine Vehicles for Control Design and Simulation Nonlinear mathematical models for design and analysis of marine control systems are as follows:...
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A Comprehensive Analysis of Chattering in Second Order Sliding Mode Control Systems
... K.K.: Approximate Methods of Variable Structure Systems Analysis Nauka, Moscow (1974) (in Russian) 38 Zolezzi, T.: A variational approach to second-order approximability of sliding mode control system ... Fridman, L.: An averaging approach to chattering IEEE Trans Aut Contr 46, 1260–1264 (2001) 18 Fridman, L.: Singularly Perturbed Analysis of Chattering in Relay Control Systems IEEE Trans Aut Contr ... loop This approach is approximate and requires the linearized system (actuator and plant) being a low-pass filter This assumption is equivalent to the hypothesis of the actuator being fast Thus,...
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Modeling of precision motion control systems a relay feedback approach
... for Control Valves A control valve is a device that starts, stops or regulates the flow of a fluid by adjusting the position of a movable part A control valve requires an actuator that is capable ... can be generally categorized into feedforward control and feedback control Feedforward control Feedforward is a term describing an element or pathway within a control system which passes a controlling ... ways The relay feedback approach, for its simplicity and light-computational load, is a good candidate However, due to dissimilarity of linear and nonlinear systems, there are still great challenges...
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A filter based approach for stochastic performance monitoring of feedback control systems
... Lalitha, Suresh, Raj, Biswajit, Shanthi, Ravi, Ashwin, Khare, Anju, Atreyyee, Pavan, Naveen, Manish, Manoj, Bhupendra, Vipul, Nirantar, Saurabh, Rahul, Sudhakar, Srinivas, Reddy and many more I like ... determine PI achievable performance calculation using known open loop process model and routine data Later, Agrawal and Lakshminarayanan (2003) proposed a method to obtain PI achievable performance using ... designs based on steady state aspects alone may result in a plant with unfavorable static and dynamic characteristics These plants may be poorly controllable or even uncontrollable Further, dead time...
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Optimal Tracking with Sway Suppression Control for a Gantry Crane System
... proposed 632 M .A Ahmad, R.M.T Raja Ismail, M.S Ramli, N.M Abdul Ghani and M .A Zawawi control schemes, initially a LQR controller is developed for cart position control of gantry crane system This ... M .A Ahmad, R.M.T Raja Ismail, M.S Ramli, N.M Abdul Ghani and M .A Zawawi Figure 5: Response of the gantry crane with erroneous natural frequencies (a) : Cart trajectory LQR-ZV Shaper LQR-ZVDD Shaper ... Implementation and Result In this investigation, hybrid control schemes for tracking capability and sway angle suppression of the gantry crane system are examined Initially, a Linear Quadratic Regulator...
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Fuzzy Control of a Gantry Crane System
... “Fuzzy control of an overhead crane performance comparison with classic control , Control Engineering Practice, Vol.3, No.12, 1995, pp.1687-1696 J Yi, Naoyoshi Yubazaki, and Kaoru Hirota, “Anti-swing ... Proposal for Control Theory – Master of Science in Information Technology Fall 2004, Control Laboratory, Aalborg University Esbjerg • • Modeling and Matlab/Simulink simulation Experimental tests ... fuzzification A/ D Fig A framework of a Fuzzy Control System References (can be available upon requirement) • • • DE-6 Gourp 672 (Spring 2004) report: Control of the Crane Project 2004 A Benhidjeb and G.L...
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Effects of ph and temperature on simultaneous nitritation, anammox and denitrification in a wetland treatment system receiving dairy wastewater
... chemical adjustments such as NaOH or HCl are not adaptable Tao and Wang (2009) applied limestone in surface-flow constructed wetland as a natural source of alkalinity for anammox bacteria and pH ... pharmaceutical, fertilizer and food manufacturing, leachates produced by urban solid waste disposal sites, or animal feeding operations As a result, large quantities of wastewater containing ammonia are ... ammonium Nitrate as a pollutant can affect human health (Kim-Shapiro et al., 2005) and can also be toxic to aquatic organism (Romano et al., 2007) Moreover, substantial experiments showed that...
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