Results 91 to 100 of about 45,098 (292)

Quadcopter Trajectory Tracking Control Based on Flatness Model Predictive Control and Neural Network

Actuators
In this paper, a novel control architecture is proposed in which FMPC couples feedback from model predictive control with feedforward linearization. The proposed approach has the computational advantage of only requiring a convex quadratic program to be ...
Yong Li, Qidan Zhu, Ahsan Elahi
doaj   +1 more source

Feedback control for steering support system based on flatness and particle swarm optimization

Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2016
In this study we give a feedback control method for steering support system. In this method we consider the stability of the path tracking control system under the limitation of steering angle, so that drivers can drive safer and more comfortable.
Michihiro KAWANISHI, Yuta TSUGE, Shi-Jia PEI, Tatsuo NARIKIYO   +3 more
doaj   +1 more source

On the uniqueness theorem of Holmgren [PDF]

, 2014
We rereview the classical Cauchy-Kovalevskaya theorem and the related uniqueness theorem of Holmgren, in the simple setting of powers of the Laplacian and a smooth curve segment in the plane.
Hedenmalm, Haakan
core  

Mycobacterial cell division arrest and smooth‐to‐rough envelope transition using CRISPRi‐mediated genetic repression systems

FEBS Open Bio, EarlyView.
CRISPRI‐mediated gene silencing and phenotypic exploration in nontuberculous mycobacteria. In this Research Protocol, we describe approaches to control, monitor, and quantitatively assess CRISPRI‐mediated gene silencing in M. smegmatis and M. abscessus model organisms.
Vanessa Point, Wafaa Achache, Janïs Laudouze, Eliana Sepulveda Ramos, Mickaël Maziero, Céline Crauste, Stéphane Canaan, Pierre Santucci   +7 more
wiley   +1 more source

Pioglitazone plus (−)‐epigallocatechin gallate: a novel approach to enhance osteogenic performance in aged bone marrow mesenchymal stem cells

FEBS Open Bio, EarlyView.
Aged human bmMSCs are seeded in the scaffold. Osteoblastic induction can slightly increase cell's bone‐forming activity to produce bone‐like tissues, shown as the sporadic xylenol orange‐stained spots (the lower left image). Notably, pioglitazone plus EGCG co‐treatment dramatically increases cell's bone‐forming activity and bone‐like tissue production (
Ching‐Yun Chen, Jia‐Ci Jhang, Chun‐Yi Peng, Quốc Cường Nguyễn, Feng‐Huei Lin, Hung‐Ming Wu, Shankung Lin   +6 more
wiley   +1 more source

Seguimiento de trayectorias en manipuladores robóticos usando Differential Flatness

Ingeniería e Investigación, 2011
Este documento propone una aplicación con Differential Flatness para el problema de seguimiento de trayectorias en manipuladores robóticos. Para cada coordenada generalizada, se proponen sus trayectorias como una función en el tiempo donde deben ...
Elkin Veslin Diaz, Jules Slama, Max Dutra, Omar Lengerke, Magda Morales Tavera   +4 more
doaj  

C2α‐carbanion‐protonating glutamate discloses tradeoffs between substrate accommodation and reaction rate in actinobacterial 2‐hydroxyacyl‐CoA lyase

FEBS Open Bio, EarlyView.
Enzymes of the 2‐hydroxyacyl‐CoA lyase group catalyze the condensation of formyl‐CoA with aldehydes or ketones. Thus, by structural adaptation of active sites, practically any pharmaceutically and industrially important 2‐hydroxyacid could be biotechnologically synthesized. Combining crystal structure analysis, active site mutations and kinetic assays,
Michael Zahn, Barbara Seroka, Ryszard Lazny, Zenon Lotowski, Thore Rohwerder   +4 more
wiley   +1 more source

Robust Tracking Controller for a DC/DC Buck-Boost Converter–Inverter–DC Motor System

Energies, 2018
This paper has two aims. The first is to develop a robust hierarchical tracking controller for the DC/DC Buck-Boost–inverter–DC motor system.
Eduardo Hernández-Márquez, Carlos Alejandro Avila-Rea, José Rafael García-Sánchez, Ramón Silva-Ortigoza, Gilberto Silva-Ortigoza, Hind Taud, Mariana Marcelino-Aranda   +6 more
doaj   +1 more source

Rapid screening of staphylokinase protein variants using an unpurified cell‐free expression system

FEBS Open Bio, EarlyView.
An unpurified cell‐free protein synthesis (CFPS) platform enables rapid functional screening of staphylokinase variants. Direct plasminogen‐activation assays performed in microplate format provide real‐time activity readouts, allowing rapid identification and ranking of variants with improved or reduced fibrinolytic activity without protein ...
Maria Tomková, Veronika Hovanová, Jiri Damborsky, Erik Sedlák   +3 more
wiley   +1 more source

Robust multilevel average controller for trajectory tracking in mobile robots powered by solar panels: Integrating actuators and power electronics stage

Results in Engineering
This paper addresses the challenge of bidirectional trajectory tracking, for the first time in the literature, in wheeled mobile robots (WMRs) powered by renewable energy by thoroughly considering all involved subsystems.
Erik Reyes-Reyes, Benjamin Natanael Santiago-Nogales, Josué Roberto Rodríguez-Cerón, Ramón Silva-Ortigoza, Alfredo Roldán-Caballero, José Rafael García-Sánchez, Magdalena Marciano-Melchor, Hind Taud, Salvador Tavera-Mosqueda   +8 more
doaj   +1 more source