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《化学科学与工程前沿(英文)》 2022年 第16卷 第2期 页码 237-250 doi: 10.1007/s11705-021-2058-6
关键词: nonlinear model predictive control black-box modeling continuous-time system identification machine learning industrial applications of process control
王冬青
《中国工程科学》 2006年 第8卷 第2期 页码 39-43
对现有神经网络对非线性时滞系统的时滞辨识方法进行了补充说明和分析,同时指出现有的NARMA模型修正方法对时滞系统的不当之处。以时滞系统神经网络预测控制为例,介绍了NARMA模型的正确修正方法,仿真证明了所提出的修正方法能获得好的控制性能及抗干扰能力。
Identification of pollution sources in rivers using a hydrodynamic diffusion wave model and improved
《环境科学与工程前沿(英文)》 2023年 第17卷 第7期 doi: 10.1007/s11783-023-1685-1
● A hydrodynamic-Bayesian inference model was developed for water pollution tracking.
关键词: Identification of pollution sources Water quality restoration Bayesian inference Hydrodynamic model Inverse problem
Blind identification of threshold auto-regressive model for machine fault diagnosis
LI Zhinong, HE Yongyong, CHU Fulei, WU Zhaotong
《机械工程前沿(英文)》 2007年 第2卷 第1期 页码 46-49 doi: 10.1007/s11465-007-0007-9
Reza KHADEMI-ZAHEDI, Pouyan ALIMOURI
《结构与土木工程前沿(英文)》 2019年 第13卷 第4期 页码 965-980 doi: 10.1007/s11709-019-0530-x
关键词: operational modal analysis solar power plant structure multi-setup stochastic subspace bees optimization algorithm sensitivity analysis
Kinematic Model Building and Servo Parameter Identification of 3-HSS Parallel Mechanism
YANG Zhi-yong, WU Jiang, HUANG Tian, NI Yan-bing
《机械工程前沿(英文)》 2006年 第1卷 第1期 页码 60-66 doi: 10.1007/s11465-005-0019-2
Aiming at a parallel mechanism with three degrees of freedom, a method for dynamic model building and the parameter identification of its servosystem is presented. First, the reverse solution models of position, velocity, and acceleration of parallelogram branch structure are deduced, and then, its dynamic model of a rigid body is set up by using the virtual work principle. Based on the above model, a method to identify the servo parameter of the parallel mechanism is put up. In this method, the triangle-shaped input with variable frequency is adopted to offset the disadvantages of pseudorandom number sequence in parameter identification, such as dramatically changing the vibration amplitude of the motor, easily impacting the motor that results in its velocity loop to easily open, and so on. Moreover, the rotary inertia can also be identified by the additive mass. The abovementioned data will lay a solid foundation for the optimum performance of the system in the whole workspace.
关键词: building acceleration additive workspace optimum performance
XIE Hong, HE Yi-gang, ZENG Guan-da
《机械工程前沿(英文)》 2006年 第1卷 第2期 页码 233-237 doi: 10.1007/s11465-006-0003-5
关键词: block-pulse function nonlinear multiple diagnosis combination
State identification of home appliance with transient features in residential buildings
《能源前沿(英文)》 2022年 第16卷 第1期 页码 130-143 doi: 10.1007/s11708-022-0822-z
关键词: nonintrusive load monitoring (NILM) load disaggregation online load disaggregation Kalman filtering factorial hidden Markov model (FHMM) Labeled hIgh-Frequency daTaset for Electricity Disaggregation (LIFTED)
Ali KARIMPOUR, Salam RAHMATALLA
《结构与土木工程前沿(英文)》 2020年 第14卷 第6期 页码 1331-1348 doi: 10.1007/s11709-020-0686-4
关键词: structural model validation eigenvalue problem response surface inverse problems
许斌,贺佳
《中国工程科学》 2011年 第13卷 第9期 页码 76-82
提出一种完全基于激励和结构响应实测数据的结构动力系统非线性恢复力识别方法,并通过在一个4层钢结构模型中引入具有非线性特性的磁流变阻尼器(MR)模拟非线性恢复力,基于此模型结构在不同的激励方式下的动力响应测量数据,验证了该方法的有效性。对于结构的各自由度均受到激励的情况,运用最小二乘拟合算法识别出等效线性系统的物理参数(质量、刚度和阻尼矩阵),进而得到模型结构振动过程中MR阻尼力随时间变化情况并与实验实测结果进行了比较。针对结构仅在有限自由度上受到激励的情况,对以上方法进行了改进,提出了一种非线性系统恢复力的非参数化识别方法,利用结构中弹性恢复力的对称关系,分步确定了结构各层间恢复力模型,从而得到MR恢复力的大小并与实测结果进行了比较。结果表明,基于时域实测信号的非线性系统恢复力识别法在完整激励和非完整激励下均能有效地识别结构的非线性恢复力特性。文章所述方法可以运用于工程结构在动力荷载作用下的损伤发生发展过程的监测与识别。
多目标自适应优化模型预测控制——降低氧化锌回转窑的碳排放 Article
Ke Wei, Keke Huang, Chunhua Yang, Weihua Gui
《工程(英文)》 2023年 第27卷 第8期 页码 96-105 doi: 10.1016/j.eng.2023.01.017
The zinc oxide rotary kiln, as an essential piece of equipment in the zinc smelting industrial process, is presenting new challenges in process control. China's strategy of achieving a carbon peak and carbon neutrality is putting new demands on the industry, including green production and the use of fewer resources; thus, traditional stability control is no longer suitable for multi-objective control tasks. Although researchers have revealed the principle of the rotary kiln and set up computational fluid dynamics (CFD) simulation models to study its dynamics, these models cannot be directly applied to process control due to their high computational complexity. To address these issues, this paper proposes a multi-objective adaptive optimization model predictive control (MAO-MPC) method based on sparse identification. More specifically, with a large amount of data collected from a CFD model, a sparse regression problem is first formulated and solved to obtain a reduction model. Then, a two-layered control framework including real-time optimization (RTO) and model predictive control (MPC) is designed. In the RTO layer, an optimization problem with the goal of achieving optimal operation performance and the lowest possible resource consumption is set up. By solving the optimization problem in real time, a suitable setting value is sent to the MPC layer to ensure that the zinc oxide rotary kiln always functions in an optimal state. Our experiments show the strength and reliability of the proposed method, which reduces the usage of coal while maintaining high profits.
关键词: Zinc oxide rotary kiln Model reduction Sparse identification Real-time optimization Model predictive control Process control
Identification of cancer stem cells provides novel tumor models for drug discovery
null
《医学前沿(英文)》 2012年 第6卷 第2期 页码 112-121 doi: 10.1007/s11684-012-0199-1
Cancer stem cells (CSCs) have received considerable attention from the research community since they were first reported in human acute myeloid leukemia 15 years ago. Accumulating evidence suggests that CSCs are responsible for tumor initiation and progression, drug resistance, and metastasis in both liquid and solid tumors. These findings lead to the development of novel compounds targeting CSC populations that is becoming increasingly important for eradicating CSCs in heterogeneous tumor masses and to cure the cancer. Since 2003, we have participated in CSC studies and encountered crucial early events in the field. This article reviews the history of CSC biology, clarifies the term and its definition, and further addresses the issue of how to utilize CSCs in therapeutic target discovery and drug development based on our substantial experience.
Variable stiffness and damping magnetorheological isolator
Yang ZHOU, Xingyu WANG, Xianzhou ZHANG, Weihua LI
《机械工程前沿(英文)》 2009年 第4卷 第3期 页码 310-315 doi: 10.1007/s11465-009-0039-4
关键词: magnetorheological (MR) fluid stiffness damping mathematical model dynamic performance parameter identification
General expression for linear and nonlinear time series models
Ren HUANG, Feiyun XU, Ruwen CHEN
《机械工程前沿(英文)》 2009年 第4卷 第1期 页码 15-24 doi: 10.1007/s11465-009-0015-z
关键词: linear and nonlinear autoregressive model system identification time series analysis
Ambient vibration testing and updating of the finite element model of a simply supported beam bridge
Ivan Gomez ARAUJO, Esperanza MALDONADO, Gustavo Chio CHO
《结构与土木工程前沿(英文)》 2011年 第5卷 第3期 页码 344-354 doi: 10.1007/s11709-011-0124-8
关键词: modal analysis parameter identification ambient vibration test Eigensystem Realization Algorithm (ERA) method finite element method
标题 作者 时间 类型 操作
An integrated approach for machine-learning-based system identification of dynamical systems under control: application towards the model predictive control of a highly nonlinear reactor system
期刊论文
Identification of pollution sources in rivers using a hydrodynamic diffusion wave model and improved
期刊论文
Blind identification of threshold auto-regressive model for machine fault diagnosis
LI Zhinong, HE Yongyong, CHU Fulei, WU Zhaotong
期刊论文
Finite element model updating of a large structure using multi-setup stochastic subspace identification
Reza KHADEMI-ZAHEDI, Pouyan ALIMOURI
期刊论文
Kinematic Model Building and Servo Parameter Identification of 3-HSS Parallel Mechanism
YANG Zhi-yong, WU Jiang, HUANG Tian, NI Yan-bing
期刊论文
The study of hybrid model identification, computation analysis and fault location for nonlinear dynamic
XIE Hong, HE Yi-gang, ZENG Guan-da
期刊论文
Identification of structural parameters and boundary conditions using a minimum number of measurement
Ali KARIMPOUR, Salam RAHMATALLA
期刊论文
Variable stiffness and damping magnetorheological isolator
Yang ZHOU, Xingyu WANG, Xianzhou ZHANG, Weihua LI
期刊论文
General expression for linear and nonlinear time series models
Ren HUANG, Feiyun XU, Ruwen CHEN
期刊论文