Aiming at the problems of high-labor intensity and difficult operation of freight locomotive. a scenario-specific objective curve planning method was proposed. and the proportional-integral-differential (PID) control algorithm of expert system was designed to follow and optimize iteratively the objective curve in real time. The automatic train operation (ATO) function of freight locom... https://ashleyshomestores.shop/product-category/8-piece-twin-bookcase-bed-bedroom-package/