A brief overview of previously built Electro-Optical Tracking system reveals a trend toward smaller, more agile systems. Steel cable drive technology is an alternative to gearbox, belt and pulleys, chains and sprocket and other currently available transmission for several significant advantages, which includes backlash free, high stiffness, high efficiency, no lubrication etc.. As a new type of drive form, there were several key tradeoffs for the cable drive application, which will be developed and subjected in detail in this paper. Firstly Transmission principle and properties of cable drive is studied. Secondly, related design considerations of cable drive will be implemented and researched in detail, including the cable selection and capstan design, cable-groove matching strategy and cable tensioning design. Finally, actual application example of precise steel cable drive is presented for an Electro-Optical tracking gimbals, and performances tested validate the significant advantages of precise cable drive technology.
B-spline method plays an important role in data interpolating, fitting and smoothing.
Through analyzing the computed path of the de Boor-Cox algorithm, a new method for calculating
B-spline function is given based on the vector extending operation. The proposed method has a
parallel computing architecture and is suitable to realize by computers. Compared with the de
Boor-Cox algorithm, the proposed method can improve computing efficiency by (2k+1) times in the
task of calculating all nonzero values of k-degree B-spine functions. As an application in B-spline
curve fitting, it shows that the proposed algorithm can reduce the computing efforts obviously.
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