22 papers · ranked by Valyu relevance
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…
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…
Benjamin Parrell, Adam C. Lammert, Gregory Ciccarelli, Thomas F. Quatieri
This paper reviews the current state of several formal models of speech motor control with particular focus on the low level control of the speech articulators. Further development of speech motor control models may be aided by a comparison of model attributes. The review builds an understanding of existing models from…
Michael Chevalier, Mariana Gómez-Schiavon, Andrew Ng, Hana El-Samad
The ability of cells to regulate their function through feedback control is a fundamental underpinning of life. The capability to engineer de novo feedback control with biological molecules is ushering in an era of robust functionality for many applications in biotechnology and medicine. To fulfill their potential…
Yixiu Sun, Lizhan Zeng, Ying Luo, Xiaoqing Li + 1 more
H-type motion platform with linear motors is widely used in two-degrees-of-freedom motion systems, and one-direction dual motors need to be precisely controlled with strict synchronization for high precision performance. In this paper, a synchronous control method based on model decoupling is proposed. The dynamic…
Emilia Noorsal, Saharul Arof, Saiful Zaimy Yahaya, Zakaria Hussain + 3 more
'Daniel Kho' 'Yusnita Mohd Ali' 'Piero Malcovati'] Functional electrical stimulation (FES) device has been widely used by spinal cord injury (SCI) patients in their rehab exercises to restore motor function to their paralysed muscles. The major challenge of muscle contraction induced by FES is early muscle fatigue due…
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…
Ahmed W. Shehata, Erik J. Scheme, Jonathon W. Sensinger
Myoelectric prosthetic devices are commonly used to help upper limb amputees perform activities of daily living, however amputees still lack the sensory feedback required to facilitate reliable and precise control. Augmented feedback may play an important role in affecting both short-term performance, through real-time…
Davide Salzano, Barbara Shannon, Claire Grierson, Lucia Marucci + 2 more
Cybergenetics, an emerging discipline straddling synthetic biology and control engineering, seeks to harness feedback control mechanisms for engineering reliable synthetic biological circuits that dynamically regulate target gene expression within host organisms. Current approaches, including embedded control…
Deepak K. Agrawal, Ryan Marshall, Vincent Noireaux, Eduardo D Sontag
Feedback mechanisms play a critical role in the maintenance of cell homeostasis in the presence of disturbances and uncertainties. Motivated by the need to tune the dynamics and improve the robustness of synthetic gene circuits, biological engineers have proposed various designs that mimic natural molecular feedback…
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…
Ahmed W. Shehata, Erik J. Scheme, Jonathon W. Sensinger
Myoelectric prosthetic devices are commonly used to help upper limb amputees perform activities of daily living, however amputees still lack the sensory feedback required to facilitate reliable and precise control. Augmented feedback may play an important role in affecting both short-term performance, through real-time…
Svenja Drücker, Lukas Lanza, Thomas Berger, Timo Reis + 1 more
'Robert Seifried'] Current engineering design trends, such as light-weight machines and humanmachine-interaction, often lead to underactuated systems. Output trajectory tracking of such systems is a challenging control problem. Here, we use a twodesign-degree of freedom control approach by combining funnel feedback…
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…
Authors not listed
This paper presents an empirical comparison of process control algorithms, with particular emphasis on classical Proportional–Integral–Derivative (PID) control, Model Predictive Control (MPC), and neural network-based methods in the context of complex industrial plants. Since industrial sectors frequently demand…
Yan Liu, Yan Huang, He Zhang, Qiang Huang
In the paper, adaptive neural fuzzy (ANF) PID control is applied on the stability analysis of phase-shifted full-bridge (PSFB) zero-voltage switch (ZVS) circuit, which is used in battery chargers of electric vehicles. At first, the small-signal mathematical model of the circuit is constructed. Then, by fuzzing the…
Chong Li, Liang Shen, Jiang Shao, Jiwen Fang + 2 more
'Roman A. Surmenev'] In order to improve the vibration suppression effect of the flexible beam system, active control based on soft piezoelectric macro-fiber composites (MFCs) consisting of polyimide (PI) sheet and lead zirconate titanate (PZT) is used to reduce the vibration. The vibration control system is composed…
Nima Beygi, Maani Beigy, Mehdi Siahi
A variety of control systems have been proposed for aircraft autopilot systems. Traditional approaches such as proportional controller and conventional PID (CPID) controller are widely used. PID controller has a good static performance especially for linear and time-invariant systems, but a weak dynamic performance and…
Aliye Hazal Koyuncu, Jacopo Movilli, Sevil Sahin, Dmitrii V. Kriukov + 2 more
This work describes a competing activation network, which is regulated by chemical feedback at the liquid-surface interface. Feedback loops dynamically tune the concentration of chemical components in living systems, thereby controlling regulatory processes in neural, genetic, and metabolic networks. Advances in…
Yoav Vered, Stephen J. Elliott
This paper describes the design of a robust controller for position control in systems with sandwiched backlash. The backlash, which is nonsmooth and nonlinear, is inevitable in the operation of many systems, but it can have destructive effects on the stability and performance of feedback systems. In this work, a…
Authors not listed
Photocatalysis enables valuable reactions such as synthetic transformations or energy conversion processes like water splitting. To rationally improve photocatalytic reactions, mechanistic insights are required. These can be obtained with kinetic measurements, which are, however, difficult to obtain for a large enough…
Authors not listed
In experimental chemistry, actions are adjusted based on what we see—such as dosing until dissolution, heating until melting, or stirring until mixing is complete. However, current self-driving labs (SDLs) do not monitor these visual cues. HeinSight 4.0 fills this gap by integrating computer vision into SDLs to enable…