2011 IEEE International Conference on Control Applications (CCA)最新文献_第8页

Eulerian formulation of a drillstring constrained inside a curved borehole 弯曲井眼内约束钻柱的欧拉公式

2011 IEEE International Conference on Control Applications (CCA) Pub Date : 2011-10-13 DOI: 10.1109/CCA.2011.6044413

Vincent Denoel, E. Detournay

{"title":"Eulerian formulation of a drillstring constrained inside a curved borehole","authors":"Vincent Denoel, E. Detournay","doi":"10.1109/CCA.2011.6044413","DOIUrl":"https://doi.org/10.1109/CCA.2011.6044413","url":null,"abstract":"We address the problem of computing the deformed configuration of a drillstring, constrained to deform inside a curved borehole. This problem is encountered in applications such as torque-and-drag and directional drilling. In contrast to the traditional Lagrangian approach, the deformed drillstring is described by means of the distance from the borehole axis, in terms of the curvilinear coordinate defined along the borehole. This model is further implemented within a segmentation algorithm — where the borehole and the drillstring are divided into segments limited by contacts, which interestingly transforms the problem into a sequence of analogous auxiliary problems. This Eulerian view of the drillstring flow into the borehole resolves in one stroke a series of issues that afflict the classical Lagrangian approach: (i) the contact detection is reduced to checking whether a threshold on the distance function is violated, (ii) isoperimetric conditions are transformed into regular boundary conditions, instead of being treated as external integral constraints, (iii) the method yields a well-conditioned set of equations that does not degenerate with decreasing flexural rigidity of the drillstring and/or decreasing clearance between the drillstring and the borehole. Theoretical developments related to this Eulerian formulation of the drillstring are presented, along with an example illustrating the advantages of this approach.","PeriodicalId":208713,"journal":{"name":"2011 IEEE International Conference on Control Applications (CCA)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129552716","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

Reduced-order active disturbance rejection control for induction motors 感应电动机的降阶自抗扰控制

2011 IEEE International Conference on Control Applications (CCA) Pub Date : 2011-10-13 DOI: 10.1109/CCA.2011.6044421

Q. Zheng, Kiran K. Chedella, Weifeng Xu, Liying Wu

引用次数: 12

An online model-based fault diagnosis scheme for HVAC systems 一种基于模型的HVAC系统在线故障诊断方案

2011 IEEE International Conference on Control Applications (CCA) Pub Date : 2011-10-13 DOI: 10.1109/CCA.2011.6044486

Balaje T. Thumati, Miles A. Feinstein, J. Fonda, Alfred Turnbull, Fay J. Weaver, Mark E. Calkins, S. Jagannathan

{"title":"An online model-based fault diagnosis scheme for HVAC systems","authors":"Balaje T. Thumati, Miles A. Feinstein, J. Fonda, Alfred Turnbull, Fay J. Weaver, Mark E. Calkins, S. Jagannathan","doi":"10.1109/CCA.2011.6044486","DOIUrl":"https://doi.org/10.1109/CCA.2011.6044486","url":null,"abstract":"In this paper, a model based fault detection and isolation (FDI) scheme with online fault learning capabilities is proposed for HVAC systems. An observer comprising of an online approximator in discrete-time (OLAD) and a robust term is used for detection. A fault is detected if the generated detection residual, which is defined as the error between the observer outputs and HVAC system states, exceeds an apriori chosen threshold. The OLAD term in the FD observer learns the fault dynamics online while the robust term guarantees asymptotic estimation of the system states. Subsequent to detection, a fault isolation observer, which comprises of the model of fault functions and another robust term, is initiated to identify the root cause. A fault is identified if the isolation residual converges to zero, where the residual is obtained by comparing outputs of the isolation observer and the system. Additionally, we consider different fault scenarios in the system such as single or simultaneous multiple faults. Analytical results for the FDI scheme guarantee the robustness and stability of the proposed scheme. Finally, a simulation example is used to demonstrate the proposed FDI scheme.","PeriodicalId":208713,"journal":{"name":"2011 IEEE International Conference on Control Applications (CCA)","volume":"44 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120900280","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: 21

Applications of linear Hall-effect sensors on angular measurement 线性霍尔效应传感器在角度测量中的应用

2011 IEEE International Conference on Control Applications (CCA) Pub Date : 2011-10-13 DOI: 10.1109/CCA.2011.6044465

Yun-Yao Lee, R. Wu, S. T. Xu

引用次数: 24

Hardware-in-the-loop simulation as a stage of plasma control system model-based design in tokamaks: A test case 硬件在环仿真作为托卡马克等离子体控制系统模型设计的一个阶段:一个测试用例

2011 IEEE International Conference on Control Applications (CCA) Pub Date : 2011-10-13 DOI: 10.1109/CCA.2011.6044501

Y. Mitrishkin, A. Efremov, S. M. Zenkov, I. S. Sushin, V. Dokuka, R. Khayrutdinov

{"title":"Hardware-in-the-loop simulation as a stage of plasma control system model-based design in tokamaks: A test case","authors":"Y. Mitrishkin, A. Efremov, S. M. Zenkov, I. S. Sushin, V. Dokuka, R. Khayrutdinov","doi":"10.1109/CCA.2011.6044501","DOIUrl":"https://doi.org/10.1109/CCA.2011.6044501","url":null,"abstract":"The paper is devoted to a hardware-in-the-loop simulation stage in the whole cycle of tokamak plasma control system design starting from practical needs and challenges and ending up in applications of developed control systems deployed in real world plants to achieve desirable objectives. Control problems of tokamak plasmas are described. The hardware-in-the-loop test case simulation is implemented into the Test Bed which consists of target PCs for modeling MIMO plant and controller on real-time operating system xPC Target from MathWorks and a workstation (Host PC) with MATLAB/Simulink development environment. This environment allows to automatically generate and compile plant and controller codes with Real-Time Workshop and to upload compiled programs to the target PCs. The raw Ethernet is used to connect the target PCs to each other. Two plasma shape and current MIMO H∞ control systems were designed and simulated on the Test Bed specifically for tokamaks T-15MD and ITER on linear plasma models obtained from nonlinear plasma physics DINA code on plasma current flat-top phase. The real time hardware-in-the-loop simulation results are presented for both tokamaks when minor disruptions occur.","PeriodicalId":208713,"journal":{"name":"2011 IEEE International Conference on Control Applications (CCA)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115320227","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

Model-based analysis and control of axial and torsional stick-slip oscillations in drilling systems 钻井系统轴向和扭转粘滑振荡的模型分析与控制

2011 IEEE International Conference on Control Applications (CCA) Pub Date : 2011-10-13 DOI: 10.1109/CCA.2011.6044505

B. Besselink, N. Wouw, H. Nijmeijer

引用次数: 10

A leg-wheel robot-based approach to the solution of flipper-track robot kinematics 基于腿轮机器人的鳍状履带机器人运动学求解方法

2011 IEEE International Conference on Control Applications (CCA) Pub Date : 2011-10-13 DOI: 10.1109/CCA.2011.6044375

Alan Mutka, Z. Kovačić

引用次数: 20

Fast predictive control of linear, time-invariant systems using an algorithm based on the fast gradient method and augmented Lagrange multipliers 基于快速梯度法和增广拉格朗日乘子的线性定常系统的快速预测控制

2011 IEEE International Conference on Control Applications (CCA) Pub Date : 2011-10-13 DOI: 10.1109/CCA.2011.6044410

M. Kögel, R. Findeisen

引用次数: 16

Determination of all stabilizing analog and digital PID controllers 确定所有稳定的模拟和数字PID控制器

2011 IEEE International Conference on Control Applications (CCA) Pub Date : 2011-10-13 DOI: 10.1109/CCA.2011.6044430

T. Emami, J. Watkins, Tae-bong Lee

{"title":"Determination of all stabilizing analog and digital PID controllers","authors":"T. Emami, J. Watkins, Tae-bong Lee","doi":"10.1109/CCA.2011.6044430","DOIUrl":"https://doi.org/10.1109/CCA.2011.6044430","url":null,"abstract":"In this paper, a unified approach is introduced for finding the stability boundary and the number of unstable poles in the integral derivative (ID) plane for continuous-time or discrete-time PID controllers. The ID plane is particularly important because in this plane it is easier than in the PI or PD planes to determine the entire stability region. These problems can be solved by finding all achievable PID controllers that stabilize the closed-loop polynomial of a single-input single-output (SISO) linear time invariant (LTI) system. This method is used to predict the number of unstable poles of the closed-loop system in any region of the parameter space of a PID controller. The delta operator is used to describe the controllers because it provides not only numerical properties superior to the discrete-time shift operator, but also converges to the continuous-time case as the sampling period approaches zero. A key advantage of this approach is that the stability boundary can be found when only the frequency response and not the parameters of the plant transfer function are known. A unified approach allows us to use the same procedure for finding the continuous-time or discrete-time stability region and the number of unstable poles of the closed-loop system.","PeriodicalId":208713,"journal":{"name":"2011 IEEE International Conference on Control Applications (CCA)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117337721","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: 8

Passive fault tolerant control of piecewise affine systems with reference tracking and input constraints 带参考跟踪和输入约束的分段仿射系统的被动容错控制

2011 IEEE International Conference on Control Applications (CCA) Pub Date : 2011-10-13 DOI: 10.1109/CCA.2011.6044441

M. Gholami, V. Cocquempot, H. Schiøler, Thomas Bak

引用次数: 6