CALCULATION METHOD OF OSCILLATION FREQUENCY DEVIATION AND CALCULATION PROGRAM OF OSCILLATION FREQUENCY DEVIATION

摘要

PROBLEM TO BE SOLVED: To provide a calculation method of oscillation frequency deviation of a piezoelectric oscillator capable of reflecting an influence of a resistive component in the piezoelectric oscillator on oscillation frequency deviation highly accurately and so of analyzing the oscillation frequency deviation more accurately.;SOLUTION: A highly accurate oscillation frequency deviation analysis can be attained by using a recurrence equation that reflects on oscillation frequency deviation highly accurately an influence of equivalent series resistance R1 and equivalent load resistance RL of a piezoelectric oscillator to repeatedly calculating the oscillation frequency for obtaining a converged constant value. More specifically, calculations of determining an arbitrary initial substitution value f0 and substituting n order fn for a predetermined recurrence equation are repeated to determine n+1 order oscillation frequency fn+1, and the constant value to which the fn converges is obtained by repeating the calculation to calculate the frequency deviation. This enables highly accurate calculation of the oscillation frequency deviation of the piezoelectric oscillator.;COPYRIGHT: (C)2009,JPO&INPIT