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The design of a novel adaptive finite-time stable control system for high-order systems with parameter uncertainties is presented. Specified dynamics with recursive structure is employed as the finite-time convergent target system, thus leading to a systematic design process for systems with arbitrary order. Estimators for unknown parameters are constructed using immersion and invariance (I&I)...
Vulnerable code reuse in open source software is a serious threat to software security. However, the existing high-efficiency methods for vulnerable code clone detection have a large number of false-negatives when the code is modified, which results in limited application scenarios. In this paper, we present an innovative fingerprint model to describe the vulnerability code and propose VFDETECT, an...
Recent developments of variable frequency applications have accelerated the demand to look at the measurement technology on variable frequency signals. Most low voltage (LV) circuit breakers are designed to operate at a fixed frequency. Therefore, it is necessary to propose a variable-frequency measuring concept for LV protection devices. In this paper, we propose a novel combined alternate current...
The design of a novel composite adaptive control system for a class of uncertain systems using immersion and invariance (I&I) theory is presented. The interest here is to achieve a composite I&I adaptive control in the presence of model parametric uncertainties. Two sources of parameter information are combined for the parameter adaptation, which consists of tracking-error based adaptation...
A novel immersion and invariance (I&I) adaptive control with σ-modification is proposed for flexible air-breathing hypersonic vehicles in the paper. Based on the framework of backstepping, the controller is a combination of I&I adaptive control and σ-modification. The control system can not only deal with the significant aerodynamic parameter uncertainties in AHVs model, but also guarantee...
The pantograph-catenary interaction is an important index of railway safety, which is always evaluated and analyzed by the position of the contact points. The tracking and locating of the contact points in online monitoring has always been an urgent problem due to the high speed of the train operation and various complex backgrounds. In this paper, we proposed an practical online tracking method for...
This paper considers the boundary stabilization of stochastic delay reaction-diffusion systems(SDRDSs). We present the integral-form Lyapunov stability lemma for SDRDSs which provides the foundation of stability analysis for stochastic reaction-diffusion systems. Then, we design a boundary controller and obtain a criterion to guarantee the globally stochastically asymptotical stability of SDRDSs with...
This paper is devoted to robust H∞ sliding mode control (SMC) for a class of uncertain switched singular systems with time-delay (SST). Based on the average dwell time approach, sufficient conditions for the existence of designed linear sliding surface and the admissibility of the underlying sliding mode dynamics (SMDs) with given disturbance attenuation level are presented in terms of LMI, by which...
In this paper, a novel control scheme for the flexible air-breathing hypersonic vehicle (FAHV) using adaptive interval type-2 fuzzy logic system (AIT2-FLS) is proposed to reduce the side effects of measurement noises in the velocity channel and altitude channel as well as flexible dynamics in real applications. After input-output linearization of the longitudinal model of FAHV, the dynamic inversion...
To explore whether the conscious options or eye movements of human beings are influenced by bottom-up saliency, both theoretical and experimental analysis are presented in this paper. In the first experiment, the subjects are required to indicate most interesting regions of test pictures in the scene. In the second experiment, the subjects are required to look around test pictures in the scene. Then,...
Motion planning as trajectory optimization requires generating trajectories that minimize a desired objective function or performance metric. Finding a globally optimal solution is often intractable in practice: despite the existence of fast motion planning algorithms, most are prone to local minima, which may require re-solving the problem multiple times with different initializations. In this work...
Class imbalance problem has attracted a great attention in the field of ELM (extreme learning machine). Cost sensitive ELM was proposed to address class imbalance but it merely handled binary class imbalance and required to predefine misclassification costs subjectively. Boosting WELM has been presented to handle multi class imbalance, and performed well on improving the classification accuracy of...
In this paper, an adaptive interval type-2 fuzzy output feedback control (AIT2-FOFC) scheme is developed for flexible air-breathing hypersonic vehicles (FAHVs) in the presence of unknown flexible dynamics and parameter uncertainties. After calculating the derivatives of the velocity and altitude repeatedly, a state feedback dynamic inversion controller is formulated as the basic nominal controller...
Due to ignoring the micro-motion characteristics in deception jammer against Pulse Doppler (PD) radar, the generated false targets are much easier recognized from the real targets. In order to improve the fidelity of false targets' motion characteristics, a deception jamming approach is presented to generate false targets with both translation and micro-motion information. Based on the false target...
A novel active suspension of Mars rover based on six-wheeled rocker-bogie suspension is proposed and the design is given from the 2D modularization concept. The proposed suspension not only can operate as same as normal six-wheeled rocker-bogie suspension, but also provides active fold-unfold ability on the platform, great wheel-legged passing ability in soft terrain and steep slopes. The most important...
A novel nonlinear multi-input/multi-output adaptive continuous finite-time control system for air-breathing hypersonic vehicles with parametric uncertainty is proposed in this paper. The control system is based on the frame of backstepping design and time-scale separation principle to decouple the high-order vehicle model into two first-order and one second-order subsystems. For the first-order subsystems,...
labeled mobile network traffic traces are the foundation of mobile traffic research. However, traditional label method may be not suitable for mobile traffic. This paper devised a mobilegt to address this problem. It is composed by mobilegt client and mobilegt server. Mobilegt client includes a socket logger and a traffic manager. Mobilegt server includes a VPN server, a traffic logger and a traffic...
To perform segmentation to identify regions of constant copy number is an important key for discovering structural variation in the human genome. It calls for a uniform pipeline to integrate various segmentation methods in a flexible software toolbox for conveniently evaluating outcome. We propose such toolbox and implement an open source Java package called ToolSEG to generate realistic DNA copy...
As convolutional neural network (CNN) has been used more and more widely, such as in areas of images classifications and face recognition, the traditional CPU or GPU platforms have been insufficient to support the efficient operation of increasingly complex CNN. Therefore, heterogeneous computing platform is increasingly used to accelerate CNN, which contains a host and one or more computing devices,...
In the field of multi-view video coding, multi-view plus depth video is an important data format, but it always suffers from quantization errors, which result in obvious artifacts in consequent virtual view rendering. In this paper, we propose a cluster-based cross-view filtering (CBF) scheme for the enhancement of compressed depth maps. In this scheme, reconstructed depth information are mapped from...
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