25 papers · ranked by Valyu relevance
Matthieu Malléjac, Maxime Volery, Hervé Lissek, Romain Fleury
Passive sound mitigation techniques have garnered attention whether for absorption, isolation, reverberation or new wave phenomena observation. In parallel, a wide range of research has been devoted to active control strategies, which complement passive techniques, particularly for low-frequency. We review the main…
Giovanni Pezzulo, Francesco Rigoli, Karl J. Friston
Motivated control refers to the coordination of behaviour to achieve affectively valenced outcomes or goals. The study of motivated control traditionally assumes a distinction between control and motivational processes, which map to distinct (dorsolateral versus ventromedial) brain systems. However, the respective…
Yizheng Liu, Qian Hu, Xing Wang, Damith Herath + 3 more
Soft robotics enables inherently safe, compliant interaction, yet integrating brain-computer interfaces (BCIs) remains hindered by a fundamental mismatch: BCIs typically output low-bandwidth, discrete commands, whereas soft robots possess high-dimensional, nonlinear dynamics. In this position paper, we argue that…
Sigurd Skogestad
Advanced regulatory control (ARC), also known as advanced PID architectures, is a simple and robust way of controlling processes with changing and possibly conflicting constraints, where it previously was believed - at least in academia - that model-based solutions, such as MPC, were the only effective solution. To…
Akhil Padmanabha, Carmel Majidi, Zackory Erickson
—Physically assistive robots in home environments can enhance the autonomy of individuals with impairments, allowing them to regain the ability to conduct self-care and household tasks. Individuals with physical limitations may find existing interfaces challenging to use, highlighting the need for novel interfaces that…
Osman Kaan Karagoz, Aysegul Kilic, Emin Yusuf Aydin, Mustafa Mert Ankarali + 1 more
Animals use active sensing movements to shape the spatiotemporal characteristics of sensory signals to better perceive their environment under varying conditions. However, the underlying mechanisms governing the generation of active sensing movements are not known. To address this, we investigated the role of active…
Joan Lobo-Prat, Peter N Kooren, Arno HA Stienen, Just L Herder + 2 more
'Bart FJM Koopman' 'Peter H Veltink'] Active movement-assistive devices aim to increase the quality of life for patients with neuromusculoskeletal disorders. This technology requires interaction between the user and the device through a control interface that detects the user’s movement intention. Researchers have…
T. Arnoult, Gwenaël Acher, Vianney Nowinski, Pierre Vuillemin + 6 more
'Corentin Briat' 'Philippe Pernod' 'Cécile Ghouila-Houri' 'Abdelkrim Talbi' 'Éric Garnier' 'Charles Poussot-Vassal'] Flow control aims at modifying a natural flow state to reach an other flow state considered as advantageous. In this paper, active feedback flow separation control is investigated with two different…
Michael M. Norton, Piyush Grover, Michael F. Hagan, Seth Fraden
In this work we present the first systematic framework to sculpt active nematics systems, using optimal control theory and a hydrodynamic model of active nematics. We demonstrate the use of two different control fields, (1) applied vorticity and (2) activity strength, to shape the dynamics of an extensile active…
Robin Volkmar, Strahinja Dosen, Jose Gonzalez-Vargas, Marcus Baum + 1 more
'Marko Markovic'] Background The loss of a hand is a traumatic experience that substantially compromises an individual’s capability to interact with his environment. The myoelectric prostheses are state-of-the-art (SoA) functional replacements for the lost limbs. Their overall mechanical design and dexterity have…
Agamemnon Krasoulis, Kianoush Nazarpour
We aim to develop a paradigm for simultaneous and independent control of multiple degrees of freedom (DOFs) for upper-limb prostheses. We introduce action control, a novel method to operate prosthetic digits with surface electromyography (EMG) based on multi-label, multi-class classification. At each time step, the…
Saeed Bahrami Moqadam, Seyed Mohammad Elahi, An Mo, WenZeng Zhang
In this research, the combination of fuzzy/PD and EMG signals, as direct command control, is proposed. Although fuzzy/PD strategy was used to control force position of the artificial hand, the combination of that with EMG signaling to voluntary direct command control is a novel method. In this paper, the EMG signal and…
Authors not listed
Active assembly of matter is a defining trait of living systems, enabling the creation of far-from-equilibrium materials essential for the functionality of life. This is achieved through energy-dissipative, multi-step processes facilitated by various biomolecular agents for chemical and mechanical assembly of matter.…
Annette Hagengruber, Gabriel Quere, Maged Iskandar, Samuel Bustamante + 5 more
'Samuel Bustamante' 'Jianxiang Feng' 'Daniel Leidner' 'Alin Albu-Schäffer' 'Freek Stulp' 'Jörn Vogel'] Mobile manipulation aids aim at enabling people with motor impairments to physically interact with their environment. To facilitate the operation of such systems, a variety of components, such as suitable user…
Benjamin Campbell, Huai-Ti Lin, Holger Krapp
Biological systems have evolved to perform high-speed voluntary movements whilst maintaining robustness and stability. This paper examines a control architecture based on the principles of efference copies found in insect sensorimotor control which we call the inner-outer loop (IOL) controller. Within a control…
Ophelie Saussus, Pinhao Song, Sofie De Schrijver, Irene Caprara + 3 more
Continuous invasive brain–computer interfaces (BCIs) translate neural activity into continuous control signals. During ongoing control, fluctuations in these signals can reflect either transient execution noise or genuine changes in user intent, yet most BCI control systems do not explicitly distinguish between these…
Lucas Quesada, Dorian Verdel, Olivier Bruneau, Bastien Berret + 2 more
Despite extensive investigation on the use of electromyographic (EMG) activity to control active exoskeletons over the past decade, designing intuitive assistive controllers that seamlessly integrate with natural human motor control have yet to be realized. While existing EMG-based controllers often achieve substantial…
Shijie Deng, Brandon Jolly, James Wilkes, Yu Mu + 5 more
Integrated catalysis is an emerging methodology that can streamline the multistep synthesis of complicated products in a single reaction vessel, achieving a high degree of control and reducing the waste and cost of the overall process. Integrated catalysis utilizes spatial and temporal control to couple different…
Ege Ç. Altunkaya, Akın Çatak, Emre Koyuncu, İbrahim Özkol
T he loss of control, a leading factor in fatal crashes, poses a critical threat to flight safety by jeopardizing the flight stability [1]. Numerous factors contribute to this loss, ranging from adverse onboard conditions to unexpected vehicle upsets [2, 3]. The diverse array of reasons and their interactions…
Riccardo Zanella, Federico Califano, Antonio Franchi, Stefano Stramigioli
'Stefano Stramigioli'] Abstract— In this letter, we propose a control scheme for rigid bodies designed to optimise transient behaviors. The search space for the optimal control input is parameterized to yield a passive, specifically lossless, nonlinear feedback controller. As a result, it can be combined with other…
Authors not listed
Proteolysis targeting chimeras (PROTACs) are heterobifunctional modalities that induce protein degradation via a catalytic mode of action. Photochemically targeting chimeras (PHOTACs) are a subset of PROTACs designed for light-activated protein degradation, thereby offering precise spatiotemporal control. In this…
Sanders Aspelund, Priya Patel, Mei-Hua Lee, Florian Kagerer + 2 more
Children with movement impairments needing assistive devices for activities of daily living often require novel methods for controlling these devices. Body-machine interfaces, which rely on body movements, are particularly well-suited for children as they are non-invasive and have high signal-to-noise ratios. Here, we…
Chris Zhang, Mary Pitman, Anjali Dixit, Sumudu Leelananda + 7 more
DNA-encoded libraries (DELs) provide the means to make and screen millions of diverse compounds against a target of interest in a single experiment. However, despite producing large volumes of binding data at a relatively low cost, the DEL selection process is susceptible to noise, necessitating computational follow-up…
Tomoya Maruyama, Jing Gong, Masahiro Takinoue
Bio-soft matter droplets formed via liquid-liquid phase separation (LLPS) of biopolymers have been found in living cells. Synthetic LLPS droplets have recently been employed in nanobiotechnology for artificial cell construction, molecular robotics, molecular computing, diagnosis, and therapeutics. Controlling the…
Yannick Ureel, Maarten R. Dobbelaere, Yi Ouyang, Kevin De Ras + 3 more
By combining machine learning with design of experiments, so-called active machine learning, more efficient and cheaper research can be conducted. Machine learning algorithms are more flexible, and are better at investigating the processes spanning all length scales of chemical engineering. While the active machine…