[go: up one dir, main page]

GB1279103A - Pid-controllers - Google Patents

Pid-controllers

Info

Publication number
GB1279103A
GB1279103A GB4754969A GB4754969A GB1279103A GB 1279103 A GB1279103 A GB 1279103A GB 4754969 A GB4754969 A GB 4754969A GB 4754969 A GB4754969 A GB 4754969A GB 1279103 A GB1279103 A GB 1279103A
Authority
GB
United Kingdom
Prior art keywords
controller
gain
error
variable
signal
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.)
Expired
Application number
GB4754969A
Inventor
Mohamed Bayoumi
Pavle Kaludercic
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.)
Landis and Gyr AG
Original Assignee
Landis and Gyr AG
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 Landis and Gyr AG filed Critical Landis and Gyr AG
Publication of GB1279103A publication Critical patent/GB1279103A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B11/00—Automatic controllers
    • G05B11/01—Automatic controllers electric
    • G05B11/36—Automatic controllers electric with provision for obtaining particular characteristics, e.g. proportional, integral, differential
    • G05B11/42—Automatic controllers electric with provision for obtaining particular characteristics, e.g. proportional, integral, differential for obtaining a characteristic which is both proportional and time-dependent, e.g. P. I., P. I. D.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Feedback Control In General (AREA)

Abstract

1279103 Automatic control LANDIS & GYR A G 26 Sept 1969 [30 Sept 1968] 47549/69 Heading G3R In an error-actuated closed-loop air-conditioning control system an error signal is applied both directly, and through a differentiator and a variable gain amplifier in cascade, to a PI controller. In Fig. 1, a signal X, corresponding to the value of a variable to be automatically controlled, is compared at 5 with a signal Rcorresponding to a desired value so that any error exceeding a predetermined value is effective through a three-point PD controller 12 and an integrator 4 to control the variable. The error signal 8 is combined at 7 with the error signal applied through a delay unit 6 to produce a differential control term which is added to the input of controller 12. The gain of an amplifier 3 is adjustable to an optimum value by an adjuster which, when the gain is a minimum, varies the gain of a feedback amplifier 15. In a modification, controller 12 is replaced by a two-point controller associated with a differentiator similar to unit 2.
GB4754969A 1968-09-30 1969-09-26 Pid-controllers Expired GB1279103A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1464668A CH482242A (en) 1968-09-30 1968-09-30 PID controller

Publications (1)

Publication Number Publication Date
GB1279103A true GB1279103A (en) 1972-06-28

Family

ID=4402632

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4754969A Expired GB1279103A (en) 1968-09-30 1969-09-26 Pid-controllers

Country Status (7)

Country Link
AT (1) AT299383B (en)
BE (1) BE733765A (en)
CH (1) CH482242A (en)
DE (1) DE1804898C3 (en)
FR (1) FR2019143B1 (en)
GB (1) GB1279103A (en)
NL (1) NL149300B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2444230A1 (en) * 1978-12-11 1980-07-11 Matsushita Electric Industrial Co Ltd COMBUSTION ADJUSTING DEVICE

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH494422A (en) * 1969-10-28 1970-07-31 Landis & Gyr Ag PID controller
DE2828124C2 (en) * 1978-06-27 1981-11-19 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 4200 Oberhausen Procedure to prevent pumping of turbo compressors
DE102010054178A1 (en) * 2010-12-10 2012-06-14 Continental Automotive Gmbh Heating control circuit and method for heating control, in particular zirconia-based sensors

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2444230A1 (en) * 1978-12-11 1980-07-11 Matsushita Electric Industrial Co Ltd COMBUSTION ADJUSTING DEVICE

Also Published As

Publication number Publication date
DE1804898C3 (en) 1973-09-27
DE1804898A1 (en) 1970-06-11
FR2019143A1 (en) 1970-06-26
CH482242A (en) 1969-11-30
NL6908532A (en) 1970-04-01
FR2019143B1 (en) 1974-08-30
NL149300B (en) 1976-04-15
BE733765A (en) 1969-11-03
AT299383B (en) 1972-06-12
DE1804898B2 (en) 1973-03-01

Similar Documents

Publication Publication Date Title
US3834617A (en) Pid controller for heating, ventilating and air conditioning systems
GB1189493A (en) Method and Apparatus for Adaptive Control
GB1436758A (en) Control devices
GB1173067A (en) Improvements in or relating to Process Controllers
GB1215251A (en) Improvements in or relating to process controllers
EP0084376A3 (en) Knock control system
GB1279103A (en) Pid-controllers
ES374761A1 (en) Closed loop control system with automatic variation of its regulating feedback amplification
GB1128937A (en) Electronic schedule generator tracking circuit and rate limiter
GB717977A (en) Improvements relating to regulating systems
GB1170585A (en) Stabilization Control System
GB1408288A (en) Regulation corrector in a closed circuit control system
GB1305079A (en)
GB1288329A (en)
GB1286123A (en) Improvements relating to circuits for three term controllers
GB1148354A (en) Improvements in or relating to control apparatus for use in aircraft
GB1323366A (en) Closed-loop control systems comprising a pid-controller
GB1146023A (en) Method for automatically maintaining an acceleration-controlled body in a desired attitude and apparatus for performance of the method
JPS57211835A (en) Automatic electric power controlling circuit for transmitter
BIEN Optimal control of delay systems[Ph. D. Thesis]
GB1318871A (en) Process control system
GB1301696A (en)
GB1062860A (en) Closed loop control system
JPS55153456A (en) Pulse transmission circuit
SU1187148A1 (en) Non-linear adaptive regulator

Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee