Huijun Gao - IEEE Xplore Author Profile

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Accurate and robust geo-localization in all-weather conditions is essential for enabling autonomous vehicles and delivery robots to offer uninterrupted mobility services in the real world. In this paper, we propose the first camera and radar fusion based geo-localisation method that is robust to all-weather conditions. The core of the proposed method is to leverage the rich semantics information i...Show More
Signal filters are the foundation of many industrial fields, especially in high-performance motion control. However, commonly used low-pass filters exhibit serious phase lag, which degrades the performance of the whole system. This paper proposes a filter method that uses information from higher-order sensors. The proposal is an interfusion of several sensors. This method is based on the idea of p...Show More
In wireless sensor networks, missing sensor data is inevitable due to the inherent characteristic of wireless sensor networks, and it causes many difficulties in various applications. To solve the problem, the best way is to estimate the missing data as accurately as possible. In this paper, for the data of changing smoothly, a temporal correlation based missing data estimation algorithm is propos...Show More
This paper deals with the modeling and parameter tuning of a spar-type floating wind turbine with a tuned mass damper (TMD) installed in nacelle. Firstly, a mathematical model for the system surge-heave-pitch motion is established based on first principles. Secondly, different parameter tuning methods are adopted to find the optimal TMD parameters for load reduction. Thirdly, nonlinear wind turbin...Show More
The non-fragile sliding mode tracking control design problem for a flexible air-breathing hypersonic vehicles (FAHVs) is investigated in this paper. A linearized model is constructed with respect to a trim point for the nonlinear, dynamically coupled simulation model of the FAHVs with external disturbance, then a reference model is designed and a tracking error model is proposed. An integral slidi...Show More
For a class of switched discrete-time linear systems, a state dependent switching law with dwell time is designed to make the overall system asymptotically stable. A main feature is that the Lyapunov-like function may not monotonically decreasing in both time-driven and state-driven periods, and this feature allows the proposed stabilizing switching law being of lower switching frequency in contra...Show More
This paper investigates the problem of robust sampled-data H∞ control for active vehicle suspension systems. By using an input delay approach, the active vehicle suspension system with sampling measurements is transformed into a continuous-time system with a delay in the state. The transformed system contains possibly non-differentiable timevarying state delay. The controller design is cast into a...Show More
This paper proposes an improved delay-range-dependent stability condition for linear systems with an interval time-varying delay, which satisfies h1 ≤ d(t) ≤ h2. The improvement is achieved by representing d(t) as h1 + h(t) with 0 ≤ h(t) ≤ h2 − h1, and then constructing a novel Lyapunov-Krasovskii functional with the idea of partitioning the constant time delay. It is illustrated via a numerical e...Show More
This paper investigates the problem of Hinfin estimation for discrete-time systems with a time-varying delay in the state and parameter uncertainties residing in a polytope. A new filter design procedure is proposed, which is developed based on homogeneous polynomially parameter-dependent matrices of an arbitrary degree. A numerical example is given to illustrate the effectiveness and advantage of...Show More
This paper investigates the problem of H∞ fuzzy control of nonlinear systems under unreliable communication links. The nonlinear plant is represented by a Takagi-Sugeno fuzzy model, and the control strategy takes the form of parallel distributed compensation. The communication links, existing between the plant and controller, are assumed to be imperfect (that is, data-packet dropouts occur intermi...Show More
In this paper, the problems of stability and stabilization of switched linear discrete-time systems with polytopic uncertainties are investigated. A switched parameter-dependent quadratic Lyapunov function is proposed, by which the stability conditions are derived and formulated in terms of a set of linear matrix inequalities. Based on the stability result, control synthesis is then considered and...Show More
This paper is concerned with the problems of delay-dependent robust Hscrinfin and Lscr2-Lscrinfin filtering for a class of linear parameter varying (LPV) systems with both discrete and distributed delays. The distributed delays are assumed to appear in both the state and measurement equations. Our attention is focused on the design of delay-dependent robust full-order filters, which guarantee the ...Show More
This paper investigates robust fault detection and isolation problem for a class of discrete-time Markovian jump systems with mode-dependent time-delays and norm-bounded uncertainties. Attention is focused on constructing the residual generator based on the filter whose parameters depend on the system modes and formulating fault detection and isolation filter design as H/sub /spl infin// filtering...Show More
This paper investigates the problem of stabilization for a Takagi-Sugeno (T-S) fuzzy system with nonuniform uncertain sampling. The sampling is not required to be periodic, and the only assumption is that the distance between any two consecutive sampling instants is less than a given bound. By using the input delay approach, the T-S fuzzy system with variable uncertain sampling is transformed into...Show More
This paper investigates robust fault detection problem for a class of discrete-time LPV systems with time-varying delays. Attention is focused on constructing the residual generator based on the filter whose parameters matrices depend on time-varying parameters, and formulating the design of fault detection filters as H/sub /spl infin// filtering problem. The objective is to make the difference be...Show More
The robust stability and robust sliding mode control problems are studied for a class of linear distributed delay systems with polytopic-type uncertainties in this paper by applying the parameter-dependent Lyapunov functional approach combining with a new method of introducing some relaxation matrices and tuning parameters, which can be chosen properly to lead to a less conservative result. First,...Show More
A delay-dependent robust Hinfin estimation technique is proposed for linear uncertain systems with multiple time-varying state delays. The uncertain parameters are supposed to reside in a polytope and the attention is focused on the design of robust filters which are dependent of the size of delay and guarantee a prescribed noise attenuation level. The admissible filters can be obtained from the s...Show More
This paper provides complete results on the filtering problem for a class of nonlinear systems described by a discrete-time state equation containing a repeated scalar nonlinearity as in recurrent neural networks. Both induced l/sub 2/ and generalized H/sub 2/ indexes are introduced to evaluate the filtering performance. For a given stable discrete-time systems with repeated scalar nonlinearities,...Show More
This paper investigates the stabilizability of linear systems with closed-loop positivity. A necessary and sufficient condition for the existence of desired state-feedback controllers guaranteeing the resultant closed-loop system to be asymptotically stable and positive is obtained. Both continuous and discrete-time cases are considered, and all of the conditions are expressed as linear matrix ine...Show More
This paper investigates the problem of robust L/sub 1/ model reduction for continuous-time uncertain stochastic systems with state delay. For a given mean-square stable system, our purpose is to construct reduced-order systems, such that the error system between the two models is mean-square asymptotically stable and has a guaranteed L/sub 1/ performance. The peak-to-peak gain criterion is first e...Show More
This paper revisits the problem of mixed H/sub 2//H/sub /spl infin// filtering for polytopic discrete-time systems. Differing from previous results in the quadratic framework, the filter design makes full use of the parameter-dependent stability idea: Not only is the filter dependent of the parameters (which are assumed to reside in a polytope and be measurable online), but in addition, the Lyapun...Show More
The problem of Hankel norm model reduction for discrete-time systems with time-varying state delay is investigated. For a given stable system, this paper focuses on constructing stable reduced-order models under the Hankel norm error criterion. Two different approaches are proposed to solve this problem. One is based on the cone complementarity linearization idea, which casts the model reduction i...Show More
This paper considers the problem of robust stabilization for stochastic time-delay systems with convex polytopic uncertainties. Sufficient conditions for the solvability of the problem are obtained by using parameter-independent and parameter-dependent Lyapunov functional, respectively. It is shown that the result derived by a parameter-dependent Lyapunov functional is less conservative. A desired...Show More
This paper is concerned with the problem of stabilizing controller design for 2-D systems with Markovian jump parameters. The mathematical model of 2D jump systems is established upon the well-known Roesser model, and sufficient conditions are obtained for the existence of desired controllers in terms of linear matrix inequalities (LMIs), which can be readily solved by available numerical software...Show More
This paper investigates the problem of robust H/sub /spl infin//, and l/sub 2/-l/sub /spl infin// filtering for a class of uncertain nonlinear discrete-time systems with multiple state delays. It is assumed that the parameter uncertainties appearing in all the system matrices reside in a polytope and the nonlinearities entering into both the state and measurement equations satisfy global Lipschitz...Show More