JPS5627403A - Automatic controller - Google Patents

Automatic controller

Info

Publication number
JPS5627403A
JPS5627403A JP10224479A JP10224479A JPS5627403A JP S5627403 A JPS5627403 A JP S5627403A JP 10224479 A JP10224479 A JP 10224479A JP 10224479 A JP10224479 A JP 10224479A JP S5627403 A JPS5627403 A JP S5627403A
Authority
JP
Japan
Prior art keywords
galvanomirror
subordinate
coil
transmission
subordinate resonance
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.)
Pending
Application number
JP10224479A
Other languages
Japanese (ja)
Inventor
Toru Fujishima
Masanori Ogino
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP10224479A priority Critical patent/JPS5627403A/en
Publication of JPS5627403A publication Critical patent/JPS5627403A/en
Pending legal-status Critical Current

Links

Landscapes

  • Optical Recording Or Reproduction (AREA)
  • Feedback Control In General (AREA)

Abstract

PURPOSE: To improve the performance of an automatic controller by providing a track that impedes the transmission of subordinate resonance of an actuator with a mechanical vibration system.
CONSTITUTION: In response to a signal from input terminal 1, electric current is flowed through coil 41 of galvanomirror 4 to drive mirror 42, which exercises control over the servo system. In parallel to the branch of galvanomirror 4, trap 8 which consists of coil 81 and capacitor 82 and absorbs the subordinate resonance component of the galvanomirror is provided. Thus, the transmission of the galvanomirror subordinate resonance frequency component to galvanomirror 4 is suppressed, so that the loop gain of the system can be increased as much as the suppression. Further, a control signal for special effect from terminal 9 can have an influence of the subordinate resonance prevented. Additionally, this method is similarly applicable to the electrostatic system, etc., as well as the optical system.
COPYRIGHT: (C)1981,JPO&Japio
JP10224479A 1979-08-13 1979-08-13 Automatic controller Pending JPS5627403A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10224479A JPS5627403A (en) 1979-08-13 1979-08-13 Automatic controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10224479A JPS5627403A (en) 1979-08-13 1979-08-13 Automatic controller

Publications (1)

Publication Number Publication Date
JPS5627403A true JPS5627403A (en) 1981-03-17

Family

ID=14322196

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10224479A Pending JPS5627403A (en) 1979-08-13 1979-08-13 Automatic controller

Country Status (1)

Country Link
JP (1) JPS5627403A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6023118U (en) * 1983-07-25 1985-02-16 日産自動車株式会社 Tact operation conveyance device
JPS61190724A (en) * 1985-02-19 1986-08-25 Pioneer Electronic Corp Focus servo device
JPS61190725A (en) * 1985-02-19 1986-08-25 Pioneer Electronic Corp Servo device for recording disk reproducer

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4985476A (en) * 1972-08-25 1974-08-16

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4985476A (en) * 1972-08-25 1974-08-16

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6023118U (en) * 1983-07-25 1985-02-16 日産自動車株式会社 Tact operation conveyance device
JPS61190724A (en) * 1985-02-19 1986-08-25 Pioneer Electronic Corp Focus servo device
JPS61190725A (en) * 1985-02-19 1986-08-25 Pioneer Electronic Corp Servo device for recording disk reproducer

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