Omron Corporation

Taro Iwami

Yumi Tsutsumi

Junichi Wada

A simulation method run on a computer simulating the characteristics of a real controlled device including a heating apparatus that changes a heating value in accordance with a first manipulated value, includes creating a controlled-device model representing the real controlled device where a first manipulated value is an input and a process value for the real controlled device is an output, acquiring a first time-related characteristic as input to the controlled-device model, and calculating a second time-related characteristic from the output from the controlled device model with respect to the input of the first time-related characteristic. The controlled-device model includes a heating component corresponding to the heating apparatus for increasing the process value in accordance with the size of a first manipulated value.

Simulation method, recording medium wherein simulation program is stored, simulation device, and system

A controller having an auto-tuning function has a manipulated value determination unit that selectively determines a first manipulated value for causing a first change in a controlled value of a controlled object or a second manipulated value for causing a second change opposite to the first change in the controlled value, in accordance with a preset parameter, so that a process value obtained from the controlled object follows a target value, and a tuning unit that alternately outputs the first manipulated value and the second manipulated value in accordance with the process value, and that determines the parameter from a response characteristic obtained through the alternate output. The tuning unit successively changes a magnitude of the first manipulated value each time output is switched during the alternate output of the first manipulated value and the second manipulated value.

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Kyoto, Japan

Taro Iwami