# IEEE Transactions on Control Systems Technology

## Filter Results

Displaying Results 1 - 25 of 53

Publication Year: 2013, Page(s):C1 - C4
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• ### IEEE Transactions on Control Systems Technology publication information

Publication Year: 2013, Page(s): C2
| PDF (138 KB)
• ### Editorial To Tame the Wind: Advanced Control Applications in Wind Energy

Publication Year: 2013, Page(s):1045 - 1048
Cited by:  Papers (2)
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• ### Tower Vibration Control of Active Stall Wind Turbines

Publication Year: 2013, Page(s):1049 - 1066
Cited by:  Papers (5)  |  Patents (1)
| | PDF (2005 KB) | HTML

Negative aerodynamic damping amplifies tower vibrations on turbines with stall rotors. Under certain conditions, these vibrations may rise to a level that causes a shutdown. Active stall turbines have a pitch system, and the objective of the work was to develop pitch control algorithms, which would minimize the probability of tower vibrations rising to the shutdown level. The results of a root cau... View full abstract»

• ### Validation of Individual Pitch Control by Field Tests on Two- and Three-Bladed Wind Turbines

Publication Year: 2013, Page(s):1067 - 1078
Cited by:  Papers (25)
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Further improvements in the cost-effectiveness of wind turbines drive designers toward larger, lighter, and more flexible structures, in which more intelligent control systems play an important part in actively reducing the applied structural loads. These improvements also help to eliminate the need for wind turbines to simply withstand the full force of the applied loads through the use of strong... View full abstract»

• ### $ell_{1}$-Optimal Control of Large Wind Turbines

Publication Year: 2013, Page(s):1079 - 1089
Cited by:  Papers (9)
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We present an ℓ1-control scheme for multivariable pitch control in full load region. Two decoupled linear time-invariant models are derived using Coleman transformation and gain scheduling to design collective and individual pitch controllers independently. Individual pitch control is used to decrease the blade root bending moment. A new ℓ1-control setup for col... View full abstract»

• ### Offshore Wind Turbine Load Reduction Employing Optimal Passive Tuned Mass Damping Systems

Publication Year: 2013, Page(s):1090 - 1104
Cited by:  Papers (17)
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Offshore wind turbines can capture the high-quality offshore wind resource but suffer from increased loading from waves and ice. Reducing these loads through structural control techniques has the potential to be an economically viable solution. Both fixed-bottom and floating substructures are considered in this paper, which will investigate a fixed-bottom monopile as well as a barge, spar buoy, an... View full abstract»

• ### Frequency-Weighted Model Predictive Control of Trailing Edge Flaps on a Wind Turbine Blade

Publication Year: 2013, Page(s):1105 - 1116
Cited by:  Papers (15)
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This paper presents the load reduction achieved with trailing edge flaps during a full-scale test on a Vestas V27 wind turbine. The trailing edge flap controller is a frequency-weighted linear model predictive control (MPC) where the quadratic cost consists of costs on the zero-phase filtered flapwise blade root moment and trailing edge flap deflection. Frequency-weighted MPC is chosen for its abi... View full abstract»

• ### Combined Feedback–Feedforward Control of Wind Turbines Using State-Constrained Model Predictive Control

Publication Year: 2013, Page(s):1117 - 1128
Cited by:  Papers (22)  |  Patents (3)
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An application of model predictive control (MPC) to the wind turbine collective pitch and torque control problem in full-load operation is presented. The applied controller is able to include upstream wind speed information, e.g., from light detection and ranging measurements. Furthermore, a method is presented to include constraints on the turbine states in the problem formulation, such as on rot... View full abstract»

• ### Comparison of Strategies for Enhancing Energy Capture and Reducing Loads Using LIDAR and Feedforward Control

Publication Year: 2013, Page(s):1129 - 1142
Cited by:  Papers (17)
| | PDF (1962 KB) | HTML

In this paper, we investigate strategies to enhance turbine energy capture and mitigate fatigue loads using pulsed light detection and ranging (LIDAR) system-enabled torque control strategies. To enhance energy capture when a turbine is operating below rated wind speed, three advanced LIDAR-enabled torque controllers are proposed: the disturbance tracking control (DTC) augmented with LIDAR, the op... View full abstract»

• ### Design Tradeoffs of Wind Turbine Preview Control

Publication Year: 2013, Page(s):1143 - 1154
Cited by:  Papers (12)
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Recent work demonstrated the benefits of preview wind measurements for turbine control. This paper investigates the basic design tradeoffs between turbine performance, preview time, and pitch actuator rate limits. A Region 3 rotor-speed tracking problem is formulated in continuous-time as an optimal control problem using a simple one-state rigid body turbine model. The exact analytical solution to... View full abstract»

• ### Estimation of Rotor Effective Wind Speed: A Comparison

Publication Year: 2013, Page(s):1155 - 1167
Cited by:  Papers (47)
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Modern wind turbine controllers use wind speed information to improve power production and reduce loads on the turbine components. The turbine top wind speed measurement is unfortunately imprecise and not a good representative of the rotor effective wind speed. Consequently, many different model-based algorithms have been proposed that are able to estimate the wind speed using common turbine measu... View full abstract»

• ### Fault-Tolerant Control of Wind Turbines: A Benchmark Model

Publication Year: 2013, Page(s):1168 - 1182
Cited by:  Papers (116)
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This paper presents a test benchmark model for the evaluation of fault detection and accommodation schemes. This benchmark model deals with the wind turbine on a system level, and it includes sensor, actuator, and system faults, namely faults in the pitch system, the drive train, the generator, and the converter system. Since it is a system-level model, converter and pitch system models are simpli... View full abstract»

• ### LPV Identification of Wind Turbine Rotor Vibrational Dynamics Using Periodic Disturbance Basis Functions

Publication Year: 2013, Page(s):1183 - 1190
Cited by:  Papers (8)
| | PDF (584 KB) | HTML

This brief presents an identification experiment performed on the coupled dynamics of the edgewise bending vibrations of the rotor blades and the in-plane motion of the drivetrain of three-bladed wind turbines. These dynamics vary with rotor speed, and are subject to periodic wind flow disturbances. This brief demonstrates that this time-varying behavior can be captured in a linear parameter-varyi... View full abstract»

• ### On Using Wind Speed Preview to Reduce Wind Turbine Tower Oscillations

Publication Year: 2013, Page(s):1191 - 1198
Cited by:  Papers (14)
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We investigate the potential of using previewed wind speed measurements for damping wind turbine fore-aft tower oscillations. Using recent results on continuous-time H2 preview control, we develop a numerically efficient framework for the feedforward controller synthesis. One of the major benefits of the proposed framework is that it allows us to account for measurement distortio... View full abstract»

• ### Robust Control of Variable-Speed Wind Turbines Based on an Aerodynamic Torque Observer

Publication Year: 2013, Page(s):1199 - 1206
Cited by:  Papers (29)
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This paper focuses on a robust power generation control strategy for a variable-speed wind energy conversion system based on a permanent magnet synchronous generator. The proposed control strategy combines a robust observer of the aerodynamic torque with a sliding mode-based field-oriented control strategy. The robust vanishing of the observation error and the tracking error is proved. Reported nu... View full abstract»

• ### A Model-Free Approach to Wind Farm Control Using Game Theoretic Methods

Publication Year: 2013, Page(s):1207 - 1214
Cited by:  Papers (76)
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This brief explores the applicability of recent results in game theory and cooperative control to the problem of optimizing energy production in wind farms. One such result is a model-free control strategy that is completely decentralized and leads to efficient system behavior in virtually any distributed system. We demonstrate that this learning rule can provably maximize energy production in win... View full abstract»

• ### Airborne Wind Energy Based on Dual Airfoils

Publication Year: 2013, Page(s):1215 - 1222
Cited by:  Papers (14)
| | PDF (465 KB) | HTML

The airborne wind energy (AWE) paradigm proposes to generate energy by flying a tethered airfoil across the wind flow at a high velocity. Although AWE enables flight in higher altitude and stronger wind layers, the extra drag generated by the tether motion imposes a significant limit to the overall system efficiency. To address this issue, two airfoils with a shared tether can reduce overall syste... View full abstract»

• ### Multiagent Information Fusion and Cooperative Control in Target Search

Publication Year: 2013, Page(s):1223 - 1235
Cited by:  Papers (32)
| | PDF (695 KB) | HTML

This paper addresses cooperative search for multiple stationary ground targets by a group of unmanned aerial vehicles with limited sensing and communication capabilities. The whole surveillance region is partitioned into cells where each cell is associated with a probability of target existence within the cell, which constitutes a probability map for the whole region. Each agent keeps an individua... View full abstract»

• ### Vehicle Yaw Stability Control by Coordinated Active Front Steering and Differential Braking in the Tire Sideslip Angles Domain

Publication Year: 2013, Page(s):1236 - 1248
Cited by:  Papers (75)
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Vehicle active safety receives ever increasing attention in the attempt to achieve zero accidents on the road. In this paper, we investigate a control architecture that has the potential of improving yaw stability control by achieving faster convergence and reduced impact on the longitudinal dynamics. We consider a system where active front steering and differential braking are available and propo... View full abstract»

• ### Covariance and State Estimation of Weakly Observable Systems: Application to Polymerization Processes

Publication Year: 2013, Page(s):1249 - 1257
Cited by:  Papers (14)
| | PDF (598 KB) | HTML

Physical models for polymerization may be overly complex considering the available measurements, and they may contain many unobservable and weakly observable modes. Overly complex structures lead to ill-conditioned or singular problems for disturbance variance estimation. Ill conditioning leads to unrealistic data demands for reliable covariance estimates and state estimates. The goal of this pape... View full abstract»

• ### Model Predictive Control for Vehicle Stabilization at the Limits of Handling

Publication Year: 2013, Page(s):1258 - 1269
Cited by:  Papers (63)
| | PDF (1038 KB) | HTML

Recent developments in vehicle steering systems offer new opportunities to measure the steering torque and reliably estimate the vehicle sideslip and the tire-road friction coefficient. This paper presents an approach to vehicle stabilization that leverages these estimates to define state boundaries that exclude unstable vehicle dynamics and utilizes a model predictive envelope controller to bound... View full abstract»

• ### Control Coordination Within a VSC HVDC Link for Power Oscillation Damping: A Robust Decentralized Approach Using Homotopy

Publication Year: 2013, Page(s):1270 - 1279
Cited by:  Papers (16)
| | PDF (2821 KB) | HTML

Power oscillations can be damped effectively through modulation of both active and reactive power of a voltage source converter based high voltage direct current link. The challenge, however, is how to coordinate the control action properly at the two ends of the link without using a centralized control scheme, which requires fast communication of control signals to remote actuator (converters) si... View full abstract»

• ### Guidance and Control for Planetary Landing: Flatness-Based Approach

Publication Year: 2013, Page(s):1280 - 1294
Cited by:  Papers (5)
| | PDF (2109 KB) | HTML

The guidance, navigation, and control problems for autonomous planetary entry descent and landing pose a number of interesting challenges. In this paper, the guidance and control problems for the descent phase are considered, and an approach based on the flatness property of the descent equations is proposed. A flat reformulation of the 2-D descent equations is presented and flatness-based analyti... View full abstract»

• ### Suboptimal Cold Start Strategies for Spark Ignition Engines

Publication Year: 2013, Page(s):1295 - 1308
Cited by:  Papers (2)
| | PDF (917 KB) | HTML

The dramatic increase of vehicle use in urban situations, coupled with the short average length of the subsequent journey, leads to a large proportion of engine operation happening under cold start conditions. The cold start results in larger fuel consumption and higher emissions relative to a fully warmed engine, and ultimately the minimization of both of these has led to intense and complex cali... View full abstract»

## Aims & Scope

The IEEE Control Systems Society publishes high-quality papers on technological advances in the design, realization, and operation of control systems.

Full Aims & Scope

## Meet Our Editors

Editor-in-Chief
Andrea Serrani
Department of Electrical and Computer Engineering
The Ohio State University
412 Dreese labs
2015 Neil Ave
Columbus, OH - USA
phone: 614 292 4976
email: serrani.1@osu.edu