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WO2005083364A3 - Position detecting system - Google Patents

Position detecting system Download PDF

Info

Publication number
WO2005083364A3
WO2005083364A3 PCT/GB2005/000688 GB2005000688W WO2005083364A3 WO 2005083364 A3 WO2005083364 A3 WO 2005083364A3 GB 2005000688 W GB2005000688 W GB 2005000688W WO 2005083364 A3 WO2005083364 A3 WO 2005083364A3
Authority
WO
WIPO (PCT)
Prior art keywords
position detecting
detecting device
linked
communications network
take account
Prior art date
Application number
PCT/GB2005/000688
Other languages
French (fr)
Other versions
WO2005083364A2 (en
Inventor
Frederick Mark Hudman
Derek John Rimmer
Original Assignee
Newall Measurement Syst Ltd
Frederick Mark Hudman
Derek John Rimmer
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 Newall Measurement Syst Ltd, Frederick Mark Hudman, Derek John Rimmer filed Critical Newall Measurement Syst Ltd
Publication of WO2005083364A2 publication Critical patent/WO2005083364A2/en
Publication of WO2005083364A3 publication Critical patent/WO2005083364A3/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/244—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains
    • G01D5/24471—Error correction
    • G01D5/24476—Signal processing
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/003—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring position, not involving coordinate determination
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D18/00—Testing or calibrating apparatus or arrangements provided for in groups G01D1/00 - G01D15/00
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D18/00—Testing or calibrating apparatus or arrangements provided for in groups G01D1/00 - G01D15/00
    • G01D18/001—Calibrating encoders
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D3/00—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups
    • G01D3/028—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups mitigating undesired influences, e.g. temperature, pressure
    • G01D3/036—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups mitigating undesired influences, e.g. temperature, pressure on measuring arrangements themselves
    • G01D3/0365—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups mitigating undesired influences, e.g. temperature, pressure on measuring arrangements themselves the undesired influence being measured using a separate sensor, which produces an influence related signal
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/244—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains
    • G01D5/249—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains using pulse code
    • G01D5/2492—Pulse stream
    • 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
    • G05B19/404—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 control arrangements for compensation, e.g. for backlash, overshoot, tool offset, tool wear, temperature, machine construction errors, load, inertia
    • 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
    • G05B2219/37—Measurements
    • G05B2219/37008—Calibration of measuring system, probe, sensor

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Manufacturing & Machinery (AREA)
  • Automation & Control Theory (AREA)
  • Signal Processing (AREA)
  • Machine Tool Sensing Apparatuses (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
  • Numerical Control (AREA)

Abstract

A position detecting system (10) is described, for example for use on a machine tool to monitor the position of the tool head relative to a workpiece. The system (10) comprises a number of position detectors (D1, D2, D3…..) each generating information about the position of the tool head along, or relative to, an axis. The position detecting devices are linked by a communications network (12). Each position detecting device receives information from each other position detecting device. Processing means associated with each position detecting device adjusts the positional information generated to take account of any changes detected by the other position detecting devices. Preferably, the system also includes a number of sensors (S1, S2, and S3….) for sensing environmental changes and linked to the communications network (12). In this way, each position detecting device also receives information from the environmental sensors and the positional information can be adjusted to take account of environmental changes.
PCT/GB2005/000688 2004-02-24 2005-02-24 Position detecting system WO2005083364A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0404100.0 2004-02-24
GB0404100A GB2411475B (en) 2004-02-24 2004-02-24 Position detecting system

Publications (2)

Publication Number Publication Date
WO2005083364A2 WO2005083364A2 (en) 2005-09-09
WO2005083364A3 true WO2005083364A3 (en) 2005-10-13

Family

ID=32050787

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2005/000688 WO2005083364A2 (en) 2004-02-24 2005-02-24 Position detecting system

Country Status (2)

Country Link
GB (1) GB2411475B (en)
WO (1) WO2005083364A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103017799B (en) * 2012-10-30 2015-07-29 厦门市芯阳科技有限公司 A kind of induction installation of capacitance type sensor
EP3023742B1 (en) * 2014-11-19 2017-01-11 Dr. Johannes Heidenhain GmbH Assembly comprising a measurement scale attached to a support
PT3250971T (en) 2015-01-29 2022-07-06 Zeras S R L Apparatus and procedure for homing and subsequent positioning of axes of a numerical control machine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4878002A (en) * 1988-10-27 1989-10-31 Advanced Engineering Systems, Operations & Products, Inc. Multi-axis DSP-based parallel processing servo controller for machine tools and robots
WO1997046925A1 (en) * 1996-06-06 1997-12-11 The Boeing Company Method for improving the accuracy of machines
EP0909997A1 (en) * 1997-02-06 1999-04-21 Fanuc Ltd Method for operating controller for controlling industrial machine provided with processor
GB2377497A (en) * 2001-07-11 2003-01-15 Elliott Ind Ltd Inductive position detector

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4228893B4 (en) * 1992-08-29 2004-04-08 Robert Bosch Gmbh System for influencing the driving dynamics of a motor vehicle
GB2356049B (en) * 1999-11-04 2004-04-28 Elliott Ind Ltd Improvements in or relating to position detectors
ITMI20011236A1 (en) * 2001-06-12 2002-12-12 Elesystems S R L POSITION TRANSDUCER

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4878002A (en) * 1988-10-27 1989-10-31 Advanced Engineering Systems, Operations & Products, Inc. Multi-axis DSP-based parallel processing servo controller for machine tools and robots
WO1997046925A1 (en) * 1996-06-06 1997-12-11 The Boeing Company Method for improving the accuracy of machines
EP0909997A1 (en) * 1997-02-06 1999-04-21 Fanuc Ltd Method for operating controller for controlling industrial machine provided with processor
GB2377497A (en) * 2001-07-11 2003-01-15 Elliott Ind Ltd Inductive position detector

Also Published As

Publication number Publication date
WO2005083364A2 (en) 2005-09-09
GB0404100D0 (en) 2004-03-31
GB2411475B (en) 2006-10-25
GB2411475A (en) 2005-08-31

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