Zhen Zhu

ORCID: 0000-0002-6140-1022
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About
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Research Areas
  • Advanced Control Systems Design
  • Fractional Differential Equations Solutions
  • Stability and Control of Uncertain Systems
  • Atmospheric and Environmental Gas Dynamics
  • Matrix Theory and Algorithms
  • Climate variability and models
  • Extremum Seeking Control Systems
  • Smart Grid Security and Resilience
  • Network Security and Intrusion Detection
  • Sparse and Compressive Sensing Techniques
  • Advanced MRI Techniques and Applications
  • Software-Defined Networks and 5G
  • Vehicle emissions and performance
  • Integrated Energy Systems Optimization
  • Caching and Content Delivery
  • Environmental and Agricultural Sciences
  • Atmospheric chemistry and aerosols
  • Cooperative Communication and Network Coding
  • Plant Water Relations and Carbon Dynamics
  • Human Mobility and Location-Based Analysis
  • Neural Networks Stability and Synchronization
  • Image and Video Quality Assessment
  • Power System Optimization and Stability
  • Energy and Environment Impacts
  • Control Systems and Identification

Shanghai Jiao Tong University
2013-2025

Ministry of Education of the People's Republic of China
2021-2025

Huazhong University of Science and Technology
2024

Zhejiang Lab
2021-2023

Hong Kong Polytechnic University
2023

Pandora (United States)
2018-2023

Chinese Academy of Sciences
2000-2021

University of Chinese Academy of Sciences
2013-2021

Institute of Acoustics
2021

Stanford University
2018

Abstract. As a unique geological and geographical unit, the Tibetan Plateau dramatically impacts world's environment especially controls climatic environmental changes in China, Asia even Northern Hemisphere. Plateau, therefore, provides field laboratory for studying global change. With support from various agencies People's Republic of Observation Research Platform (TORP) is now implementing. Firstly background establishment TORP, establishing monitoring plan long-term scale (5–10 years)...

10.5194/hess-13-1103-2009 article EN cc-by Hydrology and earth system sciences 2009-07-09

In compressed sensing, one takes samples of an N -dimensional vector using matrix A , obtaining undersampled measurements . For random matrices with independent standard Gaussian entries, it is known that, when k -sparse, there a precisely determined phase transition: for certain region in the ( )-phase diagram, convex optimization typically finds sparsest solution, whereas outside that region, fails. It has been shown empirically same property—with transition location—holds wide range...

10.1073/pnas.1219540110 article EN Proceedings of the National Academy of Sciences 2012-12-31

ABSTRACT In the domain of systems control, robust control fractional‐order (FOSs) with ellipsoidal parameter uncertainty has received scant attention, even though is significant for quantifying and modeling uncertainties. This paper addresses gap by focusing on analysis FOSs parametric uncertainty, where fractional order delimited to range . Two distinct categories models are considered: one corresponding uncertain zero positions other pole positions. First, sufficient conditions performance...

10.1002/mma.10778 article EN Mathematical Methods in the Applied Sciences 2025-02-08

Abstract. In this study, a parameterization method based on MODIS (Moderate Resolution Imaging Spectroradiometer) data, AVHRR (Advanced Very High-Resolution Radiometer) data and in situ is introduced tested for estimating the regional evaporative fraction Λ over heterogeneous landscape. As case algorithm was applied to Tibetan Plateau (TP) area. Eight images (17 January, 14 April, 23 July 16 October 2003; 30 15 1 August 25 2007) four 2003) were used study compare winter, spring, summer...

10.5194/acp-14-1507-2014 article EN cc-by Atmospheric chemistry and physics 2014-02-11

Purpose To improve the magnetic resonance imaging (MRI) data acquisition speed while maintaining reconstruction quality, a novel method is proposed for multislice MRI from undersampled k-space based on compressed-sensing theory using dictionary learning. Theory and Methods There are two aspects to quality. One that spatial correlation among slices used by extending atoms in learning patches blocks. The other dictionary-learning scheme at resolution levels; i.e., low-resolution sparse coding...

10.1002/mrm.24734 article EN Magnetic Resonance in Medicine 2013-04-02

Robust stability problem of discrete-time fractional-order systems (DTFOSs) with interval uncertainties is investigated in this paper. Firstly, a new theorem for matrix root-clustering union-region established. Based on theorem, the regions DTFOSs are described as closed sub-regions, and sufficient conditions presented. Then, robust derived. All results obtained terms linear inequalities (LMIs) which more tractable than existing ones. Finally, numerical examples given to show that our valid...

10.1109/tcsi.2021.3053701 article EN IEEE Transactions on Circuits and Systems I Regular Papers 2021-01-29

Abstract This paper concentrates on the robust stability and stabilization problems of multi‐order fractional‐order systems (MOFOSs) with interval uncertainties. Firstly, new sufficient conditions for nominal are given, which suitable analysis controller design. Then, based above conditions, uncertain proposed. Secondly, in order to stabilize systems, state feedback controllers designed. All results form linear matrix inequalities can be applied incommensurate cases. Finally, some numerical...

10.1002/rnc.5457 article EN International Journal of Robust and Nonlinear Control 2021-02-23

In this brief, the structural stability of continuous fractional-order (FO) two-dimensional (2D) Fornasini-Marchesini (FM) first model is investigated. Firstly, bivariate polynomial-based condition equivalently transformed to be in more tractable form. Then, based on generalized KYP lemma, conditions are further reduced into feasibility problem linear matrix inequalities (LMIs). The main contribution establish LMI-based for FO 2D FM model. results can applied cases with <inline-formula...

10.1109/tcsii.2021.3105743 article EN IEEE Transactions on Circuits & Systems II Express Briefs 2021-08-18

The manuscript investigates the problem of structural stability continuous-discrete fractional-order 2D Roesser model. This model includes one continuous dimension with <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$\alpha \in (0,2)$ </tex-math></inline-formula> and discrete dimension. By equivalent transform generalized Kalman–Yakubovič–Popov lemma, necessary sufficient conditions for are established....

10.1109/tcsii.2021.3131183 article EN IEEE Transactions on Circuits & Systems II Express Briefs 2021-11-29

Abstract This paper investigates the robust stability and stabilization problems of continuous‐discrete fractional‐order two‐dimensional Fornasini–Marchesini second model with interval uncertainties. Firstly, for nominal , unified LMI‐based conditions are presented by general description stable root‐clustering sets. Secondly, these transformed to be more tractable stabilization, LMI/BMI‐based established via state feedback controllers. Meanwhile, one algorithm is proposed solve BMI‐based...

10.1002/asjc.3380 article EN Asian Journal of Control 2024-04-17

In this paper, the problem of one-to-one unmanned fighter air-combat autonomous maneuver decision including missile evasion is considered. Firstly, model established by reducing 3-dimensional space into 2-dimensional planes. Considering that Twin Delayed Deep Deterministic policy gradient algorithm (TD3) can deal with continuous control problems and has strong robustness, an improved TD3 presented to realize decision. To increase training efficiency, a new loss term between recommended...

10.1109/cac51589.2020.9327310 article EN 2020-11-06

This brief aims to analyze the stability and stabilization conditions for fractional-order systems with distributed delays (FOSDDs). Firstly, an order-dependent condition nominal FOSDDs is obtained through utilizing small gain theorem. Secondly, robust norm-bounded uncertainties derived using proposed condition. Furthermore, state feedback controllers are designed robustly stabilize uncertainties. The achieved results presented linear matrix inequalities (LMIs). Lastly, two numerical...

10.1109/tcsii.2023.3323287 article EN IEEE Transactions on Circuits & Systems II Express Briefs 2023-10-10

Abstract As digital streaming media matures, consumers and publishers have become interested in short duration ads (i.e., &lt;10 s). However, previous research on memory retention for short‐duration ad content utilized video or audio–video experiences where attention is directed toward the ad. Therefore, it unclear whether this study relevant to audio‐only content, unknown if similar may be achieved when not incidental memory). To of audio ads, participants were recruited play a driving game...

10.1002/mar.21558 article EN Psychology and Marketing 2021-08-02

This paper focuses on the structural stability and stabilisation of continuous-discrete fractional-order two-dimensional Fornasini-Marchesini first model. The sufficient necessary conditions are given in polynomial form at first. Secondly, to make problem solvable, based property Kronecker product Generalized–Kalman–Yakubovich–Popov Lemma, new established linear matrix inequalities. Thirdly, with help Projection obtained after introducing a state feedback controller, which can be solved an...

10.1080/00207721.2022.2122901 article EN International Journal of Systems Science 2022-10-03

Based on the computational fluid dynamics method, simulating actual working conditions of turbines, internal vapor–liquid–solid flow fields (total pressure and volume fraction vapor phase) test turntable surface with cavitation source holes are numerically calculated under combined erosion sandy water erosion. The erosions different materials (Q235, 45#, 40Cr, HT200) tested reconstructive rotary wear rig. scanning electron microscopic photos three-dimensional morphologies material specimens...

10.1177/1350650115587335 article EN Proceedings of the Institution of Mechanical Engineers Part J Journal of Engineering Tribology 2015-05-27

The named-data networking (NDN) has shown its data delivery efficiency advantage for the smart grid communications. However, NDN, fast re-re-route using detours been rarely studied in minimizing link recovery time (LRT), which is critical ensuring accuracy of state estimation grid. In addition, existing approaches involved with plane are not designed NDN. this paper, we investigate a novel proactive re-route on joint paths mechanism NDN (FPRR-NDN) FPRR-NDN performs distributed control that...

10.1109/comsnets56262.2023.10041321 article EN 2023-01-03

The <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$H_{\infty }$ </tex-math></inline-formula> control problem of fractional-order continuous-discrete 2D Roesser models in the finite frequency is investigated this brief. Firstly, based on frequency-partitioning method and generalized Kalman–Yakubovi notation="LaTeX">$\check {\text {c}}$ –Popov lemma, bounded real lemmas form linear matrix inequalities...

10.1109/tcsii.2023.3264548 article EN IEEE Transactions on Circuits & Systems II Express Briefs 2023-04-05

ABSTRACT This paper investigates the stability and stabilization of fractional‐order systems with mixed delays (FOSMDs), including discrete distributed delays. At first, an order‐dependent condition for FOSMDs is derived use small gain theorem. Then, based on condition, a robust uncertain polytopic uncertainties proposed. Next, designed state feedback controllers, last, several numerical examples are put forward to manifest effectiveness obtained results.

10.1002/mma.10668 article EN Mathematical Methods in the Applied Sciences 2024-12-25
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