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JPS55102020A - Input protection circuit for vibrating stand control unit - Google Patents

Input protection circuit for vibrating stand control unit

Info

Publication number
JPS55102020A
JPS55102020A JP923379A JP923379A JPS55102020A JP S55102020 A JPS55102020 A JP S55102020A JP 923379 A JP923379 A JP 923379A JP 923379 A JP923379 A JP 923379A JP S55102020 A JPS55102020 A JP S55102020A
Authority
JP
Japan
Prior art keywords
circuit
signal
acceleration
input
control unit
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
JP923379A
Other languages
Japanese (ja)
Inventor
Koji Fujiwara
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 JP923379A priority Critical patent/JPS55102020A/en
Publication of JPS55102020A publication Critical patent/JPS55102020A/en
Pending legal-status Critical Current

Links

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  • Apparatuses For Generation Of Mechanical Vibrations (AREA)

Abstract

PURPOSE: To avoid the destruction of sample due to excessive acceleration, by providing the limiter circuit restricting the absolute value of the acceleration signal produced with the input circuit, with the input circuit of the vibration stand control unit constituting electro-hydraulic servo system.
CONSTITUTION: The displacement input signal D is inputted to the differentiation circuit 15, to output the displacement signal d, speed signal v, acceleration signal a. The acceleration input signal A is inputted to the integration circuit 16 to output the signals d, v, a. The acceleration signal from the circuits 15, 16 is restricted for the absolute value with the limiter circuit 19 and fed to the input adder 18 via the switch circuit 17. The circuit 18 adds the signals d, v, a and fed to the servo system. The circuit 19 is provided with the potentiometer, and the absolute value of the acceleration signal such as d, v, a from the circuits 15 and 16 is restricted by setting the potentiometer and no excessive signal is inputted to the vibration stand. Accordingly, the sample on the vibrating stand can be protected.
COPYRIGHT: (C)1980,JPO&Japio
JP923379A 1979-01-31 1979-01-31 Input protection circuit for vibrating stand control unit Pending JPS55102020A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP923379A JPS55102020A (en) 1979-01-31 1979-01-31 Input protection circuit for vibrating stand control unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP923379A JPS55102020A (en) 1979-01-31 1979-01-31 Input protection circuit for vibrating stand control unit

Publications (1)

Publication Number Publication Date
JPS55102020A true JPS55102020A (en) 1980-08-04

Family

ID=11714681

Family Applications (1)

Application Number Title Priority Date Filing Date
JP923379A Pending JPS55102020A (en) 1979-01-31 1979-01-31 Input protection circuit for vibrating stand control unit

Country Status (1)

Country Link
JP (1) JPS55102020A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105549641A (en) * 2015-12-22 2016-05-04 闫天时 Laser screen speckle elimination apparatus

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5327445A (en) * 1976-08-27 1978-03-14 Hitachi Ltd Vibration tes ter

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5327445A (en) * 1976-08-27 1978-03-14 Hitachi Ltd Vibration tes ter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105549641A (en) * 2015-12-22 2016-05-04 闫天时 Laser screen speckle elimination apparatus

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