IFAC Proceedings Volumes最新文献_第6页

Computing Instantaneous Throughput For Spatially Constrained Aiming Tasks 计算空间受限瞄准任务的瞬时吞吐量

IFAC Proceedings Volumes Pub Date : 2014-01-01 DOI: 10.3182/20140824-6-ZA-1003.01696

J. N. Shelton, G. Chiu

{"title":"Computing Instantaneous Throughput For Spatially Constrained Aiming Tasks","authors":"J. N. Shelton, G. Chiu","doi":"10.3182/20140824-6-ZA-1003.01696","DOIUrl":"https://doi.org/10.3182/20140824-6-ZA-1003.01696","url":null,"abstract":"Abstract Motor throughput is a standard measure of how rapidly information can be transmitted through an input device (such as a mouse or wand) by a human user carrying out point-to-point movement (also known as a Fitts' task.) As low-cost motion tracking systems become more prevalent, engineers are presented with increasing opportunities to control operations using hand gestures. However, accurate analysis of motor throughput in such cases may be difficult, as muscle tremors may prevent midair motions from coming to an absolute stop, and visual obstructions may prevent endpoint data from being reliably captured. A lack of accurate temporal and spatial endpoint information precludes any determination of motor throughput. Inspired by Fitts' information channel model, we derive a measure of instantaneous motor throughput. Observation of this instantaneous measure demonstrates how the traditional measure of information bandwidth, Fitts' motor throughput, emerges during the course of an aimed movement. Further, an experimental study demonstrates that instantaneous throughput (ITP) profiles exhibit a common shape when plotted against normalized distance. We select the moment of peak variance to be the most convenient landmark along the ITP trajectory for computing an overall throughput value, and demonstrate that this new method compares favorably with traditional throughput measures.","PeriodicalId":13260,"journal":{"name":"IFAC Proceedings Volumes","volume":"18 1","pages":"7208-7213"},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74382998","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: 1

From Linear to Nonlinear Model Predictive Control of a Building 从线性模型到非线性模型的建筑物预测控制

IFAC Proceedings Volumes Pub Date : 2014-01-01 DOI: 10.3182/20140824-6-ZA-1003.02783

Matej Pčolka , Eva Žáčeková , Rush Robinett , Sergej Čelikovský , Michael Sebek

{"title":"From Linear to Nonlinear Model Predictive Control of a Building","authors":"Matej Pčolka , Eva Žáčeková , Rush Robinett , Sergej Čelikovský , Michael Sebek","doi":"10.3182/20140824-6-ZA-1003.02783","DOIUrl":"10.3182/20140824-6-ZA-1003.02783","url":null,"abstract":"<div><p>In the building climate control area, the linear model predictive control (LMPC)—nowadays considered a mature technique—benefits from the fact that the resulting optimization task is convex (thus easily and quickly solvable). On the other hand, while nonlinear model predictive control (NMPC) using a more detailed nonlinear model of a building takes advantage of its more accurate predictions and the fact that it attacks the optimization task more directly, it requires more involved ways of solving the non-convex optimization problem. In this paper, the gap between LMPC and NMPC is bridged by introducing several variants of linear time-varying model predictive controller (LTVMPC). Making use of linear time-varying model of the controlled building, LTVMPC obtains predictions which are closer to reality than those of linear time invariant model while still keeping the optimization task convex and less computationally demanding than in the case of NMPC. The concept of LTVMPC is verified on a set of numerical experiments performed using a high fidelity model created in a building simulation environment and compared to the previously mentioned alternatives (LMPC and NMPC) looking at both the control performance and the computational requirements.</p></div>","PeriodicalId":13260,"journal":{"name":"IFAC Proceedings Volumes","volume":"47 3","pages":"Pages 587-592"},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.3182/20140824-6-ZA-1003.02783","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74482852","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: 6

Structured optimisation dynamics for robust triple mode predictive control 鲁棒三模预测控制的结构优化动力学

IFAC Proceedings Volumes Pub Date : 2014-01-01 DOI: 10.3182/20140824-6-ZA-1003.00903

B. Khan, J. Rossiter

引用次数: 0

Recognition of Human Body Movements Trajectory Based on the Three-Dimensional Depth Data 基于三维深度数据的人体运动轨迹识别

IFAC Proceedings Volumes Pub Date : 2014-01-01 DOI: 10.3182/20140824-6-ZA-1003.00532

Zheng Chang, Qing Shen, X. Ban, Jing Guo

引用次数: 2

Switched model predictive control for networked control systems with time delays and packet disordering 具有时延和包无序的网络控制系统的交换模型预测控制

IFAC Proceedings Volumes Pub Date : 2014-01-01 DOI: 10.3182/20140824-6-ZA-1003.01116

Andong Liu, Li Yu, Wen-an Zhang

引用次数: 4

Evaluation of Aggregators for Integration of Large-scale Consumers in Smart Grid 智能电网中大规模用户集成的聚合器评价

IFAC Proceedings Volumes Pub Date : 2014-01-01 DOI: 10.3182/20140824-6-ZA-1003.00601

Samira Rahnama, S. E. Shafiei, J. Stoustrup, H. Rasmussen, J. Bendtsen

{"title":"Evaluation of Aggregators for Integration of Large-scale Consumers in Smart Grid","authors":"Samira Rahnama, S. E. Shafiei, J. Stoustrup, H. Rasmussen, J. Bendtsen","doi":"10.3182/20140824-6-ZA-1003.00601","DOIUrl":"https://doi.org/10.3182/20140824-6-ZA-1003.00601","url":null,"abstract":"Abstract Utilization of consumers to mitigate the impact of increasing renewable resources on power systems is one of the visions of future smart grids. Flexible consumers are consumers who can change their consumption patterns in such a way as to help the grid to tackle the balancing problem. In previous work, we proposed a hierarchical structure to provide regulating power to the grid by just utilizing the consumption units. The main focus of that work was on designing a centralized controller, a so-called aggregator, which is responsible for aggregating the flexibilities in an optimal way. To accomplish the optimization, the aggregator requires a model which describes the behavior of each consumption unit. These models should be sufficiently simple to be used in the optimization task. However, simple models might not capture all dynamics and features of the real system. In this paper, we will evaluate the proposed setup to understand to what extent the utilization of simplified models can lead to reasonable results. To this end, we will connect the aggregator to a complex and verified model of an actual supermarket refrigeration system which enables us to investigate the closed-loop behavior of the whole set-up.","PeriodicalId":13260,"journal":{"name":"IFAC Proceedings Volumes","volume":"7 1","pages":"1879-1885"},"PeriodicalIF":0.0,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75253418","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: 20

Finite Element Approximation and Input Parameterization for the Optimal Control of Current Profiles in Tokamak Plasmas 托卡马克等离子体电流分布最优控制的有限元逼近和输入参数化

IFAC Proceedings Volumes Pub Date : 2014-01-01 DOI: 10.3182/20140824-6-ZA-1003.00429

Zhigang Ren, Chao Xu, Qun Lin, R. Loxton, K. Teo, Jian Chu

引用次数: 2

Analysis of scale invariance property applying homogeneity 应用均匀性分析尺度不变性

IFAC Proceedings Volumes Pub Date : 2014-01-01 DOI: 10.3182/20140824-6-ZA-1003.02370

E. Bernuau, D. Efimov, W. Perruquetti

引用次数: 1

Searching force-closure optimal grasps of articulated 2D objects with n links 搜索具有n个连杆的铰接二维物体的力闭合最佳抓取

IFAC Proceedings Volumes Pub Date : 2014-01-01 DOI: 10.3182/20140824-6-ZA-1003.01018

Noe Alvarado Tovar, R. Suárez

引用次数: 5

Simultaneous State and Fault Estimation for Descriptor Systems using an Augmented PD Observer 基于增广PD观测器的广义系统同步状态和故障估计

IFAC Proceedings Volumes Pub Date : 2014-01-01 DOI: 10.3182/20140824-6-ZA-1003.01383

F. Shi, R. Patton

引用次数: 23