Hypersurface models are useful means for process monitoring for they handle data redundancy in a natural way. Within a unified framework the paper discusses application of such (linear and nonlinear static) models for...
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Hypersurface models are useful means for process monitoring for they handle data redundancy in a natural way. Within a unified framework the paper discusses application of such (linear and nonlinear static) models for data smoothing, fault detection, isolation, and reconstruction. In the linear case the approach is known as principal component analysis (PCA), in the nonlinear case neural networks can be utilized to construct the models.
Hydraulic support is a key equipment of synthesis mechanization caving coal. Now, lots of countries in the world are increasing investment on hydraulic support design, manufacture and research. This paper took ZT6500/...
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This paper addresses the controlled synchronization problem of mechanical systems subjected to a geometric unilateral constraint as well as the design of a switching coupling law to obtain synchronization. To define t...
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The paper presents a nodal technique for modeling a large Pressurized Heavy Water Reactor (PHWR). Model equations have been derived from the two group diffusion equations and validated by applying it to a benchmark pr...
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The paper addresses the problem of robust output feedback controller design with a guaranteed cost and quadratic, and parameter dependent Lyapunov function quadratic stability for linear continuous time affine systems...
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The paper addresses the problem of robust output feedback controller design with a guaranteed cost and quadratic, and parameter dependent Lyapunov function quadratic stability for linear continuous time affine systems. The proposed design methods lead to a non-iterative LMI based algorithm. Numerical examples are given to illustrate the design procedure.
The paper presents a novel approach to the adaptive control of a semi-active vehicle suspension with magnetorheological (MR) dampers. Research was carried out for a quarter-car model with two degrees of freedom and th...
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ISBN:
(纸本)9781479947287
The paper presents a novel approach to the adaptive control of a semi-active vehicle suspension with magnetorheological (MR) dampers. Research was carried out for a quarter-car model with two degrees of freedom and the Bouc-Wen model of the MR damper behavior. To apply vibration control the inverse model of the damper is needed to determine the current controlling the MR damper. Thus, the Bouc-Wen model was approximated by the model based on tanh function with hysteresis included, which can be easy inverted. This approach resembles the real situation, where the model used for control does not correspond perfectly to the real device. The dissipative domain of this model can be modified by subtracting a nonlinear average velocity-force characteristics from the original one. After such modification, the real semi-active element can be treated as a fictitious active actuator which generates force limited by the nonlinear boundaries dependent on the relative piston velocity. Hereby, the FxLMS adaptive algorithm can be applied for vibration control in the semi-active suspension assuming preview about the road excitation is available as the reference signal. Simulation experiments indicated the high performance of the proposed approach and its advantage over the classical Skyhook algorithm in vibration control of the suspension. Adaptability of vibration control based on the FxLMS makes the presented algorithm scalable.
Aiming at the problem that the classification effect of support vector machine (SVM) is not satisfactory due to improper selection of penalty factor C and kernel parameter g, this paper proposes a new modified classif...
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When the backscattering method is adopted to test the concentration and the size of soot, it's very important to analyze the backscattering characteristics of soot to determine the optimal light source, detector a...
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The original Extremal Optimization (EO) algorithm and its modified versions have been successfully applied to a variety of NP-hard optimization problems. However, almost all existing EO-based algorithms have overlooke...
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The use of unmanned aerial vehicle (UAV) has been recognized by the majority of people, and is regarded as a reliable tool to complete some tasks. As for the obstacle avoidance of coaxial rotor UAV (CR-UAV), a flight ...
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