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本文分析了压电陀螺的可靠性,报导了压电陀螺的失效机理、失效模式和失效分布的研究结果,以及恒应力寿命试验和加速寿命试验确定的威布尔分布参数;η=8,945小时,t_E=13,912小时,m=0.58;加速度系数τ=3.8。 提高压电陀螺的可靠性研究表明,元器件筛选和改进工艺能降低压电陀螺的失效率;压电陀螺进行早期失效筛选能提高可靠度。 单轴和三轴压电陀螺的MTBF下限分别为9,651小时和3,217小时。洲际导弹用单轴和三轴压电陀螺的可靠度分别为99.82％和99.46％
In this paper, the reliability of piezoelectric gyroscope is analyzed, and the failure mechanism, failure modes and failure distribution of piezoelectric gyroscope are reported. The weibull distribution parameters determined by constant stress life test and accelerated life test are also reported. Η = 8,945 hours, t_E = 13,912 hours, m = 0.58; Acceleration coefficient τ = 3.8. Research on improving the reliability of piezoelectric gyroscopes shows that component screening and improvement can reduce the failure rate of piezoelectric gyroscopes. Early failure screening of piezoelectric gyroscope can improve the reliability. The MTBF limits for the uniaxial and triaxial piezoelectric gyroscopes were 9,651 hours and 3,217 hours, respectively. The reliability of intercontinental missile with uniaxial and triaxial piezoelectric gyroscopes is 99.82% and 99.46%