초록 ▼

A system to simulate pyrotechnic shock may include a pulse or signal generator to generate a predetermined signal waveform. A signal conditioning device may be included to condition the predetermined signal waveform to produce a predetermined shock simulation for a shock test. The system may also in

A system to simulate pyrotechnic shock may include a pulse or signal generator to generate a predetermined signal waveform. A signal conditioning device may be included to condition the predetermined signal waveform to produce a predetermined shock simulation for a shock test. The system may also include a power amplifier to amplify the conditioned predetermined signal waveform to a chosen amplitude to produce a selected level of shock. A shaker system produces the selected level of shock in response to an amplified signal waveform from the power amplifier. A shock measuring device measures a shock imparted to the test specimen, and an output device presents a result of the shock test on the test specimen.

대표청구항 ▼

1. A method to simulate pyrotechnic shock, comprising: generating a predetermined signal waveform;conditioning the predetermined signal waveform to produce a predetermined shock simulation for a shock test, wherein the conditioning the predetermined signal waveform comprises filtering the signal wav

1. A method to simulate pyrotechnic shock, comprising: generating a predetermined signal waveform;conditioning the predetermined signal waveform to produce a predetermined shock simulation for a shock test, wherein the conditioning the predetermined signal waveform comprises filtering the signal waveform to select levels of output of the signal waveform across a frequency range of the signal waveform, wherein filtering the signal waveform comprises: filtering the signal waveform with an analog filter to select levels of output at different filter intervals;filtering a filtered signal waveform from the analog filter with a digital filter to control the selected level of shock imparted to the test specimen;amplifying the conditioned predetermined signal waveform to a chosen amplitude to produce a selected level of shock;energizing a field coil and driver coil of a shaker system to produce the selected level of shock; andmeasuring a shock imparted to a test specimen by the shaker system; and presenting results of the shock test on the test specimen. 2. The method of claim 1, wherein filtering the signal waveform comprises coarse tuning the signal waveform and fine tuning the signal waveform to produce a predetermined dynamic range for the shock simulation. 3. The method of claim 1, wherein generating the predetermined signal waveform comprises generating a saw tooth wave shaped voltage signal. 4. The method of claim 1, further comprising controlling an amplitude of the conditioned predetermined signal waveform to prevent shocking the test specimen over a predetermined level. 5. The method of claim 1, further comprising monitoring a voltage level of the conditioned predetermined signal waveform to prevent a power in excess of a chosen amount from being transmitted for amplification to prevent shocking the test specimen over a predetermined level. 6. The method of claim 1, further comprising presenting an output spectrum of the shock imparted to the test specimen. 7. The method of claim 1, further comprising: analyzing a output spectrum of the shock imparted to the test specimen; andpresenting results of the analysis of the output spectrum of the shock to determine an ability of the test specimen to withstand forces associated with a pyrotechnic event simulated by the shock imparted to the test specimen. 8. The method of claim 1, further comprising providing the analog filter directly connected to the digital filter. 9. The method of claim 1, wherein the digital filter comprises a ⅓ octave digital filter. 10. The method of claim 1, wherein the digital filter comprises multi-stage software filter sets connected in series, wherein the digital filter is allowed to be set at different filter stages using a computer. 11. A system to simulate pyrotechnic shock to test a specimen, comprising: a pulse or signal generator to generate a predetermined signal waveform;a signal conditioning device to condition the predetermined signal waveform to produce a predetermined shock simulation for a shock test, wherein the signal conditioning device comprises: an analog filter to filter the predetermined waveform from the pulse or signal generator to select levels of output at different filter intervals;a digital filter to receive an output signal from the analog filter to control the selected level of shock;a power amplifier to amplify the conditioned predetermined signal waveform from the digital filter to a chosen amplitude to produce a selected level of shock;a shaker system to produce the selected level of shock in response to an amplified signal waveform from the power amplifier;a shock measuring device to measure a shock imparted to the test specimen; andan output device to present a result of the shock test on the test specimen. 12. The system of claim 11 further comprising: a coarse tuning device to tune the predetermined signal waveform; anda fine tuning device to receive an output from the coarse tuning device to produce a predetermined dynamic range for the shock simulation. 13. The system of claim 11, wherein the pulse or signal generator comprises a voltage generator to produce a saw tooth wave shaped voltage signal. 14. The system of claim 11, further comprising a control unit to prevent the predetermined waveform from exceeding a preset amplitude. 15. The system of claim 14, wherein the control unit to prevent the predetermined waveform from exceeding the preset amplitude comprises a mixer/clipper and master gain control device. 16. The system of claim 11, further comprising a monitoring device to monitor a voltage level of the conditioned predetermined signal waveform being sent to the power amplifier. 17. The system of claim 11, wherein the shock measuring device comprises an accelerometer. 18. The system of claim 11, further comprising a signal conditioner to supply power to the shock measuring device and to amplify a signal from the shock measuring device. 19. The system of claim 11, further comprising a spectrum analyzer to analyze the shock imparted to the test specimen. 20. A method to test a specimen, comprising using the system of claim 11 to test the specimen. 21. A system to simulate a pyrotechnic shock to test a specimen, comprising: a pulse or signal generator to generate a predetermined signal waveform;an analog filter to filter the predetermined signal waveform and to select levels of output at different filter intervals across a frequency range of the signal waveform;a digital filter to receive an output from the analog filter to produce a predetermined dynamic range for the shock simulation in combination with the analog filter;a master gain control device to receive an output from the digital filter;a power amplifier to amplify a filtered predetermined signal waveform from the master gain control device to a chosen amplitude to produce a selected level of shock;a shaker system to produce the selected level of shock in response to an amplified signal waveform from the power amplifier;a shock measuring device to measure a shock imparted to the test specimen; andan output device to present a result of the shock test on the test specimen. 22. The system of claim 21, further comprising a mixer/clipper and master gain control device to prevent the predetermined waveform from exceeding a preset amplitude. 23. The system of claim 21, further comprising an oscilloscope to monitor a voltage level of the filtered predetermined signal waveform being sent to the power amplifier. 24. The system of claim 21, further comprising a spectrum analyzer to analyze the shock imparted to the test specimen. 25. A method to test a specimen, comprising: generating a predetermined signal waveform;conditioning the predetermined signal waveform to produce a predetermined shock simulation for a shock test, wherein the conditioning the predetermined signal waveform comprises filtering the signal waveform to select levels of output of the signal waveform across a frequency range of the signal waveform, wherein filtering the signal waveform comprises: filtering the signal waveform with an analog filter to select levels of output at different filter intervals;filtering a filtered signal waveform from the analog filter with a digital filter to control the selected level of shock imparted to the test specimen;amplifying the conditioned predetermined signal waveform to a chosen amplitude to produce a selected level of shock;energizing a field coil and driver coil of a shaker system to produce the selected level of shock; andmeasuring a shock imparted to a test specimen by the shaker system; and presenting results of the shock test on the test specimen. 26. The method of claim 25, further comprising simulating a pyrotechnic shock for testing the test specimen. 27. The method of claim 25, wherein generating the predetermined signal waveform comprises generating a saw tooth wave shaped voltage signal. 28. A method to test a specimen, comprising: simulating a pyrotechnic shock comprising conditioning a predetermined signal waveform to produce a predetermined shock simulation for a shock test by filtering the signal waveform to select levels of output of the signal waveform across a frequency range of the signal waveform, wherein conditioning the predetermined signal waveform comprises: filtering the signal waveform with an analog filter to select levels of output at different filter intervals;filtering a filtered signal waveform from the analog filter with a digital filter to control the selected level of shock imparted to the test specimen;imparting the simulated pyrotechnic shock to the specimen to perform a shock test;measuring a level of the shock imparted to the specimen; andpresenting results of the shock test. 29. The method of claim 28, wherein simulating the pyrotechnic shock comprises: generating a predetermined signal waveform;amplifying the conditioned predetermined signal waveform to a chosen amplitude to produce a selected level of shock; andenergizing a field coil and driver coil of a shaker system to produce the selected level of shock. 30. The method of claim 29, further comprising coarse tuning the signal waveform and fine tuning the signal waveform to produce a predetermined dynamic range for the shock simulation. 31. The method of claim 29, further comprising controlling an amplitude of the conditioned predetermined signal waveform to prevent shocking the test specimen over a predetermined level.