22 papers · ranked by Valyu relevance
Jianqi Chen, Qi Tian, Jie Chen
In this paper, we first study the robust stability problem for discrete-time linear time-invariant systems under stochastic multiplicative uncertainties. Those uncertainties could be are susceptible to describing transmission errors, packet drops, random delays, and fading phenomena in networked control systems. In its…
Bassam Bamieh, Maurice Filo
—We consider linear time invariant systems with exogenous stochastic disturbances, and in feedback with structured stochastic uncertainties. This setting encompasses linear systems with both additive and multiplicative noise. Our concern is to characterize second-order properties such as mean-square stability and…
Ling Zhang
The main purpose of this paper is to investigate the strong convergence and exponential stability in mean square of the exponential Euler method to semi-linear stochastic delay differential equations (SLSDDEs). It is proved that the exponential Euler approximation solution converges to the analytic solution with the…
Pengfei Wang, Emilia Fridman
This paper presents a constructive finite-dimensional output-feedback design for semilinear dimensional ( ≥ 2) heat equations with boundary actuation and sensing. A key challenge in high dimensions is the slower growth rate of the Laplacian eigenvalues. The novel features of our modaldecomposition-based design, which…
Sai Pushpak, Amit Diwadkar, Umesh Vaidya
In this technical note, we study the mean square stability-based analysis of stochastic continuous-time linear networked systems. The stochastic uncertainty is assumed to enter multiplicatively in system dynamics through input and output channels of the plant. Necessary and sufficient conditions for mean square…
Junhui Li, Jieying Lu, Weizhou Su
This paper addresses the mean-square optimal control problem for a class of discrete-time linear systems with a quasi-colored controldependent multiplicative noise via output feedback. The noise under study is novel and shown to have advantage on modeling a class of network phenomena such as random transmission delays.…
Pengfei Yang, Yangwang Fang, Youli Wu, Yunxia Liu + 2 more
'Yilun Shang'] In this paper, a fast smooth second-order sliding mode control is presented for a class of stochastic systems with enumerable Ornstein-Uhlenbeck colored noises. The finite-time mean-square practical stability and finite-time mean-square practical reachability are first introduced. Instead of treating the…
Marwa Hassan
The increasing reliance on inverter-based renewable energy sources in smart grids makes closed-loop stability highly sensitive to communication-induced uncertainties, including time-varying delays, sampling jitter, and packet loss. Conventional sampled-data and delay-dependent controllers typically address these…
Yu Zhang, Longsuo Li
In this paper, we concern stability of numerical methods applied to stochastic delay integro-differential equations. For linear stochastic delay integro-differential equations, it is shown that the mean-square stability is derived by the split-step backward Euler method without any restriction on step-size, while the…
Huan Luo, Yinhe Wang, Ruidian Zhan, Xuexi Zhang + 7 more
'Senquan Yang' 'Quanmin Zhu' 'Giuseppe Fusco' 'Jing Na' 'Weicun Zhang' 'Ahmad Taher Azar'] This paper investigates the cluster-delay mean square consensus problem of a class of first-order nonlinear stochastic multi-agent systems with impulse time windows. Specifically, on the one hand, we have applied a discrete…
Farayed Ahamed Nabil, Abu Darda, Ehsanul Islam, Ferdaus Mohd Altaf Hossain + 1 more
Marburg virus (MARV) is a highly pathogenic filovirus that causes hemorrhagic fever with a high mortality rate, with very limited treatment options. The urgent need for targeted antiviral agents emphasizes the importance of structure-based drug discovery approaches. The present study aimed to evaluate the antiviral…
Noah Olsman, Ania-Ariadna Baetica, Fangzhou Xiao, Yoke Peng Leong + 2 more
A common feature of both biological and man-made systems is the use of feedback to control their behavior. In this paper, we explore a particular model of biomolecular feedback implemented using a sequestration mechanism. This has been demonstrated to implement robust perfect adaption, often referred to as integral…
Authors not listed
Cell-free biosynthesis (CFB) is an efficient and environmentally friendly method to synthesize molecules such as pharmaceuticals, biochemicals, and biofuels through the in vitro use of enzyme cascades. These enzymes often require redox cofactors to drive chemical reactions. Natural redox cofactors (NAD(P)H) are…
Authors not listed
Metastable states and the conformational transitions in between them are key to understanding dynamical behaviour and function of large-scale molecular systems. By combining basic dimensionality reduction techniques with a state-of-the art approximation of the Koopman operator associated to molecular dynamics…
Philipp Böttcher, Dirk Witthaut, Leonardo Rydin Gorjão
Dynamic stability is imperative for the operation of the electric power system. This article provides analytical results and effective stability criteria focusing on the interplay of network structures and the local dynamics of electric machines. The results are based on an extensive linear stability analysis of the…
Hendrik Reimann, Sjoerd M. Bruijn
The walking human body is mechanically unstable. Loss of stability and falling is more likely in certain groups of people, such as older adults or people with neuromotor impairments, as well as in certain situations, such as when experiencing conflicting or distracting sensory inputs. Stability during walking is often…
Igor Gindin, Miri Benyamini, Miriam Zacksenhouse, Constantinos I. Siettos
Stability is analyzed for LTI systems with time-invariant observer and controller gains, L and K. In that case, Eqs (16-1)$(1)$, (16-2)$(3)$ and (16-3)$(9)$ can be combined to describe the LTI dynamics of the overall state x o v ( t - τ ) = [ x ( t - τ ) ′ x ^ ( t - τ ) ′ ] ′: x ˙ o v ( t - τ ) = A o x o v ( t - τ ) +…
Weronika Potok, Onno van der Groen, Sahana Sivachelvam, Marc Bächinger + 3 more
Stochastic Resonance (SR) describes a phenomenon where an additive noise (stochastic carrier-wave) enhances the signal transmission in a nonlinear system. In the nervous system, nonlinear properties are present from the level of single ion channels all the way to perception and appear to support the emergence of SR.…
Zhen Wang, Kaihua Xi, Aijie Cheng, Hai Xiang Lin + 1 more
'Jan H. van Schuppen'] How to determine the vector of power supplies of a stochastic power system for the next short horizon, such that the probability is less than a prespecified value that any phase-angle difference of a power line of the power network exits from a safe set? The power system is modelled such that the…
Yoshiharu Mukouyama, Kenya Tanaka, Shuji Nakanishi, Yoshihiro Nakato
The present work reveals that a prebiotic chemical system can generate self-organizing ability that leads to highly ordered structures and an active character such as free independent harmonious behavior. This result is the properties of natural things that have long been overlooked since Darwin’s theory of evolution…
Xinqiang Ding, John Drohan
A common approach for computing free energy differences among multiple states is to build a perturbation graph connecting the states and compute free energy differences on all edges of the graph. Such perturbation graphs are often designed to have cycles. Because free energy is a function of states, the free energy…
Kevin Robben, Christopher Cheatum
We report a comprehensive study of the efficacy of least-squares fitting of multidimensional spectra to generalized Kubo lineshape models and introduce a novel least-squares fitting metric, termed the Scale Invariant Gradient Norm (SIGN), that enables a highly reliable and versatile algorithm. The precision of…