GB888619A - Multiple linear range error decoder - Google Patents

Multiple linear range error decoder

Info

Publication number
GB888619A
GB888619A GB35866/59A GB3586659A GB888619A GB 888619 A GB888619 A GB 888619A GB 35866/59 A GB35866/59 A GB 35866/59A GB 3586659 A GB3586659 A GB 3586659A GB 888619 A GB888619 A GB 888619A
Authority
GB
United Kingdom
Prior art keywords
amplifier
programme
stages
counter
potential
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
GB35866/59A
Inventor
John L Bower
Wilton R Abbott
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.)
North American Aviation Corp
Original Assignee
North American Aviation 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
Priority to US643134A priority Critical patent/US2906934A/en
Application filed by North American Aviation Corp filed Critical North American Aviation Corp
Priority to GB35866/59A priority patent/GB888619A/en
Publication of GB888619A publication Critical patent/GB888619A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D3/00—Control of position or direction
    • G05D3/12—Control of position or direction using feedback
    • G05D3/14—Control of position or direction using feedback using an analogue comparing device
    • 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
    • G05B19/21—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 using an incremental digital measuring device
    • G05B19/23—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 using an incremental digital measuring device for point-to-point control
    • G05B19/231—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 using an incremental digital measuring device for point-to-point control the positional error is used to control continuously the servomotor according to its magnitude
    • G05B19/232—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 using an incremental digital measuring device for point-to-point control the positional error is used to control continuously the servomotor according to its magnitude with speed feedback only
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • 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
    • G05B2219/33—Director till display
    • G05B2219/33268—D-A, A-D
    • 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
    • G05B2219/43—Speed, acceleration, deceleration control ADC
    • G05B2219/43179—Speed changes gradualy from constant value to zero
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/10—Calibration or testing
    • H03M1/1071—Measuring or testing

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Manufacturing & Machinery (AREA)
  • Control Of Electric Motors In General (AREA)
  • Feedback Control In General (AREA)

Abstract

888,619. Electric selective signalling systems. NORTH AMERICAN AVIATION Inc. Oct. 22, 1959, No. 35866/59. Class 40 (1). A decoder for converting digital error signals in a servo system into analogue form, includes at least two electrical networks having impedances in two different ranges of magnitude and a device for controlling the connection of one network to the other to increase the capacity of the apparatus when a large error occurs or is anticipated. As described, a motor 10, having a fixed potential applied to its armature winding 11, is controlled from a D.C. amplifier 15 connected to one end of its field winding. The shaft 10<SP>1</SP> of the motor drives a motionto-pulse converter (or tachometer) 16 which supplies subtracting or adding pulses via synchronizers 18 and 17, respectively, to a binary electronic counter 21. A further input of adding pulses, via a synchronizer 19, is fed to the counter from a pulse generator 20 in accordance with a programme (e.g. for movement in a machine tool). Resistors 28 ... 31, weighted in correspondence with the values of the counting stages 22...25 which bring them into operation, vary the potential at 34 which controls the amplifier 15. When sudden changes occur or are anticipated, a transistor amplifier 40 is brought into operation by the programme device 42 and energizes a solenoid 30 closing a switch 37. This brings additional stages 26, 27 into the counter circuit with correspondingly weighted resistors 32, 33 whose tolerances need not be so critical as they would have to be if these stages were permanently in the circuit. A balancing resistor 38 avoids unwanted changes in potential at 34 when the switch 37 closes. In a second embodiment (Fig. 4, not shown), this compensation is achieved by switching in another bias 14 for the field winding. A known type of programme device (Fig. 2, not shown), is described. U.S.A. Specifications 2,537,427 and 2,552,968 are referred to.
GB35866/59A 1957-02-28 1959-10-22 Multiple linear range error decoder Expired GB888619A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US643134A US2906934A (en) 1957-02-28 1957-02-28 Multiple linear range error decoder
GB35866/59A GB888619A (en) 1959-10-22 1959-10-22 Multiple linear range error decoder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB35866/59A GB888619A (en) 1959-10-22 1959-10-22 Multiple linear range error decoder

Publications (1)

Publication Number Publication Date
GB888619A true GB888619A (en) 1962-01-31

Family

ID=10382417

Family Applications (1)

Application Number Title Priority Date Filing Date
GB35866/59A Expired GB888619A (en) 1957-02-28 1959-10-22 Multiple linear range error decoder

Country Status (1)

Country Link
GB (1) GB888619A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2034910A1 (en) * 1969-03-18 1970-12-18 Unimation Inc

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2034910A1 (en) * 1969-03-18 1970-12-18 Unimation Inc

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