超大型電火花成型機(jī)床DM71200數(shù)控系統(tǒng)研究.pdf

1、大連理工大學(xué)碩士學(xué)位論文超大型電火花成型機(jī)床DM71200數(shù)控系統(tǒng)研究姓名：郭劍鷹申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：機(jī)電控制及其自動(dòng)化指導(dǎo)教師：趙福令19990601大連理工大學(xué)碩士學(xué)位論文ABSTRACTABSTRACTThisPaDerdevelopedanumericalcontr01systembasedonindustrialpersonalcomputeronaccountofthOSCproblemsoftheavailablesy

2、sternofthesuperlargescaleEDMmachineryDM71200devisedbytheBeijingInstituteofElec蛹calMachiningTheCUlTentsystemcomprisesofcomputerinterfacehardware，positioncontrolcircuit，voltagesamplingcircuitandthecontrolsystemsoftwareWead

3、optedthefullclosedJ100pcontromethodandtheprincipleaxisdrivenbyhydrauliccylinderaswell，becauseofthedeadweightoftheheadoftheprincipleaxisandtheweightofthelargeworkpiecemouldtomachineWepropoundedthenumericalsamplingpulsecom

4、parisonpositionservocontroltechniquebythegenericarraylogic(OAL)chipAstotheautomaticservoofthedischargegap，weusedthewayofthefullnumericalcontrol，thatistosay，numericallysettingtherangeofthethresholdvoltage，samplingthevolta

5、gebetweenthedischargegapandjudgingtheconditionofthedischargegapwhencontrollingofautomaticservoofthegapbytheprogramInthisway，wecanadoptsuchadvancedcontrolmeⅡ10dsasfuzzycontrol、artificialneuralnetworkeasilyinthenextsteDand

6、whichmakesitpossiblethattheEDMmachiningbreaksawayfromthedependenceoftheoperatorWeobtainhyper口recisionmachiningbymeansofnumericalLORANpatternIt’Smeaningfultoimprovethemachihingsurfacequality，shortenthemachiningcycleandlow

7、erthecostEDMisakindofprocessdependentmoreonexperiencethanusnalonesSoitiSdifficulttodevelopaperfectcontrolsysteminashortperiodoftimeAsfarasthenewlycontrivedsystemiSconcernedtherearestillmanyparameterstoselectandconfirmthr