Results 261 to 270 of about 19,264 (300)

Control of linear systems with saturating actuators

Proceedings of 1995 American Control Conference - ACC'95, 1996
The paper deals with (linear) systems of the form \(\dot x = Ax + B \sigma (u + g(x,t))\), \(y = Cx\), with \(x,u\) and \(y\) the state-, input- and output vector; \(\sigma\) is a saturation function and \(g\) represents the uncertainties/disturbances in the system.
Ali Saberi, Zongli Lin, Andrew R. Teel
openaire   +2 more sources

Design Considerations for Coreless Linear Actuators

IEEE Transactions on Magnetics, 2013
Linear permanent magnet synchronous motors are often used in applications where a high accuracy is needed. This paper investigates the influence of the key design parameters on the performance of a linear actuator with vertically magnetized magnets and a magnet array with quasi-Halbach magnetization.
Kremers, M.F.J., Paulides, J.J.H., Janssen, J.L.G., Lomonova, E.   +3 more
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A flexure-based electromagnetic linear actuator

Nanotechnology, 2008
This paper introduces a novel nano-positioning actuator with large displacement and driving force, termed a flexure-based electromagnetic linear actuator (FELA). It mainly comprises an electromagnetic driving scheme and flexure-supporting bearings that provide infinite positioning resolution and highly repeatable motion.
Tat Joo, Teo, I-Ming, Chen, Guilin, Yang, Wei, Lin   +3 more
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A Scanning Linear Actuator

1995
Abstract This paper reports on the design of a small actuator for a linear-scan application. Various different types of model used during design included field and circuit models. Details of the actuator topology and simulation results are given in the paper.
ö. Göl, T.M. Doan, A. Mokari, A. Nafalski   +3 more
openaire   +1 more source

Optimal actuator placement for linear systems with limited number of actuators

2017 American Control Conference (ACC), 2017
A completely controllable linear dynamical system can be steered from any given initial state to any specified final state with an application of input control energy. The input control energy is provided through a combination of actuators. It is desirable to have a limited number of actuators, which also presents the possibility of multiple actuator ...
Prasad Vilas Chanekar, Nikhil Chopra, Shapour Azarm   +2 more
openaire   +1 more source

A dynamic linearization concept for piezoelectric actuators

IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 2011
We present a linearization circuit based on a capacitive Wheatstone bridge that is able to set a desired polarization in a piezoactuator. The system is meant to be used for dynamic actuation in a broad frequency range. A general nonlinear model for piezoactuators is presented in which two nonlinear sub-systems are cascaded: the electric-field-to ...
Biancuzzi, Giovanni, Haller, Daniel, Lemke, Thomas, Wischke, Martin, Goldschmidtböing, Frank, Woias, Peter   +5 more
openaire   +3 more sources

Development of a new linear actuator for androids

2008 IEEE International Conference on Robotics and Automation, 2008
In order to realize androids and humanoids that have very humanlike mechanisms and movements, the development of new linear actuators is necessary. In the development of the actuators, we have found a structure of the linear actuator that is more powerful and quick through iterative simulations based on the 3D finite element method and developed the ...
Masayuki Mishima, Hiroshi Ishiguro, Katsuhiro Hirata   +2 more
openaire   +1 more source

Conducting IPN actuators: From polymer chemistry to actuator with linear actuation

Synthetic Metals, 2006
Among electroactive actuators, those based on electronic conducting polymers (ECPs) possess several advantages (low actuation voltages, large deformations, etc.) but also some drawbacks (bending movements only, delamination, etc.). In order to overcome the delamination process observed in working three-layered actuators, we have developed a new concept
Vidal, F., Plesse, Cedric, Palaprat, G., Kheddar, Abderrahmane, Citérin, Johann, Teyssié, D., Chevrot, C.   +6 more
openaire   +1 more source

Linear-Quadratic Optimal Actuator Location

IEEE Transactions on Automatic Control, 2011
In control of vibrations, diffusion and many other problems governed by partial differential equations, there is freedom in the choice of actuator location. The actuator location should be chosen to optimize performance objectives. In this paper, we consider linear quadratic performance.
openaire   +1 more source

Novel Linear Hydraulic Actuator

ASME/BATH 2015 Symposium on Fluid Power and Motion Control, 2015
In the area of linear motion, infinite stroke only is provided by electric actuators today, until now there has been no hydraulic alternative. The novel linear hydraulic actuator consists of two double acting cylinders with a common piston rod. The working principle of this actuator for short movements is that at least one piston is connected to the ...
Magnus Landberg, Martin Hochwallner, Petter Krus   +2 more
openaire   +1 more source