CA2066743A1 - Field-mounted control unit - Google Patents

Field-mounted control unit

Info

Publication number
CA2066743A1
CA2066743A1 CA2066743A CA2066743A CA2066743A1 CA 2066743 A1 CA2066743 A1 CA 2066743A1 CA 2066743 A CA2066743 A CA 2066743A CA 2066743 A CA2066743 A CA 2066743A CA 2066743 A1 CA2066743 A1 CA 2066743A1
Authority
CA
Canada
Prior art keywords
control unit
command output
representative
section
instructions
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
CA2066743A
Other languages
French (fr)
Other versions
CA2066743C (en
Inventor
Jogesh Warrior
Vincent C. Jacobson
Kelly M. Orth
Craig R. Tielens
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.)
Rosemount Inc
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2066743A1 publication Critical patent/CA2066743A1/en
Application granted granted Critical
Publication of CA2066743C publication Critical patent/CA2066743C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00Programme-control systems
    • G05B19/02Programme-control systems electric
    • G05B19/418Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS], computer integrated manufacturing [CIM]
    • G05B19/4185Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS], computer integrated manufacturing [CIM] characterised by the network communication
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B15/00Systems controlled by a computer
    • G05B15/02Systems controlled by a computer electric
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00Programme-control systems
    • G05B19/02Programme-control systems electric
    • G05B19/418Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS], computer integrated manufacturing [CIM]
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00Program-control systems
    • G05B2219/30Nc systems
    • G05B2219/31From computer integrated manufacturing till monitoring
    • G05B2219/31119Fielddevice comprises also controller and pneumatic actuator and sensor
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00Program-control systems
    • G05B2219/30Nc systems
    • G05B2219/31From computer integrated manufacturing till monitoring
    • G05B2219/31154Actuator sensor bus, asi, intelligent actuator, motor, sensor
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/02Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]

Abstract

A smart field-mounted control unit, for controlling a process, receives signals and sends a command output over a two-wire circuit which powers the control unit. An input section receives the signals, which can be instructions representative of commands or instruction sets, process variables sensed by external control units or setpoints representative of a desired process state. The instructions are representative of a control requirement of the process and adjust a controlling section in the control unit to generate the command output in conformance with the control requirement. The command output can be a function of the difference between the process setpoint and a process variable, or a function of a linear combination of a process variable and its calculated time integral and time derivative functions. A sensing section in the control unit can sense and scale a process variable for generating the command output as well. The control unit can include a regulator section, controlled by the command output, which regulates application of a mechanical, hydraulic, pneumatic or electromagnetic force applied to the process.
CA002066743A 1989-10-02 1990-10-01 Field-mounted control unit Expired - Lifetime CA2066743C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US41618089A 1989-10-02 1989-10-02
US416,180 1989-10-02
PCT/US1990/005584 WO1991005293A1 (en) 1989-10-02 1990-10-01 Field-mounted control unit

Publications (2)

Publication Number Publication Date
CA2066743A1 true CA2066743A1 (en) 1991-04-03
CA2066743C CA2066743C (en) 2000-08-01

Family

ID=23648905

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002066743A Expired - Lifetime CA2066743C (en) 1989-10-02 1990-10-01 Field-mounted control unit

Country Status (7)

Country Link
US (4) US5392162A (en)
EP (1) EP0495001B1 (en)
JP (1) JP3137643B2 (en)
AU (1) AU638507B2 (en)
CA (1) CA2066743C (en)
DE (2) DE69032954T2 (en)
WO (1) WO1991005293A1 (en)

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US5485400A (en) 1996-01-16
WO1991005293A1 (en) 1991-04-18
CA2066743C (en) 2000-08-01
EP0495001A1 (en) 1992-07-22
DE495001T1 (en) 1996-01-18
JPH05501492A (en) 1993-03-18
US5392162A (en) 1995-02-21
JP3137643B2 (en) 2001-02-26
AU6649790A (en) 1991-04-28
AU638507B2 (en) 1993-07-01
EP0495001A4 (en) 1993-06-09
EP0495001B1 (en) 1999-02-17
DE69032954D1 (en) 1999-03-25
US5825664A (en) 1998-10-20
DE69032954T2 (en) 1999-08-26
US5333114A (en) 1994-07-26

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