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This paper investigates a novel control strategy for the position and attitude tracking control problem of a quadrotor UAV based on terminal sliding mode control. To realize the control objective, the model of the quadrotor UAV with six degrees of freedom which is actually a class of underactuated systems, is reasonably divided into a fully actuated subsystem with two degrees of freedom and an underactuated...
Numerical modeling of soil-pile interaction under vertical loading was performed by Particle Flow Code in two dimensions. The numerical simulations show that the change of the soil particle and porosity in which the composite foundation with rammed expanded piles under the different vertical loading, and interpret the pile-soil mechanism that is quantitative analysis. The phenomena and corresponding...
Numerical methods using the Hartley transform are described for the simulation of 3-D wave phenomena with application to the modeling of seismic data. Four topics are covered. The first deals with the solution of the 3-D acoustic wave equation. The second handles the solution of the 3-D two way nonreflecting wave equation. The third involves modeling with an areal source. The fourth treats wave phenomena...
CDIO model is the latest achievement in the international engineering education reform, it is centralized summarization and abstract expression of learning by doing and Project based education and learning. AHP and Fuzzy judgement was used the evaluation system of CDIO model teachers' classroom teaching quality. By analyzing constituent elements of teaching quality, teaching attitude, teaching method,...
The fly ash is rich with the actual situation in Handan, high-performance concrete was prepared by means of orthogonal design, according to test data, analyze water-cement ratio, the amount of fly ash, FDN content how to influence the 28th-day compressive strength and workability by means of range and variance. The aim is to explore the possibility that mix and use HPC as structure concrete in local...
In order to ensure safety in coal production, full assurance is given for fully-mechanized excavated faces. Based on the vector supporting machine for regression (SVR), a model is established for predicting the gas emission in fully-mechanized excavated faces. The index system is analyzed and the model parameters are chosen. Then, the sample set of gas emission in fully-mechanized coal driving workface...
This paper describes a rapid pesticide residues detection method for vegetable samples or water samples based on a mini-colorimeter. The sensors responding signal and condition circuit of the mini-colorimeter are composed of emitting diodes, photodiode receivers and integrated circuit amplifiers. Single chip microprocessor is the core of the system. The concentration (PPM) of pesticides is displayed...
Intellectual capital in the context of knowledge-based economy is important means of the enterprises survival and development. According to analyze constituent elements of intellectual capital, the index system was proposed by human capital, management capital, technology capital and market capital, index weights were determined by using AHP, the comprehensive evaluation model was established by using...
In order to comprehensively evaluate the undergraduate teaching job quality of colleges and universities, the evaluation simulation model was set up using artificial fish-swarm-neural network; taking the teaching management, major construction and curriculum reform, teaching research and the results, the teaching quality for the input layer, the undergraduate theory teaching job quality of colleges...
The evaluation of real estate investment environment is a systematic project involving multi-factor. Accordingly, select the most impact on the real estate investment environment to evaluate factors as indicators, establish unascertained measure comprehensive evaluation model. Applications used by the model shows that the evaluation result can objectively reflect the real estate investment environment,...
Innovation education and cultivating innovative talents is not only the tactic demand of the higher education in the new period but also the important duty of our society. It's a complicated course of the cultivation of innovative talents. It needs various aspects' corresponding development and osculation cooperation. According to analyse the intension of the quality education, the factors, the aims...
In this paper, a novel fault prediction method is proposed for complicated equipments, which extracts features by energy comparing method and realizes pattern recognition by multi-class support vector machines (SVM). Firstly, signal features are extracted by energy comparing method, which combines multi-resolution analysis of wavelet packets and energy spectrum. Through three scales wavelet packet...
This paper presents the principles and experiment results of a new carbon potential control system based on the gas sensors array. The carbonizing process is controlled with the sensors outside of the heat treatment furnaces. The phase transformation dynamic model was employed to the feature extraction of the responding signals of gas sensors. The mathematical model built with the feature vectors...
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