JPS6486383A - Positioning controller - Google Patents

Positioning controller

Info

Publication number
JPS6486383A
JPS6486383A JP24334587A JP24334587A JPS6486383A JP S6486383 A JPS6486383 A JP S6486383A JP 24334587 A JP24334587 A JP 24334587A JP 24334587 A JP24334587 A JP 24334587A JP S6486383 A JPS6486383 A JP S6486383A
Authority
JP
Japan
Prior art keywords
control system
external disturbance
error signal
linear
linear control
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
JP24334587A
Other languages
Japanese (ja)
Inventor
Hisanao Nishijima
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP24334587A priority Critical patent/JPS6486383A/en
Publication of JPS6486383A publication Critical patent/JPS6486383A/en
Pending legal-status Critical Current

Links

Landscapes

  • Moving Of Head For Track Selection And Changing (AREA)
  • Moving Of The Head To Find And Align With The Track (AREA)
  • Control Of Position Or Direction (AREA)

Abstract

PURPOSE:To suppress external disturbance without losing the stability of the entire system by providing a nonlinear control system in addition to a linear control system and operating the nonlinear control system when an external disturbance exceeds the permissible value of the linear control system. CONSTITUTION:When a change in a reference signal is large or shock and vibration is applied to a load 15 as an external disturbance, an error signal is increased depending on the frequency, the amplitude and the input waveform. The error signal is suppressed by the stiffness of the linear control system, but since the system is linear, the error signal exceeds the allowable limit depending on the magnitude of the external disturbance. Then the error signal is compared and monitored by a comparison amplifier section 12 and when it is predicted that the error signal exceeds the allowable value, a command is given to a power amplifier section 13, from which a control current B is generated, a thrust B is generated from a thrust generating section 14 and fed to a coil 24. Since the current cancels the external disturbance, even if the external disturbance has the magnitude and frequency in excess of the limit of the stiffness of the linear control system, the error is limited to the allowable value or below.
JP24334587A 1987-09-28 1987-09-28 Positioning controller Pending JPS6486383A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP24334587A JPS6486383A (en) 1987-09-28 1987-09-28 Positioning controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP24334587A JPS6486383A (en) 1987-09-28 1987-09-28 Positioning controller

Publications (1)

Publication Number Publication Date
JPS6486383A true JPS6486383A (en) 1989-03-31

Family

ID=17102445

Family Applications (1)

Application Number Title Priority Date Filing Date
JP24334587A Pending JPS6486383A (en) 1987-09-28 1987-09-28 Positioning controller

Country Status (1)

Country Link
JP (1) JPS6486383A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100804568B1 (en) * 2006-03-31 2008-02-20 도시바 테크 가부시키가이샤 Electric cleaner

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100804568B1 (en) * 2006-03-31 2008-02-20 도시바 테크 가부시키가이샤 Electric cleaner

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