JPS5576933A - Vibration tester - Google Patents
Vibration testerInfo
- Publication number
- JPS5576933A JPS5576933A JP15008478A JP15008478A JPS5576933A JP S5576933 A JPS5576933 A JP S5576933A JP 15008478 A JP15008478 A JP 15008478A JP 15008478 A JP15008478 A JP 15008478A JP S5576933 A JPS5576933 A JP S5576933A
- Authority
- JP
- Japan
- Prior art keywords
- servo
- spool
- control system
- currents
- frequency
- 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
Links
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
PURPOSE: To eliminate adverse effects to a servo-control system due to the resonance of a spool, by controlling servo-valve field currents as well as servo-valve spool drive currents.
CONSTITUTION: Spool displacement signals are amplified by means of a spool displacement amplifier 24 because currents flowing through a spool drive coil 22 are proportional to the displacement of a spool 20, the signals are substracted from field current set value, voltage signals given to a field power source 26 are decreased, and currents afforded to a field coil 23 are lessened. Here, the spool displacement amplifier 24 is furnished with a discriminating function for detecting only frequency not less than upper limit frequency in a frequency region necessary for a servo- control system. Thus, the response sensitivity of a servo-valve in a frequency region except a frequency range required for the servo-control system can be lowered without damaging the phase characteristics of the control system.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15008478A JPS5576933A (en) | 1978-12-06 | 1978-12-06 | Vibration tester |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15008478A JPS5576933A (en) | 1978-12-06 | 1978-12-06 | Vibration tester |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5576933A true JPS5576933A (en) | 1980-06-10 |
Family
ID=15489155
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15008478A Pending JPS5576933A (en) | 1978-12-06 | 1978-12-06 | Vibration tester |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5576933A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2020187755A1 (en) * | 2019-03-18 | 2020-09-24 | Université de Mons | Resonant frequency vibrational test |
-
1978
- 1978-12-06 JP JP15008478A patent/JPS5576933A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2020187755A1 (en) * | 2019-03-18 | 2020-09-24 | Université de Mons | Resonant frequency vibrational test |
CN113785180A (en) * | 2019-03-18 | 2021-12-10 | 蒙斯大学 | Resonance frequency vibration test |
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