نتایج جستجو برای: tracking loop

تعداد نتایج: 240401  

Journal: :Optics express 2007
Andrew J Berglund Kevin McHale Hideo Mabuchi

We present a comprehensive theory of closed-loop particle tracking for calculating the statistics of a diffusing fluorescent particle's motion relative to the tracking lock point. A detailed comparison is made between the theory and experimental results, with excellent quantitative agreement found in all cases. A generalization of the theory of (open-loop) fluorescence correlation spectroscopy ...

2002
Nicholas Apostoloff Alexander Zelinsky

One of the more startling effects of road related accidents is the economic and social burden that they cause. In OECD countries (the 23 leading economically developed countries of the world) over 150,000 people are killed every year (44,000+ in the USA, 38,000+ in Europe and 11,000+ in Japan) at an estimated cost of US$ 500 billion. One way of combating this problem is to develop intelligent v...

Journal: :amirkabir international journal of modeling, identification, simulation & control 2015
v. azimi m. b. menhaj a. fakharian

this article presents a fuzzy robust mixed - sensitivity gain - scheduled h controller based on the loop -shaping methodology for a class of mimo uncertain nonlinear time - varying systems. in order to design this controller, the nonlinear parameter - dependent plant is first modeled as a set of linear subsystems by takagi and sugeno’s (t - s) fuzzy approach. both loop - shaping methodology and...

2003
Anas FATTOUH Olivier SENAME

In this paper, two controllers are proposed for bilateral teleoperation systems with communication time delay. The first one guarantees the tracking of slave-master outputs, while the second one guarantees the transparency. Communication time delay appears in the control loop of the second controller, and finite spectrum assignment method is used to design this controller such that the resultin...

2000
Hsuan-Yu Liu Shuenn-Der Tzeng Yi-Chuan Liu Chung-Cheng Wang Terng-Ren Hsu Terng-Yin Hsu Chen-Yi Lee

Abstraci-A dynamic ADC sampling methodology based on error-tracking loop is proposed in this paper to improve synchronized performance in DSSS baseband transceivers. To maintain the synchronized performance the ADC sampling rate is controlled by error-tracking loop to let clock offset becomes lower. For 1.8MHz clock offset based on 44MHz ADC sampling rate the BER of DSSS baseband transceivers c...

2010
Jialue Fan Xiaohui Shen Ying Wu

Model updating is a critical problem in tracking. Inaccurate extraction of the foreground and background information in model adaptation would cause the model to drift and degrade the tracking performance. The most direct but yet difficult solution to the drift problem is to obtain accurate boundaries of the target. We approach such a solution by proposing a novel closed-loop model adaptation f...

Journal: :CoRR 2004
Ramdane Hedjar Patrick Boucher

The approximate nonlinear receding-horizon control law is used to treat the trajectory tracking control problem of rigid link robot manipulators. The derived nonlinear predictive law uses a quadratic performance index of the predicted tracking error and the predicted control effort. A key feature of this control law is that, for their implementation, there is no need to perform an online optimi...

2010
Konstantinos E. Papoutsakis Antonis A. Argyros

We introduce a new method for integrated tracking and segmentation of a single non-rigid object in an monocular video, captured by a possibly moving camera. A closed-loop interaction between EM-like color-histogram-based tracking and Random Walker-based image segmentation is proposed, which results in reduced tracking drifts and in fine object segmentation. More specifically, pixel-wise spatial...

1997
Samson Million Sami Hinedi

Tliis paper evaluates the steady-state tracking performance of the soft DTTL symbol sy~d:ronizer which is a low SNR, approximation of the hyperbolic tangent, nonlinearity in the in-phase channel. The normalized s-curve, slope of the s-curve, and normalized noise density are derived and compared to the hard DTTL which is a high SNR approximation of the nonlinearity. Moreover, the symbol SNR regi...

Journal: :international journal of automotive engineering 0
bayat mojallali baghramian bayat

in this paper, a two-surfaces sliding mode controller (tssmc) is proposed for the voltage tracking control of a two input dc-dc converter in application of electric vehicles (evs). the imperialist competitive algorithm (ica) is used for tuning tssmc parameters. the proposed controller significantly improves the transient response and disturbance rejection of the two input converters while prese...

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