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This article presents a developmental method to identify the maximum pose error for Stewart platform. The pose error is mainly caused by installation errors, joint clearance errors and the actuation errors. The relationship between pose error and installation errors, as well as branch length errors, are derived from inverse kinematic equations. Utilizing D-H (Denavit-Hartenberg) matrix differential...
This paper deals with the robust control problem for linear systems with both gain and time constants variations under fractional order PIλDμ controller. A robustness specification to the parameters variations is proposed. For those systems with more than one uncertain time constant, the robustness specifications are analyzed and simplified. To minimize the phase offset nearby the crossover frequency,...
The use of simulation to study complex systems having both productivity and sustainability related performance measures seems to be growing at a rapid pace. This paper describes the recent developments and discusses potential future capabilities of a sustainability toolkit for simulation. The intent of the toolkit is to make sustainability related performance measures as easy to model and collect...
As sustainability related issues are becoming increasingly import in business decision making, simulation modeling is needed to analyze the system performance not only using traditional performance measures such as productivity and efficiency, but also taking into account sustainability related performance measures. This paper describes the design and development of a sustainability toolkit for simulation...
While a sound spoken is described by a handful of frame-level spectral vectors, not all frames have equal contribution for either human perception or machine classification. In this paper, we introduce a novel framework to automatically emphasize important speech frames relevant to phonetic information. We jointly learn the importance of speech frames by a distance metric across the phone classes,...
Electronic package devices often endure a substantial number of thermal loading during working. Due to the mismatch of the materials' CTE, the thermal stress can accumulate in the device's interior, which would cause device failure such as die crack, warpage and so on. Especially for the popular multi-chip stacked package, single-chip requires thinner, the tensile strength of chip becomes very small...
The term structure models of interest rate have been extensively applied to asset pricing, design of financial instruments, hedging, arbitraging and investment decision. Therefore, the estimation of parameters in the term structure model has been a key problem. In this paper, the parameters of term structure model is estimated by using two different kernel functions: Gauss kernel function and Epanechnikov...
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