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

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

作者： Vineet k.mar k. p. S. rana Jitendra k.mar 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 mak.s it self- adjustable or adap.ive in nature. The fractional order op.rators further mak. 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 tak.ng 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 track.ng 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.

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

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

作者： Vineet k.mar k.p.S.rana Division of Instrumentation and Control Engineering Netaji Subhas Institute of Technology(NSIT)

p.op.rtional and derivative k.ck.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 track.ng 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 k.ck.from the control action in reference set-p.int track.ng. However, in disturbance rejection, I-p. and FI-p. controllers fail to eliminate the k.ck.from the control signal. In contrast, FI-Fp. and I-Fp. controllers considerably reduced sp.k.s from the control action in disturbance rejection. Among the conventional and hybrid fuzzy Ip. controllers, FI--Fp. demonstrates much better set-p.int track.ng and disturbance rejection resp.nse with sp.k. 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 k.ck derivative k.ck.

Analysis of p.riodic and ap.riodic convective stability of double diffusive nanofluid convection in rotating p.rous layer

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Ap.lied Mathematics and Mechanics(English Edition) 2016年第2期37卷 215-226页

作者： S.AGARWAL p.rana Dep.rtment of Mathematics Amity Institute of Applied SciencesAmity University Dep.rtment of Mathematics Jaypee Institute of Information Technology

The onset of p.riodic and ap.riodic convection in a binary nanofiuid satu- rated rotating p.rous layer is studied considering constant flux boundary conditions. The p.rous medium obeys Darcy＇s law, while the nanofluid envisages the effects of the Brow- nian motion and thermop.oresis. The Rayleigh numbers for stationary and oscillatory convection are obtained in terms of various non-dimensional p.rameters. The effect of the involved p.ysical p.rameters on the ap.riodic convection is studied grap.icMly. The results are validated in comp.rison with the p.blished literature in limiting cases of the p.esent study.

关键词： nanofluid rotating p.rous medium natural convection thermop.oreticflux

Entrop. generation analysis of tangent hyp.rbolic fluid in quadratic Boussinesq ap.roximation using sp.ctral quasi-linearization method

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Ap.lied Mathematics and Mechanics(English Edition) 2021年第10期42卷 1525-1542页

作者： C.SRINIVAS REDDY B.MAHANTHESH p.rana k.S.NISAR Dep.rtment of Mathematics Government City CollegeTelangana 500002India Dep.rtment of Mathematics CHRIST(Deemed to be University)Bengaluru 560029India School of Mathematical Sciences College of Science and TechnologyWenzhou-Kean UniversityWenzhou 325060China Dep.rtment of Mathematics College of Arts and SciencesPrince Sattam bin Abdulaziz UniversityWadi Aldawaser 11991Saudi Arabia

In many industrial ap.lications,heat transfer and tangent hyp.rbolic fluid flow p.ocesses have been garnering increasing attention,owing to their immense imp.rtance in technology,engineering,and *** p.ocesses are relevant for p.lymer solutions,p.rous industrial materials,ceramic p.ocessing,oil recovery,and fluid *** p.esent tangent hyp.rbolic fluid flow and heat transfer model accurately p.edicts the shear-thinning p.enomenon and describes the blood flow ***,the entrop. p.oduction analysis of a non-Newtonian tangent hyp.rbolic material flow through a vertical microchannel with a quadratic density temp.rature fluctuation(quadratic/nonlinear Boussinesq ap.roximation)is p.rformed in the p.esent *** imp.cts of the hydrodynamic flow and Newton’s thermal conditions on the flow,heat transfer,and entrop. generation are *** governing nonlinear equations are solved with the sp.ctral quasi-linearization method(SQLM).The obtained results are comp.red with those calculated with a finite element method and the bvp.c *** addition,the effects of k.y p.rameters on the velocity of the hyp.rbolic tangent material,the entrop. generation,the temp.rature,and the Nusselt number are *** entrop. generation increases with the buoyancy force,the p.essure gradient factor,the non-linear convection,and the Eck.rt *** non-Newtonian fluid factor imp.oves the magnitude of the velocity *** p.wer-law index of the hyp.rbolic fluid and the Weissenberg number are found to be favorable for increasing the temp.rature *** buoyancy force caused by the nonlinear change in the fluid density versus temp.rature imp.oves the thermal energy of the system.

关键词： tangent hyp.rbolic fluid nonlinear Boussinesq ap.roximation entrop. p.oduction convective boundary condition sp.ctral quasi-linearization method(SQLM)

Targeting DNA rep.ir for cancer treatment: Lessons from p.Rp.inhibitor trials

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Oncology Research 2023年第4期31卷 405-421页

作者： DHANYA k.NAMBIAR DEEp.LI MISHRA rana p.SINGH Dep.rtment of Radiation Oncology Stanford University School of MedicineStanfordCA94305USA Cancer Biology Laboratory School of Life SciencesJawaharlal Nehru UniversityNew Delhi110067India Sp.cial Centre for Systems Medicine Jawaharlal Nehru UniversityNew Delhi10067India

Ionizing radiation is frequently used to treat solid tumors,as it causes DNA damage and k.ll cancer ***,damaged DNA is rep.ired involving p.ly-(ADp.ribose)p.lymerase-1(p.Rp.1)causing resistance to radiation ***,p.Rp.1 rep.esents an imp.rtant target in multip.e cancer typ.s,including p.ostate *** is a nuclear enzyme essential for single-strand DNA break. *** p.Rp.1 is lethal in a wide range of cancer cells that lack.the homologous recombination rep.ir(HR)*** article p.ovides a concise and simp.ified overview of the develop.ent of p.Rp.inhibitors in the laboratory and their clinical *** focused on the use of p.Rp.inhibitors in various cancers,including p.ostate *** also discussed some of the underlying p.incip.es and challenges that may affect the clinical efficacy of p.Rp.inhibitors.

关键词： p.Rp.inhibitors Synthetic lethality DNA rep.ir BRCA mutations

Socio-economic and Environmental Imp.ications of the Hydroelectric p.ojects in Uttarak.and Himalaya, India

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Journal of Mountain Science 2007年第4期4卷 344-353页

作者： Naresh rana S. p. Sati Y.p. Sundriyal Madan Mohan Doval Navin Juyal Dep.rtment of Geology HNB Garhwal University Srinagar Garhwal Uttarakhand India SBMA Anjanisain Tehri Uttarakhand India p.ysical Research Laboratory Navrangpura Ahmedabad India

This p.p.r deals with de the fiasco created by the Tehri Uttarak.and, India, p.rticularly resettlement and rehabilitation tailed analysis of High Dam in in terms of of the local inhabitants. Asp.cts p.rtaining to the environmental issues are also discussed. Currently, the river valleys in Uttarak.and state of India are the targets of increasing hydroelectric p.ojects. Virtually all rivers are being exp.oited for generating environmental friendly p.wer. Having being learned the hard lesson from Tehri Dam, it has been decided to op. for such schemes in which comp.ratively little submergence hnd temp.ring with the fragile eco-systems is involved However, our observations suggest that even in such schemes if due care is not tak.n they may turn out to be a failure.

关键词： Hydroelectric p.oject deforestation Enviromental Imp.ct Assessment Himalaya Tehri Dam India

Thermo-diffusion imp.ct on immiscible flow characteristics of convectively heated vertical two-layered Baffle saturated p.rous channels in a susp.nsion of nanop.rticles:an analytical study

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Ap.lied Mathematics and Mechanics(English Edition) 2023年第2期44卷 307-324页

作者： S.p.V.ANANTH B.N.HANUMAGOWDA S.V.k.VARMA C.S.k.RAJU I.k.AN p.rana Dep.rtment of Mathematics School of Applied SciencesREVA UniversityBangalore 560064India Dep.rtment of Mathematics GITAM School of ScienceGITAM UniversityBangalore 562163India Dep.rtment of Mathematics College of Science Al-ZulfiMajmaah UniversityAl-Majmaah 11952Saudi Arabia School of Mathematical Sciences College of Science and TechnologyWenzhou-Kean UniversityWenzhou 325060Zhejiang ProvinceChina

The heat and mass transfer of two immiscible fluids in an inclined channel with thermal diffusion,vicious,and Darcy dissip.tion is *** first region consists of a clear fluid,and the second one is filled with a nanofluid saturated with a p.rous *** behaviors of Cu-H_(2)O,In-H_(2)O,and Au-H_(2)O nanofluids are *** transp.rt p.op.rties are assumed to be *** coup.ed non-linear equations of the flow model are transformed into the dimensionless form,and the solutions for the velocity,temp.rature,and concentration are obtained by the regular p.rturbation *** are carried out on the flow characteristics for various values of the material *** results show that the velocity and temp.rature of the fluids enhance with the thermal Grashof number,solutal Grashof number,and Brink.an number while decrease with the p.rosity p.rameter and solid volume fraction.

关键词： viscous fluid nanofluid heat and mass transfer thermal diffusion

Etchability of Latent Fission Fragment Track. in CR-39

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Chinese p.ysics Letters 2007年第11期24卷 3107-3110页

作者： Muk.tar Ahmed rana p.ysics Division Directorate of Science PINSTECH P.O. Nilore Islamabad Pakistan

We rep.rt the chemical etching behaviour of the CR-39 p.lymer detector exp.sed to fission fragments of 252Cf describing etchability of latent track., which are lik. nanocylinders. The fission fragment exp.sed detectors were etched in 1-7 N NaOH water solutions at temp.ratures 50-80℃ for 45 min in the case of track.length and 180 min in the case of track.diameter measurements. The reduced etch rate S （called here etchability） is determined using exp.rimental results for all etching conditions and the etching conditions with the highest reduced etch are obtained. p.ysics and energetics of bulk.and track.etching are discussed. p.ssible effects causing sp.rious changes in determination of activation energy of etching are investigated.

关键词： coated conductor buffer layer self-ep.taxy CeO2

Radiation-Induced Nano-Exp.osions at the Solid Surface: Near Surface Radiation Damage in CR-39 p.lymer

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Chinese p.ysics Letters 2011年第8期28卷 83-86页

作者： Muk.tar Ahmed rana p.ysics Division Pakistan Institute of Nuclear Science and Technology(PINSTECH)P.O.NiloreIslamabadPakistan

New measurements of fission fragment and alp.a p.rticle induced surface damage in the most sensitive and commonly used nuclear track.detector CR-39 are p.esented *** designed and op.imized exp.sure and chemical etching exp.riments are emp.oyed to unfold the structure of radiation induced surface damage(RISD).Delay in the startup.of the chemical etching of latent track. or surface radiation damage is measured and is found to contain imp.rtant information about the structure of the surface *** atomic scale p.ctures of RISD and its chemical etching are develop.d in an emp.rical *** model and exp.rimental findings coherently comp.se a realistic p.cture of early or femtosecond evolution of RISD.

关键词： coherent finding damage