A B C D E F G H I J K L M N O P Q R S T U V W X Y Z All
Saravanakumar, G.
- MAC Protocols for Wireless Sensor Networks
Authors
1 Department of ECE, Dr. M. G. R. Educational and Research Institute University, Chennai - 600095, Tamil Nadu, IN
2 Department of ECE, Vel Tech High Tech Dr. Rangarajan Dr. Sakunthala Engineering College, Chennai - 600062, Tamil Nadu, IN
Source
Indian Journal of Science and Technology, Vol 8, No 34 (2015), Pagination:Abstract
Background/Objectives: Wireless sensor network are the collection of individual nodes which are able to interact with physical environment statically or dynamically by sensing or controlling physical parameter. The design of an energyefficient Medium Access efficient Control (MAC) protocol is one of the major issues in Wireless Sensor Networks (WSN). Most of these protocols take into account the energy efficiency as a main objective. There is much more innovative work should be done at the MAC layer to address the hard unsolved problems. Methods/Statistical Analysis: Wireless sensor network become a prominent in many applications like habitat, infrastructure and industrial automation. In this paper, we first outline and discuss the specific requirements and design trade-offs of a typical wireless sensor MAC protocol by describing the properties of WSN that affect the design of MAC layer protocols. Then, a typical collection of wireless sensor MAC protocols presented in the literature are surveyed, classified, and described emphasizing their advantages and disadvantages whenever possible. Findings: In this paper we study some characteristics of WSN that are important for the design of MAC layer protocols and give a brief introduction of some MAC protocols with reference to energy efficiency for WSN. In accordance with channel access policies, MAC protocols are classified into four types, which are cross layer protocols, TDMA-based, contention-based and hybrid. For the collection of recent wireless sensor real-time MAC protocols emphasizing their advantages and disadvantages whenever possible. One of the major constraints in Wireless Sensor Networks (WSNs) is power consumption. In recent years, a lot of efforts have been put into the design of Medium Access Control (MAC) protocols for WSN, in order to reduce energy consumption and enhance the network’s lifetime. Application/ Improvement: MAC protocol plays an important role in WSN energy performance and give result that there is no standard protocol which give better energy efficiency and enhances further research to design and develop application dependent and for usages.Keywords
Energy Efficiency, Medium Access Control Protocol, Wireless Sensor NetworksFull Text
- Determination of Damping Coefficient of a Bump Foil Squeeze Film Damper
Authors
1 Dept. of Mech. Engg., BMS College of Engg., Bangalore, IN
2 Dept. of Mech. Engg., Dr. Ambedkar Institute of Technology, Bangalore, IN
Source
International Journal of Vehicle Structures and Systems, Vol 8, No 4 (2016), Pagination:Abstract
The present investigation is aiming to get better squeeze film dampers which are normally used in high speed jet engines to minimize small amplitude large force vibrations. The investigation was started with squeeze film dampers employing conventional lubricating oils. Magneto rheological fluids are then used to enhance the viscosity characteristics of the fluid under the influence of magnetic fields in order to improve the damper performances. It is observed that the dynamic characteristics of the damper with magneto rheological fluids are enhanced. Further to improve the damper performance, few modifications in the damper assembly are carried out in this research work. A good amount of reduction in the amplitude of vibrations is observed in these modified squeeze film dampers coupled with magneto rheological fluids. This research work discusses dual and triple clearance squeeze film dampers and bump foil squeeze film damper, also subjected to variation in temperature. Dynamic characteristics are found to be decreasing as the viscosity of the fluid decreases with rise in temperature of the fluid.Keywords
Bump Foil Squeeze Film Damper, Magneto Rheological Fluids, Temperature Effect, Damping Coefficients, Shims.Full Text
- IMC Based Controller Design Non-Linear Conical Tank System
Authors
1 Department of Instrumentation and Control Engineering, Tamilnadu College of Engineering, Coimbatore, IN
2 Department of Instrumentation and Control Engineering, Tamilnadu College of Engineering, Coimbatore, IN
Source
Artificial Intelligent Systems and Machine Learning, Vol 9, No 6 (2017), Pagination: 115-119Abstract
The aim of this paper is to implement optimum controller for a conical tank. The objective of the controller is to maintain the level inside the process tank in a desired value. Hence an attempt is made in this paper as Internal Model Based PID controller design for conical tank level control. For each stable operating point, a first order process model was identified using process reaction curve method. The real time implementation is done in simulink using MATLAB. The experimental results shows that proposed control scheme have good set point tracking and disturbance rejection capability.
Keywords
Mathematical Model, PID Controller, IMC, MATLAB Simulink.
References
- Rajesh.T, Arun jayakar.S, Siddharth.S.G,” Design and Implementation Of IMC Based PIDController for Conical Tank Level ControlProcess in international journal of innovative research in electrical, electronics, instrumentation and control engineering in sep2014
- Sukanya R. Warier, SivanandamVenkatesh “design of controller based on mpc for a conical tank system” IEEE International Conference on Advances In Engineering, Science and Management (ICAESM - 2012) March30, 31, 2012.
- Korkmaz, M. Aydogdu, O. Dogan, H.Design and performance comparison of variable parameter nonlinear PID controller and genetic algorithm based PID controller Innovations in Intelligent Systems and Applications (INISTA), 2012 International Symposium on Digital Object Identifier:
- S.Nithya, N.Sivakumaran, T.K.Radhakrishnan and N.Anantharaman ”soft Computing Based Controllers Implementation for Non-linear Process in Real Time” Proceedings of the World Congress on Engineering and Computer Science(WCECS )2010,Vol – 2.
- Implementation of Optimised Power Sharing during Heavy Demands Energy Recording Cum Control System
Authors
1 Department of Electrical & Electronics Engineering, Tamilnadu College of Engineering, Coimbatore, Tamil Nadu, IN
Source
Networking and Communication Engineering, Vol 10, No 2 (2018), Pagination: 31-39Abstract
In our project entitled with "IMPLEMENTATION OF OPTIMISED POWER SHARING DURING HEAVY DEMANDS ENERGY RECORDING CUM CONTROL SYSTEM" we have planned to provide a solution for power cuts during heavy demand in summer season. Since Electricity becomes a basic need of a human life nowadays. So we Engineers, decided to address this problem in a efficient way by using wireless technologies in conjunction with Embedded system. In addition to the above solution, we also record the energy consumption during our daily usage. This system consists of 2 units, namely 1. EB Office unit. 2. Residential unit. The former consist of Microcontroller, Computer, Level converter, RF Transmitter, Receiver and other associated circuits. The Later consists of Microcontroller, LCD module, Buffer, Driver, Relay array, Buzzer, Current transformer, ADC, Signal conditioning unit, RF transmitter and receiver circuits. The information related to power limiting will be sent from the computer at a pre defined interval to the respective area. Based on this information, system will verify the data and activate the load accordingly as 25%- 100%. The RF communication is limited to 10m to avoid interference to other regular service band. If required, GSM communication can be used instead of RF communication. The system will be developed using ATMEL AT89S52 controller using assembly language which is having program memory of 8K bytes. The PC has a Visual Basic interface program which will interact with microcontrollers through RS232 communication protocol. The RF Module frequency is 433MHz. The Buffer and driver circuits are designed to deliver the power required for the relay.
Keywords
Distributed Generation, Flexible, Reliable and Intelligent Energy Delivery System (FRIENDS), Uninterruptible Power Supply.References
- T. Ichikawa and C. Rhatanz, “Recent trend in distributed generation technology, grid integration, system operations,” in Proc. 14th Power System Computation Conf., Survey Paper 1, Jun. 2002.
- N. G. Hingorani, “Introducing CUSTOM POWER,” IEEE Spectr., vol. 32, no. 6, pp. 41–48, Jun. 1995.
- H. Kobayashi and M. Takasaki, “Demonstration study of autonomous demand area power system,” in Proc. 2005/2006 IEEE PES Transmission and Distribution Conf. Exhib., May 2006, pp. 548–555.
- K. Nara and J. Hasegawa, “A new flexible, reliable and intelligent electric energy delivery system,” Trans. Elect. Eng. Jpn., vol. 121, no. 1, pp. 26–34, Jan. 1997.
- K. Nara, J. Hasegawa, T. Oyama, K. Tsuji, and T. Ise, “FRIENDS: Forwarding to future power delivery system,” in Proc. 9th Int. Conf. Harmonics and Quality of Power, Oct. 2000, vol. 1, pp. 8–18.
- R. Hara, H. Kita, E. Tanaka, and J. Hasegawa, “Emergency operation based on multi agent technology in FRIENDS,” in Proc. 14th Power System Computation Conf., Session 3, Paper 4, Jun. 2002.
- J. A. P. Lopes, C. L. Moreira, and A. G. Madureira, “Defining control strategies for analyzing microgrids islanded operation,” in Proc. 2005 IEEE Russia Power Tech, Jun. 2005.
- J. M. Guerrero, J. Matas, L. Garcia de Vicuna, M. Castilla, and J. Miret, “Wireless-control strategy for parallel operation of distributed-generation inverters,” IEEE Trans. Ind. Electron., vol. 53, no. 5, pp. 1461–1470, Oct. 2006.
- C. K. Sao and P. W. Lehn, “Control and power management of converter fed microgrids,” IEEE Trans. Power Syst., vol. 23, no. 3, pp. 1088–1098, Aug. 2008.
- J. A. P. Lopes, C. L. Moreira, and A. G. Madureira, “Defining control strategies for MicroGrids islanded operation,” IEEE Trans. Power Syst., vol. 21, no. 2, pp. 916–924, May 2006.
- P.-T. Cheng, C.-A. Chen, T.-L. Lee, and S.-Y. Kuo, “A cooperative imbalance compensation method for distributed-generation interface converters,” IEEE Trans. Ind. Appl., vol. 45, no. 2, pp. 805–815, Mar2009.
- Design of Fractional Order PID Controller for Integrating Time Delay Systems
Authors
1 Department of Instrumentation and Control Engineering, Tamilnadu College of Engineering, Karumathampatti, Coimbatore-641549, Tamilnadu, IN
Source
Digital Signal Processing, Vol 10, No 3 (2018), Pagination: 40-44Abstract
The paper focuses on the design of fractional-order PID controller used to control process with Integrating & Time delay system. The cascaded Fractional-Order Proportional Integral (FOPI) controller and Fractional-Order Proportional Derivative (FOPD) controller is used to meet the design specifications such as phase margin, gain crossover frequency and flat phase constraints. The proposed controller structure is more comprehensive and simple and can be effortlessly implemented on hardware like Microcontroller, PLC etc. The mission of designing and optimization of controller is carried out in FOMCON (Fractional-order Modeling and Control) toolbox using MATLAB. Further, the effectiveness of the proposed fractional-order controller is compared with Classical PID controller tuned using Ziegler Nichol’s Method. The proposed FOPI-PD controller obtained gave better performance than existing Classical PID controller with same permanent values.
Keywords
PI (Proportional Integral), PD-(Proportional Derivative), FOMCON, Nelder Mead Optimization Technique.References
- Bhase, S.S., Lengare.M.J, Patre, B.M. (2015),"Tuning of robust FO[PI] plus fractional lead controller for integrating time-delay systems", International Journal of Automation and Control, Vol.9, No.3, Pp.247 - 260.
- Igor Podlubny,"Fractional-Order Systems and P I D Controllers", IEEE Transactions on Automatic Control, Vol. 44,No. 1, January 1999.
- A. Tepljakov, E. Petlenkov, J. Belikov, and M. Halas,"Design and implementation of fractional-order PID controllers for a fluid tank system", Proceeding 2013 American Control Conference (ACC), Washington DC, USA, June 2013, pp. 17801785.
- Varsha Bhambhani, YangQuan Chen and Dingyu Xue,"Optimal Fractional Order Proportional Integral Controller for Varying Time-Delay Systems",Proceedings of the 17th World Congress The International Federation of Automatic Control Seoul, Korea, July 6-11, 2008.
- FOMCON toolbox Tutorial
- Nelder Method
- Channel Modelling and Performance Characterization of Underwater Visible Light Communication
Authors
1 Department of Electrical and Electronics Engineering, Tamilnadu College of Engineering, Karumathampatti, Coimbatore-641659, Tamilnadu, IN
Source
Digital Image Processing, Vol 11, No 3 (2019), Pagination: 54-57Abstract
Now a days, Data transmission without using any network is very tedious job to do. In our project, data and audio is transmitted and received through visible lights and control the devices. The data is generated by microcontroller (tx) then transmitted through LED, these data can be received by photo detector and displayed on microcontroller. It is an advanced technology and the accuracy is more. Here, data communication, controlling the devices and as well as transmission of audio through visible light is achieved. Now a day, Wi-Fi is commonly used technology but the radiations are hazardous for human health so Li-Fi is the one which eliminated the wireless technology like Wi-Fi and transmits the data by using light. The security of transmitting the data is more compare to other technology. In industries, for file transmission and data transmission this technology is very useful because without using any networks one can easily transmit the data through existing light. It is user friendly and is cost effective. This technology is also used to control the devices like bulb, fan etc through visible light so that we can avoid the wastage of electricity. The data rate in this technology is faster than 10Mbps.
References
- Z. Zeng, S. Fu, H. Zhang, y. Dong, and J. Cheng, “A survey of underwater optical wireless communications,” IEEE Commun. Surveys Tuts, vol. 19, no. 1, pp. 204-238, Mar.2017.
- M. Kong, W. Lv, T. Ali, R. Sarwar, C. Yu, Y. Qiu, F. Qu, Z. Xu, J. Han, and J. Xu, “10-m 9.51-Gb/s RGB laser diodes-based WDM underwater Wireless optical communication,” Opt. Express, vol. 25, no. 17, pp.20 829- 20 834, Aug. 2017
- Sonardyne Corporation, “Bluecomn underwater optical communication,” https://www.sonardyne.com/app/uploads/2016/06/BlueComn.pdf, March 6, 2018.
- F. Miramirkhani and M. Uysal, “Visible light communication channel modelling for underwater environments with blocking and shadowing,” IEEE Access, vol. 6, no. 1, pp. 1082-1090, Dec. 2017.
- Regenerative Braking in Electric Vehicle Using By-Wire Braking System
Authors
1 Department of Electrical and Electronics Engineering, Tamilnadu College of Engineering, Karumathampatti, Coimbatore-641659, Tamilnadu, IN
Source
Biometrics and Bioinformatics, Vol 11, No 2 (2019), Pagination: 27-29Abstract
Electric vehicles are the future modes of transport replacing all other fuel consuming vehicles. Vehicles running on fossil fuels are one the reasons of global pollution as it causes adverse effects on environment. Electric vehicles are more eco-friendly, since the electric vehicles have zero emissions. The project aims to imply regenerative braking system in an electric vehicle with the help of by-wire brake system. Regenerative braking system is able to recover potential energy and kinetic energy and store it to a battery during braking, is said to be special system for electric vehicles. Regenerative braking system is normally replacing conventional frictional braking system to stop the electric vehicle. Brake by-wire technology is used to control the brakes of the vehicle through electrical means using sensors and actuators. It makes the braking force modulation more flexible. Brake pedal is decoupled from the hydraulic brakes using brake by-wire system. A regenerative braking implemented in an electric vehicle with brake-by-wire system is researched in this paper with the aspects of efficiency of regeneration and performance of the braking.
References
- Zhou Zhou and Miaohua Huang “Regenerative braking algorithm for electrical vehicle with a seamless two-speed transmission”, Proceedings of Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 2018; 226(10): I-12.
- Gaurav.A.Chandak, A.A.Bhole “A Review on Regenerative braking in Electric Vehicle” IEEE International Conference on Innovations in Power and Advanced Computing Technologies i-PACT 2017.
- Zhang, J.Z., Lv, C., Gou, J.F. and Kong, D.C., “Cooperative control of regenerative braking and hydraulic braking of an electrified passenger car”, Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 2012; 226(10): 11289-1302.
- Zhang, J.Z., Kong, D.C., Lv, C., Chen, X., “Optimization of control strategy for regenerative braking of electrified bus equipped with ABS”, Proceedings of the Institute of Mechanical Engineers, Part D: Journal of Automobile Engineering 2012; 226(4): 494-506.
- Ohtani, Y., Innami, T., Obata, T., Yamaguchi, T. et al., “Development of an Electrically-Driven Intelligent Brake Unit”, SAE Technical Paper 2011-01-0572, 2011, doi: 10.4271/2011-01-0572.
- Roberts, M. and Chhaya, T., “An Approach to the Safety Design and Development of a Brake-by-wire control System”, SAE Technical paper 2011-01-0212, 2011, doi: 10.4271/2011-01-0212.
- Zhang, J.Z., Chen, X., Zhang, P.J., “Integrated control of braking energy regeneration and pneumatic anti-lock braking”, Proceedings of the institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 2011; 224(5): 587-610
- Sundar, M. and Plunkett, D., “Brake-by-wire, Motivation and engineering- GM Sequel,” SAE Technical Paper 2006-01-3194, 2006, doi: 10.4271/2006-01-3194.
- Nakamura, E., Soga, M., Sakai, A., Otomo, A. et al., “Development of Electronically Controlled Brake System for Hybrid Vehicle”, SAE Technical Paper 2002-01-0300, 2002, doi: 10.4271/2002-01-0300.
- GAO, Y. and Ehsani, M., “Electronic braking system of EV and HEV--Integration of Regenerative Braking, Automatic Braking Force Control and ABS”, SAE Technical paper 2001-01-2478, doi: 10.4271/2001-01-2478.
- GAO, Y., Chen, L., and Ehsani. M., “Investigation of the Effectiveness of Regenerative Braking for EV and HEV”, SAE Technical Paper 1999-01-2910, 1999, doi:10.4271/1999-01-2910.
- Jonner, W., Winner, H., Dreilich, L., and Schunck, E., “Electrohydraulic brake system- The First Approach to Brake –By-Wire Technology”, SAE Technical Paper 960991, 1996, di:10.4271/960991.