JPS554516A - Start control unit in vibration testing machine - Google Patents
Start control unit in vibration testing machineInfo
- Publication number
- JPS554516A JPS554516A JP7652178A JP7652178A JPS554516A JP S554516 A JPS554516 A JP S554516A JP 7652178 A JP7652178 A JP 7652178A JP 7652178 A JP7652178 A JP 7652178A JP S554516 A JPS554516 A JP S554516A
- Authority
- JP
- Japan
- Prior art keywords
- adder
- output
- tested
- exciting
- signal generator
- 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 prevent shock upon the object to be tested by so biasing a command signal generator output that the output of an adder to which the displacement signal of an exciting machine is fed back becomes zero.
CONSTITUTION: A bias circuit 17 is connected between an adder 4 which is connected to acceleration detectors 12, 14, integrating circuits 13, 14 and displacement detector 6 and to which the displacement signal of an exciting machine 5 is fed back and a command signal generator 3 as well as between the adder 4 and a servo amplifier 7. In order to excite an exciting table 1 which has lowered down to the lowermost position owing to the weight of the object 2 to be tested and its own weight, a hydraulic cylinder 10 is connected to a hydraulic source 8 and before pressing with this, the command signal generator 3 output is so biased by the bias circuit 17 that the output of the adder 4 becomes zero. Then, when the hydraulic cylinder 10 is pressurized, no acceleration is generated in the exciting table 1 and no unnecessary shock is given to the object 2 to be tested.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7652178A JPS554516A (en) | 1978-06-26 | 1978-06-26 | Start control unit in vibration testing machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7652178A JPS554516A (en) | 1978-06-26 | 1978-06-26 | Start control unit in vibration testing machine |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS554516A true JPS554516A (en) | 1980-01-14 |
Family
ID=13607577
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7652178A Pending JPS554516A (en) | 1978-06-26 | 1978-06-26 | Start control unit in vibration testing machine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS554516A (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4934878A (en) * | 1972-07-31 | 1974-03-30 | ||
JPS5129419A (en) * | 1974-04-03 | 1976-03-12 | Montedison Spa |
-
1978
- 1978-06-26 JP JP7652178A patent/JPS554516A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4934878A (en) * | 1972-07-31 | 1974-03-30 | ||
JPS5129419A (en) * | 1974-04-03 | 1976-03-12 | Montedison Spa |
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