工程科学学报
工程科學學報
공정과학학보
Journal of University of Science and Technology Beijing
2015年
4期
509-516
,共8页
球磨机%制粉%干扰抑制%线性控制系统%解耦%鲁棒性
毬磨機%製粉%榦擾抑製%線性控製繫統%解耦%魯棒性
구마궤%제분%간우억제%선성공제계통%해우%로봉성
ball mills%coal pulverizing%disturbance rejection%linear control systems%decoupling%robustness
球磨机制粉系统具有大惯性、大时滞和强耦合等特点,很难建立精确的数学模型。本文分析了球磨机制粉系统的动态特性,并为其设计分散线性自抗扰控制方案。该方案综合分散控制和线性自抗扰控制器的优点,结构简单,不依赖于对象精确模型,可以对被控对象中存在的耦合、干扰和不确定性等进行估计并补偿。根据实际现场要求,对球磨机制粉系统进行设定值跟踪实验、输入扰动实验和性能鲁棒性实验,并比较所设计方案与PID方案的控制性能。结果表明,分散线性自抗扰控制具有更强的解耦能力和抗干扰能力,且性能鲁棒性更优。
毬磨機製粉繫統具有大慣性、大時滯和彊耦閤等特點,很難建立精確的數學模型。本文分析瞭毬磨機製粉繫統的動態特性,併為其設計分散線性自抗擾控製方案。該方案綜閤分散控製和線性自抗擾控製器的優點,結構簡單,不依賴于對象精確模型,可以對被控對象中存在的耦閤、榦擾和不確定性等進行估計併補償。根據實際現場要求,對毬磨機製粉繫統進行設定值跟蹤實驗、輸入擾動實驗和性能魯棒性實驗,併比較所設計方案與PID方案的控製性能。結果錶明,分散線性自抗擾控製具有更彊的解耦能力和抗榦擾能力,且性能魯棒性更優。
구마궤제분계통구유대관성、대시체화강우합등특점,흔난건립정학적수학모형。본문분석료구마궤제분계통적동태특성,병위기설계분산선성자항우공제방안。해방안종합분산공제화선성자항우공제기적우점,결구간단,불의뢰우대상정학모형,가이대피공대상중존재적우합、간우화불학정성등진행고계병보상。근거실제현장요구,대구마궤제분계통진행설정치근종실험、수입우동실험화성능로봉성실험,병비교소설계방안여PID방안적공제성능。결과표명,분산선성자항우공제구유경강적해우능력화항간우능력,차성능로봉성경우。
The ball mill coal-pulverizing ( BMCP) system is a multivariable coupled system with long time-delay, large inertia and parameter uncertainties. This paper analyzes the dynamic characteristics of the BMCP system and proposes a control strategy based on a decentralized linear active disturbance rejection controller ( LADRC) . The proposed control strategy has simple structure, strong disturbance rejection ability, and is independent of accurate mathematical models. When it is applied to the BMCP system, parameter uncertainties, disturbances and coupling in the BMCP system can be estimated and actively compensated. Based on industrial control requirements, set point tracking simulation, perturbation simulation and random Monte-Carlo experiment are carried out. In compari-son with a PID controller, the LADRC achieves better control results and has a stronger robustness.