Test Definition
180
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Select
MIL-STD Pulse Limits
check box to enable MIL-STD constraints on the pulse. These limits
enable the following tolerances:
·
Tolerance is +/- 5% of the peak acceleration for one pulse width prior to the pulse.
·
Tolerance is +/- 15% of the peak acceleration during the pulse
·
Tolerance is +20% -30% of the peak acceleration for one pulse width after the pulse
The starting drive limits and running drive limits are also entered here. The starting drive limits apply
while the controller is equalizing the pulse (i.e. while the test is starting). The running drive limits apply
after the output level has reached the demand level (i.e. while the test is running).
The
Max output
parameter defines an absolute voltage limit on the output. If this voltage is exceeded
(in either the positive or negative direction) the test will abort.
The
Max system gain
parameter defines a limit relative to the output. The peak output voltage will not
be allowed to exceed the peak acceleration value of the input signal multiplied by this system gain
value. This is a safety limit that will prevent the controller from outputting a pulse if there is no
accelerometer connected to the system.
Appropriate values for the drive limits depend on your shaker and amplifier system. Typically you
should first run the test to determine when peak output voltage is required. Then set the
Max Output
parameter to about 150% of the required level and set the
Max System Gain
parameter to 2 times the
peak output voltage divided by the peak acceleration.
4.4.5
Channels tab
Shock Define Control Channels tab
Clicking the "Channels" tab on the
dialog box accesses this dialog box.
110
Содержание VibrationVIEW
Страница 15: ...Document Revision Part I ...
Страница 17: ...How To Part II ...
Страница 96: ...Menu commands Part III ...
Страница 142: ...Test Definition Part IV ...
Страница 217: ...Control Centers Part V ...
Страница 226: ...VibrationVIEW Help 213 1995 2005 Vibration Research Corporation All rights reserved See Also RecorderVIEW 309 ...
Страница 227: ...Accelerometer Toolbars Part VI ...
Страница 231: ...Stop Codes Part VII ...
Страница 263: ...Typical Views Part VIII ...
Страница 265: ...Typical Views 252 1995 2005 Vibration Research Corporation All rights reserved 8 4 Random Random CRT View ...
Страница 268: ...VibrationVIEW Help 255 1995 2005 Vibration Research Corporation All rights reserved ...
Страница 269: ...Dialog Boxes Part IX ...
Страница 303: ...Windows Elements Part X ...
Страница 309: ...APPENDIX Part XI ...
Страница 311: ...APPENDIX 298 1995 2005 Vibration Research Corporation All rights reserved ...