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Ananthi, S.
- Model Predictive Control for Nonlinear Systems in State Space using Fuzzy System Model
Authors
1 Department of Network Systems and Information Technology, University of Madras, Chennai, IN
2 Instrumentation Department, University of Madras, IN
Source
Journal of Applied Information Science, Vol 2, No 2 (2014), Pagination: 1-13Abstract
Model predictive (MPC) is a common method used in chemical process industries. Usually, the state space method is applicable for linear systems with a quadratic performance index to find the optimised control law based on a solution of the Riccatti equation. However, a nonlinear system can only be modeled by a fuzzy logic based function of the variables. The method of optimal control requires a performance index to be met, which is not necessarily a quadratic type of index but a nonlinear function of the process variables. It could be similarly modeled by another fuzzy inference system. The MPC method for such a fuzzy modeled state space system would be able to provide good predictive control for any nonlinear control system. The evaluation of the control steps by prediction for such a fuzzy model with fuzzy performance index is described in this paper. The optimal control steps are found by iterative search using the Box's Complex search method over a range of control values. Then, the prediction outputs are checked for constraint inequality satisfaction, such as pressure limit for example. Such a control step is applied at the current time step. The paper describes such a technique for a nonlinear process with a nonlinear performance index, also with constraints in the process variables.Keywords
Fuzzy Control System, Control Law Optimisation, Model Predictive Control, Model Predictive Control.
- Storage Characteristics of Fish Sauce Prepared from Silver Bellies (Leiognathus spp) Using Plant Enzyme
Authors
1 Department of Fish Processing Technology, Fisheries College and Research Institute, Tamil Nadu Veterinary and Animal Sciences University, Thoothukudi - 628 008, IN
Source
The Indian Journal of Nutrition and Dietetics, Vol 45, No 9 (2008), Pagination: 366-370Abstract
The annual marine fish production in India is increased from 2.83 million tonnes in 1998-1999 to 612641 tonnes in 2006-2007. Apart from the increase in the production of commercially important fishes, there has been considerable increase in the by catch also. The low value by catch landed along the Indian coast was contributed mainly by juvenile sciaenid, silver bellies, thread fin bream etc.- Wearable Computing-Women Become Warriors by Wearing This Watch
Authors
1 Department of ECE, SVS College of Engineering, Coimbatore-642109, IN
2 Department of ECE, SVS College of Engineering, Coimbatore-642109, IN
Source
Biometrics and Bioinformatics, Vol 7, No 3 (2015), Pagination: 87-89Abstract
Today in the current global scenario, the prime question in every girl’s mind, taking into account the ever rising increase of issues on women harassment in recent past, is only about her safety and security. The only thought haunting every girl is when they will be able to move freely on the streets even in odd hours without worrying about their security. This paper suggests a new perspective to use technology to protect women. The system resembles a normal WATCH which when activated, tracks the location of the victim using GPS (Global Positioning System) and sends emergency messages using GSM (Global System for Mobile Communication), to contacts and the police control room. The system also incorporates a screaming alarm that uses real-time clock, to call out for help. The main advantage of this system is that the user does not require a Smartphone unlike other applications that have been developed earlier. The use of sophisticated components ensures accuracy and makes it reliable. The WATCH provides with all the features which will leave no stone unturned to help the victim in any kind of emergency situations.
- Glycine Max Seed Mediated Synthesis and Characterization of Zinc Oxide Nanoparticles and its Antifungal Activity Against Pathogenic Fungal Strains
Authors
1 Associate Professor, PG Department of Biochemistry, Theivanai Ammal College for Women (Autonomous), Villupuram – 605401, TN, IN
2 Associate Professor, Department of Pharmacology, Saveetha Dental College and Hospitals, SIMATS, Chennai - 600077, TN, IN
Source
Indian Journal of Public Health Research & Development, Vol 10, No 11 (2019), Pagination: 3628-3634Abstract
Background: Among the metal nanoparticles Zinc oxide nanoparticles have more applications in many areas, including biomedical, materials science, and environmental technology. Soybean is one of the important commercial crops due to the presence of protein, oil, carbohydrates, minerals, saponins and isoflavonoids such as genistein and daidzein.
Materials and Merhod: In this present study we synthesis the Zinc oxide nanoparticles by using glycine max seed extract. We examine the size and morphology of synthesized Zinc oxide nanoparticles by using UV-visSpectrophotometer, X-ray Diffraction (XRD).
Results: Herein, the Zinc oxide nanoparticles were synthesized by using seed extracts of glycine max with in 6h and the size of the Zinc oxide nanoparticles ranges from 70-90 and predominantly spherical shapes with crystalline nature. Elemental analysis of Zinc oxide nanoparticles was characterized by EDX.
Conclusion: The synthesized Zinc oxide nanoparticles from glycine max exhibit excellent antimicrobial activity against different clinically isolated fungi such as Aspergillus flavis, Aspergillus niger, Candida albicans, and Fusarium sp.
Keywords
Zinc Oxide Nanoparticles, Green Synthesis, Antifungal, Microscopy,- Sensitivity Analysis of Micro-Structured Dielectric Layer of Capacitive Pressure Sensors for Flexible Electronics Applications
Authors
1 Department of Electronics and Communication Engineering, Manipal University Jaipur, Jaipur., IN
2 FlexMEMS Research Centre, Department of Electronics and Communication Engineering, Manipal University Jaipur,India., IN
Source
Journal of Mines, Metals and Fuels, Vol 71, No 4 (2023), Pagination: 529-533Abstract
Micro-structuring the surface of the dielectric medium that is sandwiched between the two electrodes of the capacitive pressure sensor (CPS), increases the sensitivity of the sensor compared to, without the microstructure. A thorough analysis of CPS output sensitivity, linearity and relative change in its capacitance are done by introducing micro-structure in the dielectric layer. The designed micro-pyramidal structure on the surface of PDMS dielectric layer shows good linearity over the simulated range of 0-50 k Pa and with a nonlinearity error of 1%. Different types of microstructures are designed and their performance is studied first. The simulated result also compared to dielectric layer without any micro-structure and with vacuum as dielectric layer. Further analysis done by selecting the micro-pyramidal structure and varying its base length and the inter space between the micro-structure. The designed model with surface area=400sq.µm and distance=20µm and pyramidal micro-structure gives 51.4 times increase in sensitivity when compared to the same model without any micro-structure.Keywords
Micro-Structure, Dielectric, Flexible, Performance, Simulation.References
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- https://www.comsol.co.in/model/capacitive-pressure-sensor-476