GB935245A - Improvements in or relating to apparatus for positioning a movable member - Google Patents

Improvements in or relating to apparatus for positioning a movable member

Info

Publication number
GB935245A
GB935245A GB35514/59A GB3551459A GB935245A GB 935245 A GB935245 A GB 935245A GB 35514/59 A GB35514/59 A GB 35514/59A GB 3551459 A GB3551459 A GB 3551459A GB 935245 A GB935245 A GB 935245A
Authority
GB
United Kingdom
Prior art keywords
motor
tape
overshoot
significant figures
driven
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
GB35514/59A
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.)
Renault SAS
Regie Nationale des Usines Renault
Original Assignee
Renault SAS
Regie Nationale des Usines Renault
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 Renault SAS, Regie Nationale des Usines Renault filed Critical Renault SAS
Publication of GB935245A publication Critical patent/GB935245A/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
    • G05D3/16—Control of position or direction using feedback using an analogue comparing device whose output amplitude can only take a number of discrete values
    • 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
    • G05B19/27—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 absolute digital measuring device
    • G05B19/29—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 absolute digital measuring device for point-to-point control
    • G05B19/291—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 absolute digital measuring device for point-to-point control the positional error is used to control continuously the servomotor according to its magnitude
    • 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
    • G05D3/1427—Control of position or direction using feedback using an analogue comparing device with non-linear amplifier chain
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
    • H02P7/06—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current
    • H02P7/18—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power
    • 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
    • G05B2219/41081—Approach position from same direction
    • 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
    • G05B2219/43194—Speed steps, switch over as function of position

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Nonlinear Science (AREA)
  • Human Computer Interaction (AREA)
  • Manufacturing & Machinery (AREA)
  • Power Engineering (AREA)
  • Control Of Position Or Direction (AREA)

Abstract

935,245. Programmed electric control systems. REGIE NATIONAL DES USINES RENAULT. 'Oct. 20, 1959 [Oct. 22, 1958; June 16, 1959], No. 35514/59. Class 38 (6). In a system in which a motor positioning a body is controlled by the difference between numerical signals representing desired and actual positions of the body, differences between higher and lower significant figures of the signals cause coarse and fine corrections at high and low speeds respectively, the final direction of operation of the motor being always the same to avoid the effect of backlash. Fig. 6 shows a system in which a table 7 of a machine tool is adjusted to successive positions along one coordinate axis by a lead screw X driven by a motor 8 in accordance with a programme on a perforated tape 12. Digital signals from photocells 13 associated with the tape are first compared in an electronic computer 14 with digital signals from photo-cells 11 associated with a perforated disc 10 driven through 100/1 reduction gearing by motor 8 so that any difference is effective to cause operation of motor 8 until a position bearing a predetermined relative relationship to a position corresponding to the first two significant figures of the tape signal is reached. A perforated disc 9 directly driven by motor 8 is then substituted for disc 10 and a second adjustment, taking into account the last two significant figures of the tape signal, is obtained by operating motor 8 at a lower speed to miminize overshoot. Finally, overshoot is removed by reversing the motor and running it at a still lower speed to remove the overshoot. To avoid different effects of backlash the first adjustment is always made to the same side of the final position. A similar system may control positioning of the table about another co-ordinate axis. Modifications involving a greater or lesser number of adjustments are described.
GB35514/59A 1958-10-22 1959-10-20 Improvements in or relating to apparatus for positioning a movable member Expired GB935245A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR777256A FR1222480A (en) 1958-10-22 1958-10-22 Operational mode of automatic positioning of a mechanical component
FR797643A FR75912E (en) 1958-10-22 1959-06-16 Operational mode of automatic positioning of a mechanical component

Publications (1)

Publication Number Publication Date
GB935245A true GB935245A (en) 1963-08-28

Family

ID=26183608

Family Applications (1)

Application Number Title Priority Date Filing Date
GB35514/59A Expired GB935245A (en) 1958-10-22 1959-10-20 Improvements in or relating to apparatus for positioning a movable member

Country Status (5)

Country Link
JP (1) JPS377265B1 (en)
DE (1) DE1085230B (en)
FR (2) FR1222480A (en)
GB (1) GB935245A (en)
OA (1) OA01480A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2129135A (en) * 1979-07-27 1984-05-10 Ethyl Corp Automatic controller
US7350310B2 (en) 2005-01-27 2008-04-01 Renishaw Plc Articulating device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2129135A (en) * 1979-07-27 1984-05-10 Ethyl Corp Automatic controller
US7350310B2 (en) 2005-01-27 2008-04-01 Renishaw Plc Articulating device
USRE43250E1 (en) 2005-01-27 2012-03-20 Renishaw Plc Articulating device

Also Published As

Publication number Publication date
DE1085230B (en) 1960-07-14
FR1222480A (en) 1960-06-10
FR75912E (en) 1961-08-25
JPS377265B1 (en) 1962-07-05
OA01480A (en) 1969-07-21

Similar Documents

Publication Publication Date Title
GB1501772A (en) Interruptable numerical contouring control system with return to path safeguards
EP0294486B1 (en) Tapping controller
JPS5633249A (en) Synchronous operation control system for electric motor
KR880006000A (en) Numerical Control Transfer Device
GB1450477A (en) Automatic lubrication method
GB1322108A (en) Numerical control system for a lathe
GB1074870A (en) Improvements in automatic control system
GB1200119A (en) Method of tool retraction in programmed machining processes
US3671840A (en) Method and apparatus for adaptive control of a turning machine
GB935245A (en) Improvements in or relating to apparatus for positioning a movable member
EP0146633A4 (en) Numerical control system.
JPS57168846A (en) Copying control method
GB1453941A (en) Numerical control apparatus
SU1209023A3 (en) Device for controlling speed of component rotation
GB1410636A (en) Electroerosion cutting machine
US3676760A (en) Feedrate control system
GB1325497A (en) Automatically operating on a workpiece with a cutting or forming tool
US5010492A (en) Spindle control system and numerical control apparatus
GB1412208A (en) Machine tool eg spark erosion machine having means for controlling the positioning of the workpiece carrier thereof
GB1246743A (en) Electronic control system
SU772818A1 (en) Copying control system
JPS57127206A (en) System for correcting positioning error in numerical controlling device
GB1072083A (en) Numerically controlled contouring system
SU1136112A1 (en) Device for stabilizing cutting speed in cnc lathes
SE310520B (en)