Patent Number: 6,310,456

Title: Control system and method

Abstract: A control system for determining a control function for a control device on the basis of a transfer function of an object to be controlled and for adjusting an operation quantity of an object to be controlled in accordance with the determined control operation function, wherein an control function of a first control device is determined so that a closed-loop transfer function of a control system including the object to be controlled and the first control device coincides with a predetermined first transfer function, an control function of a second control device is determined, in a closed loop control system including the control system and the first control device, so that a transfer function from a disturbance applied to the object to be controlled to a state variable of a point at which the disturbance is applied to the object to be controlled, and a sum signal indicative of a sum of outputs of the first and second control devices is used as an operation quantity of the object to be controlled.

Inventors: Morooka; Yasuo (Hitachi, JP), Inaba; Hiromi (Hitachi, JP), Nakahara; Takashi (Hitachi, JP), Okada; Takashi (Hitachi, JP), Tobise; Masahiro (Hitachi, JP), Iwaji; Yoshitaka (Hitachi, JP)

Assignee: Hitachi, Ltd.

International Classification: G05B 19/19 (20060101); G05B 13/04 (20060101); G05B 019/408 ()

Expiration Date: 10/30/2018