Title:
CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/183853
Kind Code:
A1
Abstract:
A control device comprises: a computing unit that computes a desired output value of a control target; a gain value adjusting unit that computes a gain value of a PID controller so that a difference between the desired output value and an output value of the control target decreases; and a parameter changing unit that changes a parameter value of the computing unit when at least one of the following holds true: at least one of a measured value of output of the control target and an overshoot amount and an undershoot amount of an estimated value is not within a prescribed range; a gain value newly computed by the gain value adjusting unit is not within a prescribed range; a gain value newly computed by the gain value adjusting unit has reached a prescribed value; an input value to the control target is not within a prescribed range; and an input value to the control target has reached a prescribed value.
Inventors:
NAKAGAWA SHINJI (JP)
Application Number:
PCT/JP2019/050001
Publication Date:
September 17, 2020
Filing Date:
December 20, 2019
Export Citation:
Assignee:
HITACHI LTD (JP)
International Classes:
G05B13/04; G05B13/02
Foreign References:
| JP2015076024A | 2015-04-20 | |||
| JP2018180665A | 2018-11-15 | |||
| JPH10138186A | 1998-05-26 |
Attorney, Agent or Firm:
TOU-OU PATENT FIRM (JP)
Download PDF: