GB872422A - Stabilizing device for closed loop servo control systems - Google Patents

Stabilizing device for closed loop servo control systems

Info

Publication number
GB872422A
GB872422A GB25703/58A GB2570358A GB872422A GB 872422 A GB872422 A GB 872422A GB 25703/58 A GB25703/58 A GB 25703/58A GB 2570358 A GB2570358 A GB 2570358A GB 872422 A GB872422 A GB 872422A
Authority
GB
United Kingdom
Prior art keywords
signal
servo system
instability
output
closed loop
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
GB25703/58A
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.)
Saab Bofors AB
Original Assignee
Bofors AB
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 Bofors AB filed Critical Bofors AB
Publication of GB872422A publication Critical patent/GB872422A/en
Expired legal-status Critical Current

Links

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
    • G05B5/00—Anti-hunting arrangements
    • G05B5/01—Anti-hunting arrangements electric
    • 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
    • G05D3/1445—Control of position or direction using feedback using an analogue comparing device with a plurality of loops

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Feedback Control In General (AREA)
  • Control Of Electric Motors In General (AREA)

Abstract

872,422. Servo systems. BOFORS A.B. Aug. 11, 1958 [Sept. 18, 1957], No. 25703/58. Class 40 (1). In a closed loop servo system wherein an output and input signal are compared in a differential unit 1 (Fig. 1) any difference being amplified at 2 to drive a motor 3 and load 4, instability in the system is reduced with the aid of a unit 6 having the same characteristics as the servomotor and load, except for the inherent resonances, and a discriminating device 7 for eliminating the instability components from the feed-back signal. In one arrangement, Fig. 2, the device 7 comprises high and low pass filters 11, 12, the former receiving the signal from the analogue device and the latter the signal from the servo system, the outputs of the filters being combined and fed back to the comparator at the input of amplifier 10. In a modification, Fig. 3, the signal from the analogue unit and that from the servo system both pass high-pass filters with identical bands and one output is subtracted from the other in a device 15, the output of which thus represents instability components only. The complete signal from the servo system is passed to a device 16 in which the instability components selected at 15 are subtracted from it.
GB25703/58A 1957-09-18 1958-08-11 Stabilizing device for closed loop servo control systems Expired GB872422A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE872422X 1957-09-18
SE846257 1957-09-18

Publications (1)

Publication Number Publication Date
GB872422A true GB872422A (en) 1961-07-12

Family

ID=26654837

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25703/58A Expired GB872422A (en) 1957-09-18 1958-08-11 Stabilizing device for closed loop servo control systems

Country Status (2)

Country Link
DE (1) DE1698560B1 (en)
GB (1) GB872422A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3184662A (en) * 1962-07-09 1965-05-18 Sperry Rand Corp Closed loop servo system with dual channel degenerating feedback

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2353605C1 (en) * 1972-04-13 1983-06-09 Pietzsch, Ludwig, Dr.-Ing., 7500 Karlsruhe Device for positioning and stabilizing the position of an inert mass movably supported on a base

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3184662A (en) * 1962-07-09 1965-05-18 Sperry Rand Corp Closed loop servo system with dual channel degenerating feedback

Also Published As

Publication number Publication date
DE1698560B1 (en) 1970-05-14

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