简介:智能电外科设备通过功率控制,实现作用于不同组织时保持输出功率特性不变,从而保护组织不被烧伤,以达到良好的手术效果,其中输出功率反馈控制模块是其核心技术之一。我们设计的反馈控制模块由输出电压、电流检测电路以及单片机控制电路组成,与开关电源模块和射频功率放大器模块构成闭环反馈回路,通过实时检测表征负载上的电压、电流信号,结合单片机内部嵌入的PID控制算法,能够自动控制射频能量工作在不同模式;实验结果表明,PID控制算法中被控量从零输出到满量程输出所需时间在25.0ms以内,实际输出值与预设值误差在±5%以内,并且能够根据负载阻抗变化自动调节输出工作在不同模式。该模块能够快速、准确且稳定地控制输出达到预设值,从而实现自适应功率控制方式,为开发智能电外科设备提供核心技术基础。
简介:AnExperimentalResearchonActiveControlofVibrationStraininaFlexibleLinkagewithPiezoceramicActuatorsandGageSensors.Applicationsoftheeigenvaluetheoremonapproximateoptimizationsofnonlinearregulators.ApproximationstoOptimalFeedbackControlUsingaSuccessiveWaveletCollocationAlgorithm.ComputationofFeedbackOperatorsforDistributedParameterSystemswithNon-NormalLinearizations.
简介:[篇名]Astudyondomainofattractioninfunctionspaceunderatimedelaysystem-timedelayedfeedbackcontrolofDuffingsystem,[篇名]Activecontrolofsurgeoccurringinacentrifugalcompressor(lst,report,controlofsurgebysmallcontrolvalve),[篇名]ActiveControlofSurgeOccurringinaCentrifugalCompressor(2ndReport,NonlinearControlofSurgebyDelayedFeedback),[篇名]Controllingchaosmethodbyafeedbackofadelayedstate,[篇名]D.F.C.ofQuasi-Passive-Dynamic-WalkingRobotQuartetⅢ,[篇名]DelaycontrolaspectsofthechaoticRosslersystem,[篇名]Delayedfeedbackcontrolofmagneticdomain-wallmotion,[篇名]Differencefeedbackcontrolofchaos。
简介:AComparativeStudyofFeedbackControllerSensitivitytoallOrdersofPMDforaFixedDGDCompensator.Aconstructionofnonlinearservosystembyusingnonlinearplug-inadaptivecontrolscheme.AcontrollerdesignforreferencesignalwiththeN-thpoweroftilne.ALMI-basedSupervisoryRobustControlforHybridVehicles.ALPVApproachtoRobustH{sub}2andH{sub}∞,StaticOutput-FeedbackDesign.