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1. (WO2016056305) CONTROL DEVICE AND CONTROL METHOD

Pub. No.:    WO/2016/056305    International Application No.:    PCT/JP2015/073055
Publication Date: Fri Apr 15 01:59:59 CEST 2016 International Filing Date: Tue Aug 18 01:59:59 CEST 2015
IPC: G05B 13/02
Applicants: MITSUBISHI ELECTRIC CORPORATION
三菱電機株式会社
Inventors: KIMURA, Masaya
木村 将哉
IKEDA, Hidetoshi
池田 英俊
KOMETANI, Fumio
米谷 史雄
Title: CONTROL DEVICE AND CONTROL METHOD
Abstract:
The present invention, is provided with: a control computation unit (101) that generates an operation amount on the basis of a control gain and a control deviation calculated by performing a subtraction operation using a command value and a control amount; an adjustment execution command generation unit (102) that generates an adjustment execution command value which indicates ON or OFF; a binary output unit (103) that, in a period in which the adjustment execution command value is ON, generates an adjustment time addition value on the basis of the control deviation and a hysteresis width set value; a standard deviation estimation unit (106) that, in a period in which the adjustment execution command value is OFF, calculates a low-frequency component removed signal from which the low frequency components of the control amount or the control deviation have been removed, and that calculates a standard deviation estimation value which is the estimated value of the standard deviation; and a hysteresis width computation unit (107) that calculates a hysteresis width computation value on the basis of the standard deviation estimation value, and that changes the hysteresis width set value of the binary output unit (103) to the hysteresis width computation value. By appropriately setting the magnitude of the hysteresis, the effects of noise are removed thereby enabling control gain to be accurately calculated.