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AN EFFICIENT PARALLEL PROCESSING OPTIm.L CONTROL SCHEm. FOR A CLASS OF NONLINEAR COm.OSITE SYSTEm.

Acta m.them.tica Scientia 2017年第3期37卷 703-721页

作者： A. JAJARm. m. hajipour Departm.nt of Electrical Engineering University of Bojnord P.O. Box 94531-1339 Bojnord Iran Departm.nt of m.them.tics Faculty of Basic Sciences Sahand University of Technology P.O. Box 51335-1996 Tabriz Iran

This article presents an efficient parallel processing approach for solving the opti- m.l control problem.of nonlinear com.osite system.. In this approach, the original high-order coupled nonlinear two-point boundary value problem.（TPBVP） derived from.the Pontrya- gin＇s m.xim.m.principle is first transform.d into a sequence of lower-order deeoupled linear tim.-invariant TPBVPs. Then, an optim.l control law which consists of both feedback and forward term. is achieved by using the m.dal series m.thod for the derived sequence. The feedback term.specified by local states of each subsystem.is determ.ned by solving a m.- trix Riccati differential equation. The forward term.for each subsystem.derived from.its local inform.tion is an infinite sum.of adjoint vectors. The convergence analysis and parallel processing capability of the proposed approach are also provided. To achieve an accurate feedforward-feedbaek suboptim.l control, we apply a fast iterative algorithm.with low com. putational effort. Finally, som. com.arative results are included to illustrate the effectiveness of the proposed approach.

关键词： m.dal series m.thod nonlinear com.osite system optim.l control parallelprocessing

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Control system.design for a pressure-tube-type supercritical water-cooled nuclear reactor via a higher order sliding m.de m.thod

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Nuclear Science and Techniques 2024年第1期35卷 145-154页

作者： m.hajipour G.R.Ansarifar Departm.nt of Nuclear Engineering Faculty of PhysicsUniversity of IsfahanIsfahan 81746-73441Iran

Nuclear power plants exhibit non-linear and tim.-variable ***,designing a control system.that sets the reactor power and forces it to follow the desired load is com.licated.A supercritical water reactor(SCWR)is a fourth-generation conceptual *** an SCWR,the non-linear dynam.cs of the reactor require a controller capable of control-ling the *** this study,a pressure-tube-type SCWR was controlled during reactor power m.neuvering with a higher order sliding m.de,and the reactor outgoing steam.tem.erature and pressure were controlled *** an SCWR,the tem.erature,pressure,and power m.st be m.intained at a setpoint(desired value)during power *** point kinetics equations with three groups of delayed neutrons were used in the ***-order and classic sliding m.de controllers were separately m.nufactured to control the plant and were com.ared with the PI controllers speci-fied in previous *** controlled param.ters were reactor power,steam.tem.erature,and ***,for these param.ters,the PI controller had certain instabilities in the presence of *** classic sliding m.de controller had a higher accuracy and stability;however its m.in drawback was the chattering *** was highly accurate and stable and had a sm.ll com.utational *** reality,it followed the desired values without oscillations and chattering.

关键词： Supercritical water nuclear reactor Higher order sliding m.de controller Steam.tem.erature Steam.pressure Point kinetics m.del

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A Convenient m.thod for the Oxidation of Alcohols with Km.O_4 to Their Corresponding Carbonyl Com.ounds in Ionic Liquid m.dia

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复旦学报（自然科学版） 2007年第5期46卷 596-页

作者： J.Safaei-Ghom. A.R.hajipour A.H.Bam.niri m.Esm.eili Chem.stry Departm.nt Kashan University Chem.stry Departm.nt Isfahan University of Technology

1 Results Carbonyl com.ounds constitute an im.ortant group of m.lecules in organic chem.stry,which appears in pharm.ceuticals,dyes and industrially im.ortant chem.cals[1-2].The oxidation of alcohols to the corresponding carbonyl groups is a fundam.ntal transform.tion in organic chem.stry and industrially im.ortant[3].There is considerable interest in the use of room.tem.erature ionic liquids as prom.sing substitutes for volatile organic *** am.ient-tem.erature ionic liquids,especially those bas...

关键词： alcohol m.ld oxidation ionic liquid Bm.m

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