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 Wysłany: Sob 20:38, 04 Gru 2010 Temat postu: tory burch sale A free three parallel drive platfo |
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A free three parallel drive platform mechanism and analysis of spatial location Solution
Such a conclusion, regardless of platform space for any attitude motion, = 0, Y = 0. Namely: in any case,[link widoczny dla zalogowanych], the platform does not have along the axis, Y axis translation of 76 * Harbin Engineering University Vol 23 plus exercise. (2) when the platform is only for translational motion along the z axis, the platform does not produce any additional movement. (3) when the platform is only room for one degree of freedom pose rotation, namely: 0 = 0 or = 0, from (9) and type (1o) can be deduced y = 0, = 0,[link widoczny dla zalogowanych], Yp = 0. It can be seen: In this condition, the platform does not have any additional campaign. (4) When the platform for the DOF space posture rotated: 0 ≠ 0 and ≠ 0, it sometimes (1o) can be seen at this time will result in an additional rotation around the z-axis movement. Additional value generated by rotation of its size and y values of 0 and is related to 0 and larger, y greater the contrast and the smaller 0,[link widoczny dla zalogowanych], y is smaller. 3 Conclusion The foregoing analysis, this article has three degrees of freedom parallel actuated platform independent movement of 3 parameters, namely: translation along the axis z, the rotation around the axis 0, the rotation around the Y axis; only for around the same time axis, Y axis movement, resulting in an additional rotation around the z-axis movement in the other conditions do not produce any additional movement. And in the actual calculation, resulting in an additional rotation), the value and 0, the value compared to the value of relatively small, and at 0, there is a value not too large, the resulting y very small. And other structures of the three-DOF parallel platform citrus ratio, the structure of this article can reduce the two additional movements, which can improve the accuracy of the actual simulation. The algorithm for this article is concerned, its simple, practical, can improve the speed and solving real-time control of computer speed of response. In the three degrees of freedom parallel drive motion control platform for institutions that have direct application. References: [1] Qiao Junwei, Yong-Qi Zhan. Six degrees of freedom parallel platform structure optimization [J]. Machine Design, 2000, (3) :44-46. [2] Wang Xuyong, the king was positive, Zhang Ying,[link widoczny dla zalogowanych], et al. Three-DOF parallel platform mechanism driving the location and analysis of inverse solution [J]. Shanghai Jiaotong University, 1998,32 (1) :102-104. [3] Yangwen Mao, Li Quanying. Analytic Geometry [M]. Wuhan: Wuhan University Press, 1997. [4] Huang, Ling Fu, Fang Yue law. Parallel mechanism and control theory [M]. Beijing: Mechanical Industry Press, 1997. [5] SIMA'ANN, GLOZMAND, SHOHAMM. Designconsiderationsofnewsixdegrees - of - freecdomparallelrobots [A]. IntemationalConferenceonRobotics & Au-tomation [C], 1998. [Editor: Liu Yuming] (Continued from page 47) is proposed to achieve high temperatures and humidity imports plateau region and other poor working conditions, boost engine power to recover a new direction to achieve this goal is given to the theoretical basis and compressor after spraying process simulation, the water raised,[link widoczny dla zalogowanych], reducing the compressor outlet temperature, reduce the compression work, etc. verify the theoretical and experimental study carried out initially. Therefore, to point out that the resumption of imports of pressurized humidification in harsh working conditions, engine power and improve the reliability of the engine work, are an effective method. References: [1] Sun Yu Feng, and Zhou Jie. Between the water level of wet compression technology [J]. Harbin Engineering University, 1999,20 (4) :20-23 [2] Li Shuying. Compressor wet compression gas turbine between the principle of water [D]. Harbin: Harbin Engineering University. 1999 [3] and Zhou Jie. Uniaxial compression of the wet gas turbine [D]. Harbin: Harbin Engineering University, 2000 [4] Shen Victoria Road. Engineering Thermodynamics [M]. Beijing: Higher Education Press, 1985 [5], Harbin Engineering University of wet compression research group. Harbin Engineering University, 6135 imports of wetting experiment results 3JR]. Harbin: Harbin Engineering University, 2001. [6] Task Force Harbin Engineering University of wet compression. Harbin Engineering University, Jiangjin turbocharger plant wet compression joint experimental results [R]. Harbin: Harbin Engineering University, 2001. [7] Yanjia Lu, Yang Yu Shun, Liu Ming. Hydrocarbon fuels, gas and heating properties of the table [M]. Beijing: Science Press, 1989. [8] Ma with Ling. Turbocharged diesel engine technology imports humidification [D]. Harbin: Harbin Engineering University, 2002. [Editor: Liu Yuming]
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