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# IEEE Transactions on Control Systems Technology

### Early Access Articles

Early Access articles are made available in advance of the final electronic or print versions. Early Access articles are peer reviewed but may not be fully edited. They are fully citable from the moment they appear in IEEE Xplore.

## Filter Results

Displaying Results 1 - 25 of 193
• ### Point-to-Point Iterative Learning Control With Optimal Tracking Time Allocation

Publication Year: 2017, Page(s):1 - 14
| | PDF (3132 KB)

Iterative learning control (ILC) is a high-performance tracking control design method for systems operating in a repetitive manner. This paper proposes a novel design methodology that extends the recently developed point-to-point ILC framework to allow automatic via-point time allocation within a given point-to-point tracking task, leading to significant performance improvements, e.g., energy redu... View full abstract»

• ### Delta Operator-Based Fault Estimation and Fault-Tolerant Model Predictive Control for Steer-By-Wire Systems

Publication Year: 2017, Page(s):1 - 8
| | PDF (958 KB)

A new fault estimation and fault-tolerant model predictive control (MPC) scheme for a Steer-by-Wire (SbW) system based on a delta operator approach is proposed. A fault detection observer in terms of the linear matrix inequalities is constructed by means of delta operator systems to estimate the fault in the SbW systems. An active fault-tolerant MPC based on a delta operator is designed to compens... View full abstract»

• ### Nonlinear Observers for GNSS- and Camera-Aided Inertial Navigation of a Fixed-Wing UAV

Publication Year: 2017, Page(s):1 - 8
| | PDF (2179 KB)

In this paper, exponentially stable nonlinear observers for the estimation of position, velocity, specific force, attitude, and gyro bias of a fixed-wing unmanned aerial vehicle (UAV) are proposed. The sensor suite consists of an inertial measurement unit, a global navigation satellite system receiver, a camera, an altimeter, and, possibly, auxiliary roll and pitch measurements. A first observer i... View full abstract»

• ### Controllability, Observability, and Integrated State Estimation and Control of Networked Battery Systems

Publication Year: 2017, Page(s):1 - 12
| | PDF (2519 KB)

This paper develops an integrated state estimation and control methodology of networked battery systems that require only terminal voltage and current measurements for reduced cost and complexity. Without direct internal voltage/current measurements and individual control on each battery pack in the system, a networked battery system is inherently uncontrollable and unobservable. By employing bypa... View full abstract»

• ### Robust Tuning of Cross-Directional Model Predictive Controllers for Paper-Making Processes

Publication Year: 2017, Page(s):1 - 16
| | PDF (4903 KB)

This paper studies automated tuning of cross-directional model predictive control for industrial paper-making processes under user-specified model parameter uncertainties. Automated parameter tuning algorithms are developed to reduce the variability of the actuator and measurement profiles in the spatial domain and to achieve satisfactory performance in terms of worst case settling times and worst... View full abstract»

• ### Modeling, Control Design, and Combined Plant/Controller Optimization for an Energy-Harvesting Tethered Wing

Publication Year: 2017, Page(s):1 - 13
| | PDF (4078 KB)

This paper presents a combined plant and controller performance analysis and optimization for a tethered rigid wing with on-board rotors, flying in crosswind patterns. Specifically, we use a 3-D model of the tethered wing to assess the influence of critical design parameters on both quality of flight and energy-generation performance, as quantified by the Loyd Factor,' which compares energy-gene... View full abstract»

• ### Predefined-Time Convergence Control for High-Order Integrator Systems Using Time Base Generators

Publication Year: 2017, Page(s):1 - 8
| | PDF (991 KB)

In this brief, we propose a control method for high-order integrator systems that achieves predefined-time convergence, i.e., the system is driven to the origin in a desired settling time that can be set as an explicit parameter of the controller and it is achieved independently of the initial conditions. Our method can be applied to any single-input single-output (SISO) controllable linear system... View full abstract»

• ### Charging Coordination of Plug-In Electric Vehicles in Distribution Networks With Capacity Constrained Feeder Lines

Publication Year: 2017, Page(s):1 - 8
| | PDF (1867 KB)

We study the charging control of plug-in electric vehicles in distribution networks with capacity constrained feeder lines. It is usually challenging to design an effective decentralized method to implement the optimal solution for the formulated constrained optimization problems due to the coupling relationship of charging behaviors on the constrained distribution network system. Alternatively, i... View full abstract»

• ### Flexible Cable-Driven Parallel Manipulator Control: Maintaining Positive Cable Tensions

Publication Year: 2017, Page(s):1 - 10
| | PDF (1487 KB)

In this brief, a planar cable-driven parallel manipulator is controlled using a strictly positive real compensator, cable pretension is explicitly accounted for, and cable slack is avoided. A strictly positive real controller is implemented using actuator saturation prevention techniques and the solution to a linear programming problem to ensure that the cable tensions remain strictly positive. Pr... View full abstract»

• ### Passivity-Based Thermohygrometric Control in Buildings

Publication Year: 2017, Page(s):1 - 12
| | PDF (4889 KB)

This paper presents a modeling and control method for the thermohygrometric condition (temperature and humidity) in a multizone building. The interconnection between the zones is captured through an undirected graph. Employing an electrical circuit analogy, rooms represent capacitances, and walls and doors/windows are resistances. This model characterizes both mass and heat transfer between the zo... View full abstract»

• ### Learning-Based Hierarchical Distributed HVAC Scheduling With Operational Constraints

Publication Year: 2017, Page(s):1 - 9
| | PDF (1755 KB)

This investigation proposes an energy management system for large multizone commercial buildings that combines distributed optimization with the adaptive learning. While the distributed optimization provides scalability and models the fresh-air infusion as ventilation constraints, the learning algorithm simultaneously captures the influences of occupancy and user interactions. The approach employs... View full abstract»

• ### Adaptive Trajectory Tracking Control of a Fully Actuated Surface Vessel With Asymmetrically Constrained Input and Output

Publication Year: 2017, Page(s):1 - 9
| | PDF (4347 KB)

This brief addresses the trajectory tracking control problem of a fully actuated surface vessel subjected to asymmetrically constrained input and output. The controller design process is based on the backstepping technique. An asymmetric time-varying barrier Lyapunov function is proposed to address the output constraint. To overcome the difficulty of nondifferentiable input saturation, a smooth hy... View full abstract»

• ### Iterative Learning Control for the Radio Frequency Subsystems of a Free-Electron Laser

Publication Year: 2017, Page(s):1 - 11
| | PDF (3623 KB)

In linear particle accelerators used for free-electron lasers, it is often required that the electron bunches experience the same electric field as they pass through the accelerating structures. For radio frequency (RF) pulsed mode machines, like the SwissFEL, this means that the amplitude and phase of the RF pulses feeding the structures through the waveguides should be kept constant over the pul... View full abstract»

• ### Game Theoretic Modeling of Driver and Vehicle Interactions for Verification and Validation of Autonomous Vehicle Control Systems

Publication Year: 2017, Page(s):1 - 16
| | PDF (2916 KB)

Autonomous driving has been the subject of increased interest in recent years both in industry and in academia. Serious efforts are being pursued to address legal, technical, and logistical problems and make autonomous cars a viable option for everyday transportation. One significant challenge is the time and effort required for the verification and validation of the decision and control algorithm... View full abstract»

• ### Formal Methods for Stability Analysis of Networked Control Systems With IEEE 802.15.4 Protocol

Publication Year: 2017, Page(s):1 - 11
| | PDF (1244 KB)

Wireless networked control systems (WNCSs) with control loops closed over a wireless network are prevailing these days. However, due to uncertainties such as random accessing delays and possible packet drops, the stability analysis for a WNCS is a challenging task. Most previous studies on the communication network analysis either relied on Monte Carlo simulation or followed the multistate Markov ... View full abstract»

• ### Distributed Adaptive Control of Networked Cooperative Mobile Manipulators

Publication Year: 2017, Page(s):1 - 15
| | PDF (2855 KB)

This paper deals with the networked control of loosely or tightly connected cooperative manipulators in charge of achieving a cooperative task that is specified by means of proper task-oriented variables depending on the full state of the system. Since the full state is not known to robots, a two-layer architecture is designed. At the first level, each arm controller runs a distributed observer th... View full abstract»

• ### Distributed Receding Horizon Control of Constrained Networked Leader-Follower Formations Subject to Packet Dropouts

Publication Year: 2017, Page(s):1 - 12
| | PDF (2703 KB)

A novel receding horizon control scheme is presented in this paper to manage networked leader-follower formation control problems in the presence of time-varying delay and data loss (measurement and feedback packet dropouts) occurrences on the communication and feedback channels. One of the main novelties of the proposed paradigm relies on the use of reachability analysis concepts involving the ca... View full abstract»

• ### Optimal Oxygen Excess Ratio Control for PEM Fuel Cells

Publication Year: 2017, Page(s):1 - 11
| | PDF (2703 KB)

In this paper, a feedback linearization controller is proposed for the van compressor in the air supply system of a proton exchange membrane fuel cell. The control goal is to avoid oxygen starvation and reduce power consumption by tracking an optimal reference oxygen excess ratio. Specifically, an improved control-oriented third-order model of the air supply system is proposed with the model ident... View full abstract»

• ### Structured Robust Control Against Mixed Uncertainty

Publication Year: 2017, Page(s):1 - 11
| | PDF (3621 KB)

We present new approaches to designing structured controllers, which are robust in the presence of mixed real parametric and complex dynamic uncertainty. As the synthesis of such controllers is inherently NP-hard, we discuss inner and outer relaxation techniques, which make this problem amenable to computations. Our relaxation methods are positively evaluated and compared on the basis of a rich te... View full abstract»

• ### In-Vehicle Realization of Nonlinear MPC for Gasoline Two-Stage Turbocharging Airpath Control

Publication Year: 2017, Page(s):1 - 13
| | PDF (1785 KB)

Innovative charging concepts, such as two-stage turbocharging for gasoline engines, cause high demands on the process control. The open-loop process is characterized by a complex, nonlinear system behavior. In addition, the requirements on the closed-loop system are challenging: fast reference tracking has to be achieved without overshoots while respecting constraints on the turbocharger speeds in... View full abstract»

• ### Fault Detection and Isolation of the Brake Cylinder System for Electric Multiple Units

Publication Year: 2017, Page(s):1 - 14
| | PDF (2791 KB)

Air brake systems are crucial systems for safe and stable operation of electric multiple units (EMUs). The brake cylinder system, which includes brake cylinders, corresponding pressure sensors, and connection pipes, plays a vital role in the EMU air brake system. This is because brake cylinder pressures directly affect the brake operation. Currently, brake cylinder pressures are monitored by univa... View full abstract»

• ### Saturated PID Control for the Optical Manipulation of Biological Cells

Publication Year: 2017, Page(s):1 - 8
| | PDF (1586 KB)

This brief presents a saturated PID control scheme for cell manipulation by using robot-aided optical tweezers, with consideration of both translational and rotational control of the cell. By incorporating saturation functions into a PID controller and utilizing a velocity observer, cell position and orientation can asymptotically converge to the desired values. The proposed control approach also ... View full abstract»

• ### Criteria and Algorithms for Online and Offline Detections of Industrial Alarm Floods

Publication Year: 2017, Page(s):1 - 10
| | PDF (6379 KB)

Alarm floods are referred to the phenomena that there are too many alarms occurring in a short time period to be promptly handled by industrial plant operators. This paper is on the criteria and algorithms to detect the presence of industrial alarm floods in both online and offline manners. Two basic criteria are analyzed for detecting alarm floods, based on the number of alarm occurrences and the... View full abstract»

• ### A Parametric Programming Approach to Automated Integrated Circuit Design

Publication Year: 2017, Page(s):1 - 12
| | PDF (1622 KB)

In this paper, we propose an optimization-based slotting approach to automated ICs design for generating a power transistor. The original slotting problem is formulated as a mixed-integer linear program. It is solved through parametric optimization with advantage that usage of any commercial optimization solvers on user's side is avoided with short evaluation time and simple implementation. The ap... View full abstract»

• ### Robust Team Formation Control for Quadrotors

Publication Year: 2017, Page(s):1 - 8
| | PDF (2729 KB)

In this brief, we develop a suboptimal H∞ controller for a leader-follower formation problem of quadrotors with the consideration of external disturbances and model parameter uncertainties. We also compare the control performances between this H∞ controller and an integral backstepping (IBS) controller for this problem. The resultant state feedback controller establishes the asymptot... 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.

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## 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