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In this paper we address two fault detection problems for Boolean control networks (BCNs). We assume that the BCN may exhibit only two possible configurations, a non-faulty and a faulty one. The fault is simply described as the switching from the non-faulty configuration to the faulty one, and we assume that the BCN cannot autonomously recover from the fault, unless some external intervention restores...
This paper presents circuit topology, control, and application of the next-generation high-power converters that are characterized by combing the latest power semiconductor device/circuit technologies with the latest high-speed, highperformance digital control/sensor technologies. In particular, attention is paid to experimental results obtained from different downscaled systems designed, constructed,...
In this talk, we give an introductory overview of characteristic modeling and characteristic model based control. First, we review its basic concept, key features, and underlying mechanism. Then, we overview the controller design process based on characteristic model. In order to demonstrate the practicability of characteristic model and the superior performance of the closed-loop control system under...
The Great Eastern Japan Earthquake was the first disaster where many robotic systems were used for disaster response and recovery. It is expected that robotics becomes an essential solution in the near future. In this paper, the state of art of disaster robotics, gaps for actual use, and efforts for promoting social implementation are introduced.
This article investigates the control problem of rejection and tracking unknown sinusoidal signals for linear timeinvariant systems. The derived controller is in terms of state-derivative feedback since the derivative of the state rather than the state can be directly measured in some cases. Meanwhile, in order to reject and track the unknown sinusoidal signals simultaneously, we identify their models,...
In this paper, we primarily address the impact on consensus of multi-agent systems by incorporating the equality constraint. Both linear and certain form of nonlinear constraints are considered. In order to visualize the impact, the convergence rate over a strongly connected graph is proposed for both proposed linear and nonlinear consensus algorithms. In addition, for certain cases, the consensus...
This paper uses a new matrix analysis tool, the semi-tensor product of matrices (STP), to investigate the problem of searching k-internally stable set (k-ISS) and k-maximum internally stable set (k-MISS) of graphs, which serve as mathematical models of analizing many concrete realworld problems such as the k-track assignment problem. By introducing a characteristic vector for vertex subsets of graphs...
This paper presents a multiple routes planning algorithm based on particle swarm algorithm (PSO) and hierarchical clustering to overcome the problem of the sensitivity of k-means clustering to the initial clustering center. Firstly, numerous feasible routes are initialed by PSO. Secondly, the model of multiple routes planning based on hierarchical clustering algorithm is designed and the hierarchical...
This paper studies a dynamic state estimation problem for power systems, which can be seen as the quasi-static systems. The state vector of each subsystem (called node) in power networks is expressed by measurements. Based on a distributed maximum a posteriori (MAP) estimation technique, a fully distributed state estimation method is presented to update the local state at each time instant. Also,...
Active Disturbance Rejection Control (ADRC) is a quiet different design concept that shows much promise in obtaining a consistent response in a control system with many uncertainties. For the lack of frequency-domain analysis, in this paper, starting from the frequency domain methods, the tracking ability of linear extended state observer (LESO) and the disturbance rejection quality of linear ADRC...
This paper investigates the problem of stabilization and L1-gain performance of switched positive linear system, and actuator saturation is taken into account. Average dwell time approach and convex hull technique are employed, and sufficient conditions of stabilization and L1-gain performance of the closed-loop system are proposed by the state feedback control. Finally, a numerical example is given...
The working mechanism of vertical mill system and the classification mechanism of the separator are analyzed at the same time. Based on the previous research results, the problems of modeling and control for grinding process are studied in details. By using the data information which obtained from the working process, modeling and control strategy are reviewed. By analyzing the process of grinding...
In this paper, the PD Backstepping control problem is investigated for two-wheeled inverted pendulum. A nonlinear model with two states is given which is proposed to keep stability at upright position and track the specified position. Backstepping controller is used to generate the law with measured states and ensures the convergence towards zero of the angle tracking error. Furthermore, PD controller...
This paper investigates an unknown input observer design for a large class of linear systems with unknown inputs and commensurate delays. A Luenberger-like observer is proposed by involving only the past and actual values of the system output. Sufficient conditions are given to guarantee the existence of such a Luenberger-like observer.
This paper analyses the generalized H2 performance for a class of continuous-time periodic piecewise linear systems with possibly non-Hurwitz subsystems. A sufficient criterion is proposed in terms of matrix inequalities by employing a time-varying Lyapunov function which is formulated with periodic a continuous linear time-varying Lyapunov matrix. The Lyapunov function deceases non-monotonically...
In this paper, sufficient conditions for controllability and observability of second-order time-varying linear systems are proposed in terms of the system coefficient matrices. The controllability and observability of satellite orbital system based on T-H equation are obtained by the relevant criteria we proposed.
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