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In this paper, based on an ingenious Lyapunov function, an increased coupling control method is derived for overhead cranes, the performance of which is superior over most existing methods. Specifically, in terms of a composite signal, a Lyapunov function is constructed by solving partial differential equations. Then, a novel increased coupling control method is investigated straightforwardly, and...
According to design requirements, a dividing structure was applied in the mechanical design of three-axis turntable, which includes designed as inner frame, middle frame and outer frame. Angular contact ball bearings with P4 level were used in order to meet space requirement. In selecting motor, the factor of motor torque increase resulted from the three-axis coupling effect was considered and maximum...
In order to reduce the traffic accident on freeway, that is very necessary to control vehicle operating speed in freeway availably. the models have been established based on Multi-Rigd Body system Automatic Dynamic Analysis of Mechanical Systems (ADAMS) the models include Vehicle model, Road model, Vehicle and Road coupling model, Simulation module, vehicle safety status identify model, etc. and the...
In this paper we are studying the application of techniques to solve constraint satisfaction problems (CSP) for designing mechanical systems. After presenting the CSP method and the several ways to solve it, we introduce an optimization point of view for CSP. Then, we propose a quick overview of CSP application in product engineering. An example in mechanical system optimization is given via the case...
Recently, The researches of vehiclepsilas stability, controllability and comfortability are demanded because of increased usage of vehicle and mass transportation. The trend of vehicle is that the conventional vehicle accessories of mechanical link scheme are going to electronic module scheme connected by signal. The vehiclepsilas heavy mechanical steering linkages will be replaced to servo motors...
A mechanical system shows always unstable, non-Gaussian and nonlinear characteristics to some extent, especially when the system suffer from defect, therefore it is difficult for conventional vibration analysis based on Fourier transform to find weak fault information. High-order spectral analysis (HOSA) provides a more effective tool. In this paper bispectrum and 1(1\2)-dimension spectrum were used...
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