نتایج جستجو برای: کنترلگر lqg

تعداد نتایج: 1023  

2009
Bruce L. Dixon Richard E. Howitt

The empirical problem of natural resource management is typically the intertemporal allocation of product flows and resource stocks under uncertainty. National forest harvest scheduling is conceptualized in this study as a stochastic optimal control problem. In theory, optimal solutions to most stochastic control problems exist, but required computer costs are excessive even for problems of mod...

Journal: :CoRR 2017
Vasileios Tzoumas Luca Carlone George J. Pappas Ali Jadbabaie

Linear-Quadratic-Gaussian (LQG) control is concerned with the design of an optimal controller and estimator for linear Gaussian systems with imperfect state information. Standard LQG assumes the set of sensor measurements, to be fed to the estimator, to be given. However, in many problems, arising in networked systems and robotics, one may not be able to use all the available sensors, due to po...

Journal: :Physical Review Letters 2021

The lack of rotating black hole models, which are typically found in nature, loop quantum gravity (LQG) substantially hinders the progress testing LQG from observations. Starting with a nonrotating as seed metric, we construct spacetime using revised Newman-Janis algorithm. solution is nonsingular everywhere and it reduces to Kerr asymptotically. In different regions parameter space, describes ...

2004
Guoming Zhu Robert E. Skelton

Qptinnrrni controller designs are developed which take account of the digital round-of€ errors in the controller implementation and in the A/D and D/A converters for the case of uniform skewed sampling. Skewing the control samples allows the computational delay in the control computer t o be accommodated in the optimization problem. These results provide a very general extension to the LQG theo...

2007
Andreas Enge Pierrick Gaudry

The discrete logarithm problem in Jacobians of curves of high genus g over finite fields Fq is known to be computable with subexponential complexity Lqg (1/2, O(1)). We present an algorithm for a family of plane curves whose degrees in X and Y are low with respect to the curve genus, and suitably unbalanced. The finite base fields are arbitrary, but their sizes should not grow too fast compared...

بهنام معتکف ایمانی, سید حسن قرشی

در این مقاله مدل دینامیکی دستگاه آزمون خستگی سروهیدرولیک، بر مبنای روش جعبه خاکستری برای نمونه‌های مواد مرکب شناسایی شده و بر مبنای مدل خطی عدم قطعیت محاسبه می‌گردد. کنترلگر مقاوم همزمان پسخور و پیشرو به همراه کنترلگر تطبیقی بر مبنای روش تنظیم بهره، برای تنظیم بهره سیستم حلقه بسته، با هدف حداقل‌سازی خطا بین دامنه سیگنال فرمان و خروجی سیستم طراحی می‌شود. طبق تحلیل پاسخ فرکانسی سیستم حلقه بسته، ا...

Journal: :Universe 2022

A rigorous implementation of the Wheeler–Dewitt equations was derived in context Loop Quantum Gravity (LQG) and coined Spin Dynamics (QSD). The Hamiltonian constraint QSD criticised as being too local to prevent “propagation” canonical LQG. That criticism based on an algorithm developed for generating solutions Wheeler–DeWitt equations. fine details that could not be worked out because makes cr...

Journal: :Journal of Cosmology and Astroparticle Physics 2022

One of remarkable features loop quantum gravity (LQG) is that it can provide resolutions to both the black hole and big bang singularities. In mini-superspace approach based on polymerization procedure in LQG, a corrected metric constructed. This also known as self-dual spacetime since form invariant under exchange $r \to a_0/r$ with $a_0$ being proportional minimum area LQG $r$ standard radial...

Journal: :Physics 2022

The Barbero-Immirzi parameter ($\gamma$) is introduced in loop quantum gravity (LQG) whose physical significance still a biggest open question; because of its profound traits. In some cases, it real-valued; while, complex-valued other cases. This emerges out the process denoting Lorentz connection with non compact group $SO(3,1)$ form complex values rotations, either $SO(3)$ or $SU(2)$. Initial...

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