以保证产品在规定条件下 ,正确执行预期功能 ,达到确定的时间间隔的概率值———可靠性为设计目标的一种设计方法。由于影响可靠性的有关参数如载荷、运动参数、应力和寿命等实际上都是随机变量 ,因此可靠性这一概念是建立在概率统计基础之上的可靠性设计方法(reliability desi To ensure that the product under the conditions specified, the correct implementation of the expected function, to achieve the probability value of the time interval --- Reliability is a design goal of the design. Since the relevant parameters that affect reliability such as load, movement parameters, stress and life are actually random variables, the concept of reliability is based on the reliability and reliability of the statistical design methods (reliability desi