Motion parameter correction calculation method and system for motion trend change

The invention provides a motion parameter correction calculation method and system for motion trend change, and the method comprises the steps: obtaining a first unit resultant force corresponding to a corresponding starting position and a second unit resultant force corresponding to an ending position of a train according to a specified calculation step length; when the product of the first unit resultant force and the second unit resultant force is smaller than 0, it is determined that the train operation trend changes, and the inflection point where the resultant force is 0 is determined; splitting the calculation step length into two sections according to the inflection point for correction calculation; and correcting the motion parameters of the termination position according to the first unit resultant force and the second unit resultant force. According to the method, the change of the train running trend in the calculation step length is considered, the motion parameters are corrected according to the