Shanghai Tunnel Engineering Rail Transit Design & Research Institute

A Method for Relatively Accurate Quantitative Calculation of the Motion Decoupling Performance of Parallel Mechanisms

Abstract Excellent motion decoupling performance (MDP) of parallel mechanisms (PMs) will give them significant advantages in kinematics/dynamics modeling, real-time control, and other aspects. However, current methods for evaluating the MDP of PMs remain at a qualitative level. T...

Carbon mitigation potential of metro-based underground urban logistics under operational constraints

Rising urban freight and decarbonization pressures raise an increasingly pressing question: can metros provide green freight mobility without harming passengers? We develop a policy-evaluation framework for metro-based underground logistics (MUL) that integrates multi-task demand...

Reproducing urban wind field during the typhoon period via multi-source data assimilation in WRF-3DVAR

This study employs a Weather Research and Forecasting model with 3-dimensional variational data assimilation (WRF-3DVAR) to integrate multi-source meteorological data from satellites, Light Detection and Ranging (LiDAR), and surface weather stations, introducing multi-scale obser...