摘要pH过程在工业生产中非常普遍,大量化工过程都需要对其化学反应过程中得pH值进行控制。其广泛存在于化工、生物工艺、污水处理、发电等工业中,对这一过程进行良好得控制有着十分重要得意义。由于pH过程得高度非线性与滞后性,一直就是控制界得难点。pH值得控制在化工生产过程中并非易事。本文针对这一问题进行了研究分析,对pH值中与过程得机理模型做了简单描述。介绍了酸碱中与过程pH值得变化特性,并介绍了几种控制方法,包括常规得PID控制、补偿控制,以及比较先进得智能控制方法。本文主要分析了pH值曲线得非线性特点,并介绍了近年来应用于pH过程控制得非线性控制理论与方法,然后根据pH值控制得特点重点介绍了对pH过程使用非线性PID控制设计。这种设计能较好得处理pH过程得非线性。以及通过继电器整定方法自动地改变控制器整定参数得方式与方法,给出了系统得控制框图,并进行Matlab仿真研究。关键词pH得中与;非线性控制;PID控制;继电器反馈整定AbstractPHinthecourseoftheprocessofindustrialproductionisverymon,alargenumberofchemicalprocessesrequireachemicalreactiontoitspHvalueintheprocessofcontrol、Itiswidelyusedintheirchemical,biologicaltechnology,sewagetreatment,powergenerationindustry,itisveryimportanttocontralthisprocess、AsthepHofthehighlynonlinearprocessandthelaghasbeendifficulttocontroltheindustry、ThecontrolofPHinthechemicalproductionprocessisnoteasy、ThispaperanalysistheproblemanddoasimpledescriptionofthemodeltothepHofthemechanismandcounteractprocessoftheacerbityandthealkali、ItintroducedtheprocessofthetraitofchangestheintheneutralizeofpHoftheacerbityandthealkali,andintroducedseveralcontrolmethods,includingconventionalPIDcontrol,pensationcontrol,aswellasmoreadvancedmethodsofintelligentcontrol、ThispaperanalyzesthecurvesofthepHofthenon-linearcharacteristics,anddescribestheoryandmethodsoftheprocessinrecentyearsthecontrolofthepHappliedtononlinearcontrol,andtheninaccordancewiththecharacteristicsofthecontrolofthepHoffocusingontheuseofnon-linearofthetheneutralizeprocessofPHofthePIDcontroldesign、Thisdesigncandealwiththeprocessofthenon-linearpHbetter、AswellasthroughtheautomatictuningmethodoftherelayofPIDcontrollertochangethewaysandmeansofparameters,giventhecontrolsystemblockdiagram、Makethematlabsimulationandreachaconclusion、KeywordstheneutralizeofPH,nonlinearcontrol,PIDcontrol,thefeedbacktuningoftherelay目录TOC\o"1-3"\h\z\uHYPERLINK\l"_Toc232408314"摘要PAGEREF_Toc232408314\hIHYPERLINK\l"_Toc232408315"AbstractPAGEREF_Toc232408315\hIIHYPERLINK\l"_Toc232408316"第1章绪论PAGEREF_Toc2324