Test conditions discussion of particle impact noise detection for space relay

The space relay reliability influences the national defence system reliability seriously, and precaution and detection of relay remainder are the pivotal factor to enhance the relay reliability. Particle Impact Noise Detection (PIND) is the American military criterion, but there is a lack of working mechanism research. From the point of view dynamics the paper establishes the collision mathematic models of relay remainder based on PIND, and studies the remainder motions and collision mechanism, and derives the relations about PIND vibration table's acceleration, frequency, relay cavity's height and recovery coefficient, and lastly gives the corresponding simulations.