Results 41 to 50 of about 4,596,229 (314)

Flatness optimization of micro-injection moulded parts: The case of a PMMA microfluidic component [PDF]

open access: yes, 2011
Micro-injection moulding (µ-IM) has attracted a lot of interest because of its potential for the production of low-cost, miniaturized parts in high-volume.
Alcock, Jeffrey R.   +5 more
core   +1 more source

Accurate Tracking of Aggressive Quadrotor Trajectories using Incremental Nonlinear Dynamic Inversion and Differential Flatness

open access: yes, 2020
Autonomous unmanned aerial vehicles (UAVs) that can execute aggressive (i.e., high-speed and high-acceleration) maneuvers have attracted significant attention in the past few years.
Karaman, Sertac, Tal, Ezra
core   +1 more source

Coupled nonlinear vehicle control: Flatness-based setting with algebraic estimation techniques [PDF]

open access: yes, 2014
International audienceA combined nonlinear longitudinal and lateral vehicle control is investigated. Flatness-based nonlinear control and new algebraic estimation techniques for noise removal and numerical differentiation are the main theoretical tools ...
d'Andréa-Novel, Brigitte   +3 more
core   +3 more sources

Flatness-Based High Frequency Control of a Hydraulic Actuator [PDF]

open access: yesJournal of Dynamic Systems, Measurement, and Control, 2011
This paper presents the design and implementation of a nonlinear feedforward control algorithm for a hydraulic actuator driven by a multistage servo valve. Combined with a conventional feedback control algorithm, high frequencies can be achieved even for large-scale strokes.
Kock, Florian, Ferrari, Cornelius
openaire   +2 more sources

Real-Time Trajectory Planning and Control for Constrained UAV Based on Differential Flatness

open access: yesInternational Journal of Aerospace Engineering, 2022
The trajectory planning of UAV with nonholonomic constraints is usually taken as differential algebraic equation to solve the optimal control problem of functional extremum under the condition of inequality constraints.
Dongli Wu   +4 more
doaj   +1 more source

A Test for Differential Flatness by Reduction to Single Input Systems [PDF]

open access: yes, 1995
For nonlinear control systems (p inputs), we present a test for flatness. The method consists of making an initial guess for p-1 of the flat outputs, which may involve parameters still to be determined.
Rathinam, Muruhan, Sluis, Willem M.
core   +2 more sources

Study and comparison of non linear and LPV control approaches for vehicle stability control [PDF]

open access: yes, 2013
International audienceThis paper proposes a study and a comparison between two efficient and novel vehicle control dynamics strategies, namely, the non linear Flatness control strategy and the LPV/Hinf control strategy.
D'Andréa-Novel, Brigitte   +4 more
core   +2 more sources

Thomas decompositions of parametric nonlinear control systems

open access: yes, 2012
This paper presents an algorithmic method to study structural properties of nonlinear control systems in dependence of parameters. The result consists of a description of parameter configurations which cause different control-theoretic behaviour of the ...
Lange-Hegermann, Markus, Robertz, Daniel
core   +1 more source

Flatness-based Feedforward Control of Wind Turbines Using Lidar [PDF]

open access: yesIFAC Proceedings Volumes, 2014
Current lidar technology is offering a promising opportunity to take a fresh look at wind turbine control. This work evaluates a flatness-based feedforward approach, that allows to calculate the control action based on trajectories of the rotor speed and tower motion using wind measurements.
Schlipf, David, Cheng, Po Wen
openaire   +2 more sources

Flatness-based control in successive loops for robotic manipulators and autonomous vehicles

open access: yesInternational Journal of Systems Science
The control problem for the multivariable and nonlinear dynamics of robotic manipulators and autonomous vehicles is solved with the use of a flatness-based control approach which is implemented in successive loops.
G. Rigatos   +4 more
semanticscholar   +1 more source

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