Configuration design is an essential, creative and decision-making step m parallel manipulator design process, in which modeling and assembly are iterative and trivial. Combined approach with automatic parametric mode...Configuration design is an essential, creative and decision-making step m parallel manipulator design process, in which modeling and assembly are iterative and trivial. Combined approach with automatic parametric modeling and automatic assembly is proposed for parallel manipulator configuration design. The design process and key techniques, such as configuration design, configuration verification, poses calculation of all parts in parallel manipulator, virtual assembly and etc., are discussed and demonstrated by an example. A software package is developed for parallel manipulator configuration design based on the proposed method with Visual C＋＋ and UG/OPEN on Unigraphics.展开更多
To improve the integration of Fano devices,we design a T-shaped waveguide coupling micro-ring resonator(MRR)structure to achieve a single cavity with Fano resonance in the whole spectral bands.The mathematical relatio...To improve the integration of Fano devices,we design a T-shaped waveguide coupling micro-ring resonator(MRR)structure to achieve a single cavity with Fano resonance in the whole spectral bands.The mathematical relationship between the phase factor,the coupling coefficient of the bus waveguide,and the Fano resonance slope extinction ratio(ER)is established.The electron beam exposure process is used to obtain a device with an insertion loss of~3 dB.The maximum ER of the Fano lineshape exceeds 15 dB,and the slope ratio(SR)is 251.3 dB/nm.This design improves the compactness of the Fano resonant device.展开更多
文摘Configuration design is an essential, creative and decision-making step m parallel manipulator design process, in which modeling and assembly are iterative and trivial. Combined approach with automatic parametric modeling and automatic assembly is proposed for parallel manipulator configuration design. The design process and key techniques, such as configuration design, configuration verification, poses calculation of all parts in parallel manipulator, virtual assembly and etc., are discussed and demonstrated by an example. A software package is developed for parallel manipulator configuration design based on the proposed method with Visual C＋＋ and UG/OPEN on Unigraphics.
基金supported by the State Grid Zhejiang Electric Power Corporation Information Telecommunication Branch(No.B311XT21004G)the 111 Project of China(No.D17021)+1 种基金the National Natural Science Foundation of China(No.61903042)the Beijing Natural Science Foundation(No.4214081)。
文摘To improve the integration of Fano devices,we design a T-shaped waveguide coupling micro-ring resonator(MRR)structure to achieve a single cavity with Fano resonance in the whole spectral bands.The mathematical relationship between the phase factor,the coupling coefficient of the bus waveguide,and the Fano resonance slope extinction ratio(ER)is established.The electron beam exposure process is used to obtain a device with an insertion loss of~3 dB.The maximum ER of the Fano lineshape exceeds 15 dB,and the slope ratio(SR)is 251.3 dB/nm.This design improves the compactness of the Fano resonant device.
