A method for operating a controller apparatus for controlling a drive apparatus having a load moment and a moment of inertia, includes determining an estimated load value of the load moment by a load moment estimator during a constant-running phase, when a drive speed of the drive apparatus is kept to a constant setpoint value by the controller apparatus, using a model to describe an association between the moment of inertia and the load moment and generating an estimated inertia value of the moment of inertia as a pilot control of the moment of inertia based on the model during the constant-running phase. Further disclosed are a controller apparatus and a drive apparatus designed to carry out the method.

A technique capable of shortening a period in which value of a PID parameter is outside of an appropriate range is provided. A measured value acquisition functional unit processes a sensing signal of a sensor that measures a barrel and acquires a measured value of the barrel. A storage unit stores a target value of the barrel and a PID parameter. An operation amount calculation functional unit calculates an amount of operation using the PID parameter and a difference between the measured value and the target value. A first output unit and a second output unit output the amount of operation. A first updating functional unit updates the PID parameter through a first update process when the variation range is greater than a first range, and a second updating functional unit updates the PID parameter through a second update process when the variation range is less than a second range.

A data processing device according to one aspect of the present invention includes a first definer configured to define a transfer function of a process which is a control target on the basis of an output value from the process and a manipulated variable of the process, an analyzer configured to analyze frequency characteristics of the output value from the process, a second definer configured to define a target sensitivity function on the basis of a sensitivity function, a first frequency band included in the frequency characteristics, and a predetermined attenuation factor, the sensitivity function being defined based on the transfer function of the process and at least one control parameter of a controller for controlling the process, and an adjuster configured to adjust the at least one control parameter to decrease a difference between the sensitivity function and the target sensitivity function.

A method for operating a controller apparatus for controlling a drive apparatus having a load moment and a moment of inertia, includes determining an estimated load value of the load moment by a load moment estimator during a constant-running phase, when a drive speed of the drive apparatus is kept to a constant setpoint value by the controller apparatus, using a model to describe an association between the moment of inertia and the load moment and generating an estimated inertia value of the moment of inertia as a pilot control of the moment of inertia based on the model during the constant-running phase. Further disclosed are a controller apparatus and a drive apparatus designed to carry out the method.

Exemplary embodiments provide substation automation systems for operating a high or medium voltage substation for an electric power transmission or distribution network. The substation automation system includes a multitude of secondary devices, which transmit and receive data from/to each other via multicast packets. The secondary devices include packet filters, which are adapted to be set up dynamically during the runtime of the substation automation system, in order to update the rules for forwarding multicast packets received from the station bus system to the application running on the secondary devices.

An air conditioning parameter generation apparatus as one aspect of the present invention includes a processor configured to execute a program to provide at least a heat flow detector and a parameter value determiner. The heat flow detector detects a heat flow flowing into or flowing out from a first region where an air conditioner adjusts air conditioning. The parameter value determiner determines a value of a parameter for calculating a magnitude of a heat flow rate of the heat flow on the basis of change in measurement temperature of the first region.

The present invention relates to a servo motor controller for controlling a servo motor having a current limiting unit, and a tuningless nonlinear control method thereof. According to the present invention, the servo motor controller control method for controlling a servo motor including a current limiting unit comprises the steps of: detecting that the limited current is output according to a current command of the current limiting unit; adjusting a disturbance estimation gain of the servo motor controller in response to the output of the limited current; and generating a control input provided from the servo motor controller to the current limiting unit on the basis of the adjusted disturbance estimation gain.

Automating Information Handling System (IHS) hardening optimization includes retrieving, from a plurality of IHS hardening configurations, an initial IHS hardening configuration and hardening an IHS based on the initial hardening configuration. An IHS hardening verification tool is then run to verify that the IHS is in compliance with a compliance checklist, if it is, end-to-end tests are run on the IHS, and upon passing the end-to-end tests the initial hardening option is determined to be the best hardening option for the IHS. However, in response to the IHS not passing the end-to-end tests, a next IHS hardening configuration is retrieved and the IHS is hardened based on the next hardening configuration. Running the hardening verification tool and end-to-end tests on the IHS and retrieving a further IHS hardening configuration and hardening the IHS based on the further hardening configuration is repeated, until the IHS passes the end-to-end tests.