Proceedings of the ... American Control Conference. American Control Conference最新文献_第4页

Welcome to the ACC2018 欢迎来到ACC2018

Proceedings of the ... American Control Conference. American Control Conference Pub Date : 2018-06-01 DOI: 10.23919/ACC.2018.8430816

R. Braatz, J. Berg, Zongli Lin, F. Allgöwer

引用次数: 0

Experiment Design for Early Molecular Events in HIV Infection. HIV感染早期分子事件的实验设计

Proceedings of the ... American Control Conference. American Control Conference Pub Date : 2017-05-01 Epub Date: 2017-07-03 DOI: 10.23919/ACC.2017.7962941

Aditya Jagarapu, LaMont Cannon, Ryan Zurakowski

{"title":"Experiment Design for Early Molecular Events in HIV Infection.","authors":"Aditya Jagarapu, LaMont Cannon, Ryan Zurakowski","doi":"10.23919/ACC.2017.7962941","DOIUrl":"https://doi.org/10.23919/ACC.2017.7962941","url":null,"abstract":"The recent introduction of integrase inhibitors to the HIV antiviral repertoire permits us to create in vitro experiments that reliably terminate HIV infection at the point of chromosomal integration. This allows us to isolate the dynamics of a single round of infection, without needing to account for the influence of multiple overlapping rounds of infection. By measuring the various nucleic acid concentrations in a population of infected target cells at multiple time points, we can infer the rates of these molecular events with great accuracy, which allows us to compare the rates between target cells with different functional phenotypes. This information will help in understanding the behavior of the various populations of reservoir cells such as active and quiescent T-cells which maintain HIV infection in treated patients. In this paper, we introduce a family of models of the early molecular events in HIV infection, with either linear dynamics or age-structured delays at each step. We introduce an experimental design metric based on the delta AIC (Akaike Information Criteria) between a model fit for simulated data from a matching model vs a mismatched model, which allows us to determine a candidate experiment design's ability to discriminate between models. Using parameters values drawn from experimentally-derived priors corrupted with appropriate measurement noise, we confirm that a proposed sampling schedule at different time points allows us to consistently discriminate between candidate models.","PeriodicalId":74510,"journal":{"name":"Proceedings of the ... American Control Conference. American Control Conference","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.23919/ACC.2017.7962941","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"35735699","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Soft sensor based estimation of process parameters and states with Hybridized Grey Wolf Optimizer 基于软测量的过程参数和状态估计与灰太狼杂交优化

Proceedings of the ... American Control Conference. American Control Conference Pub Date : 2017-05-01 DOI: 10.23919/ACC.2017.7963228

S. Sankaranarayanan, N. Sivakumaran, G. Swaminathan, T. Radhakrishnan

{"title":"Soft sensor based estimation of process parameters and states with Hybridized Grey Wolf Optimizer","authors":"S. Sankaranarayanan, N. Sivakumaran, G. Swaminathan, T. Radhakrishnan","doi":"10.23919/ACC.2017.7963228","DOIUrl":"https://doi.org/10.23919/ACC.2017.7963228","url":null,"abstract":"Metaheuristics based global optimization technique is one among the state of art in soft sensing applications. The metaheuristic based soft sensor is capable of coping with the stochasticity of the process and as well as the corresponding nonlinearities in the dynamics. In this work, a multi-objective based parameter estimation and soft-sensing of unknown states are carried out for a modified version of Quadruple Tank Process (QTP). The effect of the outlet valve over the dynamics of the process is briefly investigated to emphasize the implication of these parameters in the process. The unknown parameters and unobserved states of the QTP are estimated through a Hybridized Grey Wolf Optimization (HGWO). The HGWO is a metaheuristic based optimization, hybridized with static Kalman Bucy (KB) algorithm. The hybridization is carried out to improve the convergence rate of the existing algorithm in terms of ideal computational cycle and proximity towards the global solution. Performance of the proposed HGWO is compared along with the conventional GWO algorithm. The estimation is executed for QTP operating in Non-Minimum Phase (NMP) mode and the simulated results proves the proposed HGWO based soft sensor provides a better result compared to the GWO algorithm.","PeriodicalId":74510,"journal":{"name":"Proceedings of the ... American Control Conference. American Control Conference","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81551972","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Climate control in greenhouse using intelligent control algorithms 基于智能控制算法的温室气候控制

Proceedings of the ... American Control Conference. American Control Conference Pub Date : 2017-05-01 DOI: 10.23919/ACC.2017.7963065

Revathi Soundiran, T. Radhakrishnan, Sivakumaran Natarajan

{"title":"Climate control in greenhouse using intelligent control algorithms","authors":"Revathi Soundiran, T. Radhakrishnan, Sivakumaran Natarajan","doi":"10.23919/ACC.2017.7963065","DOIUrl":"https://doi.org/10.23919/ACC.2017.7963065","url":null,"abstract":"Greenhouse climate control problem has received considerable attention in agriculture engineering research. The greater part of accomplishing ensured farming within the greenhouse environment is achieved by controlling the temperature and relative humidity. As the result of process dead times and extreme interdependence of these parameters, the control problem is classified to be non-linear and multivariable. With the advances in intelligent control systems, more and more decisions involved in greenhouse control can be automated. Thus, more emphasis can be placed on emulating the abilities of the expert operator. In this paper, intelligent and non-intelligent control techniques for addressing the problem of automated climate control in a greenhouse are investigated. These include proportional-integral-derivative (PID) and Linear-Quadratic regulator (LQR) as a ‘non-intelligent’ technique and fuzzy PID and fuzzy immune PID as ‘intelligent’ technique. The new study is made for implementing the nonlinear fuzzy immune PID controller for greenhouse climate control. This controller has a simple structure and its parameters can be conveniently adjusted. It consists of a PID controller and a basic immune proportional controller in cascaded connection, the nonlinear function of the immune proportional controller is realized using fuzzy reasoning. Thus, controller parameters are adjusted online by the rules of immune feedback controller and fuzzy controller. The simulation results are compared for the effectiveness and applicability to greenhouse environmental problem.","PeriodicalId":74510,"journal":{"name":"Proceedings of the ... American Control Conference. American Control Conference","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82862232","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 15

Towards Total Energy Shaping Control of Lower-Limb Exoskeletons. 下肢外骨骼总能量整形控制研究。

Proceedings of the ... American Control Conference. American Control Conference Pub Date : 2017-05-01 Epub Date: 2017-07-03 DOI: 10.23919/ACC.2017.7963706

Ge Lv, Robert D Gregg

{"title":"Towards Total Energy Shaping Control of Lower-Limb Exoskeletons.","authors":"Ge Lv, Robert D Gregg","doi":"10.23919/ACC.2017.7963706","DOIUrl":"https://doi.org/10.23919/ACC.2017.7963706","url":null,"abstract":"Current robotic exoskeletons enforce fixed reference joint patterns during gait rehabilitation. These control methods aim to replicate normative joint kinematics but do not facilitate learning patient-specific kinematics. Trajectory-free control methods for exoskeletons are required to promote user control over joint kinematics. Our prior work on potential energy shaping provides virtual body-weight support through a trajectory-free control law, but altering only the gravitational forces does not assist the subject in accelerating/decelerating the body forward. Kinetic energy is velocity dependent and thus shaping the kinetic energy in addition to potential energy can yield greater dynamical changes in closed loop. In this paper, we generalize our previous work to achieve underactuated total energy shaping of the human body through a lower-limb exoskeleton. By shaping the fully-actuated part of the body's mass matrix, we satisfy the matching condition for different contact phases and obtain trajectory-free control laws. Simulations of a human-like biped demonstrate speed regulation in addition to body-weight support, indicating the potential clinical value of this control approach.","PeriodicalId":74510,"journal":{"name":"Proceedings of the ... American Control Conference. American Control Conference","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.23919/ACC.2017.7963706","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"35225789","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 11

Semi-physical Identification and State Estimation of Energy Intake for Interventions to Manage Gestational Weight Gain. 半物理识别和状态估计能量摄入干预管理妊娠期体重增加。

Proceedings of the ... American Control Conference. American Control Conference Pub Date : 2016-07-01 Epub Date: 2016-08-01 DOI: 10.1109/ACC.2016.7525092

Penghong Guo, Daniel E Rivera, Danielle S Downs, Jennifer S Savage

{"title":"Semi-physical Identification and State Estimation of Energy Intake for Interventions to Manage Gestational Weight Gain.","authors":"Penghong Guo, Daniel E Rivera, Danielle S Downs, Jennifer S Savage","doi":"10.1109/ACC.2016.7525092","DOIUrl":"10.1109/ACC.2016.7525092","url":null,"abstract":"Excessive gestational weight gain (i.e., weight gain during pregnancy) is a significant public health concern, and has been the recent focus of novel, control systems-based interventions. This paper develops a control-oriented dynamical systems model based on a first-principles energy balance model from the literature, which is evaluated against participant data from a study targeted to obese and overweight pregnant women. The results indicate significant under-reporting of energy intake among the participant population. A series of approaches based on system identification and state estimation are developed in the paper to better understand and characterize the extent of under-reporting; these range from back-calculating energy intake from a closed-form of the energy balance model, to a constrained semi-physical identification approach that estimates the extent of systematic under-reporting in the presence of noise and possibly missing data. Additionally, we describe an adaptive algorithm based on Kalman filtering to estimate energy intake in real-time. The approaches are illustrated with data from both simulated and actual intervention participants.","PeriodicalId":74510,"journal":{"name":"Proceedings of the ... American Control Conference. American Control Conference","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/ACC.2016.7525092","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"34344237","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 13

Effects Of Symmetry On The Structural Controllability Of Neural Networks: A Perspective. 对称性对神经网络结构可控性的影响：透视。

Proceedings of the ... American Control Conference. American Control Conference Pub Date : 2016-07-01 Epub Date: 2016-08-01 DOI: 10.1109/ACC.2016.7526576

Andrew J Whalen, Sean N Brennan, Timothy D Sauer, Steven J Schiff

引用次数: 0

Prospective HIV Clinical Trial Comparison by Expected Kullback-Leibler Divergence. 预期Kullback-Leibler差异对HIV临床试验的前瞻性比较

Proceedings of the ... American Control Conference. American Control Conference Pub Date : 2016-07-01 DOI: 10.1109/ACC.2016.7525096

LaMont Cannon, Cesar Augusto Vargas Garcia, Michael J Piovoso, Ryan Zurakowski

{"title":"Prospective HIV Clinical Trial Comparison by Expected Kullback-Leibler Divergence.","authors":"LaMont Cannon, Cesar Augusto Vargas Garcia, Michael J Piovoso, Ryan Zurakowski","doi":"10.1109/ACC.2016.7525096","DOIUrl":"https://doi.org/10.1109/ACC.2016.7525096","url":null,"abstract":"The sample frequency and volume of blood that can be drawn from a single patient is meticulously restricted under the human subject protection protocols established by an institutional review board (IRB). Consequently, the amount of samples that can be taken during a particular experiment is limited. In order to ensure an effective experiment design, considerations must be taken choosing when to take patient samples. A validated model of HIV-1 viral replication and 2-LTR production is exploited to find sub-optimal sampling schedules that maximize information content of the experiment outcome. This is done through a Forward Stepwise Regression (FSR) process with Kullback Liebler Divergence (KLD) as a selection criterion. Suboptimal schedules are found for an experiment taking four sample points over a possible span of 20 weeks. All schedules found with the FSR process contain significantly more information than both a uniform schedule and a schedule used in a previous experiment with 4 sample points. This work demonstrates the advantages of using KLD as a tool in the experiment design process to increase information content.","PeriodicalId":74510,"journal":{"name":"Proceedings of the ... American Control Conference. American Control Conference","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/ACC.2016.7525096","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"35735698","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

Stabilization of LTI systems by relay feedback with perturbed measurements 带摄动测量的继电器反馈稳定LTI系统

Proceedings of the ... American Control Conference. American Control Conference Pub Date : 2016-01-01 DOI: 10.1109/ACC.2016.7526479

Zohra Kader, C. Fiter, L. Hetel, L. Belkoura

引用次数: 0

Adaptive regulation for motion control of magnetic tape storage systems 磁带存储系统运动控制的自适应调节

Proceedings of the ... American Control Conference. American Control Conference Pub Date : 2015-07-30 DOI: 10.1109/ACC.2015.7171166

R. A. Callafon

引用次数: 0