Discrete Train Speed Profile Optimization for Urban Rail Transit: A Data-Driven Model and Integrated Algorithms Based on Machine Learning

Table 2

Overview of measurement characteristics.

Parameter	Unit	Resolution
Speed	km/h	0.001
Position	m	0.001
Time	s	0.2
Train weight	ton	1
Current slope	1	1
EBI speed	km/h	0.001
Station spacing	m	0.001
Expected acceleration of PID	(km/h)/s	1
Electric energy consumption	Kwh	1