Patent ID: 7343776

Claim:
A method for measuring dynamic linearity of an acceleration sensor, comprising: generating an elastic wave pulse in a metal rod by impacting one of end surfaces of the metal rod with each of two round, concentrically located projectiles from a double launch tube independently, and by impacting both projectiles simultaneously or at a prescribed time interval; using an acceleration sensor provided on the other of the end surfaces of the metal rod to measure an acceleration of the other end surface arising when the elastic wave pulse generated by the impact of the projectiles reflects at the other end surface; and using an optical measuring instrument to measure and calculate the acceleration of the other end surface, wherein the dynamic linearity of the acceleration sensor is obtained by comparing in time domain and frequency domain an acceleration output signal of the acceleration sensor, when two projectiles are impacted simultaneously or at a prescribed time interval, with a sum of acceleration signals obtained when two projectiles are launched separately, measured and calculated by the optical measuring instrument.