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1、ResearchonAdvancedPIDControlStrategyofElectricLoadSimulatorAbstractLoadSimulatorisapassiveforceservocontrolsystem,whichcansimulateaerodynamicloadonaircraft,itisoneoftheimportantequipmentforgroundsimulation.Withthedevelopmentofpowerelectronictechnology,themotorperformancegetimprove
2、dalot,electricloadsimulatorgraduallyintheaerospace,industrialproductionandotherfieldshasbeenwidelyapplied・TheconventionalcontrolstrategycombiningwithPIDcontrolisdifficulttocarryontheeffectiveinhibition,becauseoftheextratorqueandthenonlinearanduncertaintyofthesystemitself.Therefore
3、,inordertoimprovethecontrolperformanceofsystem,theadvancedPIDcontrolstrategystudyontheelectricloadsimulatorisverynecessary.Inthispaper,throughtheanalysisofthemechanicalstructureandworkingprincipleofelectricloadsimulator,mathematicalmodeloftheloadingsystemisestablished,themechanism
4、ofsurplustorqueareanalyzed,allkindsofcontrolstrategiesarediscussedinthecourseofthedevelopmentoftheloadsimulato匚Atthesametime,theiradvantagesanddisadvantagesarepointedout.ItuseMATLABsoftwaretosimulateandanalysistheconventionalPIDcontrolandtheadvancedPIDcontrol,theadvancedPIDcontrol
5、includingfuzzyPIDcontrolandneuralnetworkPIDcontrol.ThesimulationresultsshowthatadvancedPIDcontrolstrategycanmaketheoutputtorqueofsystemtotracktheinputtorquequicklyandaccurately,itcaneffectivelyrestrainextratorqueandimprovethecontrolperformance.Keywords：electricloadsimulator,extrat
6、orque,fuzzyPIDcontrol,neuralnetworkPIDcontrol目录第1章绪论11丄研究背景及意义11.2电动负载模拟器发展概况21.3控制策略的分析21.3.1传统控制策略31.3.2智能控制策略41.4论文研究内容5第2章电动负载模拟器的数学建模62丄电动负载模拟器的机械结构62.2电动负载模拟器的工作原理62.3电动负载模拟器的数学模型72.3.1加载电机数学模型72.3.2PWM驱动器数学模型82.3.3力矩传感器数学模型102.3.4电动加载系统数学模型102.4系统影响因素分析112.4.1多余力矩定义112.4.2多
7、余力矩产生机理112.4.3多余力矩的特点122.4.4非线性因素及不确定因素分析12第3章系统控制器设计143丄系统性能分析143.1.1系统根轨迹分析143.1.2系统频率响应分析153.1.3系统的时域分析163.2PID控制器设计173.2丄PID控制原理173.2.2PID参数整定方法183.3PID控制的仿真分析20第4章模糊PID控制224.1模糊控制224.1.1模糊控制的基本原理224.1.2模糊控制器234.1.3模糊控制器的设计步骤254.1.4模糊控制的特点274.2模糊自适应整定PID控制274.2.1模糊自适应整定PID控制原理
8、274.2.2模糊自适应整定PID控制器的设计314.3模糊自适应
