双电源转换开关电器的FFR数学测算

Forecast of the FFR of Transfer Switch Equipment

运用试验的方法在产品出厂前对其质量特性进行测定,得出正态分布参数。采集用户对产品使用频次的统计数据,得出泊松分布的参数。对两种参数进行合并分析,得到产品在用户端使用失效的比例预测。

To forecast the return rate of the product. First,to get the test result in lab of amount of products before sending them to the market. Second,to get the statistic model via collecting the information from user.Then,by combining the lab model and using model,the failure rate can be calculated.