CA2472018A1 - Pulse output function for programmable logic controller - Google Patents

Pulse output function for programmable logic controller Download PDF

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Publication number
CA2472018A1
CA2472018A1 CA002472018A CA2472018A CA2472018A1 CA 2472018 A1 CA2472018 A1 CA 2472018A1 CA 002472018 A CA002472018 A CA 002472018A CA 2472018 A CA2472018 A CA 2472018A CA 2472018 A1 CA2472018 A1 CA 2472018A1
Authority
CA
Canada
Prior art keywords
values
programmable logic
logic controller
pulse output
output function
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
CA002472018A
Other languages
French (fr)
Other versions
CA2472018C (en
Inventor
Alan D. Mcnutt
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.)
Siemens Industry Inc
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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 CA2472018A1 publication Critical patent/CA2472018A1/en
Application granted granted Critical
Publication of CA2472018C publication Critical patent/CA2472018C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
    • G05B19/19—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by positioning or contouring control systems, e.g. to control position from one programmed point to another or to control movement along a programmed continuous path
    • G05B19/40—Open loop systems, e.g. using stepping motor
    • 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
    • G05B11/26—Automatic controllers electric in which the output signal is a pulse-train
    • G05B11/28—Automatic controllers electric in which the output signal is a pulse-train using pulse-height modulation; using pulse-width modulation
    • 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
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/41—Servomotor, servo controller till figures
    • G05B2219/41206—Lookup table, memory with certain relationships
    • 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
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/42—Servomotor, servo controller kind till VSS
    • G05B2219/42237—Pwm pulse width modulation, pulse to position modulation ppm

Abstract

A method for providing controlled movement is provided. A method comprises obtaining a first frequency and a second frequency. The method also comprises creating a table of values comprising a plurality of target frequencies intermediate to the first and second frequencies, the table of values also comprising a pulse width, a pulse count, and a differential pulse width corresponding to each of the target frequencies from the plurality of target frequencies. The method further comprises outputting at least a portion of the values to a motion device. Thus, the present invention provides an improved method, enabling maximum motion parameters to be set and reducing the size and cost of control devices required for effective motion control.
CA002472018A 2002-01-07 2002-12-17 Pulse output function for programmable logic controller Expired - Lifetime CA2472018C (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US34648802P 2002-01-07 2002-01-07
US60/346,488 2002-01-07
US10/309,539 2002-12-04
US10/309,539 US7158900B2 (en) 2002-01-07 2002-12-04 Pulse output function for programmable logic controller
PCT/US2002/040341 WO2003060615A2 (en) 2002-01-07 2002-12-17 Pulse output function for programmable logic controller

Publications (2)

Publication Number Publication Date
CA2472018A1 true CA2472018A1 (en) 2003-07-24
CA2472018C CA2472018C (en) 2008-02-05

Family

ID=26976879

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002472018A Expired - Lifetime CA2472018C (en) 2002-01-07 2002-12-17 Pulse output function for programmable logic controller

Country Status (6)

Country Link
US (5) US6865425B2 (en)
EP (2) EP2315091A3 (en)
CN (1) CN100474190C (en)
CA (1) CA2472018C (en)
TW (1) TWI282045B (en)
WO (1) WO2003060615A2 (en)

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Also Published As

Publication number Publication date
EP2315091A3 (en) 2012-04-04
EP2315091A2 (en) 2011-04-27
US7668674B2 (en) 2010-02-23
US7747398B2 (en) 2010-06-29
US7158900B2 (en) 2007-01-02
CN100474190C (en) 2009-04-01
TW200405147A (en) 2004-04-01
EP1461669A2 (en) 2004-09-29
US20030220702A1 (en) 2003-11-27
US20050267701A1 (en) 2005-12-01
WO2003060615A2 (en) 2003-07-24
CN1613035A (en) 2005-05-04
US7596462B2 (en) 2009-09-29
US20050278130A1 (en) 2005-12-15
EP1461669B1 (en) 2013-05-08
US20030191593A1 (en) 2003-10-09
TWI282045B (en) 2007-06-01
US6865425B2 (en) 2005-03-08
CA2472018C (en) 2008-02-05
US20050273287A1 (en) 2005-12-08
WO2003060615A3 (en) 2004-01-15

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