In this paper, we present one entropy partition method and its ideal requirement for partition result, then apply this method in TCM (Traditional Chinese Medicine) data without understanding any expectation of the obj...
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ISBN:
(纸本)1424406048
In this paper, we present one entropy partition method and its ideal requirement for partition result, then apply this method in TCM (Traditional Chinese Medicine) data without understanding any expectation of the objectives. We propose the conception of N-class correlation in order to solve the computational problem successfully. The idea of RFS (relatives and friends set) and general filtering are also helpful to further data mining research. The result achieves a good explanation in TCM theory, thus validates the syndromes existence in western medicine. It also shows that this method is rather available especially in dealing with the complex, nonlinear, large-scale data
It is a very demanding task to design a reliable fingerprint matching approach with high accuracy and speed. An algorithm based on the novel structure combining the singular point with its neighborhood minutiae propos...
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After modeling distributed embedded systems using time Petri nets based on resources, scheduling analysis is complex. Therefore, the combination and decomposition of scheduling sequences are introduced to simplify the...
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After modeling distributed embedded systems using time Petri nets based on resources, scheduling analysis is complex. Therefore, the combination and decomposition of scheduling sequences are introduced to simplify the analysis of complex scheduling sequences. Then two simplification rules are introduced to simplify the time constriction of every transition in scheduling sequence. At last, all properties of scheduling sequence can be gotten by comparing time constriction and deadline interval of every transition
This paper presents a multiple layers sliding mode controller for a class of under-actuated systems. The structure characteristic of these systems, such as inverted pendulum(s) systems, is that they are made up of sev...
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This paper presents a multiple layers sliding mode controller for a class of under-actuated systems. The structure characteristic of these systems, such as inverted pendulum(s) systems, is that they are made up of several subsystems. Firstly, the given system is divided into several subsystems. Then, one subsystem is selected to construct the first layer sliding mode surface and it is used to construct the second layer sliding mode surface with the sliding mode surface of another subsystem. This process continues till all states of all subsystems are included. The controller is designed according to this multiple layers structure. The asymptotic stability of the entire sliding mode surfaces is proved theoretically. Simulation results show the validity of this method with limited control force
A dynamical adaptive sliding mode control (DASMC) algorithm is presented and applied to output tracking control of ship steering system, which is nonlinear with linearly parameterized uncertainties. The control design...
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A dynamical adaptive sliding mode control (DASMC) algorithm is presented and applied to output tracking control of ship steering system, which is nonlinear with linearly parameterized uncertainties. The control design benefits from both the robustness of sliding mode control and adaptiveness of backstepping method. Simulation results show that the control algorithm has good robustness to uncertainties and undesirable disturbances, and good performance with substantially reduced chattering in the sliding mode
In this paper, a new method for robust Lagrange stability analysis of a class of nonlinear discrete-time systems is proposed. Both the linear part structured and unstructured uncertainties are considered in a unified ...
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In this paper, a new method for robust Lagrange stability analysis of a class of nonlinear discrete-time systems is proposed. Both the linear part structured and unstructured uncertainties are considered in a unified way. Sufficient, conditions for robust Lagrange stability are established in terms of linear matrix inequalities (LMIs). With this LMI approach, the largest allowable magnitude of the admissible perturbation was given explicitly by solving a, generalized eigenvalue minimization problem which is essentially a convex optimization problem and numerically efficient, illustrative example confirmed the efficiency and accuracy of the proposed approach
In this paper, some special decentralized control problems are addressed for discrete-time interconnected systems. First it is pointed out that some subsystems must be unstable to ensure stability of the overall syste...
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In this paper, some special decentralized control problems are addressed for discrete-time interconnected systems. First it is pointed out that some subsystems must be unstable to ensure stability of the overall system in some special cases. Then a special kind of decentralized control problem is studied. This kind of problem can be viewed as harmonic control among independent subsystems. Research results show that two unstable systems can generate a stable system through some effective cooperations. In addition, linear matrix inequality based decentralized controller design method is also given by using parameter-dependent Lyapunov function method developed for the study of robust stability. Two examples are given to illustrate the results.
In this paper, properties of dichotomy for nonlinear systems with norm-bounded uncertainty are considered. By using some results of H ∞ theory and method of linear matrix inequality (LMI) some criterions of testing ...
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In this paper, properties of dichotomy for nonlinear systems with norm-bounded uncertainty are considered. By using some results of H ∞ theory and method of linear matrix inequality (LMI) some criterions of testing robust dichotomy of uncertain nonlinear systems are given. An approach of designing state feedback controller guaranteeing dichotomy of closed loop systems with norm-bounded uncertainty is proposed. The given results are applied to Chua's circuit. A numerical algorithm of designing a controller guaranteeing dichotomy of the closed-loop system is presented which enlarges the range of some parameters.
In this paper, eight groups of chaotic attractors including hyperchaotic attractor of a four-order Chua's circuit with a piecewise-linear nonlinearity are presented and a simple method to control chaos oscillation...
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In this paper, eight groups of chaotic attractors including hyperchaotic attractor of a four-order Chua's circuit with a piecewise-linear nonlinearity are presented and a simple method to control chaos oscillation for this circuit is proposed by exploiting absolute stability theory in nonlinear systems. A linear feedback controller is derived based on linear matrix inequality (LMI). Numerical simulations are presented to illustrate the efficiency of the proposed method.
Agents and interactions between them are two key roles in modeling artificial transportation systems. This paper presents a formal theory to describe interactions between agents, which, together with the well develope...
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Agents and interactions between them are two key roles in modeling artificial transportation systems. This paper presents a formal theory to describe interactions between agents, which, together with the well developed models to describe components as agents, completes the first step towards establishing the formal structure for artificial transportation systems. By describing individual agents and the interactions between them as independent simple sequence processes and directive communication channels respectively, we models the whole system as one sequential communications system, which is one special type of Petri net. The theory is flexible enough to model diversified interactions between agents, and the resultant model possesses favorable properties. A case study of modeling road network has been conducted for the purpose of illustration
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