公开(公告)号：US20200333775A1

公开(公告)日：2020-10-22

申请号：US16845522

申请日：2020-04-10

Applicant: Hitachi, Ltd.

Inventor： Morio MATSUMOTO ,  Fumiya KUDO ,  Toshihiro KUJIRAI

IPC: G05B19/418 ,  G05B17/02 ,  G05B19/4069

Abstract: An object of the present invention is to reduce an error between an actual machine and a simulation by removing the influence of overlearning of an adjustment by a mathematically-described function, and to optimize automatic operation control of the machine. An automatic operation control system for controlling an automatic operation of a machine sets a first model showing a relation between a control signal string input to the machine on the basis of a mathematically-described function and data output from the machine controlled in accordance with the control signal string. In a learning process including learning the automatic operation control of the machine, the system executes learning using the first model until a first condition is satisfied. After the first condition is satisfied, the learning is executed using a second model that is a model after the first model is changed one or more times until a second condition meaning overlearning is satisfied or the learning is finished without satisfying the second condition.

公开(公告)号：US20240289719A1

公开(公告)日：2024-08-29

申请号：US18569664

申请日：2022-03-24

Applicant: Hitachi, Ltd.

Inventor： Hiroya MATSUBA ,  Morio MATSUMOTO ,  Toshihiro KUJIRAI

IPC: G06Q10/0635 ,  G06Q10/20

CPC classification number: G06Q10/0635 ,  G06Q10/20

Abstract: The risk management system includes countermeasure information indicating a relationship between each of a plurality of risk types and a countermeasure against each risk type, and a plurality of risk models that define a process of estimating a risk value at each point of time in future and determining a countermeasure, the plurality of risk models corresponding respectively to the plurality of risk types, selects a risk model corresponding to a risk type of each of the constituent elements, gives result information to the selected risk model to estimate a future risk value of each of the constituent elements, and, according to the risk model, extracts a countermeasure corresponding to the risk type, based on the countermeasure information. The risk management system includes also risk structure information defining a countermeasure for the management target and a threshold for applying the countermeasure.