Pneumatic type multiple waveform active shock waveform generator

Abstract

The pneumatic active multi-waveform shock wave generator includes elastic washer system, the primary piston rod, O-rings, small normal pressure air chamber, piston, high pressure air chamber, the secondary piston rod, low pressure air chamber, split sealing ring, piezoelectric ceramic executor, cylinder lid, shock platform, large cylinder and small cylinder. The present invention can excite relatively large product with semi-sinusoidal wave, later-peak sawtoothed wave and other overload waveforms, and has excellent waveform controllability and repeatability. The present invention is used in heavy load and great shock test, and has wide application range, simple structure and high reliability.

Description

Technical field [0001] The invention is a kind of heavy-load and large-shock test requirements, and particularly relates to a pneumatic multi-waveform active shock waveform generator capable of generating half sine waves and rear-peak sawtooth waves. Background technique [0002] During the launching process of the missile, the sudden change of energy may damage the operational performance of the missile system, and often destroy the overall structural strength of the missile and the reliability of electronic equipment, reducing the hit rate. Therefore, in order to meet the increasingly higher precision requirements and safety requirements, before the missile leaves the factory, it is necessary to conduct a one-time overload test on the missile to ensure that the missile can work normally. However, when performing overload tests on heavy products, it is difficult to simultaneously obtain a large overload value and a long impact pulse width, and it is also difficult to contro...

AI Technical Summary

Problems solved by technology

However, with the development of shock environment simulation technology today, in addition to several standard shock pulses that can be accurately defined by functions and can be reproduced more accurately and repeatedly in the laboratory, it is necessary to reproduce the real shock environment in engineering and achieve a certain accuracy. there are still some difficulties

Especially for some large-mass test pieces (such as missiles), large acceleration peaks, and shock tests with strict shock waveform requirements, it is difficult to meet the requirements of the standard in terms of waveform and accuracy.

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