Results 251 to 260 of about 38,287 (305)

Control of quadrotors with actuator saturations

The 27th Chinese Control and Decision Conference (2015 CCDC), 2015
Actuator saturation is a common problem in the actual system of quadrotors. In this paper, we study the control method of quadrotors with actuator saturations, and we propose a static rescaling method. Firstly, the system control of quadrotors is divided into the attitude and position control.
Wu Yang, Cao Ke-cai, Lv Mengjiao
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An Uncertainty Model for Saturated Actuators

1989 American Control Conference, 1989
An uncertainty model for saturated actuators is reported in this paper. The model includes linear as well as quasi-linear elements where the quasi-linear elements are used to model the effects of rate and deflection limiting within the actuator. Since the actuator uncertainty model is quasi-linear, the magnitudes of the signals within the actuator ...
Mark R. Anderson, David K. Schmidt
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Analysis for Nested Actuator Saturation

2019
Properties of nested saturation are defined as for a poset to be the existence of a sequence of chain partitions in [142]. Nested saturation will arise if an actuator is subject to magnitude and rate saturation simultaneously [3]. A nested saturation function method is inherently improved to develop a controller, without requirements on memory of past ...
Hongjiu Yang, Yuanqing Xia, Qing Geng
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Sliding surface design with saturated actuator

2012 12th International Workshop on Variable Structure Systems, 2012
A class of nonlinear uncertain systems with saturated actuator is considered in this paper. Sliding surface matrix is obtained using parameterized Riccatti equation. The proposed surface ensures that control limits are respected in a region of state space. This region can be made sufficiently large by choosing appropriate value of design parameters.
Deepak Fulwani, B Bandyopadhyay
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Control reconfiguration with actuator rate saturation

Proceedings of 1995 American Control Conference - ACC'95, 2005
Online system identification and online optimization is used to maximize aircraft tracking performance before and after control surface failure, yet prevent departure. The online optimization consists of receding horizon/model predictive optimal control with one-step-ahead actuator rate constraint enforcement.
M. Pachter, P.R. Chandler, M. Mears
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Constraints on inputs: actuator saturation

2012
This chapter is concerned with designing controllers for linear systems subject to input saturation with the purpose of achieving internal stabilization. This is a prelude to most of the subsequent chapters, and presents basic problem statements of global and semi-global internal stabilization, necessary and sufficient conditions under which such a ...
Ali Saberi, Anton A. Stoorvogel, Peddapullaiah Sannuti   +2 more
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Actuator saturation avoidance in overactuated systems

2004 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS) (IEEE Cat. No.04CH37566), 2005
The presence of redundant actuators in dynamic systems increases system efficiency and capability. An example of this increased capability is avoidance of actuator saturation at critical moments. Defining a system maximum efficiency function, this paper transforms the problem of avoiding actuator saturation into an optimization problem with the ...
M. Naghshineh, M. Keshmiri
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Assisting saturated control for a linear system with saturating actuators

IECON '98. Proceedings of the 24th Annual Conference of the IEEE Industrial Electronics Society (Cat. No.98CH36200), 2002
For a linear system with saturating actuators, a new control scheme, AS (assisting saturated) control is proposed. The AS control has a modified form of an ARE (algebraic Riccati equation) based saturating control in the case that some control input channels are not saturated.
null Hyungpil Moon, null Wan-Kyun Chung, null Youngil Youm, null Il-Hong Suh   +3 more
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Actuator Saturation and Control System Performance

1993 American Control Conference, 1993
Lyapunov's Direct Principle is applied to the problem of establishing bounds of convergence which result from the saturation of actuators. The treatment is applicable to those cases for which a linear time invariant nominal model is appropriate. The results are demonstrated with a four-state example.
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Active Noise Control Algorithm with Saturated Actuator

INTER-NOISE and NOISE-CON Congress and Conference Proceedings, 2021
Active noise control system has received its attention in various technical field such as headphone, motor vehicle, etc. Meanwhile, filtered-x least mean square (FxLMS) algorithm is conventional linear algorithm used in active noise control system.
Hakjun Lee, Youngjin Park
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