A method for estimating an instantaneous powder discharge amount of a bulk trailer automatic discharge system, installed in an automatic powder discharge system of a bulk trailer configured such that a plurality of hoppers are formed at the lower end of a storage tank for storing powder, discharge valves are installed at the discharge ports of the respective hoppers and high-pressure air is supplied from one end of a discharge pipe crossing the discharge ports of the hoppers to discharge the powder, the method being suitable for estimating an instantaneous powder discharge amount using state parameters related with a powder discharge operation of the bulk trailer, the method comprising:
- (a) obtaining a plurality of state parameters and a powder discharge amount related with the powder discharge operation of the bulk trailer for each case;
- (b) building a database by relating the powder discharge amount with the state parameters;
- (c) building, using the database, a machine learning model for predicting an instantaneous powder discharge amount depending on pressure values of respective components of the bulk trailer among the state parameters;
- (d) measuring at least one state parameter among the state parameters during the powder discharge operation of the bulk trailer, and receiving the at least one state parameter as an input parameter;
- and
- (e) estimating an instantaneous powder discharge amount by applying the input parameter to the machine learning model.