GB837173A - Improvements relating to switching devices for a.c. voltages - Google Patents

Improvements relating to switching devices for a.c. voltages

Info

Publication number
GB837173A
GB837173A GB7410/58A GB741058A GB837173A GB 837173 A GB837173 A GB 837173A GB 7410/58 A GB7410/58 A GB 7410/58A GB 741058 A GB741058 A GB 741058A GB 837173 A GB837173 A GB 837173A
Authority
GB
United Kingdom
Prior art keywords
output
voltage
amplifier
coarse
synchro
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
GB7410/58A
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 GB837173A publication Critical patent/GB837173A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H03K17/74—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of diodes
    • 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
    • G05D3/121—Control of position or direction using feedback using synchromachines (selsyns)
    • 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
    • G05D3/121—Control of position or direction using feedback using synchromachines (selsyns)
    • G05D3/124—Control of position or direction using feedback using synchromachines (selsyns) with modulation
    • 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
    • G05D3/1436—Control of position or direction using feedback using an analogue comparing device with fine or coarse devices

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Control Of Electric Motors In General (AREA)

Abstract

837,173. Electric correspondence control systems. BOFORS A.B. March 7, 1958 [March 8, 1957], No. 7410/58. Class 40 (1). [Also in Group XL (c)] The Figure shows a servo system for controlling a gun 28 in dependence upon the movement of handle 20 having a switching system 33, described in connection with Fig. 1 (not shown) (see Group XL (c)), which determines the change-over point from a coarse to a fine selsyn system. Handle 20 sets the fine and coarse transmitters 21, 22 respectively which are directly connected by device 23 so that there is a fixed ratio between their speeds. The stator windings in the two synchros are connected to the stator windings of synchro receivers 24, 25 similarly connected by a transmission device 26. Synchro 24 has a direct drive 27 with the gun 28. The rotor winding of synchro 25 is connected to input amplifier 29, the output of which is connected to switching device 33 at input 61. The output of the amplifier is also connected to a transistor device, Fig. 3 (not shown) (see Group XL (c)), which gives an output D.C. voltage having a value in dependence upon the amplitude of the alternating current input. A direct voltage source provides a suitable reference D.C. voltage and the output 9 of the switching device is connected to a detector, filter and D.C. amplifier unit 31, the output side of which drives gun 28. Thus, as described in connection with Figs. 1 and 3 (not shown) (see Group XL (c)), the switching device 33 provides a changeover between the coarse and the fine system since the selection of the A.C. inputs supplied at 6, 61 respectively is determined by the relationship between the variable D.C. control voltage derived from the output of amplifier 29 and the reference D.C. voltage.
GB7410/58A 1957-03-08 1958-03-07 Improvements relating to switching devices for a.c. voltages Expired GB837173A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE837173X 1957-03-08
SE360113X 1957-03-08

Publications (1)

Publication Number Publication Date
GB837173A true GB837173A (en) 1960-06-09

Family

ID=26656266

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7410/58A Expired GB837173A (en) 1957-03-08 1958-03-07 Improvements relating to switching devices for a.c. voltages

Country Status (2)

Country Link
BE (1) BE565527A (en)
GB (1) GB837173A (en)

Also Published As

Publication number Publication date
BE565527A (en)

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