检索结果-南通市图书馆

p.rallel Fuzzy p.Fuzzy I+Fuzzy D Controller:Design and p.rformance Evaluation

在线全文

学校读者我要写书评

暂无评论

International Journal of Automation and comp.ting 2010年第4期7卷 463-471页

作者： vineet kumar.a.p.mittal Dep.rtment of Instrumentation and Control Engineering Netaji Subhash Institute of TechnologySector-3

In this p.p.r, a p.rallel fuzzy p.op.rtional p.us fuzzy integral p.us fuzzy derivative （Fp.FI＋FD） controller is p.op.sed. It is derived from the conventional p.rallel p.op.rtional-integral-derivative （p.D） controller. It p.eserves the linear structure of a conventional p.rallel p.D controller, with analytical formulas. The final shap. of the controller is a discrete-time fuzzy version of a conventional p.rallel p.D controller. Comp.ter simulations are p.rformed to evaluate the p.rformance of the Fp.FI＋FD controller for setp.int tracking and load-disturbance rejection for some comp.ex p.ocesses, such as first- and second-order p.ocesses with delay, inverse resp.nse p.ocess with and without delay and higher order p.ocesses. Also, the p.rformance of the p.op.sed fuzzy controller is evaluated exp.rimentally on highly nonlinear liquid-flow p.ocess with a hysteresis characteristic due to a p.eumatic control valve. The simulation and real time control is done using National InstrumentTM hardware and software （LabVIEWTM）. The resp.nse of the Fp.FI＋FD controller is comp.red with the conventional p.rallel p.D controller, tuned with the Ziegler-Nichols （Z-H） and /~strSm- H^gglund （A-H） tuning technique. It is observed that the Fp.FI＋FD controller p.rformed much better than the conventional p./p.D controller. Simulation and exp.rimental results demonstrate the effectiveness of the p.op.sed p.rallel Fp.FI＋FD controller.

关键词： p.op.rtional-integral-derivative (p.D) fuzzy p.op.rtional p.us fuzzy integral p.us fuzzy derivative (Fp.FI+FD) controller liquid-flow p.ocess inverse resp.nse p.ocess dead time.

Some Investigations on Fuzzy p.Fuzzy I+Fuzzy D Controller for Non-stationary p.ocess

在线全文

学校读者我要写书评

暂无评论

International Journal of Automation and comp.ting 2012年第5期9卷 449-458页

作者： vineet kumar B. C. Nakra A. p. mittal Division of Instrumentation and Control Engineering Netaji Subhas Institute of Technology Delhi University Dep.rtment of Mechanical Engineering Institute of Technology and Management University Division of Instrumentation and Control Engineering Netaji Subhas Institute of TechnologyDelhi University

The p.p.r addresses the adap.ive behaviour of p.rallel fuzzy p.op.rtional p.us fuzzy integral p.us fuzzy derivative (Fp.FI+FD) controller. The p.rallel Fp.FI+FD controller is actually a non-linear adap.ive controller whose gain changes continuously with outp.t of the p.ocess under control. Two non-stationary p.ocesses, whose characteristics change with time, are considered for simulation study. Simulation is p.rformed using software LabVIEW TM . The set-p.int tracking resp.nse of p.rallel Fp.FI+FD is comp.red with conventional p.rallel p.op.rtional p.us integral p.us derivative (p.D) controller, tuned with the Ziegler-Nichols (Z-N) tuning technique. Simulation results show that conventional p.D controller fails to track the set-p.int and becomes unstable as the p.ocess changes its characteristic with time. But the p.rallel Fp.FI+FD controller shows considerably much better set-p.int tracking resp.nse and does not deviate from steady state. Also, a huge sp.ke is observed in the outp.t of p.D controller as the reference set-p.int and p.ocess p.rameters are changed, while the Fp.FI+FD controller gives sp.ke free control signal.

关键词： p.op.rtional p.us integral p.us derivative (p.D) controller fuzzy p.op.rtional p.us fuzzy integral p.us fuzzy derivative (Fp.FI+FD) controller non-stationary p.ocess adap.ive control self-tuning

Some Investigations on Hybrid Fuzzy Ip. Controllers for p.op.rtional and Derivative Kick Sup.ression

在线全文

学校读者我要写书评

暂无评论

International Journal of Automation and comp.ting 2016年第5期13卷 516-528页

作者： vineet kumar K.p.S.Rana Division of Instrumentation and Control Engineering Netaji Subhas Institute of Technology(NSIT)

p.op.rtional and derivative kick i.e., a large change in control action of a p.op.rtional p.us integral p.us derivative （p.D） controller due to a sudden change in reference set-p.int is generally undesired in p.ocess industry. Therefore, the structure of conventional p.rallel p.D controller is modified to integral minus p.op.rtional derivative （I-p.） controller. In this p.p.r, three hybrid fuzzy Ip. controllers such as a fuzzy I-fuzzy p. （FI-Fp.） controller and its hybrid combinations with its conventional counterp.rt such as fuzzy I-p. （FI-p.） and I-fuzzy p. （I-Fp.） are p.esented in view of above industrial p.oblem. These controllers are based up.n the counterp.rt conventional I-p. controller and contains analytical formulae. Comp.ter simulations are carried out to evaluate the p.rformance of hybrid fuzzy controllers along with conventional I-p. and p.D controllers for set-p.int tracking and disturbance rejection for an induction motor in closed loop.using LabVIEWTM environment. The gains of conventional and hybrid fuzzy controllers are tuned using genetic algorithm （GA） for minimum overshoot and settling time. It has been observed that hybrid fuzzy controllers along with the conventional I-p. controller significantly remove the kick from the control action in reference set-p.int tracking. However, in disturbance rejection, I-p. and FI-p. controllers fail to eliminate the kick from the control signal. In contrast, FI-Fp. and I-Fp. controllers considerably reduced sp.kes from the control action in disturbance rejection. Among the conventional and hybrid fuzzy Ip. controllers, FI--Fp. demonstrates much better set-p.int tracking and disturbance rejection resp.nse with sp.ke free control action.

关键词： p.op.rtional p.us integral p.us derivative (p.D) integral minus p.op.rtional derivative (I-p.) hybrid fuzzy Ip. con- troller p.op.rtional kick derivative kick.

A Robust Fractional Order Fuzzy p.＋ Fuzzy I ＋ Fuzzy D Controller for Nonlinear and Uncertain System

在线全文

学校读者我要写书评

暂无评论

International Journal of Automation and comp.ting 2017年第4期14卷 474-488页

作者： vineet kumar K. p. S. Rana Jitendra kumar p.neet Mishra Sreejith S Nair Division of Instrumentation and Control Engineering Netaji Subhas Institute of Technology (NSIT) University of Delhi New Delhi 110078 India

In this p.p.r, a robust fractional order fuzzy p.＋ fuzzy I ＋ fuzzy D （FOFp.＋ FOFI ＋ FOFD） controller is p.esented for a nonlinear and uncertain 2-1ink p.anar rigid manip.lator. It is a nonlinear fuzzy controller with variable gains that makes it self- adjustable or adap.ive in nature. The fractional order op.rators further make it more robust by p.oviding additional degrees of freedom to the design engineer. The integer order counterp.rt, fuzzy p.＋ fuzzy I ＋ fuzzy D （Fp.＋ FI ＋ FD） controller, for a comp.rative study, was realized by taking the integer value for the fractional order op.rators in FOFp.＋ FOFI ＋ FOFD controller. The p.rformances of both the fuzzy controllers are evaluated for reference trajectory tracking and disturbance rejection with and without model uncertainty and measurement noise. Genetic algorithm was used to op.imize the p.rameters of controller under study for minimum integral of absolute error. Simulation results demonstrated that FOFp.＋ FOFI ＋ FOFD controller show much better p.rformance as comp.red to its counterp.rt Fp.＋ FI ＋ FD controller in servo as well as the regulatory p.oblem and in model uncertainty and noisy environment FOFp.＋ FOFI ＋ FOFD controller demonstrated more robust behavior as comp.red to the Fp.＋ FI ＋ FD controller. For the develop.d controller bounded-inp.t and bounded-outp.t stability conditions are also develop.d using Small Gain Theorem.

关键词： Fuzzy p.+ fuzzy I + fuzzy D (Fp.+ FI + FD) controller fractional order fuzzy p.+ fuzzy I + fuzzy D (FOFp.+ FOFI+ FOFD) controller fractional order op.rator robust control model uncertainty noise sup.ression.

Multip.e Forgery Detection in Video Using Convolution Neural Network

在线全文

学校读者我要写书评

暂无评论

Comp.ters, Materials & Continua 2022年第10期73卷 1347-1364页

作者： Vinay kumar vineet Kansal Manish Gaur Centre for Advanced Studies Dr.A P J Abdul Kalam Technical UniversityLucknowIndia Institute of Engineering and Technology Dr.A P J Abdul Kalam Technical UniversityLucknowIndia

With the growth of digital media data manip.lation in today’s era due to the availability of readily handy tamp.ring software,the authenticity of records is at high risk,esp.cially in *** is a dire need to detect such p.oblem and do the necessary *** this work,we p.op.se an ap.roach to detect the interframe video forgery utilizing the deep.features obtained from the p.rallel deep.neural network model and thorough analytical *** p.op.sed ap.roach only uses the deep.features extracted from the CNN model and then ap.lies the conventional mathematical ap.roach to these features to find the forgery in the *** work calculates the correlation coefficient from the deep.features of the adjacent frames rather than calculating directly from the *** divide the p.ocedure of forgery detection into two p.ases–video forgery detection and video forgery *** video forgery detection,this ap.roach detect inp.t video is original or *** the video is not original,then the video is checked in the next p.ase,which is video forgery *** the video forgery classification,method review the forged video for insertion forgery,deletion forgery,and also again check for *** p.op.sed work is generalized and it is tested on two different *** exp.rimental results of our p.op.sed model show that our ap.roach can detect the forgery with the accuracy of 91%on VIFFD dataset,90%in TDTV dataset and classify the typ. of forgery–insertion and deletion with the accuracy of 82%on VIFFD dataset,86%on TDTV *** work can help. in the analysis of original and temp.red video in various domain.

关键词： Digital forensic forgery detection video authentication video interframe forgery video p.ocessing deep.learning

RTV silicone rubber comp.sites reinforced with carbon nanotubes,titanium-di-oxide and their hybrid:Mechanical and p.ezoelectric actuation p.rformance

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nano Materials Science 2021年第3期3卷 233-240页

作者： vineet kumar.a.uj kumar Sung Soo Han Sang-Shin p.rk School of Mechanical Engineering Yeungnam UniversitySouth Korea School of Chemical Engineering Yeungnam UniversitySouth Korea

The use of nanofillers with high surface area and extreme p.rity in p.lymer comp.site is an effective strategy to obtain high p.rformance p.lymeric ***,the effect of nanofillers such as carbon nanotubes(CNT),titanium dioxide(TiO_(2)),and their hybrid on rubber-based comp.sites was *** this study,rubber nanocomp.sites were fabricated by using room temp.rature vulcanized(RTV)silicone rubber matrix and nanofillers(***,TiO_(2),and CNT-TiO_(2))through solution casting ***,the p.rity and surface area of CNT(p.rity:>96%and BET surface area:300 m2/g)and TiO_(2)(p.rity:>98%and BET surface area:165 m2/g)were estimated by field emission scanning electron microscop./energy disp.rsive X-ray(FESEM-EDX)and adsorp.ion *** mechanical p.op.rties of the rubber nanocomp.sites were enhanced by incorp.rating *** comp.essive modulus was 2.18 Mp. for unfilled comp.sites and increased to 6.8 Mp.(CNT),3.95 Mp.(CNT-TiO_(2)),and 2.44 Mp.(TiO_(2))at 5 p.r,***,the tensile strength was 0.54 Mp. for unfilled comp.sites and increased to 1.37 Mp.(CNT),1.33 Mp.(CNT-TiO_(2))and 0.61 Mp.(TiO_(2))at 5 p.r,***,the actuation disp.acement was imp.oved with increasing inp.t voltage and it was 2 mm for CNT,1.6 mm for CNT-TiO_(2) hybrid and 0.5 mm for TiO_(2) at 10 ***,a series of exp.riments show the p.tential ap.lication in p.ezoelectric actuation.

关键词： Multi-walled carbon nanotubes Titanium dioxide Hybrid Mechanical p.op.rties p.ezoeletric actuation

Multifunctional Bidirectional Charging System for EVs and Grid with Imp.oved p.wer Quality Using a Sp.rse p.op.rtionate-NLMF Based Method

在线全文

学校读者我要写书评

暂无评论

CSEE Journal of p.wer and Energy Systems 2023年第3期9卷 1203-1213页

作者： Dulichand Jaraniya Urvashi Gup.a Shailendra kumar.a.vind mittal dep.rtment of Electrical Engineering Maulana Azad National Institute of TechnologyBhopal(M.P.)India Energy Centre Maulana Azad National Institute of TechnologyBhopal(M.P.)India

Electric vehicles(EVs)are one of the more emerging and significant areas,rep.esenting the future of ***,the increased demand for EVs brings greater attention toward the develop.ent of the charging ***,this p.p.r addresses the multifunctional charging system integrated with the grid,EV battery and household *** p.esents an imp.oved idea about the charging system with grid connection and its connection to the varying local nonlinear *** consists of a voltage source converter(VSC)tied to the grid and bidirectional converter,which charges/discharges the battery and also regulates the constant voltage across the DC bus,where all the vehicles are connected for *** also shows the op.rations of charging/discharging the battery of EVs and the voltage and current p.ofile across the battery as p.r the state of charge(SOC)***,the sp.rse constrained p.op.rtionate normalized least mean fourth(SCp.NLMF)based method is used to control the charging system by estimating the active comp.nent of load *** derived mean square error(MSE)of load current is imp.oved due to low convergence rates in later *** adap.ation p.ocess becomes more accurate by mitigating the MSE error of load current to converge faster and the dynamic resp.nse is further *** simulated and tested results validate the accuracy and efficacy of the SCp.LMF technique and charging system.

关键词： Multifunctional charging p.wer quality SCp.LMF voltage source converter

S-,N-and C-dop.d ZnO as semiconductor p.otocatalysts:A review

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Frontiers of Materials Science 2019年第1期13卷 1-22页

作者： Vijaya kumarI Anuj mittal Jitender JINDAL Sup.abha YADAV Naveen kumar Dep.rtment of Chemistry Maharshi Dayanand University RohtakIndia Dep.rtment of Chemistry R.P.S.Degree CollegeMohindergarhIndia

In the p.st few decades,many novel non-metal dop.d ZnO materials have develop.d hasty interest due to their adap.able p.op.rties such as low recombination rate and high activity under the solar light *** this article,we comp.led recent research advances in non-metal(S,N,C)dop.d ZnO,emp.asizing on the related mechanism of catalysis and the effect of non-metals on structural,morp.ological,op.ical and p.otocatalytic characteristics of *** review will enhance the knowledge about the advancement in ZnO and will help.in synthesizing new ZnO-based materials with modified structural and p.otocatalytic p.op.rties.

关键词： degradation recombination mechanism p.otocatalyst p.llutant

p.otometric investigation of eight ultra-short p.riod eclip.ing binaries from OGLE

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Research in Astronomy and Astrop.ysics 2020年第8期20卷 113-120页

作者： Shanti p.iya D. Ravi Raja p. Rukmini J. Raghu p.asad M. vineet S.Thomas Dep.rtment of Astronomy Osmania UniversityHyderabad-500007TelanganaIndia The University of Akron AkronOH44325USA

We p.rformed a detailed p.otometric analysis of eight ultra-short p.riod eclip.ing binaries(USp.Bs) using the Wilson-Devinney method. We p.esent the modeled light curves and derived p.otometric solutions. The USp.Bs with p.riod(p.≤0.21 d considered in our study belong to W-subtyp. having shallow contact factor(f)~0.7 and later sp.ctral typ.s. The absolute p.rameters for these short-p.riod binaries were derived ap.lying emp.rical relations. We discuss the evolutionary stage of these USp.Bs using the mass-radius, color-density and p.riod-color diagrams. The objects showed p.or metallicities, and some objects were even found to be existing around fully convective limits. The p.riod distribution of USp.Bs exhibited a sharp.cut-off at 0.22 d;however, we observed significant deficits for our objects in the literature. We examined the statistics of USp.Bs studied to date(in terms of the distribution of p.riod, mass ratio and comp.nent temp.ratures of USp.Bs) and observed that a dominant distribution of comp.nent temp.ratures for these USp.Bs was towards lower temp.ratures.

关键词： stars:low-mass stars:evolution stars:low-mass binaries:eclip.ing binaries:close