JPS5523450A - Method and device for instrumentation of vibration characteristic of mechanical structure body - Google Patents

Method and device for instrumentation of vibration characteristic of mechanical structure body

Info

Publication number
JPS5523450A
JPS5523450A JP9618978A JP9618978A JPS5523450A JP S5523450 A JPS5523450 A JP S5523450A JP 9618978 A JP9618978 A JP 9618978A JP 9618978 A JP9618978 A JP 9618978A JP S5523450 A JPS5523450 A JP S5523450A
Authority
JP
Japan
Prior art keywords
force
percussion
acceleration
detector
structure body
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.)
Granted
Application number
JP9618978A
Other languages
Japanese (ja)
Other versions
JPS5719368B2 (en
Inventor
Masayuki Sato
Masayuki Shigeta
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 JP9618978A priority Critical patent/JPS5523450A/en
Publication of JPS5523450A publication Critical patent/JPS5523450A/en
Publication of JPS5719368B2 publication Critical patent/JPS5719368B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)

Abstract

PURPOSE: To improve measurement precision of vibration characteristics of a mechanical-structure body by obtaining a real percussion force signal by deducting signal force that additional mall fitted previous to the force detector of a percussion unit affects a percussion force signal.
CONSTITUTION: Percussion unit 5 percusses structure body 2 and three outputs, force F1 from force detector 3, acceleration (α) from acceleration detector 12 and vibration acceleration (β) from vibration response detector 1 at this time, are simultaneously inputted to percussion force calculation unit 13, where additional mass M fitted previous to force detector 3 is multiplied by acceleration (α) and force F1 is substracted by the result to obtain real percussion force F. In addition, vibration characteristics such as a frequency response, coherence function and transfer function can be obtained by processor 15 from percussion force F and vibration acceleration (β). In this way, the measurement precision of vibration characteristics of structure body 2 can be improved by an accurate percussion force signal.
COPYRIGHT: (C)1980,JPO&Japio
JP9618978A 1978-08-09 1978-08-09 Method and device for instrumentation of vibration characteristic of mechanical structure body Granted JPS5523450A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9618978A JPS5523450A (en) 1978-08-09 1978-08-09 Method and device for instrumentation of vibration characteristic of mechanical structure body

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9618978A JPS5523450A (en) 1978-08-09 1978-08-09 Method and device for instrumentation of vibration characteristic of mechanical structure body

Publications (2)

Publication Number Publication Date
JPS5523450A true JPS5523450A (en) 1980-02-19
JPS5719368B2 JPS5719368B2 (en) 1982-04-22

Family

ID=14158352

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9618978A Granted JPS5523450A (en) 1978-08-09 1978-08-09 Method and device for instrumentation of vibration characteristic of mechanical structure body

Country Status (1)

Country Link
JP (1) JPS5523450A (en)

Also Published As

Publication number Publication date
JPS5719368B2 (en) 1982-04-22

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