In this paper, the problem of robust H∞ fuzzy observer-based tracking control for the uncertain T-S fuzzy systems with external disturbances is addressed. The robust stability synthesis is based on the descriptor red...
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The objective of this paper is to combine the composite nonlinear feedback and integral sliding mode strategies for fast and accurate robust tracking of a class of linear systems subject to uncertainties. In fact, the...
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Using optimization tools such as genetic algorithms to construct a fuzzy expert system (FES) focusing only on its accuracy without considering comprehensibility may result in a system that is not easy to understand or...
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Using optimization tools such as genetic algorithms to construct a fuzzy expert system (FES) focusing only on its accuracy without considering comprehensibility may result in a system that is not easy to understand or so called a black box model. To exploit the transparency features of FESs for explanation in higher-level knowledge representation, a FES should provide high comprehensibility while preserving its accuracy. The completeness of fuzzy sets and rule structures should also be considered to guarantee that every data point has a response output. This paper proposes some quantitative measures to determine the degree of the accuracy, the comprehensibility, and the completeness of FESs. These quantitative measures are then used as a fitness function for a genetic algorithm in optimally building a FES.
This paper addresses the problem of H∞ fuzzy observer-based non-PDC controller design for uncertain T-S fuzzy systems with external disturbances. The synthesis of the observer-based controller is based on a fuzzy Lya...
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This paper presents a collision mitigation system for an unavoidable collision with an arbitrary oncoming obstacle vehicle. A set of candidate trajectories are generated by a modelbased method and a hierarchical effic...
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A two-step method is proposed in this paper to provide scientific basis for investment *** basis of this method is to construct feature pattern vectors as the input vectors of improved support vector machines(SVM) to ...
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ISBN:
(纸本)9781467383196
A two-step method is proposed in this paper to provide scientific basis for investment *** basis of this method is to construct feature pattern vectors as the input vectors of improved support vector machines(SVM) to map into class *** first step is aimed at selecting stocks worth being invested,and the second step focuses on forecasting potential trend of the selected ones in the near *** notably,the evolving design of category lab.ls ensures more detailed simulation of the *** two-step method is developed to produce appropriate models,improve the efficiency of decreasing capital risk,and meanwhile improving the investment yields for the business enterprises and *** simulations of Chinese A-share stock markets,experimental results obtained verify the two-step method is a promising and effective approach for investment decision-making,and the accuracy rate of forecasting reaches high levels.
A novel recursive singularity free FTSM (Fast Terminal Sliding Mode) strategy for finite time tracking control of nonholonomic systems is proposed. As a result, the singularity problem around the origin resulting from...
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There exists an increasing need for precision measurement&pointing control and extreme motion stability for current and future space systems,e.g.,Ultra-Performance Spacecraft(UPS).Some notable technologies of real...
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There exists an increasing need for precision measurement&pointing control and extreme motion stability for current and future space systems,e.g.,Ultra-Performance Spacecraft(UPS).Some notable technologies of realizing Ultra-Pointing(UP)ability have been developed particularly for Ultra-accuracy Ultra-stability Ultra-agility(3 U)spacecraft over recent ***,Multilevel Compound Pointing control Techniques(MCPCTs)are deployed in aerospace engineering,especially in astronomical observation satellites and Earth observation *** controllers and/or algorithms,which are a key factor of MCPCTs for 3 U spacecraft,especially the jitter phenomena that commonly exist in a UPS Pointing control System(PCS),have also been effectively used in some UP spacecraft for a number of ***-vibration suppression approaches,however,are often proposed to deal with low-level mechanical vibration or disturbance in the microgravity environment that is common for *** latter approach potentially is one of the most practical UP techniques for 3 U *** emerging advanced Disturbance-Free Payload(DFP)satellites that exploit the benefits of non-contact actuators have also been reported in the *** represents an interesting and highly promising approach for solving some challenging problems in the *** paper serves as a state-of-the-art review of UP technologies and/or methods which have been developed,mainly over the last decade,specifically for or potentially could be used for 3 U spacecraft pointing *** problems discussed in this paper are of reference significance to UPS and millisecond optical sensors,which are involved in Gaofeng Project,deep space exploration,manned space flight,and gravitational wave detection.
This article presents the hybrid design and control of a quad-rotor system called Flymobile. Flymobile is a combined system of a mobile robot and a quad-rotor system aimed to perform both flying and driving tasks. Fly...
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Effects of camera calibration errors are investigated in static-eye configuration. The effect of the error in the extrinsic parameters of the camera to extract and predict the position of a flying object in a 3D envir...
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