JPS644802A - Process controller - Google Patents

Process controller

Info

Publication number
JPS644802A
JPS644802A JP16159987A JP16159987A JPS644802A JP S644802 A JPS644802 A JP S644802A JP 16159987 A JP16159987 A JP 16159987A JP 16159987 A JP16159987 A JP 16159987A JP S644802 A JPS644802 A JP S644802A
Authority
JP
Japan
Prior art keywords
observing
settling time
arithmetic parameter
maximum inclination
setting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP16159987A
Other languages
Japanese (ja)
Other versions
JPH0797282B2 (en
Inventor
Yoshikatsu Sakai
Yasuo Nakai
Asao Miyabe
Takashi Kono
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yokogawa Electric Corp
Original Assignee
Yokogawa Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yokogawa Electric Corp filed Critical Yokogawa Electric Corp
Priority to JP62161599A priority Critical patent/JPH0797282B2/en
Publication of JPS644802A publication Critical patent/JPS644802A/en
Publication of JPH0797282B2 publication Critical patent/JPH0797282B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Feedback Control In General (AREA)

Abstract

PURPOSE:To exactly execute setting of a process quantity PV by estimating a settling time of a process from the maximum inclination of a step response, and setting an arithmetic parameter to a PI control means after the settling time has elapsed, from the time point when the stop response has reaches the largest set value. CONSTITUTION:An identification processing means 4 consists of an output part 41 for outputting a step variation DELTAMV to a process 1 through a state changeover switch 3, an observing part 42 for observing a step response of a process quantity PV, and a PI calculating part 43 for calculating a PI arithmetic parameter, based on a result of observation by the observing part 42, and setting its PI arithmetic parameter to a PI control means 2. The observing part 42 observes the step response of the process quantity PV at the time when the step variation has been outputted from the output part 41, derives its maximum inclination, and based on this maximum inclination, a settling time of the process is estimated and a after the settling time has a elapsed, the PI calculating part calculates the PI arithmetic parameter based on the result of observation by the observing part 42. In such a way, settling of the process quantity PV can be executed exactly.
JP62161599A 1987-06-29 1987-06-29 Process control equipment Expired - Lifetime JPH0797282B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62161599A JPH0797282B2 (en) 1987-06-29 1987-06-29 Process control equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62161599A JPH0797282B2 (en) 1987-06-29 1987-06-29 Process control equipment

Publications (2)

Publication Number Publication Date
JPS644802A true JPS644802A (en) 1989-01-10
JPH0797282B2 JPH0797282B2 (en) 1995-10-18

Family

ID=15738213

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62161599A Expired - Lifetime JPH0797282B2 (en) 1987-06-29 1987-06-29 Process control equipment

Country Status (1)

Country Link
JP (1) JPH0797282B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0251123A (en) * 1988-08-12 1990-02-21 Nippon Telegr & Teleph Corp <Ntt> Optical modulator

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5549706A (en) * 1978-10-02 1980-04-10 Omron Tateisi Electronics Co Pi or pid regulator

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4602326A (en) 1983-12-12 1986-07-22 The Foxboro Company Pattern-recognizing self-tuning controller

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5549706A (en) * 1978-10-02 1980-04-10 Omron Tateisi Electronics Co Pi or pid regulator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0251123A (en) * 1988-08-12 1990-02-21 Nippon Telegr & Teleph Corp <Ntt> Optical modulator

Also Published As

Publication number Publication date
JPH0797282B2 (en) 1995-10-18

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