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    Browsing by Author "Hu, Liang"

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      • Bayesian Estimation of A Periodically-Releasing Biochemical Source Using Sensor Networks 

        Hu, Liang; Su, Jinya; Hutchinson, Michael; Liu, Cunjia; Chen, Wen-Hua (Conference)
        This paper develops a Bayesian estimation method to estimate source parameters of a biochemical source using a network of sensors. Based on existing models of continuous and instantaneous releases, a model of discrete and ...
      • COLREGS-COMPLIANT PATH PLANNING FOR AUTONOMOUS SURFACE VEHICLES: A MULTIOBJECTIVE OPTIMIZATION APPROACH 

        Hu, Liang; Naeem, W.; Rajabally, E.; Watson, G.; Mills, T.; Bhuiyan, Z.; Salter, I. (Article)
        In this paper, a multiobjective optimization framework is proposed for on-line path planning of autonomous surface vehicles (ASVs), where both collision avoidance and COLREGscompliance are taken into account. Special ...
      • A constrained optimization approach to dynamic state estimation for power systems including PMU and missing measurements 

        Hu, Liang; Wang, Zidong; Liu, Xiaohui; Rahman, I. (Article)
        In this brief, a hybrid filter algorithm is developed to deal with the state estimation (SE) problem for power systems by taking into account the impact from the phasor measurement units (PMUs). Our aim is to include PMU ...
      • Dynamic state estimation of power systems with quantization effects: a recursive filter approach 

        Hu, Liang; Wang, Zidong; Liu, Xiaohui (Article)
        In this paper, a recursive filter algorithm is developed to deal with the state estimation problem for power systems with quantized nonlinear measurements. The measurements from both the remote terminal units and the phasor ...
      • Event-Based Input and State Estimation for Linear Discrete Time-Varying Systems 

        Hu, Liang; Wang, Zidong; Han, Quing-long; Liu, Xiaohui (Article)
        In this paper, the joint input and state estimation problem is considered for linear discrete-time stochastic systems. An event-based transmission scheme is proposed with which the current measurement is released to the ...
      • A Multiobjective Optimization Approach for COLREGs-compliant Path Planning of Autonomous Surface Vehicles Verified on Networked Bridge Simulators 

        Hu, Liang; Naeem, Wasif; Rajabally, Eshan; Watson, Graham; Mills, Terry; Bhuiyan, Zakirul; Raeburn, Craig; Salter, Ivor; Pekcan, Claire (Article)
        This paper presents a multiobjective optimisation approach for path planning of autonomous surface vehicles (ASVs). A unique feature of the technique is the unification of the Convention on the International Regulations ...
      • Output Feedback Stabilization for Dynamic MIMO Semi-linear Stochastic Systems with Output Randomness Attenuation 

        Zhang, Qichun; Hu, Liang; Gow, J. A. (Conference)
        In this paper, the problem of randomness attenuation is investigated for a class of MIMO semi-linear stochastic systems. To achieve this control objective, a m-block backstepping controller is designed to stabilize the ...
      • Passivity-based Tracking Control of an Omnidirectional Mobile Robot Using Only One Geometrical Parameter 

        Ren, Chao; Ding, Yutong; Ma, Shugen; Zhu, Xinshan; Hu, Liang (Article)
        This paper presents an output feedback tracking control scheme for a three-wheeled omnidirectional mobile robot, based on passivity property and a modified generalized proportional integral (GPI) observer. The proposed ...
      • Probabilistic Decoupling Control for Stochastic Non-Linear Systems Using EKF-Based Dynamic Set-Point Adjustment 

        Zhang, Qichun; Hu, Liang (Conference)
        In this paper, a novel decoupling control scheme is presented for a class of stochastic non-linear systems by estimation-based dynamic set-point adjustment. The loop control layer is designed using PID controller where the ...
      • Recent Advances on State Estimation for Power Grids with Unconventional Measurements 

        Hu, Liang; Wang, Zidong; Liu, Xiaohui; Vasilakos, A. V.; Alsaadi, F. E. (Article)
        State estimation problem for power systems has long been a fundamental issue that demands a variety of methodologies depending on the system settings. With the recent introduction of advanced devices of phasor measurement ...
      • Robust Predictive Speed Regulation of Converter-Driven DC Motors Via A Discrete-Time Reduced-Order GPIO 

        Yang, Jun; Wu, Hao; Hu, Liang; Li, Shihua (Article)
        Converter-driven direct current (DC) motors exhibit various advantages in industry, but impose several challenges to higher-precision speed regulation in the presence of parametric uncertainties and exogenous, time-varying ...
      • State estimation under false data injection attacks: Security analysis and system protection 

        Hu, Liang; Wang, Zidong; Han, Quing-Long; Liu, Xiaohui (Article)
        The security issue in the state estimation problem is investigated for a networked control system (NCS). The communication channels between the sensors and the remote estimator in the NCS are vulnerable to attacks from ...

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