12 papers · ranked by Valyu relevance
Noah J. Cowan, Mustafa Mert Ankaralı, Jonathan P. Dyhr, Manu S. Madhav + 6 more
'Manu S. Madhav' 'Eatai Roth' 'Shahin Sefati' 'Simon Sponberg' 'Sarah A. Stamper' 'Eric S. Fortune' 'Thomas L. Daniel'] Control theory arose from a need to control synthetic systems. From regulating steam engines to tuning radios to devices capable of autonomous movement, it provided a formal mathematical basis for…
Jonathon W. Sensinger, Strahinja Dosen
This manuscript reviews historical and recent studies that focus on supplementary sensory feedback for use in upper limb prostheses. It shows that the inability of many studies to speak to the issue of meaningful performance improvements in real-life scenarios is caused by the complexity of the interactions of…
Asifa Yousaf
- I. Abstract—Stability and control of a non-linear system represent an important system configuration that frequently arises in practical engineering. Stability covers a vast range of systems that do not obey the superposition principle and applies to more real-world systems because all real control systems are…
Julian Stirling, Thilo Glatzel, Thomas Schimmel
We derive a theoretical model for studying SPM feedback in the context of control theory. Previous models presented in the literature that apply standard models for proportional-integral-derivative controllers predict a highly unstable feedback environment. This model uses features specific to the SPM implementation of…
Peter J. Grahn, Grant W. Mallory, B. Michael Berry, Jan T. Hachmann + 2 more
Movement is planned and coordinated by the brain and carried out by contracting muscles acting on specific joints. Motor commands initiated in the brain travel through descending pathways in the spinal cord to effector motor neurons before reaching target muscles. Damage to these pathways by spinal cord injury (SCI)…
Weiming Che, Fulvio Forni
— We study the problem of controlling oscillations in closed loop by combining positive and negative feedback in a mixed configuration. We develop a complete design procedure to set the relative strength of the two feedback loops to achieve steady oscillations. The proposed design takes advantage of dominance theory…
Maxime Volery, Xinxin Guo, Hervé Lissek
This paper presents an acoustic impedance control architecture for an electroacoustic absorber combining both feedforward and feedback microphone-based strategies on a current-driven loudspeaker. Feedforward systems enable good performance for direct impedance control. However, inaccuracies in the required actuator…
Karst Brummelhuis, Niranjan Saikumar, Jan‐Willem van Wingerden, S. Hassan HosseinNia
'S. Hassan HosseinNia'] Abstract— This paper presents a novel adaptive feedforward controller design for reset control systems. The combination of feedforward and reset feedback control promises high performance as the feedforward guarantees reference tracking, while the non-linear feedback element rejects…
Liliana P Paredes, Strahinja Dosen, Frank Rattay, Bernhard Graimann + 1 more
'Dario Farina'] Background Electrocutaneous stimulation can restore the missing sensory information to prosthetic users. In electrotactile feedback, the information about the prosthesis state is transmitted in the form of pulse trains. The stimulation frequency is an important parameter since it influences the data…
Aidar Zhetessov, Nathan Petersen
— Modeling and comprehensive analysis of the Active Front-End (AFE) rectifier is addressed in this work. The particular emphasis is on the comparison of two state feedback control frameworks: state-space and frequency domain. The equivalence of both frameworks for the AFE case was shown. Moreover, analytical relations…
Ute Strehl
Popular definitions of neurofeedback point out that neurofeedback is a process of operant conditioning which leads to self-regulation of brain activity. Self-regulation of brain activity is considered to be a skill. The aim of this paper is to clarify that not only operant conditioning plays a role in the acquisition…
Jonathan E. Thomas, Katharina Stapelmann
Cold atmospheric plasmas (CAPs) within recent years have shown great promise in the field of plasma medicine, encompassing a variety of treatments from wound healing to the treatment of cancerous tumors. For each subsequent treatment, a different application of CAPs has been postulated and attempted to best treat the…