GB1046983A - Improvements in or relating to control systems - Google Patents

Improvements in or relating to control systems

Info

Publication number
GB1046983A
GB1046983A GB11716/65A GB1171665A GB1046983A GB 1046983 A GB1046983 A GB 1046983A GB 11716/65 A GB11716/65 A GB 11716/65A GB 1171665 A GB1171665 A GB 1171665A GB 1046983 A GB1046983 A GB 1046983A
Authority
GB
United Kingdom
Prior art keywords
carrier frequency
speed
rotary element
signal
march
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
GB11716/65A
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.)
Sequential Electronic Systems Inc
Original Assignee
Sequential Electronic Systems Inc
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 Sequential Electronic Systems Inc filed Critical Sequential Electronic Systems Inc
Publication of GB1046983A publication Critical patent/GB1046983A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
    • H02P23/18—Controlling the angular speed together with angular position or phase
    • H02P23/186—Controlling the angular speed together with angular position or phase of one shaft by controlling the prime mover

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Electric Motors In General (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)

Abstract

1, 046, 983. Automatic speed control. SEQUENTIAL ELECTRONIC SYSTEMS, Inc. March 19, 1965 [March 23, 1964], No.11716/65. Heading G3R. To provide retroactive speed control of a rotary element down to zero speed a speed and angular position signal is used to effectively amplitude modulate a carrier frequency, and one of the sidebands only is compared with a reference signal in a phase comparator that produces a signal which, upon amplification, drives the rotary element. The arrangement is such that the element follows the reference (which may be produced by a second rotary element) exactly in r.p.m., with a phase displacement sufficient to produce the required power. In Fig. 1 (not shown) an unspecified optical device 12 produces sine and cosine signals of the angular position of an electric motor shaft 13, to facilitate side band selection in a transistor modulator 16 (which is described, Fig. 2, not shown). In alternative arrangements modulation is effected in the optical device, either by energizing the lamp at carrier frequency, or by rotating a grating at a speed corresponding to carrier frequency.
GB11716/65A 1964-03-23 1965-03-19 Improvements in or relating to control systems Expired GB1046983A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US35368564A 1964-03-23 1964-03-23

Publications (1)

Publication Number Publication Date
GB1046983A true GB1046983A (en) 1966-10-26

Family

ID=23390118

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11716/65A Expired GB1046983A (en) 1964-03-23 1965-03-19 Improvements in or relating to control systems

Country Status (2)

Country Link
DE (1) DE1513445A1 (en)
GB (1) GB1046983A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1800075A1 (en) * 1967-10-04 1969-04-30 Sony Corp Servo system
EP0133580A1 (en) * 1983-08-11 1985-02-27 Kabushiki Kaisha Ono Sokki Permanent magnet synchronous motor control system
EP0170368A1 (en) * 1984-06-05 1986-02-05 Toshiba Kikai Kabushiki Kaisha Speed control apparatus for a synchronous motor

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1800075A1 (en) * 1967-10-04 1969-04-30 Sony Corp Servo system
EP0133580A1 (en) * 1983-08-11 1985-02-27 Kabushiki Kaisha Ono Sokki Permanent magnet synchronous motor control system
EP0170368A1 (en) * 1984-06-05 1986-02-05 Toshiba Kikai Kabushiki Kaisha Speed control apparatus for a synchronous motor
US4734633A (en) * 1984-06-05 1988-03-29 Toei Denki Kabushiki Kaisha Speed control apparatus for a synchronous motor

Also Published As

Publication number Publication date
DE1513445B2 (en) 1974-01-03
DE1513445A1 (en) 1969-10-30

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