Proceedings of the ... American Control Conference. American Control Conference最新文献_第5页

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":"2017 ","pages":"4851-4857"},"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":"2016 ","pages":"1271-1276"},"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":"2016 ","pages":"1295-1300"},"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

Velocity-weighting to prevent controller-induced hypoglycemia in MPC of an artificial pancreas to treat T1DM. 速度加权预防控制者在治疗T1DM的人工胰腺MPC中引起的低血糖。

Proceedings of the ... American Control Conference. American Control Conference Pub Date : 2015-07-01 Epub Date: 2015-07-30 DOI: 10.1109/ACC.2015.7170967

Ravi Gondhalekar, Eyal Dassau, Francis J Doyle

{"title":"Velocity-weighting to prevent controller-induced hypoglycemia in MPC of an artificial pancreas to treat T1DM.","authors":"Ravi Gondhalekar, Eyal Dassau, Francis J Doyle","doi":"10.1109/ACC.2015.7170967","DOIUrl":"https://doi.org/10.1109/ACC.2015.7170967","url":null,"abstract":"The design of a Model Predictive Control (MPC) strategy for the closed-loop operation of an Artificial Pancreas (AP) to treat type 1 diabetes mellitus is considered. The contribution of this paper is to propose a velocity-weighting mechanism, within an MPC problem's cost function, that facilitates penalizing predicted hyperglycemic blood-glucose excursions based on the predicted blood-glucose levels' rates of change. The method provides the control designer some freedom for independently shaping the AP's uphill versus downhill responses to hyperglycemic excursions; of particular emphasis in this paper is the downhill response. The proposal aims to tackle the dangerous issue of controller-induced hypoglycemia following large hyperglycemic excursions, e.g., after meals, that results in part due to the large delays of subcutaneous glucose sensing and subcutaneous insulin infusion - the case considered here. The efficacy of the proposed approach is demonstrated using the University of Virginia/Padova metabolic simulator with both unannounced and announced meal scenarios.","PeriodicalId":74510,"journal":{"name":"Proceedings of the ... American Control Conference. American Control Conference","volume":"2015 ","pages":"1635-1640"},"PeriodicalIF":0.0,"publicationDate":"2015-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/ACC.2015.7170967","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"34975380","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: 19

Position estimation in electro-magnetic actuators using a modified discrete time class A/B model reference approach 基于改进的离散时间a /B类模型参考方法的电磁执行器位置估计

Proceedings of the ... American Control Conference. American Control Conference Pub Date : 2014-06-04 DOI: 10.1109/ACC.2014.6858841

Florian Straußberger, M. Schwab, Tristan Braun, J. Reuter

引用次数: 10

Greetings from the AACC President 来自AACC主席的问候

Proceedings of the ... American Control Conference. American Control Conference Pub Date : 2014-06-04 DOI: 10.1109/ACC.2014.6858566

T. Samad

{"title":"Greetings from the AACC President","authors":"T. Samad","doi":"10.1109/ACC.2014.6858566","DOIUrl":"https://doi.org/10.1109/ACC.2014.6858566","url":null,"abstract":"all participants to the 2014 American Control Conference. It’s been over three decades since the first ACC was held (in Arlington, Virginia, 1982) and since then the annual conference has become an established, selective international event covering all aspects of research and development in control systems. ACCs now attract around 1,300 participants representing academia (including graduate students), industry, and government organizations. Only a slim majority of the attendees are from the United States. The centerpiece of the conference is the technical program, and this year’s ACC will feature about 1,000 presentations on developments in diverse areas of control, theoretical as well as applied. Also on offer are pre-conference workshops, special and “micro” sessions on technical and other topics, exhibits and recruitment opportunities, and the AACC Awards Ceremony. The action spills over into the hallways and break areas too, where professional connections and friendships are made and renewed, collaboration prospects broached and firmed up, and much “catching up” undertaken. It’s hard to do any of these things well within the e-cocoons in which we seem to spend so much of our work (and personal) lives you’ll be glad you came!","PeriodicalId":74510,"journal":{"name":"Proceedings of the ... American Control Conference. American Control Conference","volume":"1 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2014-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88875483","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: 0

Greetings and thanks from the general chair 主席的问候和感谢

Proceedings of the ... American Control Conference. American Control Conference Pub Date : 2014-06-04 DOI: 10.1109/ACC.2014.6858578

D. Tilbury

引用次数: 0