激光切割永磁直线伺服系统的反演滑模控制

doi:10.19595/j.cnki.1000-6753.tces.161675

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Abstract Inthispaper,aback-steppingslidingmodecontrolstrategyisadoptedforlasercuttingservocontrolsystemdrivenbypermanentmagnetlinearsynchronousmotors(PMLSM),whereitisusedtobreakthecontrolsystemintosubsystemsforimprovedcontrol.Inordertoimproveprecision,strengthenrobustnessanddecreasechatteringinthecontrolsystem,thepositionandcurrentloopsareindependentlydesignedbyusingslidingmodecontrolmethods.Inthepositionloop,thefrictionanddisturbanceofthelow-speed-motionservosystemareconsidered,adualobserverisdesignedtoestimatetheunmeasuredstateandparametersofLuGrefrictionmodel,andanadaptiveexponentialreachinglawslidingcontrollerisproposedforfrictionanddisturbancefeedforwardcompensation.Incurrentloop,thechattering-freeterminalslidingmodecontrollerisdesigned.TheglobalstabilityandglobalfinitetimeconvergenceperformancehasbeenprovedbyLyapunvofunction.Finally,inordertoobservetheservotrackingperformanceofpositionandvelocity,thethree-close-loopPIDcontrolmethodandtheproposedmethodhavebeencomparativelytestedonthelasercuttingpermanent-magnet-linearservobench.Theexperimentalresultsshowthattheproposedcontrolmethodcaneffectivelyimprovethecontrolperformanceofthelasercuttingservosystem.

Key words： Permanentmagnetlinearservo back-steppingslidingmode exponentialreachinglaw chatteringfreeterminalsliding trackingperformance

Received: 21 October 2016 Published: 26 February 2018

PACS:	TM359.4
	TP273

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	ZhangBo
	QiRong
	LinHui

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ZhangBo,QiRong,LinHui. Back-SteppingSlidingModeControlofLaserCutting PermanentMagnetLinearServoControlSystem[J]. Transactions of China Electrotechnical Society, 2018, 33(3): 642-651.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.161675 OR https://dgjsxb.ces-transaction.com/EN/Y2018/V33/I3/642

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