Searched for: subject%3A%22Robust%255C%2BControl%22
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Roy, S. (author), Lee, Jinoh (author), Baldi, S. (author)
This brief proposes a new adaptive-robust formulation for time-delay control (TDC) under a less-restrictive stability condition. TDC relies on estimating the unknown system dynamics via the artificial introduction of a time delay, often referred to as time-delay estimation (TDE). In conventional TDC, the estimation error, called TDE error, is...
journal article 2021
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Khalik, Alan (author)
With data-driven control it is possible to design a controller for systems with non-parametric models. The intermediate step of modelling or identification of the system is not necessary, because a non-parametric model of the system can be obtained by means of experimental data. In the linear time-invariant (LTI) framework, these non-parametric...
master thesis 2020
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Das, Hemjyoti (author)
Pneumatic cylinders provide an environment-friendly actuation means by minimizing the leakage of any harmful industrial fluids, as occurs for hydraulic actuators. Thus, pneumatic actuators require less maintenance, compared to hydraulic actuators. Moreover, for a similar weight of hydraulic actuator, the cost of a pneumatic actuation system is...
master thesis 2020
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Skaltsis, Georgios (author)
Data-driven control approaches have been proved highly effective in applications where the dynamics of the system are unknown. The reason is that the use of data in control overcomes the challenge of parametric modeling which requires effort and often leads to an insufficient description of the system’s behavior. By contrast, the behavior of the...
master thesis 2020
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Stinenbosch, Tobias (author)
In the past decade, the wind energy subsidies provided by the Dutch government is declining. In order to adopt wind energy as a well-established source of renewable energy, the costs of (offshore) wind energy should be lowered. This can be achieved by increasing the energy production or by lowering the maintenance and initial costs. In search of...
master thesis 2020
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Roy, S. (author), Baldi, S. (author)
Available control methods for underactuated Euler–Lagrange (EL) systems rely on structure-specific constraints that may be appropriate for some systems, but restrictive for others. A generalized (structure-independent) control framework is to a large extent missing, especially in the presence of uncertainty. This paper introduces an adaptive...
journal article 2020
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Marín, Luis Gabriel (author), Sumner, Mark (author), Muñoz-Carpintero, Diego (author), Köbrich, Daniel (author), Pholboon, Seksak (author), Sáez, Doris (author), Nunez, Alfredo (author)
This paper presents a two-level hierarchical energy management system (EMS) for microgrid operation that is based on a robust model predictive control (MPC) strategy. This EMS focuses on minimizing the cost of the energy drawn from the main grid and increasing self-consumption of local renewable energy resources, and brings benefits to the...
journal article 2019
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Jongeneel, Wouter (author)
We consider the problem of safely controlling an unknown stochastic linear dynamical system subject to an infinite-horizon discounted quadratic cost. <br/>Many of the existing model-based approaches for handling the corresponding robust optimal control problem resort to game theoretic formulations of the uncertainty, either explicit- or...
master thesis 2019
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Oskam, Rick (author)
A wet clutch is a device that transfers torque between two shafts via a hydraulic mechanism. Wet clutch control is key to achieve smooth and fast clutch engagements. Optimal control of a wet clutch is not trivial because of the complexity of the system due to nonlinearities, hybrid dynamics and changing dynamics over time due to changing...
master thesis 2019
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Overtoom, Jelle (author)
A relatively new and not rather common technique in construction industry is the use of 3D printers to print architectural structures and buildings. Nowadays, parts of the printed object are build in inside environments, where after the parts have to be transported to their desired location, which is very costly and time consuming. A solution...
master thesis 2019
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Ye, J. (author), Roy, S. (author), Godjevac, M. (author), Baldi, S. (author)
With the growing demand of large-scale heavy lift vessels in the deep-sea offshore construction works, high performance of Dynamic positioning (DP) systems is becoming ever crucial. However, current DP systems on board of heavy lift vessels do not consider model uncertainty (typically arising from mooring forces). In this paper, an observer...
journal article 2019
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Feliu-Talegon, Daniel (author), Feliu-Batlle, Vicente (author), Tejado, Inés (author), Vinagre, Blas M. (author), Hossein Nia Kani, S.H. (author)
The control of robots that interact with the environment is an open area of research. Two applications that benefit from this study are: the control of the force exerted by a robot on an object, which allows the robot to perform complex tasks like assembly operations, and the control of collisions, which allows the robot safely collaborate...
journal article 2019
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Chen, Linda (author), Saikumar, N. (author), Hossein Nia Kani, S.H. (author)
In this paper, a framework for the combination of robust fractional-order CRONE control with nonlinear reset is given for both first and second generation CRONE control. General design rules are derived and presented for these CRONE reset controllers. Within this framework, fractional-order control allows for better tuning of the open-loop...
journal article 2019
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Crepy-Marglais, Jean-Daniel (author)
Nowadays, a satellite is considered as out of range forever once it is launched. This may soon no longer hold thanks to on-orbit servicing. However, the complexity of that topic makes it highly challenging on many aspects. On-orbit servicing using a robotic arm is nonetheless the most investigated technology in order to achieve the berthing of...
master thesis 2018
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Yuan, S. (author)
As a special class of hybrid systems, switched systems have attracted a lot of attention in the last decade due to theoretical and practical interests. When controlling switched systems, a ubiquitous problem is the presence of large parametric uncertainties and external disturbances. However, the state of the art on adaptive and robust control...
doctoral thesis 2018
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Viavattene, Giulia (author)
Spaceplanes represent a new promising concept for space flight. A spaceplane is a reusable, safe, efficient and economical space transportation system that can generate lift during its atmospheric flight, analogously to an aircraft, and it is able to travel in space as a spacecraft. What makes spaceplanes so attractive is the possibility of...
master thesis 2018
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Lv, Maolong (author), Wang, Ying (author), Baldi, S. (author), Liu, Zongcheng (author), Wang, Zutong (author)
In dynamic surface control (DSC) methods, the control gain functions of systems are always assumed to be bounded, which is a restrictive assumption. This work proposes a novel DSC approach for an extended class of strict-feedback nonlinear systems whose control gain functions are continuous and possibly unbounded. Appropriate compact sets are...
journal article 2018
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Chen, Linda (author)
In high-tech industry (sub)nanometre precision motion control is essential. For example wafer scanners, used for production of integrated circuits, have to provide (sub)nanometre precision positioning whilst satisfying challenging requirements on speed at the same time. It is in demanding cases like this that different requirements begin to...
master thesis 2017
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Bregman, Sander (author)
In this thesis, a control design problem, in which communication between different elements of the control system takes place through a shared (possibly wireless) channel, is considered. With the implementation of the proposed approach, the use of limited resources such as network bandwidth and battery life may be reduced.<br/><br/>The proposal...
master thesis 2017
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Raach, Steffen (author), Boersma, S. (author), van Wingerden, J.W. (author), Schlipf, David (author), Cheng, Po Wen (author)
Wind turbine wake redirection is a promising concept for wind farm control to increase the total power of a wind farm. Further, the concept aims to avoid partial wake overlap on a downwind wind turbine and hence aims to decrease structural loads. Controller for wake redirection need to account for model uncertainties due to the complexity of...
conference paper 2017
Searched for: subject%3A%22Robust%255C%2BControl%22
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