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J. Cent. South Univ. (2020) 27: 3334-3349 DOI: https://doi.org/10.1007/s11771-020-4550-4 A novel method to predict static transmission error for spur gear pair based on accuracy grade LIU Chang(刘昶... to predict the spur gear pair’s static transmission error based on the accuracy grade, in which manufacturing errors (MEs), assembly errors (AEs), tooth deflections (TDs) and profile modifications (PMs......
(△t≤Tmin/20) is employed, the precise integration method is endowed with the highest accuracy while the CEMDTS possesses the smallest computation effort. However, the CEMDTS becomes the most accurate...; conservative system; explicit algorithm; accuracy 1 Introduction Most of the problems in engineering are nonlinear in essence. The superposition principle is invalid in the process of analyzing the dynamic......
J. Cent. South Univ. (2012) 19: 933-943 DOI: 10.1007/s11771-012-1095-1 Enhancing pose accuracy of space robot by improved differential evolution LIU Yu(刘宇)1, NI Feng-lei(倪风雷)1, LIU Hong(刘宏)1, XU Wen... not to match the desired one, and further hinder the space robot from performing the scheduled mission. To improve pose accuracy of space robot, a new self-calibration method using the distance......
. At last, the experiment was made. The results show that vision measuring accuracy reaches 0.01 mm, and positioning accuracy reaches 0.05 mm, which satisfies the NC machining requirements. This technology guarantees machining accuracy, and greatly improves the computational efficiency. Key words: three-jaw chuck; subpixel; edge detection; recognition accuracy 智能视觉上下料机器人能够服务于2台以上数控机床,依靠视觉系统完成数控机床的上,下料操作......
accuracy calibration technology for measurement devices WANG Xian1, TAN Jianping1, CHEN Guoqiang1, CHENG Xiaole2 (1. School of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China; 2. China National Heavy Machinery Research Institute Co. Ltd., Xi’an 710032, China) Abstract: The method for the accuracy calibration and maintenance of vision measuring device......
the thermal deformation of tool is to control the tool wear and the cutting speed. Key words: ultra-precision cutting; tool wear; diamond; thermal deformation; form accuracy 1 Introduction Large... by the machined surface geometric errors which include the form accuracy, waviness and surface roughness [3-4]. The form accuracy of large aluminum alloy mirrors is required to reach 0.03-0.3λ (λ=630 nm......
accuracy. A parallel-composed morphological filter with multiple structure elements was designed to process measured displacement time series with adaptive multi-scale decoupling. Whereafter, functional... are as low as 1.670% and 0.172 mm, respectively, which means that the prediction accuracy are improved significantly.Key words:slope displacement prediction; parallel-composed morphological filter......