| Citation: | LIN Miao, MENG Gang, JU Yongjian, et al. Design and optimization of large-stroke decoupled three-translational micro-positioning platform[J]. Journal of Beijing University of Aeronautics and Astronautics, 2022, 48(7): 1252-1262. doi: 10.13700/j.bh.1001-5965.2021.0007(in Chinese)
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To design large-stroke three-translational micro-positioning platforms with excellent decoupling characteristics, a new 2T3R type motion pair was proposed. The structure of three-translational micro-positioning platform was designed based on the 2T3R type motion pair. The theoretical models of force-displacement relationship and lost motion were established by nonlinear model method, the theoretical models of platform natural frequency were established by Lagrange equation. The goal programming method was used to optimize parameters of the micro-positioning platform. The correctness of the above theoretical model was verified by finite element simulation. According to the theoretical calculation and simulation results, the first-order natural frequency of the platform is 51.27 Hz. the lost motions in
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