資源描述:
《pmsm伺服系統(tǒng)速度環(huán)pi控制器參數(shù)自整定及優(yōu)化》由會員上傳分享,免費在線閱讀,更多相關內(nèi)容在行業(yè)資料-天天文庫。
1、第18卷第2期電機與控制學報Vol.18No.22014年2月ElectricMachinesandControlFeb.2014PMSM伺服系統(tǒng)速度環(huán)PI控制器參數(shù)自整定及優(yōu)化12343肖啟明,楊明,劉可述,賈下跖,秦潔(1.重慶三峽學院機械工程學院,重慶400410;2.哈爾濱工業(yè)大學電氣工程系,黑龍江哈爾濱150001;3.中船重工集團第七○七研究所九江分部,江西九江332000;4.中電投江西核電有限公司,江西九江332000)摘要:針對PMSM伺服系統(tǒng)PI參數(shù)自整定方法依賴系統(tǒng)數(shù)學模型精確度或優(yōu)化時間長、整定效率低的問題,提出一種將基于
2、模型和規(guī)則的參數(shù)自整定思想相結(jié)合的參數(shù)自整定及優(yōu)化策略。首先以伺服系統(tǒng)的數(shù)學模型為基礎,利用速度環(huán)開環(huán)截止頻率和相角裕度等頻域性能指標來設計出一個較為適當?shù)乃俣拳h(huán)PI參數(shù);然后以ITAE為系統(tǒng)階躍響應的評價函數(shù),并在理論設計的PI參數(shù)附近利用二自由度迭代整定法搜索使評價函數(shù)獲得最小值的速度環(huán)PI參數(shù),從而得到使伺服系統(tǒng)工作在最優(yōu)控制性能的PI參數(shù)。實驗結(jié)果證明,通過該方法優(yōu)化后的速度環(huán)PI參數(shù)能使伺服系統(tǒng)具有良好的動態(tài)跟蹤性能和較強的負載抗擾性。關鍵詞:永磁同步伺服系統(tǒng);參數(shù)自整定;二自由度迭代法;PI控制器;頻域設計法中圖分類號:TP279文獻
3、標志碼:A文章編號:1007-449X(2014)02-0102-06Parametersself-tuningandoptimizationofspeedPIcontrollerforPMSMservosystem12343XIAOQi-ming,YANGMing,LIUKe-shu,JIAXia-zhi,QINJie(1.MechanicalEngineeringCollegeofChongqingThreeGorgesUniversity,Chongqing400410,China;2.Dept.ofElecctricalEngineeri
4、ng,HarbinInstituteofTechnology,Harbin150001,China;3.707InstituteJiujiangdivisionofChinaShipbuildingIndustryCorporation,Jiujiang332000,China;4.CPIJiangxiNuclearPowerCO.Ltd,Jiujiang332000,China)Abstract:InordertosolvetheproblemofPIparametersself-tuningaboutbeingdependentonaccur
5、acyofsystemmathematicalmodelorlongoptimizationtime,anovelandpracticalparametersself-tuningandop-timizationmethodforPMSMservosystemwasproposed.ThemethodobtainedoptimalparametersofPIcontrollerbycombiningparametersself-tuningideasbasedonmodelandrules.Firstly,appropriatePIparamet
6、ersbyfrequency-domainperformanceindexwasdesigned,suchascutofffrequencyandphasemarginofspeedloop.Thenwithintegratedtimeandabsoluteerror(ITAE)asevaluationfunction,two-degrees-freedomiterationwasutilizedtoseekPIparameterswhichmadesystemobtaintheminimumvalueofevaluationfunctionin
7、thevicinityoftheoreticalPIparameters.TherebyPIparameterswereachievedwhichmadePMSMservosystempossessoptimalcontrolperformance.TheexperimentalresultsshowthattheoptimizedPIparametersmakesPMSMservosystemowngooddynamicperformanceandloadimmunity.Keywords:permanent-magnetsynchronous
8、servosystem;gainself-tuning;two-degrees-freedomiterationmethod;PIcon